9.MAINTENANCE AND CALIBRATION EQUIPMENTS October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:34 am

9.00.00 MAINTENANCE AND CALIBRATION EQUIPMENTS(COMMON

FOR TWO UNITS)

9.01.01 Maintenance and calibration equipments of proven type,

as specified under this sub-section, shall be provided

as a minimum by the bidder. However any other equipment

deemed necessary by the bidder for maintenance and

calibration of C&I devices/ systems shall be included in

bidder’s quoted price. The bidder shall be responsible

for supplying any necessary additions of tools as

required for proper maintenance and calibration of the

installed C & I devices/ systems.

9.01.02 Electrical power supply requirement of the instruments

offered under this section shall be 240 V AC, 50 Hz

nominal, single phase, unless specified otherwise.

9.01.03 Microprocessor based instruments shall be offered

wherever specified. The make, model range and other

technical features of the maintenance and calibration

equipments shall be as finalised during detailed

engineering. The bidder shall be responsible for

erection and commissioning of maintenance and

calibration equipments and for setting up of the

electronic & pneumatic M&C laboratory including

provision of necessary furniture necessary for mounting

of all equipment & working space, tables chairs,

trolleys etc.as finalised during detailed engineering.

The laboratory shall be modular in design, enabling easy

change of arrangement wherever applicable.

9.01.04 All the microprocessor based maintenance and

calibration units should also have the provision for

data logging facility for keeping calibration/

maintenance records with proper communication facility

for download these data on the lab PC as specified

under clause. Suitable software shall be in the scope of

bidder.

9.01.05 All required accessories, certificate of calibration,

operating manual etc. for the maintenance and

calibration equipments shall be included whether

specifically indicated herein or not. All calibration

certificate shall be traceable to National/ International

Standard only.

9.01.06 All portable instrument shall be with rechargeable

battery, battery charger and carrying case.

9.01.07 The following maintenance and calibration equipments

as specified in this section shall be furnished for

the station.

9.02.00 A. TEST BENCH

9.02.01 Electronic Test Bench Quantity : One Number

Self contained test bench made of anodized aluminium for

testing and repair of electronic instruments and gadgets

shall be furnished. It shall be modular in design,

enabling easy change of arrangement. The test bench

shall be complete with power packs (AC & DC)

receptacles,(AC/DC) meters digital multi meter etc. The

various voltage levels shall be finalised during

detailed engineering.

9.02.02 Pneumatic Test Bench: Quantity : One Number

Pneumatic test bench made of anodized aluminium, modular

in design, enabling easy change of arrangement/ layout

as and when required, shall be provided for testing/

calibration of pneumatic instruments/devices. The test

bench shall be complete with valves, pressure gauges,

filter regulators, overload protection feature etc.

9.03.00 MECHANICAL ITEMS

9.03.01 Dead Weight Tester: Quantity one number

Dual range dead weight pressure gauge tester with all

required accessories shall be provided for testing of

pressure gauges. The measuring range shall be 1-600

Kg/Cm2 with an accuracy not less than 0.025% other

requirement shall be as per detailed engineering.

9.03.02 Vacuum Tester: Quantity Two Numbers.

Air operated dead weight type vacuum tester along with

electrically operated vacuum pump and all required

accessories shall be furnished. It shall have a

measuring range of 15-1000 mm bar and an accuracy of

+/- 0.03 % or better.

9.03.03.1 Hydraulic Pressure Gauge Tester: Quantity one number

A hydraulic pressure gauge tester comprising of primary

pump using light hydraulic mineral oil shall be

furnished to compare the gauge under test with a

standard test gauge for pressures up to 600 Kg/Cm2.

The accuracy shall be +/- 0.05% of full scale. Gauge

connection shall be 1/2″, 1/4″ & 1/8″ NPT. All required

accessories are to be supplied.

9.03.03.2 Portable Hydraulic Pressure Generator: Quantity 1 No.

Portable Hydraulic Pressure Generator comprising of two

stage pump using light hydraulic oil shall be provided

to generate pressure of approx. 15 bar (1st stage) & 600

Bar (Second Stage). Provision for mounting standard

pressure gauge and five volume adjustment shall be

there with the unit.

9.03.04 Portable Pressure Calibrator: Quantity Three Numbers

It shall be microprocessor based and operated by

rechargeable battery & by 240 AC, single phase, 50 Hz.

Accuracy +/- 0.05% over pressure protection & indication

shall be provided. Tentative pressure range shall be

1.06 bar to 1000 bar, +/- 2000 mm WC, 1 to 60 bar

(subject to finalization during detailed engineering).

All required accessories to be provided.

9.03.05 Manometers

a) Test Manometers (Mercury well type): Quantity 2 Nos.

It shall have 1500 mm extended transparent plastic tube.

Scale shall be compensated for liquid level changes

and shall be graduated in mm of Hg and Kg/Cm2 Body shall

be made of steel. Test pressure to be 17.5 Kg/Cm2. All

accessories to be provided.

b) U-Tube Manometers (Water filled): Quantity 2 Nos.

It shall be clear plastic U- Tube/ Borosilicate glass

tube. The scale range shall be 1000-0-1000 mm

having 1 mm smallest division and zero adjustment

facility. All wetted parts shall be 304SS. All required

accessories to be provided.

c) Inclined Manometer (Water Filled) : Qty. 2 Nos.

Range - 100-0-100 mm WC

9.03.06 Secondary Standard Quality Pressure Gauges :

The bidder shall provide 2 sets of secondary standard

quality pressure gauges of each range as required for

comparing different gauges in the bidder’s scope.

Accuracy shall be +/-0.25% of full scale or better.

9.03.07 Air Sets: Quantity 4 Nos.

Input - 6-7 Kg/Cm2 as per instrument air system.

Output – As required by Instrument/ drive

Filter – 5 micron

9.03.08 Portable Electro-Pneumatic Calibrators: Quantity 2 Nos.

The electro-pneumatic calibrator shall be microprocessor

based and used for calibration of electronic and

pneumatic instrumentation as supplied by the bidder.

These shall have accuracy of +/- 0.05% & shall be

complete with all adapters & accessories. 4-20 mA DC

output to be provided for E/P converter and E/P

converter output should also be measured by it. Power

supply shall be (i) rechargeable battery and (ii) 240 V,

1 Ph, 50 Hz.

9.03.09 Fluidized Temperature Bath: Quantity 1 No.

The temperature bath shall be microprocessor based and

shall have fully controlled temp.range of 100 to 600

Deg.C Temperature stability shall be +/- 0.2 Deg.C or

better over whole range.

9.03.10 Thermocouple Test Furnace: Quantity 1 No.

This furnace shall be microprocessor based and used for

precise comparison of up to 6 test thermocouples with a

checking thermocouple up to a maximum temp. of 1200

Deg.C. It shall be suitable to make temp. checks with

least uncertainty of about +/- 1 Deg.C over the full

range.

9.03.11 Barometers : Quantity 1 No.

The bidder shall furnish precision aneroid barometers,

accurate to +/- 0.3% of full scale or better dial size

shall be 150 mm. Graduation shall be 0.5 mm and range

shall be as per detailed engineering.

9.03.12 Mercury Thermometers: Quantity 2 sets of Approx. 12 Nos.

each

These shall cover a temperature range of 10 Deg.C to

600 Deg.C. Various split ranges shall be as per

detailed engineering.

9.03.13 Flow meter Calibrators: Quantity 2 Nos.

One each for the ranges 0-1000 mm WCL & 0-30,000 mm

WCL. Type shall be finalised during detailed engg.and

will be subject to employer approval.

9.03.14 Portable Tachometer: Quantity 2 Nos.

It should be latest proven non contact type digital

suitable up to 6000 RPM.

9.03.15 Coil Winding Machine: Quantity 1 No.

It shall be single phase motor driven with all

accessories to wind wires of dia 0.001″ to 0.036″.

9.03.16 Stop Watches: Quantity 3 Nos.

It shall have provision of Analog & Digital display.

9.03.17 Precision instrument radial drilling machine with all

standard tools.(1 No.)

9.03.18 Jewelers lathe, with provision for screw cutting,

precision cutting and other related mechanical work,

with all necessary accessories & CAD/CAM software.(1 No.)

9.03.19 Standard tool box for instrument maintenance work

(5 sets).

It shall comprise of multi purpose screw drivers, Rachet

screw drivers, star screw drivers, spanners, cutters,

pliers, allen keys (all type), Nose plier, Rough &

smooth files, slide & pipe wrench etc.

9.03.20 Wet & Dry Bulb Hygrometer (1 No.)

Measuring range shall be 20% - 100% with digital

indication. Accuracy shall be +/- 0.2%.

9.03.21 Soldering/ Desoldering Station: Quantity 2 Nos.

Precision type with built in temperature controller.

All required accessories shall be provided.

9.03.22 Vacuum pump- 1 No.complete with vacuum gauge(0-760mm Hg)

shall be able to provide vacuum of 3×10 Sq mbar or

better. It should be provided with all accessories.

9.03.23 Solder sucker – 2 Nos.

9.04.00 ELECTRICAL ITEMS

Digital Multimeters

1 1

Quantity : 3 2 digit handheld – 10 Nos. 4 2 digit

handheld – 4 Nos. and 4 and a half, 5 and a half, 6 and

a half desk top model – 2 Nos. each.

Type, signal & ranges shall be as per detail

engg.subject to employer approval. Input resistance

shall be 10 M ohm, Ambient temp.shall be 0-50 Deg.C.

9.04.02 Portable Current Calibrator: Quantity 5 Nos.

This instrument shall be microprocessor based and

provide an accurate and reliable measurement of milli

Amp.signals and shall generate milli Amp. signals for

use in calibrating receiver type instrumentation.

Accuracy shall be +/-0.05% of selected span or better.

CMRR (DC to 50 Hz)of 0.1 micro Amp./volt and ambient

temp.errors of 0.0005% per Deg.C. The instrument should

be powered by (i) 240 V, 1 Ph, 50 Hz & (ii)by self

contained rechargeable battery. The selectable input &

output range shall be 0-10/ 0-100 mA DC with built in

auto overload protection.

9.04.03 Portable Milli Volt Calibrator: Quantity 5 Nos.

This instrument shall be microprocessor based and

provide an accurate and reliable measurement of

millivolt/ thermocouple signals and shall generate

millivolt signals for calibration of receiver type

instrumentation. Accuracy shall be +/-0.02% of selected

span or better. The instrument should be powered by

(i) 240 V, 1 Ph, 50 Hz & (ii) by self contained

rechargeable battery. The selectable input & output

range shall be 0-10 mv/ 0-100 mv/ 0-1000 mvDC. CMRR(DC

to 50 Hz) shall be 120 db and ambient temp. error

shall be +/- 0.005 % per 1 Deg.C.

9.04.04 Resistance Thermometer Bridge: Quantity 2 Nos.

This instrument shall provide measurement of resistance

values for verification of RTD elements and receiver

instrumentation. The resolution and accuracy shall be

0.001 ohms & +/- 0.005 ohm or better respectively. The

range shall be 0-1000 ohms.

9.04.05 Decade Resistance Box : Quantity 2 Nos.

This variable resistance device shall provide an

accurate resistance source for calibration of RTD

elements and receiver devices. Accuracy shall be +/-

0.05% or better. Resistance range shall be 0-100 K ohm

& increments shall be 0.1 ohm.

9.04.06 Variac : Quantity 1 No.

Light weight variac, providing variable voltage up to 500

V shall be provided. Input shall be 415 V, 3 Ph. 50 Hz.

9.04.07 Rheostat/ Potentiometer: Quantity 10 Nos.

2 Nos. each of following ratings:

18 Amps, 1 ohm, 15 Amps, 1.4 ohms,12 Amps, 3 ohms: 8.5

Amps, 6.5 ohms; 5 Amps, 18 ohms. They shall be wire

wound continuously variable type. The insulation

resistance shall be more than 5 M ohms at 500 V DC

between terminal & case.

9.04.08 Test Resistance Temperature Detectors: Quantity 2 Nos.

The resolution be 0.001 Deg.C.and range shall be 0 to

1000 Deg.C.

9.04.09 Portable Thermocouple/ RTD calibrator/ simulator:

Quantity 1 No.

This microprocessor based instrument shall be used for

calibration/simulation of thermocouples/ RTDs as

supplied by the Bidder. The linerisation accuracy shall

be +/- 0.01 of reading or better and calibration

accuracy shall be +/-0.05% or better. Range shall be as

per detailed engg. it should be suitable for 240 V, 1

Ph, 50 Hz power supply and (ii) rechargeable type

batteries. All accessories to be provided.

9.04.10 Portable Multi-Function Counter : Quantity 1 No.

The bidder shall furnish microprocessor based and

crystal-controlled oscillator based, dual channel multi-

function counter to measure frequency, period, frequency

ratio, time interval and unit count. The accuracy for

frequency shall be +/- 1 count +/- time base error.

9.04.11 Digital Storage Oscilloscope : Quantity 1 No.

Latest proven two channel, digital storage oscilloscope

will be supplied for the instrument shop. All required

accessories including probes shall be provided.

9.04.12 Power Pack : Quantity 3 Nos.(0.5 KVA each)

3 Nos. of highly stabilized, solid state, power supply

packs with over voltage/ current limiting output

protections shall be provided for output range of 0-60 V

DC (Two) and 240 V AC(one), regulation shall be 0.01% or

better.

9.04.13 Portable Vibration Meter : Quantity 1 No.

This instrument shall be of latest & proven design

capable of measuring vibration of machinery in terms of

displacement, velocity and acceleration. Power supply

shall be (i) 240 V 1 ohm 50 Hz and (ii)rechargeable

batteries. All required accessories shall be provided.

The displacement, velocity & acceleration ranges shall

be 0-3000 microns, 0-300 mm/sec. and 0-100 mm/sec2

respectively.

9.04.14 RCL Bridge : Quantity 1 No.

Microprocessor based RCL bridge shall be provided. The

measurement accuracy shall be +/- 0.5% of reading or

better.

9.04.15 PH Simulator : Quantity 1 No.

Range: 0-14 PH in steps of 1 PH, Accuracy +/-0.01 PH.

9.04.16 Multichannel Simulation Unit(Analog) Quantity 1 No.

No.of Channels: 20, Accuracy +/- 0.1% of span.

9.04.17 Digital Channel Simulator: Quantity 1 No.

No.of Channels:40, Status selection by toggle switches.

9.04.18 Function Generator: Quantity 1 No.

1. Waveforms- Sine, square,triangle, pulse & ramp with

variable symmetry.

2. Symmetry – 10% to 90%, 1% step, +/- 2% accuracy.

3. Frequency- Range: 0.002 Hz to 20 MHz Accuracy:

a) Continuous mode – +/- 0.1%

b) Trigger, gate burst modes – +/- 0.1% (for

freq.less than or equal to 200 Hz) & +/- 5.0%

(for freq.more than 200 Hz).

9.04.19 Portable Infrared Pyrometer : Quantity 1 No.

Range shall be 300 to 1600 Deg.C.with digital display

for Temp. measurement of flames of coal & furnace oil of

burner.

9.04.20(a)Clip on AC Power Meter : Quantity 1 No.

Range shall be 20-600 vrm, 0-2-20 A rm, 0.2-20 Amps. and

accuracy shall be +/- 1% of reading + 0.5% of range.

(b)Clip on DC Amp. Meter – Qty – 1

0 – 2 – 20 Amps.

9.04.21 Portable Gas Analyser : Quantity 1 No.

For measurement of Oxygen, CO, NOX, SOX, CO2 in flue

gases.

9.04.22 Portable Surface Pyrometer (Infrared): Quantity 1 No.

Range shall be 0 Deg.C. to 300 Deg.C.for measurement of

Bearing metal Temp.of motors, pumps, turbine.

Lesser sight pin points measured spot.

9.04.23 Lab PC + laser printer (size A4): Quantity 1 No.

Latest Window ,database and spare part management

software. Calibration software and connected with system

bus.

9.04.24 Digital Megger : Qty. 2 Nos.

It should measure upto 100 M ohm at 500 V.

9.04.25 Portable Vibration Analyser/ Dynamic Balancer(Two plane)

Qty. 1 No.

The instrument shall be latest and proven design. All

required accessories shall be provided with vibration

analysers. The analyser shall capable of On line

machine diagnostic by FFT Analysis, data collection and

two plane balancing of machine. The bidder shall supply

1 No.PC with printer for OFF line vibration analysis and

diagnostic of turbine and other rotating machine.

9.04.26 Portable Universal Input Type Chartless 30 Point

Recorder : Qty. 1 No.

9.04.27 Single Battery Cell Charger : Qty. 1 No.

For charging of single PLANTE Battery cell.

9.04.28 DDCMIS Module Testing kit for complete diagnostic

testing of DDCMIS modules in addition to built in

diagnostics present in DDCMIS. The facilities shall

include functional processor test, working memory test,

communication controller test, I/O module test.

9.04.29 Test Bench for Electrical Actuator( 415 V AC)

9.05.00 Visual Training Aid Quantity in Nos.

a) LCD Projector - 1

b) Laptop PC - 1

c) Engraving Machine - 1

Comments (1)

10.CONTROL AND INSTRUMENTATION CABLE October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:29 am
Tags: instrumentation cable

10.00.00 CONTROL AND INSTRUMENTATION CABLE

10.00.01 The Bidder shall supply, erect terminate and test all

instrumentation cables for control and instrumentation

equipment/ devices/systems included under bidder’s scope

and ensuring completeness of the control system.

10.00.02 Any other application where it is felt that

instrumentation cables are required due to system/

operating condition requirements, are also to be

provided by bidder.

10.00.03 Other type of cables like co-axial, optical cables for

system bus, cables for connection of peripherals etc.

(under bidder’s scope) are also to be furnished by the

bidder.

10.00.04 Bidder shall supply all cable erection and laying

hardware like cable trays, supports, flexible conduits,

cable glands lugs pull boxes etc.on as required basis

for all the systems covered under this specification.

10.00.05 In addition to above, bidder shall supply all the

cables including co-axial cables for station wide WAN

interconnecting all the common plant, main plant &

control system is bidder’s scope as well as the control

systems supplied by employer for Electro Static

Precipitators, D M plant, coal handling plant, ash water

recirculation system etc. Further, the instrumentation

cables for interconnecting few Nos.information signals

from each of the common plant packages being supplied by

employer and for all signals of CW pump package to DDCMIS

are also in the scope of bidder.

10.01.00 INSTRUMENTATION CABLE SPECIFICATIONS

10.01.01 All the instrumentation cables i.e. twisted and

shielded multipair cables, compensating cables, pre

fabricated cables etc. shall be flame retardant low

smoke (FRLS) type. The cables shall be provided in non

returnable drums. The drum length shall be 1000 m

(+/- 5%) up to & including 12 pairs and 500 m (+/- 5%)

above 12 pairs and B-type thermocouple cables.

10.01.02 Voltage grade of the instrumentation cables shall be

600 V (peak value).

10.01.03 All instrumentation cables covered in this specification

shall comply with VDE 0815, VDE 0207, part 4, part 5,

part 6, VDE 0816, VDE 0472, SEN 4241475, ANSI MC 96.1,

IS-8784, IS-10810 (latest editions) and its amendments

read along with this specification.

10.01.04 The conductor shall be of minimum 0.5 Sq.mm size, high

conductivity, multi-stranded copper for all types of

instrumentation cables, except the thermocouple

extension cables which shall be 1.31 mm Sq. solid alloy

type.

10.01.05 The insulation of individual conductor shall be

extruded PVC meeting the requirements of VDE 0207 part 4

compound Y I3. The outer sheath of instrumentation

cables shall be extruded PVC (compound YM1)as per VDE

0207 part 5 and shall be of flame retardant low smoke

(FRLS)type. The cable shall be provided with marking

including manufacturer’s name, insulation material,

conductor size, No.of pairs, voltage ratings, type of

cable etc. Progressive sequential marking of the length

of the cable at every one meter & progressive markings

to read FRLS at every 5 Mtrs. shall be provided on the

outer sheath of all instrumentation cables. Pairs of

cables shall be identified by colour coding & colour

banding. The colour of outer sheath shall be sky blue

so that C&I cables are easily distinguished from other

cables.

Fillers in multiple conductor cables shall be flame

retardant and moisture resistant. Cable accessories

such as harnessing components, markers, bedding, cable

jointer, binding tape etc. shall also have flame

retardant quality.

10.01.06 All instrumentation cables shall be provided with

overall shielding. However multipair cables carrying

analogue signals shall be provided with individual pair

shielding in addition to over all shielding. Shielding

shall be of Aluminium-Mylar tape with 100% coverage and

with at least 20% overlapping. The thickness of

individual pair shield shall be 28 micron(Min)and that

of over all shield shall be 55 microns(Min). Separate

drain wires for individual pair shield(wherever

applicable)as well as over all shield shall be provided.

Drain wire shall be of seven(7) strand 20 AWG(0.51

Sq.mm)tin coated copper conductor. Maximum lay of

individual twisted pair shall be 50 mm. Bidder to ensure

that individual core diameter shall be suitable for

maxi-termi connection. Insulation thickness of

individual core shall be between 0.28 and 0.35 mm for

0.5 Sq.mm cables and 0.35 to 0.45 mm for 1.31 Sq.mm

cables.

10.01.07 The outer sheath of the instrumentation cables shall

meet the following minimum requirements.

(i) An Oxygen index of not less than 29% and a Temp.index of

not less than 250 Deg.C. as per ASTMD-2863.

(ii) Maximum acid gas generation by weight as per IEC-754-I

shall not be more than 20%.

(iii) Smoke Density rating shall not be more than 60% during

Smoke Density Test as per ASTMD-2843. The results of

smoke density test shall be plotted on a curve

indicating light absorption vs time as per ASTMD-2843.

The average area under the curve(smoke density rating)

shall not be more than 60%.

(iv)Complete cable assembly shall pass Swedish Chimney test

as per SEN-4241475 and flammability test as per IEEE-383.

The thickness of outer sheath shall be as per the

guidelines given in VDE-0816. Thickness of outer sheath

shall not be less than 1.8 mm in any case. Allowable

tolerance of over all diameter of the cables shall be

+/- 2 mm Max.over the declared value in technical data

sheets. The variation in diameter and the ovality at

any cross section shall not be more than 0.1 mm.

10.01.08 All instrumentation cables shall be suitable for

continuous operation at 85 Deg.C. except for high

temp.resistant Teflon insulated cables which shall be

suitable for continuous operation at 205 Deg.C. The

cables shall be suitable for laying in wet or dry

locations in trays, conduits, ducts, trenches and under

ground buried installations.

10.01.09 The thermocouple extension cables shall be of single/

multi pair, twisted & shielded, PVC insulated, FRLS PVC

sheathed and compatible for the type of thermocouples

employed. The material of conductor shall be as per

ANSI MC-96.1. The material and requirements of

conductor insulation, shielding and outer sheath shall

be as per Clause No.10.01.04 to 10.01.07.

10.01.10 All cables near high temp. zone like burner front

devices metal temp.thermocouples on main steam & turbine

casing etc.shall be high temp.cables, which shall be

terminated at a junction box in normal temp. zone.

Thermocouple extension cables and copper conductor

cables for high temp.applications shall be with

insulation of individual conductor and outer sheath of

extruded FEP (i.e. Teflon)as per VDE-0207 part 6 and

ASTMD-2116. The thickness of insulation shall be 0.5 mm

nominal (i.e.0.4 mm Min.). These cables shall be single/

multipair, twisted & shielded.

10.01.11 Identification of the cores & pairs shall be done with

suitable colour coding & band marking as well as by

numbering of cores/ pairs as per VDE-0815. The details

of colour coding etc.shall be as approved by employer

during detailed stage.

10.01.12 For analog signals individual pair shielding & over all

shielding and for binary signals only over all shielding

of instrumentation cable.

10.01.13 Cable Parameters at 20 Deg.C

a) Mutual capacitance at 0.8 KHz (Max) shall be 120 nF/KM

for type F & I, 100 nF/KM for G Type and 200 nF/KM for

compensating cable.

b) Max. Conductor resistance shall be 73.4 ohm/KM loop.

c) Insulation Resistance shall be 100 M ohm/ KM.

d) Cross talk fig at 0.8 KHz shall be 60 db.

e) Characteristic impedance (Max) at 1 KHz shall be 320 ohm.

f) Attenuation fig at 1 KHz (Max) shall be 1.2 db/ KM.

10.01.14 Description of various type of Cables

i) Type “A” Size 1.31 Sq.mm -

Two pair shielded and twisted pair T/C Extn.cable, ANSI

type KX, solid alloy conductor.

ii) Type “B” Size 1.31 Sq.mm -

Two pair shielded and twisted T/C Extn.cable, ANSI

type SX, solid alloy conductor.

iii) Type “C” Size 1.31 Sq.mm -

Two pair shielded and twisted heat resistant teflon

Insulation & outer sheath T/C Extn.cable, ANSI type KX,

solid alloy conductor.

iv) Type “E” Size 0.5 Sq.mm -

Two pair individual pair and over all shielded twisted

pair instrumentation cable for both analog and digital

signal to be used from field mounted instruments to

local junction box.

v) Type “F” Size 0.5 Sq.mm

Multipair individual pair and over all shielded twisted

pair instrumentation cable (4/8/12 36/48 pair) for

analog signals with stranded copper conductor.

vi) Type “G” Size 0.5 Sq.mm

Multipair over all shielded & twisted pair

instrumentation cable (4/8/12 24/48/64 pair) for binary

signals with stranded copper conductor.

vii) Type “I” Size 0.5 Sq.mm

Type F cable/type G cable with heat resistant teflon

insulation & outer sheath for high temp. application.

10.01.15 All instrument cables shall be Galvanized steel wire armoured type conforming to Indian Standard (IS-3975).

10.01.16 All cables shall be Anti rodent and antitermite type.

10.01.17 Cables for relay based system shall be cable of 1.5

Sq.mm conductor size

10.02.00 Instrumentation Cable Interconnection and Termination

Philosophy.

10.02.01 Plug in Connector(Military Standard)

a) Valve, Damper/ drive (internal junction boxes).

b) Transmitter, E/P Converter process actuated switches.

c) RTD, Thermocouple

d) Field mounted instrument

10.02.02 Cage Clamp Type

a) Marshalling Cubicle

b) Local Junction Box

c) C J C Box

10.02.03 Prefab Cable

a) System Cabinet

b) UCP Mounted Instrument

c) Annunciation System

10.02.04 Manufacturer’s Standard

a) P A System

b) Flame Scanner etc.

e) PC, Printer

10.03.00 Internal Panels/ Cabinets/ System Cabinets Wiring

10.03.01 Internal panel/ cabinet wiring shall be of multi

stranded copper conductor with FRLS halogen free PVC insulation without shield and outer sheath meeting the requirements of VDE-0815 .

10.03.02 Wiring to door mounted devices shall be done by 19

strand copper wire provided with adequate loop lengths

of hinge wire so that multiple door opening shall not

cause fatigue breaking of the conductor.

10.03.03 All internal wires shall be provided with tag &

identification Nos.etched on tightly fitted ferules at

both ends in Employer’s approved format. All wires

directly connected to trip devices shall be

distinguished by one additional red colour ferrule.

10.03.04 All external connection shall be made with one wire per

termination point. Wires shall not be tapped or spliced

between terminal points.

10.03.05 All floor slots of desk/panels/cabinets used for cable

entrance shall be provided with removable gasket gland

plates and sealing material. Split type grommets shall

be used for prefabricated cables.

10.03.06 All the special tools as may be required for solder less

connections shall be provided by bidder.

10.03.07 Wire sizes to be utilized for internal wiring -

i) Current(4-20 mA) : 0.5 Sq.mm

Low Voltage Signals(48 V)

ii) Ammeter/ Voltmeter Circuit, : 1.5 Sq.mm

control switches etc.for

Electrical System.

iii) Power supply and internal : 2.5 Sq.mm Min.

illumination. (shall ne as per

load requirement).

10.04.00 Junction Boxes (Field Mounted)

a) With 20% spare terminals

b) 3 mm thick made of Aluminium

c) Protection Class – IP-65 or better

d) The terminal Block shall be screw less cage clamps type

e) Lockable from front and hinge door

f) Bidder shall submit Type Test Report confirming to

protection Class IP-65 for review.

10.05.00 Conduits

All rigid conduits, couplings and enbows shall be hot

dipped galvanized rigid mild steel in accordance with

IS:9357 Part-I(1980) and Part-II(1981). The conduit interior

and exterior surfaces shall have continuous zinc coating

with an overcoat of transparent enamel lacker or zinc

chromate. Flexible conduit shall be heat resistant lead

coated steel, water leak, fire and rust proof. The temp.

rating of flexible conduit shall be suitable for actual

application.

10.06.00 Optical cable shall be steel Armour, low smoke, flame

retarded (IEEE 383).

10.07.00 Tests (Instrumentation Cable)

10.07.01 All types and sizes of cables being supplied shall be

Subjected to type tests routine tests and acceptance

test as specified and according to relevant standards.

10.07.02 FLAMMABILITY TEST

Finished cable shall pass the flammability test as per IEEE-383. In addition it shall also pass flammability test as per Class F 3 of Swedish Standard SS-4241475 (1978). The cables in the installation can be of any (or all) of the various types specified. However in case of failure to pass this test, the whole lot shall be subjected to rejection.

10.07.03 ROUTINE TEST

Routine tests shall be carried out for each drum of cables for all types and sizes. The following shall constitute routine as bare minimum.

a) Conductor Resistance Measurement

b) Insulation Resistance Measurement

c) High Voltage Test as per D (3).

10.07.04 FACTORY ACCEPTANCE TEST

Acceptance test shall be carried out on each type and size of the instrumentation cables for acceptance of a lot. All tests except the following tests shall constitute acceptance tests as bare minimum. Items B-3,

4,5,6,7,8,9,11 & d(3) as mentioned above.

Further the following acceptance test shall also be

carried out -

1) Swedish chimney test as per SEN 4241475 and IEEE

383.

2) High voltage test(Water immersion test)AC & DC

test as per IS-5831.

3) Volume resistivity test(for sheath)as per IS-5831.

4) Check for markings and over all diameter of cables.

5) Cable length/ surface check.

6) Mutual capacitance test.

7) Attenuation test.

8) Characteristic Impedance Test.

9) Cross talk test.

10) Visual verification of length & surface.

10.07.05 TYPE TEST

Type test shall be carried out on all the type and sizes of cables. The following shall constitute the type test

to be conducted as minimum.

(A) For Conductor (including Drain Wire)

1. Resistance Test - IS-5831/ IS 1554

2. Diameter - IS 10810

3. Tin Coating Test - IS 10810(per sulphate test)

4. No. of Strands -

5. Size of each strands-

6. Twisting Lay -

(B) For PVC Insulation PVC Sheath

1. Test for thickness dia, availability

as per spec./ approved data sheet

2. Tensile strength & elongation – IS 10810

Test before & after aging

3. Aging in air ovens - IS 10810

4. Loss of mass tests - IS 10810

5. Hot Deformation test - IS 10810

6. Heat shock test - IS 10810

7. Shrinkage test - IS 10810

8. Cold bend/cold impact test - IS 10810

9. Colour fastness to water - IS 10810

10. Thermal stability test - IS 10810

11. Bleeding & blooming - IS 10810

12. Oxygen index test(for outer - ASTMD-2863

sheath and fillers)

13. Smoke Density Test - ASTMD-2843

(for outer sheath and fillers)

14. Acid gas generation test -(IEC-754-1)

(for outer sheath and fillers)

(C) For AL-Mylar Shield (Individual & over screen)

1. Continuity Test as per relevant IS.

2. Shield Thickness measurement as per approved data sheet.

3. Shield coverage & Overlap as per spec./ approved data

sheet.

4. Noise Interference Test(IEEE)

5. No.of Strands in drain wire

(D) For Completed cables

1. Dimensional checks - IS-10810

2. Insulation Resistance - IS-10810

3. High Voltage test - IS-10810

(dielectric strength and

resistance to direct current)

4. Flammability test - IEEE-383, SS4241475

Ref.No.10.06.02 below

5. Drain wire continuity test – As per relevant standard

6. Mutual Capacitance - VDE -0472

(Wherever applicable)

7. Cross talk - IS-10810

8. Noise Interference Test –

10.07.06 For these tests, the selection of cable drums shall be at random, as per the following sampling plan.

——————————————————

S.No. No.of Drums in the Lot No.of Drums to be

Taken as sample

——————————————————-

1. Up to 50 2

2. 51 to 100 5

3. 101 to 300 13

4. 301 to 500 20

5. 501 & above 32

10.08.00 GENERAL

10.08.01 Cable shall segregated as per IEEE-422.

10.08.02 Cable Glands

Cables shall be terminated using double compression type cable glands. Cable glands shall conform to BS: 6121 and be of robust construction capable of clamping cable and cable armour (for armoured cables) firmly without injury to insulation. Cable glands shall be made of heavy duty brass machine finished and nickel chrome plated. Thickness of plating shall not be less than 10 micron. All washers and hardware shall be made of brass with nickel chrome plating Rubber components shall be of neoprene and of tested quality.

10.08.03 Cable Trays

Cable trays, fittings and accessories shall be fabricated out of rolled mild steel sheets free from flaws such as laminations, rolling marks, pitting etc. These(including hardware)shall be hot dip galvanized as per relevant IS.

Comments (1)

11.PROCESS CONNECTION , PIPING AND INSTALATION REQUIREMETS October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:25 am
Tags: Process connection

11.00.00 PROCESS CONNECTION AND PIPING AND

INSTRUMENTATION INSTALLATION REQUIREMENTS

11.01.00 All process connection , piping etc shall be conform to ANSI/ISA SP 77.70- 1994 (R 2005) “ Fossil Fuel Power Plant Instrument Piping Installation” , ANSI B 31.1 Power Piping ,ANSI/ASME B 1.20.01 ,ANSI/ASME B 16.5 ,PTC 19.11.1997,PTC 23.2003 & IBR .

11.02.01 Impulse Piping/ Tubing System

Instrument impulse piping, tubing fittings and

accessories for the connection of instruments and

control equipment to the process and to make the system

complete shall be furnished. All materials furnished

shall meet the requirements of ASTM and ANSI standards

for the equivalent of these standards. The impulse

piping, tubing, fittings and accessories shall have the

same design pressure and material temp.as applicable for

the particular main process piping.

11.02.02 For instruments/ devices mounted inside enclosures racks

also the impulse pipes of the same material as main

process pipe shall be employed except that tubes (as per

ASTM A 213)shall be employed for connections from tee

(inside the transmitter enclosures/racks)to value

manifolds and instruments. The impulse tube material

for high pressure application shall be 316 H stainless

steel and low pressure application 316 L stainless steel.

11.02.03 All impulse pipe shall be of seamless type and shall

conform to ANSI B 31.1 for schedule Nos .sizes and

dimensions etc.

11.02.04 The valve manifolds shall be of stainless steel 316 with pressure rating suitable for intended application.2valve manifold and 3 valve manifold shall be used for pressure measurements using pressure transmitters/pressure switches and Diff. Pressure transmitters/switches respectively. 5 valve manifold shall be used for remaining applications like DP, flow and level measurements.

11.02.05 Condensate pots, also referred to as reservoirs, shall be designed in accordance with ANSI B 31.1.

11.02.06 Fittings and fitting components shall contain no metallic mercury or mercury compounds and shall be free mercury contamination, except as alloying elements of the required base or bonding corrosion resistant plating.

Fittings and fitting components shall not contain low melting-point metals (such as lead, antimony, arsenic, bismuth, cadmium, magnesium, tin or zinc)in concentrations greater than 250 ppm, except as alloying elements of the required base materials. Asbestos shall not used .

11.02.07 All fittings shall be forged steel and shall conform to ANSI B 16.11.The material of forged tube fittings for shaped application (e.g. Tee, elbow etc.)shall be ASTMA 182 Gr.316 H for high pressure/ Temp. applications and ASTMA 182 Gr.316 L for other applications. The material for bar stock tube fitting (for straight application) shall be 316 SS. Metal thickness in the fittings shall be adequate to provide actual bursting strength equal to or greater than those of the impulse pipe or SS tube, with which they are to be used.

11.02.08 The source shut-off(Primary process root valve) and blow down valve shall be of half inch size globe valve type for all applications except for air & flue gas service wherein no source shut-off valves are to be provided. The disc and seat ring materials of carbon steel and alloy steel valves be ASTM A-105 and ASTM A-182, Gr.F22, hard faced with stellite (Min. hardness 350 BHN). The surface finish of 16 RMS or greater is required in the area of stem packing. The valve design shall be such that the seats can be reconditioned and stem and disc may be replaced without removing the valve body from the line.

11.02.09 Blow down valve shall be gradual open type.

11.03.00 Air Supply Piping

(a)The bidder shall include in his scope, all pneumatic

piping, fittings, valves air filters, regulators and

other accessories required for instrument air for the

various pneumatic devices/ instruments from the Owner’s

instrument air terminal point to the bidder’s pneumatic

devices/ instrument. The instrument air scheme shall be

subject to owner’s approval. The pneumatic piping shall

be of heavy duty GI( as per IS 1239). The quality and

itemized consumption of instrument air required

shall be indicated by the bidder.

(b) Copper tubing of 1/4″size , thickness of cu tubing shall not be less than 0.065 inch & light drawn temper tubing conforming to ASTM B-75. Copper tubing shall be PVC coated and tube fittings shall be of flare less brass.

11.04.00 Installation and Routing of Instrument Piping and Tubing

The primary impulse piping system shall include the

instrument piping and all required accessories from

process tap off up to the respective instruments. The

Contractor shall provide the necessary fittings and

accessories along with impulse pipes for completeness.

Special accessories such as condensing pots, reservoirs

and other devices etc. shall be provided and installed

wherever required by the design of the instruments in

accordance with the instructions of the instrument

manufacturer. In any case Bidder shall provide and

install condensing pots for all level measurements of

steam and water services. All flow measurements in

steam services and water services above 120 Deg.C.

Impulse piping shall include a blow down line and shut

off valve adequate for the duty requirements and for

withstanding continuous design pressure and temp.of

process medium. For process pressure equal or above 40

Kg/Sq.Cm.g or temp. above 300 Deg.C double valves shall

be used before connecting to the blow down header. The

blow down header shall have to be connected to the

nearest plant drain by the bidder and pipes of ASTM-A-

105 Gr. B to be provided by bidder on as required basis

for this purpose.

11.05.00 All impulse piping shall be supported rigidly at an

interval not exceeding 1.5 meters so as to prevent

excessive sag in piping. Process piping shall not be

used for supporting impulse piping.

Impulse piping shall be installed to permit thermal

expansion without placing excessive stress on the piping

and without affecting the gradient of slope. Long

continuous straight runs of piping shall always to

avoided. If required, expansion loops shall be provided

atleast every 2.5 meters to break the continuity.

Cold bending of impulse pipes shall be performed with

the use of a proper pipe bender with radius of bend

greater than 5 times the outside dia of the pipe. Bends

shall be true to angle and radius and shall be true

circular cross section of the pipe without buckling. Any

pipes damaged during bending operation shall not be

re-used.

11.06.00 All welded and acre wed fitting shall conform to ANSI-B-

16.11. Threads of piping components shall be taper pipe

thread in accordance with ANSI-B-2.1. All threads shall

be clean machine cut with all burrs and chips removed.

Lubricant shall be of dry file type.

11.07.00 Provision for continuous purging requirement is to be made for all air & flue gas applications.

11.08.00 Testing at site

a) Hydrostatic and pneumatic tests shall be performed on

all pipes, tubes, systems and shall confirm to ANSI-B 31.1 and ANSI/ISA SP 77.70- 1994 (R 2005).

All instrument piping/ tubing shall be hydrostatically

tested upon completion of erection. The test pressure

shall be 1.5 times the maximum process pressure.

b) Air header & branch pipes shall be air tested by pressure

Decay method as per ANSI – B 31.1 after completion of

erection.

11.09.00 Material Certification

11.09.01 Material of Construction

All material used in construction of piping and components

shall be certified by the manufacturer with a certificate of compliance to the ASTM/ASME specifications. The manufacturer

shall submit quality assurance program for material control and verification.

11.09.02 Certificates of Compliance

All certificates of compliance applicable to material used in a component should be furnished by the manufacturer with the material at the time of shipment.

12.PUBLIC ADDRESS SYSTEM October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:21 am
Tags: PUBLIC ADDRESS SYSTEM

12.00.00 PUBLIC ADDRESS SYSTEM

12.01.00 General Requirements

12.01.01 A Public Address System(PAS)common for station shall

be supplied by the Bidder to cover all operational areas

of the complete plant.

12.01.02 Public Address System shall consist of zones, sub-zones

and exchanges to interface all four zones among

themselves and also with employer’s existing telephone

exchange. The major zones and sub-zones shall be as

under.

(i) Zone 1 for unit area(35 per unit/70 for both unit)

(ii) Zone 2 for common plant area (20 point)

12.01.03(a)Each point shall be provided with a handset station and

its associated loudspeaker. The actual locations of

the handset stations/loudspeakers shall be as finalized

during detailed engineering.

(b) The Bidder shall provide all required cables, junction

boxes, earth wire and accessories like standard

brackets, nut-bolts, glands, lugs, conduit sleeves etc.

as required to complete the installation of all

equipments supplied in the PAS.

12.02.00 System Description

12.02.01 PAS shall have two modes, i.e. Paging mode and Party

mode. Each of the two modes shall be open line, common

talking type. Paging mode shall be used for locating a

person and for general instructions. Party mode shall be

used for conversation between individuals without

broadcasting the same over the loudspeaker.

12.02.02 Whenever the `Press to Page’ push button is pressed on

any of the handset stations, a pleasant chime shall be

broadcast over all the loudspeaker except the one

associated with that handset station to attract

attention. Conversation, in paging mode shall be heard

over all loudspeakers except the loudspeaker associated

with the handset station whose `Press to Page’ push

button is being held in pressed condition. When `Press

to Page’ push button is released the associated handset

shall return to party mode. When a handset station is

being used for party mode its associated loudspeaker

shall be free top receive all paging calls. However, the

operator shall have the option of silencing the

associated loudspeaker by pressing `Loudspeaker

mute’ push button, should be find it disturbing his

conversation on party mode. The loudspeaker shall

return to normal operation automatically when the

`loudspeaker mute’ push button is released.

Simultaneous operation on both modes, i.e. some handsets

on party channel and some handsets on paging channel,

shall be possible without any cross talk between the two

channels. Further, suitable indication of `Power supply

On’ and `party channel busy’ shall be provided on hand

set stations.

12.02.03 Portable type handsets with multipin plugs shall be

used at certain locations where operational personnel are

not present normally. Necessary sockets, wiring, etc.,

shall be provided at these locations. Quantity of

handsets shall be 5 Nos. for unit area & 5 Nos. for common

area. No.of sockets shall be 10 Nos. for unit area, 10

Nos.for CHP , 5 Nos. for common area and 5 for AHP area.

The location, details shall be finalised during

detailed engineering stage & shall be subject to

MPPGCL’s approval.

12.02.04 Inter Zone Communication

Each of the zones, i.e.unit common plant and coal

handling plant are shall be connected to a central

exchange. It shall be possible from a station in one

zone to be connected to another station of a different

zone through a master control units, to be located in

unit control desk. Another master control unit, in

parallel with the earlier one shall be located in shift

in change room. Further, suitable interface with

telephone exchange (existing)shall be provided so that

it shall be possible to communicate with any station in

any zone through master control unit from a telephone.

The central exchange shall have the capacity of future

expansion in No.of stations, zones, master control unit

and exchange.

12.02.05 Self Diagnostic Facility shall be provided.

12.03.00 Handset Stations

Each handset station shall be capable of continuous

satisfactory operation at ambient temperature of 55 Deg.C

Handset transmitter/receiver shall be noise canceling

type and shall have filters to protect from dust. All

switches and push buttons on the handset stations shall

be excapsulated contact type. Desk mounting type

(indoor) and wall mounting column type(outdoor) handset

stations shall have a degree of protection as per the

requirements specified in GTR of this specification.

12.04.00 Amplifiers

The PAS shall be of distributed amplifier type, i.e.

each loudspeaker shall have a separate power amplifier

of its own which may be located in the associated

handset station enclosure or in a separate enclosure.

Amplifiers shall be solid state, Class B push-pull type,

fully conforming to IS:1301 and IS:10426 or equivalent

international standard, with modular construction (card

type with edge connectors). Each amplifier shall have 0-

100% volume control setting, with bass cut filter and

external short circuit protection. Electronically

operated idle power cutoff feature shall be provided

for both pre-amplifiers and power amplifiers.

12.05.00 Loudspeakers

Indoor loudspeakers shall be cone type housed in sturdy

metal cabinet treated with acoustic undercoats to

prevent resonance and shall be suitable for wall/column

mounting. Outdoor loudspeakers shall be horn type. The

mounting brackets shall be with adjustable base suitable

for vertical and horizontal orientation. Acoustic hoods

shall be provided for handset stations located in noisy

areas like BFP, turbine firing floors, mills fans etc.

The design noise level within the hood shall be

limited to a maximum of 60 dB S.I.L.

12.06.00 Power Supply & Grounding

The Bidder shall provide stable, reliable and regulated

power supply and grounding system as required by the

system. Grounding shall be as per Indian Standard.

12.07.00 Technical Parameters

PAS shall conform to the following.

12.07.01 For overall installation Bandwidth (+/-3 dB shall be

400-6000 Hz.

12.07.02 For Amplifiers Bandwidth (+/- 3 dB) shall be 200-10000

Hz; Total Harmonic distribution shall be less than 1% at

rated output at 1 KHz; Signal/Noise ratio shall be 60

dB.

12.07.03 For Microphone Bandwidth (+/- 3 dB) shall be 200-7000

Hz; Type shall be noise canceling type.

12.07.04 For outdoor wall/column mounted horn type loudspeakers

capacity and bandwidth (+/- 3 dB)shall be 15 W (RMS)

and 200-7000 Hz respectively.

12.07.05 For indoor wall/column mounted cone type loudspeakers

capacity and bandwidth (+/- 3 dB)shall be 4 W (RMS)

and 200-7000 Hz respectively.

12.08.00 Signal Loop Length

Signal Loop Length (Cable) shall be as per requirement.

12.09.00 Cables, Junction Boxes & Other Accessories

The bidder shall supply all cables, junction boxes and

other accessories required for PAS. All cables shall be

standard copper conductors, PVC insulated, extruded PVC

inner sheathed, overall PVC sheathed & shielded. All

junction boxes and accessories shall meet all the

specification requirements as specified at relevant

clause of this specification.

12.10.00 Testing, Calibration & Maintenance Equipment

(a) Digital Multimeters - 4

(b) Megger - 1

Multipurpose tool box,

Screw drivers, spanners,

Allen key, nose plier,

Files etc.

Comments (1)

13.CONTROL & INSTRUMENTATION FOR PLANT AUXILIARY October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:18 am
Tags: bop, plc

13.00.00 CONTROL & INSTRUMENTATION FOR PLANT AUXILIARY

PACKAGES

13.01.00 Bidder shall provide complete and independent control

and instrumentation system with all accessories

auxiliaries associated equipment and cable for safe,

efficient operation of plant auxiliary system.

13.02.00 Bidder shall include in his proposal all instruments

and devices which are needed for the completeness of

the plant auxiliary system/ equipment supplied by the

bidder, even if the same is not specifically appearing

in specification and measurement shall be to meet actual

system requirement subject to owner’s approval.

13.03.00 Bidder shall provided independent control system for

safe, efficient and reliable operation of plant

auxiliary systems the type of control system shall be as

follows :-

13.03.01 Hot Redundant PLC Based Control without OWS

i) Compressed Air System

ii) Air Conditioning System

13.03.02 Relay Based Control System

i) Fuel oil Handling and Storage System

ii) Ventilation System

iii) Mill Reject Handling System

iv) Miscellaneous Pump

13.03.03 Microprocessor Based

Fire detection and protection system.

13.04.00 The control monitoring operation of all above plant

Aux.System shall be carried out from control panel/desk.

13.05.00 Bidder shall provide all interlock for safe reliable

operation of each plant Aux.system. The protection and

interlock system shall be subject to approval of owner.

13.06.00 Primary Instruments

13.06.01 All instrument used measurement of Hydrogen shall be

intrinsic safe and explosion proof as per NEC Article

500, Class-1, Division-1.

13.06.02 All primary instrument used for measurement of HFO, LDO

shall be flame proof.

13.06.03 The protection Class of all primary instrument shall be

IP 65 or better.

13.06.04 The protection Class of primary instrument installed in

minus floor shall IP 68.

13.06.05 For HT Motors/Important LT Motors command shall be provided

through redundant I/O. The Status of important drive and

HT Motor shall wired in parallel to redundant input module.

13.07.00 Desk / Panel

13.07.01 The control monitoring operation of all plant Aux.system

shall carried out from control panel/desk only. The

control panel shall have mimic diagram, push button

indicators, recorder, indicating lamps selector switch,

control switch, ammeters, voltmeters etc. as per

requirement.

13.07.02 Mimic plate shall be polyester based fiber laminated.

Mimic shall be 7 mm thick.

13.07.03 Painting & Colour Shade

Treatment as per IS-6005. Two coats primer followed by

powder painting with final shade of RAL 7032.

13.08.00 Relay Based Control System

13.08.01 Panel Construction

a) Fabrication from cold rolled stainless steel

b) Frame thickness - 2.00 mm

c) Enclosure thickness - 1.6 mm

d) Gland plate thickness – 3.0 mm

13.08.02 Convention type relay based panel shall be vertical free

standing with hinged doors.

13.08.03 a) Contactors

Electro magnetic air break type

b) Utilization Category

AC – II for AC application

DC – II for DC application

c) Fuse – HRC Cartridge with visual operation indicator

(IS 9224).

13.08.04 Terminal Block - 650 V grade

13.08.05 a) Relay shall have good in plant track record.

b) 20% Spare Relay each type and rating wired up to

terminals.

c) All relay contacts shall be hermitically sealed.

13.08.06 PVC FRLS insulated stranded copper wire meeting the

requirement of VDE 0815.

13.08.07 Control & Switching

2 Nos. of 415 Volts ,3ph supply shall be given which shall be stepped down to 220/110 V for controls. Redundant power pack of 24 V DC shall be provided to energize coupling relays in MCC.

13.08.08 Bidder shall provide Annunciation system, all condition

used for trip shall be provided with pre trip

annunciation in control panel.

13.09.00 PLC Based Control System

13.09.01 Each PLC unit shall be provided with two processor(main

processor unit and memories and one for normal operation

and one as hot standby. Incase of failure of working

processor, there shall be an appropriate alarm and

simultaneous the hot standby processor shall take over

the complete plant operation automatically.

13.09.02 Memory – Programme memory shall be in Non Volatile memory.

13.09.03 PLC shall be time synchronized with DDCMIS/ Master

clock.

13.09.04 A hand held/pc programmer shall be provided for programming

of PLC.

13.09.05 Input/ Output Modules -

a) Input/Output Modules as required in the control system

for all type of field input (4-20 mA, RTD, T/C Digital

contacts etc.) and output from the control system are

to be provided as per requirement.

b) Electrical isolation for 1.5 KV with optical coupler

between the plant input/output and surge protection as per

IEEE 472. c) The hardware design shall be such that it is able to

withstand power line disturbance. The system shall conform

to ANSI/IEEE C 62.4 (Immunity to power supply line disturbance).

d) Bidder shall provide at least 25% spare capacity

available on input, output and CPU, memory modules,

power supply module over and above the system

requirement.

13.09.06 Bidder shall provide built in diagnostic for easy fault

detection.

13.09.07 System shall able to operate in non air conditioned

area.

13.09.08 Bidder may provide Annunciation System as integral

part of PLC. Field contacts shall be acquired through PLC

only. The Annunciation sequence logic shall be implemented

as a part of PLC controllers.

The No.of Annunciation facia windows and provision of

original input will be on as required basis. However,

minimum No.of facia window, signal input to input to

Annunciation System shall be 50 Nos.

13.09.09 Power Supply for PLC System

(a)For PLC, redundant 24 V DC power supply system shall be

provided by bidder. Necessary redundant capacity

charger(2×125% load) 24 V DC, one set of PLANTE Lead

Acid Batteries, shall be provided by bidder. Capacity

of charger shall be sized to meet 100% load requirement

plus recharge the fully discharge battery within 8

(Eight)hours. The batteries shall able to provide back-

up for 1 (one) hours at full load requirement of

complete system.

(b)Bidder shall provide 2×125/capacity redundant power

supply module/ card required for PLC cabinet.

13.09.10(a)Contractor shall provide current Transducer for HT or important motors current measurement(4-20 mA)

(b)Bidder shall provide 32 Nos. of potential free

binary and eight No. of 4-20 mA Analog signals from each

plant auxiliary system for monitoring of important

parameter to DDCMIS. Bidder shall provide necessary

interface hardware for inter connection of each plant.

However exact No. shall be decided during detail Engg.

13.09.11 Grounding

Bidder shall provide electronic grounding for PLC which

shall be separate from Electrical grounding as per IS or IEEE Standard.

13.10.00 All important tripping in plant auxiliary shall be from

2 out of 3 sensor.

13.11.00 All instrument required for performance guaranty test of

plant Aux. system, shall be in the scope of bidder.

13.12.00 Bidder shall provide redundant data bus, communication

processor.

13.13.00 Tests

13.13.01 Factory Acceptance Test

(i) P L C

a) Hardware & Software as per BOM

b) Spare capacity in cabinet for new module

c) Current & Power Consumption

d) Power Failure Test

e) Healthiness of Hardware/all module

f) On line removal of I/O card

g) Accuracy Test

h) Diagnostic Test

i) Functional Test

j) Verification of Software

k) Redundancy Test of Controller

l) Redundancy Test of power supply

m) CPU loading duty cycle

n) Power failure auto restart

Any other Test as per QAP

(ii) Safety Instrumentated Systems (SIS)

The factory acceptance test for SIS shall be conform to

IEC-61511 – 1 – Clause No.13.

13.13.02 TYPE TEST

Contractor shall submit following Type Test report for

review.

(i) Surge with stand capability (SWC)

(ii) Dry Heat Test (IEC-68.2.2)

(iii)Dump Heat Test(IEC-68.2.3)

(iv) Vibration Test(IEC-68.2.8)

(v) EMC Test (IEC-61000.4.2)

13.13.03 Bidder shall submit following documentation along with

factory test for review.

(a) Internal test report along with heat run test

(Temperature elevated test – 48 Hrs. at 50 Deg.C)

(b) Calibration certificate of measuring instruments.

13.13.04 Installation, Commissioning, verification, Prestartup test

at site for Safety instrumented system shall be as per

ISA 84.01.

14.Type Test October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:16 am
Tags: type test

14.00.00 TYPE TESTING

14.01.00 The contractor shall furnish the type test reports for

all type tests as per relevant standards and codes as

well as other specific tests indicated in this

specification.

14.01.01(a) Submission of type test results and certificate shall be acceptable provided.

i) The same has been carried out by the bidder/sub-vendor

or exactly the same model/rating of equipment.

ii) There has been no change in the components from the

offered equipment & tested & tested equipment.

iii) The test has been carried out as per the latest

standards along with amendments as on the data of bid

opening.

(b) In case of approved equipment is different from the one

on which the type test had been conducted earlier or any

of the above grounds, then the tests have to be repeated

and the cost of such tests shall be born by the

bidder/sub-vendor within the quoted price and no extra

cost will be payable by the employer on this account.

Laboratory only.

(d) Contractor shall submit Type test report as per (a)

Mentioned above or conduct test as per (b) & submit report

For review and approval.

14.01.02 Special Requirement for Solid State Equipments/Systems

The contractor shall submit Type test reports for each

Of the major C&I systems like SG C&I System, TG C&I system,

Station C&I System, Flame Monitoring System, coal feeders

control and instrumentation system, boiler flame analyzing

system, coal bunker level monitoring system, Electronic

remote drum level monitoring system, conductivity type

level switching system,Turbine supervisory system,analyzer

instruments, vibration monitoring systems, Public address

system, PLC for Auxiliary equipment, EPABX etc. shall be as

indicated below :-

i) Surge Protections for Solid State Equipments/ Systems

All solid state systems/ equipments shall be able to

withstand the electrical noise and surges as encountered

in actual service conditions and inherent in a power

plant. All the solid state systems/ equipments shall be

provided with all required protections that needs the

surge withstand capability as defined in ANSI 37.90

a/IEEE-472. Hence, all front end cards which receive

external signals like Analog input & output modules,

binary input & output modules etc. including power

supply, data highway, data links shall be provided with

protections that meet the surge withstand capability as

defined in ANSI 37.90a/ IEEE-472. Complete details of

the features incorporated in electronics systems to meet

this requirement, the relevant tests carried out the

test certificates etc.shall be submitted along with the

proposal. As an alternative to above, suitable class of

IEC-255-4 which is equivalent to ANSI 37.90a/IEEE-472

may also be adopted for SWC test.

ii) Dry Heat Test as per IEC-68-2-2.

iii) Damp Heat Test as per IEC-68-3.

iv) Vibration Test as per IEC-68-2-6.

v) Electrostatic Discharge Tests as per IEC 801-2 or

equivalent.

vi) Radio Frequency Immunity Test as per IEC 801-6 or

equivalent.

vii) Electromagnetic Immunity as per IEC 801-3 or equivalent.

Test listed at item No.v.vi,vii, above are applicable

for front end cards only as defined under item (i) above.

15.ELECTRICAL ACTUATOR October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:13 am
Tags: Electrical actuator

15.00.00 ELECTRICAL ACTUATORS

15.01.00 Type

The electrical actuators shall be non integral type.

15.02.00 Rating

a) Supply Voltage & frequency – 415 V +/- 10%, 3 phase, 3

wire 50 Hz +/- 5%.

b) Sizing – For OPEN/CLOSE at rated speed against designed

Diff.pressure at 90% of rated voltage.

c) For isolating services – 60 starts/ Hr.

d) For Modulating Services – 1200 Starts/ Hr.

15.03.00 Construction

a) Enclosure – Totally enclosed weatherproof Min.IP-67 Deg.

of protection.

b) Gear Train- Metal (Fiber gears are not acceptable)self

locking to prevent drift under torque

switch(where ever applicable)spring pressure

when motor is de-energized.

c) Manual Wheel- Shall disengage automatically during motor

operation.

15.04.00 Motor

a) Type - Squirrel cage induction motor, direct on line

starting with starting current limited to six times the

rated current as per IS 325.

b) Enclosure – Totally enclosed, self ventilated IP-67 Deg.

of protection.

For Minus Level – IP-68

c) Insulation

All Motor of Electrical Actuator shall be `F’ Class

Insulation. Temp. rise upto `B’ Class.

d) Bearings

Double shielded, grease lubricated antifriction.

e) Earth Terminals – Two

f) Protection

i) single phasing protection

ii) Over heating protection through thermostat- 3 No.

(One in each winding)

iii) Wrong phase sequence protection

15.05.00 Position/ Torque Switches

i) Limit Switches - 4 Nos.(2 NO + 2NC)

ii) Torque Switches - 2 Nos.(2 NO + 2NC)

iii) Rating of Switches - 5 A,240 V AC or 0.5 A, 220 VDC

15.06.00 Local Operation

It shall be possible to operate actuator locally.

Lockable local/ remote selection shall be provided on

actuator.

15.07.00 Position Indicator - To be provided.

15.08.00 Position Transmitter(For Modulating/Inching Type)

As required. Suitable for stabilized 4-20 mA signal, 2

wire inductive type, 24 volts DC operated.

15.09.00 Wiring

Suitable voltage grade copper wire.

15.10.00 Terminal Box

i) Pin plug and socket type.

ii) Necessary glands for power cables shall be provided.

15.11.00 Colour shade of Actuator – BLUE(RAL 5012)

15.12.00 Admissible Ambient Temp. – 0-80 Deg.C

15.13.00 Bidder shall provide lockable emergency PB near

Electrical Actuator and stop PB shall be wired directly to MCC.

Comments (1)

16.EPABX October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:09 am
Tags: Specification of EPABX

16.00.00 Bidder shall provide one EPABX, System shall be installed

at Thermal Power Plant area. Bidder shall provide all

system/ equipment described in this specification.

16.01.00 (a) Expandability – The EPABX System shall be equipped with

500 Extn. lines. The system shall be expandable up to 1000

lines in the future. The bidder shall state the maximum

expandability (No.of ports) in the proposed system.

(b) The EPABX shall be equipped with empty slot to add more module to increase capacity to another 500 lines. Bidder shall provide fully wired exchange for 1000 lines up to MDF.

of Telecommunications. A copy of the `DOT’ approval

letter shall have to be enclosed along with the bid. The

exchange shall have facility to connect P&T

(D.O.T/Trunk) lines. The exchange shall also have

facility for interconnection/ tie-up with other

telephone exchanges.

(d) The bidder shall submit TEC approval certificate for

quoted model of EPABX System along with offer.

(e) The EPABX System shall be based on minimum 32 bit,

Redundant hot standby Microprocessor & power supply.

16.02.00 Tie Lines

a) Bidder shall connect 32 trunk line with Existing exchange.

b) Bidder shall provide provision to connect 24 trunk line

with P & T/ BSNL Exchange.

c) Bidder shall provide provision to connect 16 Nos. trunk line

with GSM.

d) Bidder shall connect 8 Nos. trunk line with PLCC Exchange.

e) Bidder shall connect 2 nos. Tie lines with P A System.

Bidder shall provide all hardware/software/cable etc. for

above Tie lines along with Exchange.

16.03.00 Environmental Condition

a) The system shall be capable of working in a suitable

ventilated non air conditioned environment. The bidder

shall confirm in their offer that equipments offered

shall not required air conditioning and shall work

satisfactorily in normal ventilated room.

b) The environment conditions limit :-

(i) Temperature - 0 to 50 Deg.C

(ii) Humidity - 0 to 95%

16.04.00 The EPABX System must be based on latest digital

technology using pulse code modulation / time

division multiplexing (PCM/TDM).

16.05.00 (i)The EPABX shall be able to handle analogue/ digital

trunk interface as per National/ International standard.

(ii) The EPABX shall support National/ International

standards interfaces for terminals/ PC.

(iii) EPABX shall be able to provide simultaneous voice/ data

transmission conforming to ISDN.

(iv) The EPABX shall have integrated voice mail system 4

ports with 500 hours storage capacity.

(v) The digital telephone set shall be able to connect to

the exchange by two normal wires. Separate power feeding

shall not be used.

(vi) The EPABX shall support direct in dialing. DID/DOD

facility with CLI.

(vii) The EPABX shall have the facilities to connect computer

facsimile, multifunctional telephones & paging system

through suitable interface common to all such devices.

16.06.01 The cabinet design shall provide for adequate

ventilation to dissipate heat due to energy loss.

16.07.00 Features

(I) System Features

(a) Extension to extension dialing: It shall be possible to

establish internal calls automatically by dialing any

No. without assistance of the attendant.

(b) Direct outward dialing: It shall be possible to

establish external calls automatically by dialing any

No. without assistance of the attendant(subject to class

of service).

direct inward dialing and direct inward station access.

(d) Direct outwards Station Access(DOSA): Any Extn. can

access the trunk lines of the system through personal

pass code to make outward calls from outside. All DOSA

calls remain in account of that particular Extn.

(e) Direct Station Selection (DSS): Just pressing a single

key the operator or Extn. can directly call an Extn. or

access the trunk line without hassles of pressing 3

digits.

(f) Multi Level Voice DISA: When ordered as an extra

feature/card, this will enable the systems to provide

auto attendant service to outside callers to directly

access the desired extension by surpassing the the

operator. The caller should be step wise guided by

multi-level voice messages.

(g) Access to Exchange Network: It shall be possible for an

extension to get access to public network with or

without the attendant in such cases. Facility shall

exist for the attendant to either dial the required

No.or to merely extend the junction to the extension and

permit the subscriber to dial the No.

(h) Privacy of call: Full privacy of conversation shall be

available on all calls whether established directly or

by the attendant. A warning tone of a specified

frequency shall be applied when trunk offering facility

is exercised by the attendant on an extension user.

(i) Class of Service: It shall be possible to allow an

extension control over the telephone usage by providing

him suitable class of service.

(j) The coding technique to be used is ALAW/CODEC per

channel.

(k) System should have provision for Automatic Last

No. Redial up to 20 times on Junction Line.

(l) During night, when the board is shut, external lines

should be linked to any pre-defined extensions.

(m) Provision for connecting recorded voice/ answering to

make available extensions to an incoming call without

the help of operator.

(n) Flexible Numbering Scheme: System should have provision

for Flexible Numbering plan up to four digits for

extensions.

(o) EPABX shall ISDN ready and shall provide subscriber ports/

LAN Interface for switched computer data connectivity for

36 Subscriber using V 24/ equivalent Interface Digital

phone.

(p) Universal Port Configuration: All ports of the system

should be identical to facilitate flexible

configuration of the system as per user needs.

(q) Discriminate Ringing: The system should support

discriminate ringing to indicate internal & external

calls.

(r) Multiple Consoles: The system should support multiple

No. of consoles for EPABX Systems.

(s) Mixed Station Dialing: To support al the features

irrespective of type of telephone instruments i.e. DTMF or

DECADIC.

(t) Versatile ASMDR the system should support ASMDR, which is

a call accounting application that can record & print up

to at least 3500 calls without dedicated printer.

(u) Power Failure Transfer: In the case of Power Failure all

P&T/ CO lines become available on the pre-set Extensions.

(v) Programmable Class of service the system should support

programmable class of service for P&T (STD/ISD/Local)

dialing as per need.

(w) Direct call Billing in Rupees: The system should support

direct call billing(near value)through parallel/serial

port printer without computer.

(x) Call billing printout: The system should support

versatile multiple combinations of direct printout options

with total amount viz, Extension wise, Trunk wise. Today’s

call print out, group wise printout, particular date,

particular month, particular time, particular phone etc.

(y) Calling Line Identification (CLIP): The incoming calling

No.is displayed on Key/Analog Phone even if the call is

transferred by the operator, it is compatible to DTMF

(Optional).

(z) Remote Maintenance: The system programming can even be

done from remote locations.

16.08.00 Extension Features

(a) Automatic Call Back: Facility shall exist for an extension

user on encountering a busy signal on a called extension,

to invoke the automatic call back feature by dialing a

code before hanging up. When both the calling and called

parties are free, the call should be automatically put

through on no answer the call may be disconnected after a

specified period. (This facility should be available

throughout the network if more than one EPABX are

interconnected in a Private Network).

(b) Call Forwarding: An extensions with this class of service

shall be able to transfer all incoming calls, temporarily

to another pre-selected extension. Such requests shall be

registered by dialing a code followed by the extension

No. facility shall also exist for cancellation of a

request registered earlier. This facility should be

available throughout the network if more than one EPABX

are inter- connected in a private network.

call (incoming or outgoing) shall be able to hold the call

while making internal call for private consultation. The

external subscriber shall not overhear such consultation.

There must be facility of music during hold condition.

(d) Brokers Call: An extension engaged on an external call

(incoming or outgoing) shall be able to hold the call

while making another call than alternate between the

two. The other party shall not over hear such

consultation. There must be facility of music during

hold condition. This facility should be available

throughout the network if more than one EPABX are inter-

connected in a private network.

(e) Automatic Call Transfer: It shall be possible for an

extension user to transfer incoming calls to another

extension with or without help of the attendant. This

facility should be available throughout the network if

more than one EPABX are interconnected in a private

network.

(f) Executive/Secretary: A combination of call forwarding,

consultation & hold to provide for executive to

selectively ? answer calls. This facility should be

available throughout the network if more than one EPABXs

are interconnected in a private network.

(g) Executive Over Ride: There must be facility offereing

priority to 5 Min. extensions to over ride on going

conversations. This facility should be available

throughout the network if more than one EPABXs are

interconnected in a private network.

(h) Access to Paging: Extensions and attendant shall have dial

access to a loudspeaker or any other type of paging

system where such a system exists.

(i) Conference Call: It shall be possible for an extension

user(up to a maximum number of 6 to talk to each other at

the same time on a conference circuit. One of the

extension user or by the attendant may set up the

conference call. This facility should be available

throughout the network if more than one EPABXs are

interconnected in a private network.

(j) Call Pick-Up: It shall be possible for an extension user

to pick-up incoming calls of 6 to talk to each other at

the same time on a conference circuit. One of the

extension user or by the attendant may set up the

conference call. This facility should be available

throughout the network if more than one EPABXs are

interconnected in a private network.

(k) Call Re-Routing: It shall be possible for a call to be re-

routed, without help of the attendant, to other pre-

defined extensions when certain conditions when certain

conditions apply. This facility should be available

throughout the network if more than one EPABXs are

interconnected in a private network.

(l) Auto call Disconnection: The system should facilitate to

fix the time of call beyond which is will be automatically

disconnected.

(m) Dynamic STD Lock: The system should support that

individual extension can lock outward dialing

(STD/ISD/Local/mobile) by a personal secret pass code to

prevent misuse by others.

(n) Paging on Key Phone: The caller can activate speaker phone

of the called extension to communicate in urgency in own

voice when Extn. is idle.

(o) Call Name & Extension No. on Display(Internal CLI): Name as

well as Extn. No. of the caller is displayed on the key

phone, facilitating to respond accordingly.

(p) Background Music: The key phone user can enjoy the light

background music channeled from system when voice DISA

Card incorporated.

(q) Auto- Answer/ Auto-Off: Key phone can be programmed for

auto answer after pre-set No.of incoming rings. The key

phone is automatically disconnected when caller

disconnects.

16.09.00 Console Features

Stand-alone or P.C.based Attendant Console with the

following features:

(a) The operator console should have soft/feather touch keys

with easy to view display and busy lamp field for

extensions. It will have easy handling facility for all

internal & external calls.

(b) Answering an Incoming Call

(d) Serial Call

(e) Call Waiting Display

(f) Call Selection

(g) Call Hold Facility

(h) Setting Up External Calls

(i) Trunk Offering

(j) Provision for Remote Supervisor Control

(k) Position Busy

(l) Night Service

(m) Head Phone Connectivity

16.10.00 Power Supply

(a) 415 V +/- 10%, 3 phase, 4 wire or 240 V +/- 10% single

phase 50 Hz +/- 5% efficiency grounded power supply feeder

from normal power supply source will be made available by

the owner at the Battery Charger. Contractor shall arrange

for the required power supply and D.C. battery back-up for

the total EPABX System.

(b) The battery and battery charger combination shall be such

as to ensure continuity of DC supply to EPABX System at

all times without even momentary interruption of service.

The battery shall be sized to supply DC power to EPABX

System for at least 10(Ten) hours during AC power supply

failure in the system.

The battery charger shall always be ON supplying DC power to EPABX System & at the same time charging the battery.

Each of the two sets of 2×100% redundant chargers shall be

sized to meet the 120% load requirements of the EPABX

system plus recharge the fully discharged battery within 8

hours.

The chargers shall be self regulating, solid state silicon

controlled, full-wave rectifier type designed for single

and parallel operation with battery and shall have

automatic voltage regulators for a close voltage

stability even when AC supply voltage and DC load

fluctuates, effective current limiting features and

filters on both input and output to minimize harmonics.

The charger output regulation shall be +/- 1% from no

load to full load with an input power supply variation of

+/- 10% in voltage and +/-5% in frequency. The charger

unit shall be auto start facility after any power

interruption.

(d) Batteries

The battery shall be lead acid PLANTE Type positive plates

as per IS-1652 for 10 (Ten) hours back-up for 100% load.

The plate shall be designed for maximum durability during

service conditions including high rate of discharge and

rapid fluctuation of load battery shall be mounted on

wooden rack. Battery sizing calculation shall be as per

IEEE standard.

The Bidder shall supply all types of accessories with each

Battery set for maintenance and safety equipment for

maintenance personal.

16.11.00 The equipment shall be capable of working under the

howling line & junction limits as under:-

i) Extension loop resistance of 1200 ohms for system.

ii) Junction loop up to 1800 ohms.

iii)Insulation lower limit 20 K ohms.

16.12.00 Tone and Ringing - The system shall provide standard

tones and ringing current as in the public telephone

network. The equipment and circuits for tones and ringing

shall be form part of main EPABX equipments.

16.13.00 There shall be protection of EPABX system from high

voltage, current transient, lightening occurring on

junction lines to the exchange.

16.14.00 All Junction Boxes shall be made of Aluminium (LM 6)with

minimum thickness 3 mm with enclosure class IP-65.

16.15.00 Bill Of Material for EPABX Telephone Sets

a) Desk top Push Button operated - 250 Nos.

decadic type with tone dialing

(ordinary) telephone set.

b) Telephone sets with CLI - 250 Nos.

c) Wall Mounted Telephone set - 25 Nos.

16.16.00 Telephone Cable & Cabling

Telephone cables of both PVC type & Jelly filled type

shall be used as per the application.

a) PVC Type

i) The cables shall be 0.6 mm. dia annealed tinned

electrolytic copper conductor, PVC insulated, colour coded

and twisted into pairs, laid up taped, PVC inner sheathed,

galvanized round steel wire/strip armoured and overall PVC

sheathed etc. conforming to ITD specification No.S/WS-113

and IS-1554 both as amended and revised up to date.

ii) Unarmoured version of the cable specified above shall also

be used in areas as detailed in enclosed drawings.

iii) The cable sizes shall be standardised in terms of the

No.of pairs which shall be 101 pairs, 51 pairs, 21 pairs,

11 pairs and 6 pairs only.

b) Jelly Filled Type

i) The cables shall be 0.63 and 0.9 mm.dia annealed high

conductivity electrolytic copper, polythene insulated,

colour coded, twisted into pairs, laid up, jelly filled,

polythene sheathed, galvanized steel tape armoured,

overall polythene sheathed etc. conforming to ITD

specification No.S/WT-129 as amended and revised upto

date.

ii) The cable sizes shall be standardised in terms of the

No.of pairs which shall be 100 pairs, 50 pairs, 20 pairs,

10 pairs and 5 pairs only.

c) Power Cables

Interconnecting power cables between battery charger,

battery and the telephone exchange shall be heavy duty

1100 volts grade multicore stranded aluminium conductor,

PVC insulated, FRLS, extrucded PVC inner sheathed,

galvanized round steel wire/strip armored and extruded

PVC overall sheathed conforming to IS:1554 as revised and

amended upto date.

d) Conduits

i) Conduits shall be rigid steel, coated type; minimum size

of conduits shall be limited to 20 mm.

ii)Steel conduits with interior coating of silicon epoxy

ester for ease of wire pulling shall be seamed by welding

and flo coat metal conduit/ hot-dip galvanized. Steel

conduits shall be suitable for installation in humid

condition. These shall be supplied in standard length of

5 M with Min.wall thickness as specified in IS:9537 Part-II.

e) Cabling

i) Distribution of telephone system shall be done by cables

generally laid on Owner’s/ bidder ladder type cable trays.

ii) In the buildings and areas where owner’s/bidder ladder

type cable trays will be made available by owner, 15

Mtrs. of telephone cables, however, shall be run through

conduits from the nearest available owner’s cable trays

to individual telephone sets and group of telephone

sets, junction boxes, sub-distribution frames etc.

depending on the location of telephone sets for

termination & connection.

iii) In the case telephone cables for entering a particular

area / building, where owner’s cable trays are not

available, the cables shall be laid directly buried

underground for that part.

iv) For telephone cables laid directly buried underground, the

telephone cables shall be laid by excavating trench in

normal soil up to a depth of 1 m unless otherwise shown on

drawings, providing 75 mm of sand or riddle earth both

above and below cable, providing precast concrete slab on

top and bricks on sides for cable protection against

damage and back filling. The precast concrete slabs on

top as specified above shall be marked ” MPPGCL Telephone

Cable”.

v) The Contractor shall perform all excavation and back

filling as required for buried cable and ground

connections.

vi) For addition and deletion of supply, laying of cable

bidder may quote unit prices separately.

16.17.00 Grounding

All metal enclosures, conduits, junction/pull boxes/

Cabinets shall be grounded in compliance with I.E./

Indian Standard.

16.18.00 BILL OF MATERIAL

a. CABLE (As per requirement)-Jelly filled cable.

b. Drop Wires – As per requirement.

c. Junction Boxes as per requirement.

16.19.00 Service Objectives

(a) Under overload conditions, the lost call figures

applicable shall be one in 200 for extensions to

extensions call and one call in 100 for junction calls,

overload being defined as 10% increase in occupancy of

speech network and simultaneous 25% increase in the No.of

calls.

(b) The selection time under full load is defined as the time

interval between the instant at which the required

information for selection of the outlet has been received

at the inlet and the instant at which outlet is ceased

shall not exceed in 99% of the cases under traffic

overload 1.5 seconds.

& junction on fully non-blocking basis.

(d) The system shall have inherent capability to monitor its

own performance and to detect, analyze & locate faults.

(e) The system should have remote maintenance facility.

16.20.00 Testing

a) Acceptance Tests(EPABX)

i) Verification of all features/functional performance of the

machine.

ii) High voltage test (Flash Test at 1000 V)

iii) measurement of loop resistance

b) Cable

(i) Testing of Jelly filled cable shall be as per ITD spec

only.

(ii) Testing of FRLS cable shall be as per Indian standard/

ASTMD/IEC/VDE standards.

c) Type Test(EPABX)

Bidder shall submit following type test report for owner’s

approval as per IS-9000 or equivalent IEC standard

along with final acceptance test report.

i) Cold Test

ii) Dry Test

iii) Dump Test

d) Bidder shall submit Type Test Report of Battery Charger as

per IEC-146.

e) Bidder shall submit Type Test Report of Battery as per

IS-1652.

f) Bidder shall submit Type Test Report of Junction Boxes as

per IS-2147 (Degree of Protection Test).

The above all Type tests shall be carried out at National/

International laboratories.

16.21.00 Mandatory Spares

(a) Controller card, Communication card, power supply module –

One No. each type.

(b) Extn. card - 10% of total quantity.

(d) SCR - 10 Nos. for charger

(e) Telephone Set -

(i) Desk Top(Ordinary Type) – 30 Nos.

(ii) Telephone set with clip – 20 Nos.

(f) 20% Acid for Battery in container.

16.22.00 Colour Shade

(a) Panels (Charger, EPABX etc.)

External – RAL 7032

Internal – Brilliant White

(b) Colour of Junction Boxes

External – Apple Green

6.23.00 Calibration & Maintenance Equipment

(a) Digital Multimeters - 4

(b) Telephone cable fault - 1

(d) Digital Insulator Tester- 1

(e) Telephone Line Tester - 1

(f) Dual Beam Digital Storage-1

Oscilloscope

(g) Stand Tool Box (with - 2

Multipurpose tool box,

Screw drivers, spanners,

Allen key, nose plier, files

Etc.)

Comments (2)

17.Control Philosophy October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 7:03 am
Tags: control philosophy, instrumentation

17.00.00 CONTROL PHILOSOPHY

The control philosophy for different type of drives such as Bi-directional, unidirectional, solenoid operated, H.T .drives under C&I package are detailed below :-

17.01.00 BI-DIRECTIONAL DRIVES ( INCHING OR OTHERWISE )

(a) All bi-directional drives shall be operable from remote i.e. from Central Control Room ( CCR ). Local operation of these drives is not envisaged.

(b) Remote manual operation of all drives shall be done from Visual Display Unit / Monitor (VDU). Additionally back up remote operation through PB station mounted on Unit Control Panel (UCP) for some of the essential dives is provided.

(c) Remote control commands i.e. Open / close, generated from DCS shall be issued to MCC through interposing relays located in respective MCC.

(d) Necessary electrical protections shall be realized at MCC, whereas process interlocks and protections shall be realized in DCS.

(e) Following signal exchange shall take place between MCC & DCS.

- Valve open & close command

- MCC disturbance (when overload relay operates or MCC control power supply fails or MCC power supply is isolated ) for VDU alarm only.

(f) Following signal exchange shall take place from valve actuator to DCS.

- Valve status feed back by means of end position contact

( Open/Close )

- Torque switch contacts ( Open / close )

- Valve Position feed back ( 4-20 mA ) for inching duty drives.

- Actuator Thermostat contact is wired directly to the MCC control circuit.

(g) Emergency stop of the drive has been envisaged from the local push button

provided near the drive.. Under locked position the drive operation is inhibited

from remote. The local emergency stop pushbutton shall be wired directly to MCC.

17.02.00 UNIDIRECTIONAL LT DRIVES

a) Unidirectional LT drives shall be operable only from Remote i.e.

from CCR. Local operation of these drives is not envisaged except

for LP dosing and Phosphate dosing system.

b) Unidirectional LT drives shall be operable only from Remote i.e. from CCR. Local operation of these drives is not envisaged except for LP dosing and Phosphate dosing system.

c) Remote/ Manual operation of all drives shall be done from VDU. Backup remote operation from PB station mounted on UCP is provided for some essential drives.

d) Remote control commands i.e. start/stop, shall be generated from DCS and shall be issued to MCC through interposing relays located in respective MCC.

e) Emergency stop of the drive has been envisaged from the local push button provided near the drive.. Under locked position the drive operation is inhibited from remote. The local emergency stop pushbutton shall be wired directly to MCC.

f) Necessary electrical protections for the drive shall be realized at MCC, whereas process interlocks and protections are realized in DCS.

g) Following signal exchange shall take place between MCC and DCS.

- Drive start & Stop commands

- Drive status feedback’s

- MCC disturbance (when thermal overload relay operates, control power supply fails, Emergency local stop PB is pressed or MCC power supply is isolated ) for VDU alarm only.

h) Suitable current transformer and transducer with two 4-20mA outputs shall be provided in MCC wherever drive rating is above 30KW and for a few essential drives below 30KW for remote monitoring in DCS and UCP. Auxiliary power supply to these transducers shall be from the control supply of the respective switchgears.

17.03.00 SOLENOID OPERATED DRIVES

a) Solenoid operated drives shall be operated from remote from CCR. Local operation of these drives is not envisaged.

b) Remote manual operation of all drives shall be done from VDU. However, backup remote operation from push button station mounted on UCP is provided for some essential drives.

c) Remote control commands i.e. Open / Close, shall be generated from DCS and shall be issued to the solenoid through interposing relays located in the relay panel for the 240V AC / 24V DC operated solenoid drives.

d) Necessary process interlocks shall be realized in DCS.

e) The following signal exchange shall take place between solenoid operated drive and DCS for solenoids operating on 240V AC / 24V DC

- Valve open/close command from DCS through interposing relay mounted in relay panel

- Status feedback from the drive by means of limit switches.

17.04.00 H.T.DRIVES

a) HT drives shall be operable only from remote i.e from CCR. However, the switchgear has two modes of operation i.e. Service and Test. Service mode is the normal mode of operation when the drive is operable from remote.

b) The Test position is envisaged to test the switchgear, from switchgear as well as remote, during maintenance / commissioning.

c) Remote manual operation of these drives shall be done from VDU. Backup e operation from UCP is provided for some essential drives.

d) Remote control commands i.e. start/stop, shall be generated from DCS and shall be wired to switchgear through interposing relays housed in respective switchgear.

e) Emergency stop of the drive has been envisaged from the local push button provided near the drive.,. Under locked position the drive operation is inhibited from remote. The local emergency stop pushbutton shall be wired directly to switchgear.

f) Necessary electrical protection for drive shall be realized at switchgear, whereas process interlocks and protections are realized in DCS.

g) Following signal exchange shall take place between switchgear and DCS.

- Drive start & Stop commands

- Drive status feedbacks by means of ON & OFF contacts ( in service/test position of switch gear)

- Switch gear disturbance ( control power supply failure, trip coil supervision failure ).

- switchgear available (Breaker spring charged, Breaker in service position and Switchgear selected in remote)

- Master trip relay operated ( 86 Relay )

- Trip on overload

- Alarm on overload

- Emergency stop PB operated.

h) Current transducers with isolated two 4-20mA outputs shall be provided in the switchgear for monitoring the current in DCS and UCP. Auxiliary power supply to these transducers shall be from the control supply of the respective switchgears.

Comments (1)

18.TESTING (INSTRUMENTATION) October 16, 2008

Filed under: Uncategorized — shivajichoudhury @ 6:58 am
Tags: Instrumentation Testing

18.

18.01.00 FACTORY TESTS

18.01.01 INTERNAL TESTS

The Contractor shall prepare a Quality Assurance Plan (QAP) for carrying out various Internal Tests at the its own facility or Sub Vendors manufacturing facility for different C&I equipment’s being offered in this Project. This QAP will be reviewed by MPPGCL before the same is implemented. MPPGCL will mark the important stages of manufacturing / testing where MPPGCL or its representative will carry out the stage wise inspection of different equipment’s being manufactured. Contractor shall inform the start of all important activities as marked in the QAP MPPGCL at least 15 days in advance for its witnessing the tests. / stage wise Inspection.

18.01.02 FACTORY ACCEPTANCE TESTS

( To be conducted for Both Units)

i. Before shipment, the Contractor shall perform a complete functional test of the C&I system, including all peripherals and accessories at the factory using the final program and simulated inputs or simulated process if available. MPPGCL or its representative shall participate in the simulation and to introduce random upsets as desired. The details of the factory test program shall be provided with the Bid Proposal.

ii. Prior to system simulation test, Contractor shall perform a heat run test on the assembled system. The heat run test shall be carried out as per applicable standards. The duration of the heat run test shall be at least 100 hours. After the heat run test, the assembled system shall experience five days of power‑on operation. In addition to the assembled system’s heat run test, system sub-assemblies identical in design and construction shall undergo test without malfunction or degradation of performance under ambient temperature conditions as specified herein

iii. Subassemblies shall constitute control and display modules, input/output modules, control and indication stations, amplifiers, memory modules, drive units, power units, A/D and D/A modules, etc. In addition, the complete system shall be proven to have successfully undergone complete functional system tests over the ambient temperature, voltage, and frequency ranges specified herein. Contractor shall furnish certified proof to MPPGCL that these tests have been performed on this or a similar system.

iv. Upon satisfactory completion of the system tests, the equipment shall be considered completed and no hardware shall be changed, replaced, substituted, or otherwise altered except upon written agreement with MPPGCL. Under no circumstance may the system hardware be used to supply parts for testing or substitution in other systems in the Contractor’s facilities. The system may be used by the Contractor’s and / or Mppgcl programmers to continue the program debugging and entry during the period between completion of the test and shipment to the site.

v. All tests shall be performed on electrical interfaces to the equipment, i.e., inputs, outputs, power supplies, data communication buses, etc., in accordance with applicable ANSI standards. The electrical test shall demonstrate freedom from grounds and accuracy of the wiring of all cubicle-mounted devices. The test shall include point-to-point continuity test and electrical insulation test in accordance with applicable ANSI standards. Contractor shall be responsible for proper protection of instruments and devices that may be damaged by high-voltage tests.

vi. Power Source

Power inputs to the equipment shall be tested to demonstrate that the equipment can operate throughout the range of the specified power source voltages for the indicated periods within all of their specifications.

vii. Communications

The communications tests shall demonstrate proper operation of all aspects of the equipment’s communication capability, including modems, security checking, and message protocols. The data modems or signaling equipment shall be exercised to verify that they operate correctly and reliably on the type of channel for which they are designed. The tests shall by conducted under conditions that duplicate as closely as possible the specification for the channel.

The communications tests shall exercise all message protocols and formats to which the equipment is designed to respond. The tests shall also demonstrate that any error detection or correction capabilities function properly, and that the equipment does not respond to erroneous commands.

viii) The Contractor shall perform a full functional test of the system to ensure the correctness of the wiring and the proper functioning of all apparatus. Any as‑built drawing changes required to correct functional or wiring errors shall be immediately incorporated in the system drawings and issued to the MPPGCL

ix) MPPGCL reserves the right to refuse shipment of the system until a satisfactory system test has been demonstrated.

18.02.0 SITE TESTS

( To be conducted for Both Units)

18.02.01 CALIBRATION

The Contractor shall set-up a Calibration laboratory with all latest Test Equipment’s. All Test Instruments used in the Contractors Calibration lab shall have valid Calibration Certificate issued by recognized National / International Calibration Laboratory and should be traceable to International calibration standard. These calibration certificates will be checked by MPPGCL before giving approval for starting any calibration activity by Contractor at Site.

The calibration of all instruments shall be checked by the Contractor and calibration records shall be submitted for review by MPPGCL. If the instruments require re calibration, Contractor shall recalibrate the instruments and revise the calibration records and submit to MPPGCL.

18.02.02 Installation, Commissioning and Pre-start-up Acceptance Test

(a) Installation

All equipment shall be installed as per Design.

(b) Commissioning

The Commissioning activities shall include but may not be limited to

confirmation that the following are installed as per the detailed design

documents and performing as specified in specification.

· Equipment and wiring are properly installed.

· Energy sources are operational.

· All instruments have been calibrated.

· Field devices are operational.

· DCS, Logic solver, input/output are operational.

Tests on devices (in addition to calibration) shall include but not be limited to the following:

i. All safety interlock & protection and Process connected switches/ instruments etc shall be checked for correct functioning , shall be verified and demonstrated to be as indicated on the instrument data sheet. and design documents/diagrams

ii. Controllers and control stations shall be checked for correct functioning of set point adjustment, and manual controls as applicable.

iii. Printers, keyboards and display stations shall be functionally tested and exercised using the manufacturer’s standard test routines and procedures.

iv. Pushbuttons and control switches, if furnished, shall be checked for correct functioning of operating mechanisms.

v. Annunciator function shall be checked for correct functioning in accordance with the requirements of this Specification.

The Contractor shall verify that the configuration of each loop is as indicated on the applicable loop diagram.

Pneumatic loops shall be checked for correctness of supply, input signal and output signal air tubing hookups.

Where possible, tests on devices shall be coordinated with tests on loops. (e.g. switch action with annunciator or control system response; set point or manual control operation with valve stroking etc.)

After commissioning of field Instruments, testing by simulation method from local field Instruments to DCS /PLC shall be carried out to check the proper functioning of Field Instruments, Field & Control Room wiring, Control System, Interlock & protection, Alarms etc. as per the design intent.

vi. Wherever possible subsystems and systems shall be functionally

tested using simulated inputs and with all display, printing and

recording devices, keyboards, alarm annunciator and final control

elements operating prior to tests in conjunction with associated

mechanical equipment.

vii. Full functional and performance tests shall be carried out in accordance with the Contractor’s proposed documents as reviewed by Owner.

viii. Fine tuning of the response of control systems shall be carried out by initiating changes and minor upsets to mechanical equipment and processes and recording the response of the control system in bringing the equipment or process to the new operating point or back to the original operating point as applicable. Adjustments to the control characteristics and repeated tests shall be made until optimum control is achieved.

ix. A PSAT shall be satisfactorily completed prior to the introduction of

hazards the Safety Instrumentation System and other instrumentation

in design to prevent or mitigate or before starting of any equipment or

process.

(d) Accuracy of calibration of test instruments used in PSAT shall consistent with the application.

(e) Test Results

Contractor shall submit test report. As a minimum the test report shall include following :-

· Identification of instrument that has been tested.

· Confirmation that Commissioning is complete.

· Date the PSAT was performed.

· Reference to the procedure used in the PSAT.

· Authorized signature that indicates PSAT has been satisfactorily completed.

(f) COMMISSIONING TEST

The Contractor shall perform commissioning tests for all instrumentation and control devices, loops, sub-systems and systems furnish by him. Commissioning tests for instrumentation and controls shall include but not be limited to:

i. Test on devices and loops

ii. Functional tests on subsystems and systems

iii. Performance tests on systems to demonstrate that it meets the guarantees as proposed by the Contractor

iv. Fine tuning of control systems

The satisfactory operation of the equipment / Instrument during continuous operation of 72 Hours at full capacity shall be established during this test.

18.02.03 AVAILABILITY TEST

This test shall be conducted only after TG, SG and Station DCS and other Control system are commissioned and integrated with Plant Balance of Plant Systems.

The Contractor shall guarantee 99.7 percent system availability for a continuous period of 180 days. An availability guarantee test shall be conducted to assure this level of availability. If the accrued downtime exceeds 0.3 percent of 180 days, during availability test run, a new 180 days test run shall be start at the time when the system becomes available again. Loss of availability (unavailable system) shall be defined as the loss of systems guaranteed accuracy and repeatability or of any system function, except however , that the loss of a function for not more than five percent of the points shall be treated as partial unavailability and the corresponding outage time shall be weighted with respect to the function and the percentage of the points for which the function is unavailable. Loss of each function shall have one weighing factor and unavailability of each equipment , peripheral device or process I/O card etc shall have another weighing factor. The guaranteed accuracy and repeatability and system parametric requirements shall be maintained for the entire 180 days run without any manual re calibration or any other changes made to the DCS.

Downtime shall start upon loss of a system function and shall end upon full restoration of the affected system function. A minimum of one hour downtime shall be charged for each loss of availability in determining system availability.

The Bidder shall submit the Availability Test procedure for MPPGCL approval. The details regarding outage time, weighing factors for various system functions equipment’s to calculate the downtime , test duration etc shall be discussed and finalized during detail engineering.

18.02.04 Performance requirement of the Closed loop

Control System

i. The closed loop control system shall permit the performance of the following dynamic load tests while maintaining safe furnace conditions, major process parameters and without endangering other equipment. All tests shall be performed with the system in automatic mode:

a) Drop 50 percent of the maximum load capability from approximately full load at a rate of 10 percent per minutes.

b) Drop load from full rated output to the lowest runback limit, at a rate corresponding to the fastest run back rate.

c) Pick up 50 percent of the maximum load capability from approximately 50 percent load at the rate of 10 percent per minute.

During transient conditions causing deviation of process variables, the control system furnished under the specification shall not permit deviations which exceed those permitted by the manufacturers of the controlled process equipment, for load changes as indicated above. The control loops shall perform to return the controlled variable to the set point in a stable manner without cycling in the shortest possible time and without any loop interactions or cycling of generation when generation matches unit load demand.

ii. The Contractor shall also guarantee that the Control System provided by him will be responsive and stable and will maintain the deviation of controlled variables from set point within the limits specified so that the equipment being controlled will operate as specified over the range required. The controls shall operate automatically, with no assistance from the operator. The contractor shall successfully demonstrate the performance of closed loop Control systems before accepting and taking over this system by MPPGCL.

18.02.05 Parametric Tests

(1) The parametric test shall also be conducted under worst case loading conditions (which is basically equivalent to a trip condition – details of which shall be as approved by MPPGCL during detailed engineering)

i. For Control System

- CPU loading, Cycle time / controller reaction time and spare

memory capacity.

ii. For MMIPIS

- CPU loading , spare duty cycle, spare memory capacity.

iii. Spare duty cycle for system bus.

iv. Various display response time

v. CRT update time

For the parametric test, the following requirements shall be met:

18.02.05 (a) Processor Spare Duty Cycle ( Free Time)

· Under worst case loading of MMIPIS and system bus each MMIPIS processor shall have 40% free time when measured over any two second period and 50% free time when measured over any one minute period.

· Under worst case loading conditions of control system, control system processor shall have 20% free time when measured over any one minute period.

18.02.05 (b) System Bus Spare Duty Cycle (Free Time)

· The Contractor shall furnish all necessary data to fully satisfy the Purchaser that the processor spare duty cycle figures quoted by the Contractor are realistic and based on configuration and computation capability of the offered system and these shall be actually achieved in the fully implemented system as commissioned at project site.

The system bus shall have minimum 50% free time during the worst case loading conditions of control systems MMIPIS and the system Bus, measured over any 2 seconds interval.

18.02.06 Display Response Time

The system shall acknowledge all operator requests in one of the following manner within one second of pressing of the last button:

Commencement of the requested display

Acknowledgement of operator request in a suitable manner

The display response time as defined above, under the worst case loading conditions shall not be worse than the following:

All control related displays	1 Sec
Point Details Display (single point)	1-2 Sec
Bar chart display ( 20 points, current data	2-3 Sec.
Operator guide / plant start-up guide message Display ( full screen of alphanumeric information And a maximum of ten numbers of dynamic Data items)	1-2 Sec.
Plant mimic display of fair complexity With a minimum of 120 numbers of Dynamic data items e.g. values, macros, Line segment etc.	2-3 Secs
Group review display ( current value of twenty points)	2-3 secs
X-Y plot display ( 2 X-Y plots and A single display requiring both Historical as well as current data)	3-4 Secs
X-T plot display ( Trend of 6 analog Points and a single display requiring Both historical as well as current data	3-4 Secs
Plant Summary display ( e.g. bad point Summary , limit check removed Point summary. Assume the whole data Base search is required and the summary Display contains ten points only)	3-4 Secs

The response time for screen update after the execution of the control command from the time the command is issued ( for example command to start a motor to the time the screen is updated) shall be two seconds ( excluding the drive actuation time).

18.02.07 System Accuracy Requirements

The overall system accuracy from signal input terminals to output presentation on CRT display and printers for the least accurate input range and maximum scan rate shall be not worst than ± 0.1% of full scale of the engineering process range. For this purpose, the number of decimal places on CRT display for testing purpose shall be sufficient to cover 0.01% of full scale range.

18.02.08 CRT Updated Rates

All CRT displays shall be updated at least every two seconds.

¨ The spare capacities of working and bulk memory shall meet the

requirements as per the specifications.

The operating capabilities of the plant as listed elsewhere in this

specification shall also be demonstrated along with other

parameters / capabilities specified under guarantees.

18.02.09 Acceptance test for Steam Turbine speed control system shall be as per

IEC61064.

18.04.00 Handover test

Before completion of warranty period , the Contractor shall demonstrate to MPPGCL that all measurement & control systems in his scope are healthy and systems are functioning as per design intent in all modes of operation.

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SPEC INSTRUMENTATION

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9.MAINTENANCE AND CALIBRATION EQUIPMENTS October 16, 2008

10.CONTROL AND INSTRUMENTATION CABLE October 16, 2008

11.PROCESS CONNECTION , PIPING AND INSTALATION REQUIREMETS October 16, 2008

12.PUBLIC ADDRESS SYSTEM October 16, 2008

13.CONTROL & INSTRUMENTATION FOR PLANT AUXILIARY October 16, 2008

14.Type Test October 16, 2008

15.ELECTRICAL ACTUATOR October 16, 2008

16.EPABX October 16, 2008

17.Control Philosophy October 16, 2008

17.00.00 CONTROL PHILOSOPHY

17.01.00 BI-DIRECTIONAL DRIVES ( INCHING OR OTHERWISE )

17.02.00 UNIDIRECTIONAL LT DRIVES

17.03.00 SOLENOID OPERATED DRIVES

17.04.00 H.T.DRIVES

18.TESTING (INSTRUMENTATION) October 16, 2008

18.02.0 SITE TESTS

( To be conducted for Both Units)

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SPEC INSTRUMENTATION

Just another WordPress.com weblog

9.MAINTENANCE AND CALIBRATION EQUIPMENTS October 16, 2008

10.CONTROL AND INSTRUMENTATION CABLE October 16, 2008

11.PROCESS CONNECTION , PIPING AND INSTALATION REQUIREMETS October 16, 2008

12.PUBLIC ADDRESS SYSTEM October 16, 2008

13.CONTROL & INSTRUMENTATION FOR PLANT AUXILIARY October 16, 2008

14.Type Test October 16, 2008

15.ELECTRICAL ACTUATOR October 16, 2008

16.EPABX October 16, 2008

17.Control Philosophy October 16, 2008

17.00.00 CONTROL PHILOSOPHY

17.01.00 BI-DIRECTIONAL DRIVES ( INCHING OR OTHERWISE )

17.02.00 UNIDIRECTIONAL LT DRIVES

17.03.00 SOLENOID OPERATED DRIVES

17.04.00 H.T.DRIVES

18.TESTING (INSTRUMENTATION) October 16, 2008

18.02.0 SITE TESTS

( To be conducted for Both Units)

Pages

Archives

Meta

Recent Posts

Tags

Categories

Categories

Categories

Recent Comments

Category Cloud

Spam Blocked

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Authors

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Follow “SPEC INSTRUMENTATION”