Maintenance contract for various C and I Job during Overhauling of Unit 5 at STPS, WBPDCL.

Amount

Power cylinder dismantling & refitting.(Mill CAD, HAD, IDF( IGV, SCOOP), FDF BLADE PICH, PAF BLADE PITCH, BURNER TILT, PRDS AS 10,Mill discharge valve , OUTSIDE area

All mill HAG, CAG Power cylinder dismantling & refitting & seal kit change.

Power cylinder & accessories servicing & seat kit Change.

Power cylinder checking & Calibration.

Servicing and seal kit change of solenoid valves(mill seal air valves, hot and cold air gates, APH air motor etc)

Checking of Limit Switches different Gates, valves, CRH NRV etc. ( LOTV, LORV, LO-23 All air/oil solenoid valves ,BFP Recirculation valve etc)

Impulse line purging of Transmitters & switches from both ends(Mill area, Boiler area, TG area etc)

Dismantling, refitting of different Switches (pressure, level,temp , Air motor , TG area etc).Calibration Checking of different Switches (pressure, level, temperature, air motor Indicators etc)

Dismantling and refitting & Checking of different RTDs , thermocouple (if required)

Disconnecting and reconnecting of RTDs connections of Motor Winding & bearing Temperature(as required)

Disconnecting and reconnecting of different Vibration Sensors at HT drive probe. Calibration of Vibration Sensors probe

Dismantling, refitting of different Gauges (pressure, temp, vacuum, etc).Calibration Checking of different Gauges (pressure, temp, vacuum,TG area etc)

Cleaning & Sealing and Tightening the connections of Junction Box by air or petrol( Boiler area , TG area etc)

APH fire sensing T/C dismounting & connection(if required)

Cleaning & Sealing and Tightening the connections of Gravimetric Coal feeder Group JBs (Junction Box)

Checking & Calibrating the Gravimetric Coal Feeder

Bunker Level transmiter installation & commissioning

Cleaning of Bunker Level Transmitters

Canopy making over various Instruments & JBs (Including material MS Plate & colour)

Thrust bearing JB shifting job from mill gearbox body to side wall.

Dismantling, refitting of Auto drain valves in different areas. Servicing & operation checking of Auto drain valves installed in different areas.

Calibration of Blade Pitch of FD/PA Fans and IGV & Hydro-coupling controller of ID fans.

ID fan board dismantle & refitting

Calibration of dampers(hot & cold air gate of Mill, scanner air damper)

Dismantling and refitting of SADC Assembly,Servicing (replacing Seal kits if required) of SADC Assembly (Power cylinders, I/P, AFR etc.). SADC calibration and operation checking.

All igniter/gun assembly Dismantling and refitting (power cylinders, gun engage limit, igniter advance retract limit, etc.).All igniter Spark box, spark tip , spark rod, Igniter advance, retract & Gun engaged limit switch checking.

Igniter limit switch servicing.Gun engage limit switch servicing

All ignitor/gun assembly power cylinder servicing

All LONV, AANV, SCNV, Igniter Advance/ Retract, LOTV, LORV solenoid valves servicing (if required)

Dry test of all burners(operation checking)

Flame scanners dismantling and refitting. Flame scanners servicing & cleaning. Flame scanners calibration and checking .

All Temperature sensors along with guide pipes for APH I/L and O/L temperatures and flue gas path checking and rotation of 180deg.

Oxygen probes Dismantling, refitting.Oxygen probe assembly checking/Replacement by new component if required, guide pipe checking/changing.Oxygen probes calibration

Dismantling and refitting of ASLD Assembly. Cleaning, purging & checking of ASLD Assembly.

All Local JB in Mill & furnace dust prone area covering with plastics.

Secondary air flow Transmitter line purging by checking holes inside aerofoil ducts

Drum Level Hydrastep (Left ) water column Dismantling and refitting by new one.

Painting of Impulse lines of all Transmitters, Switches and Gauges including all LIR, LIE panels and JBs (marking “P” and “T” at JB) with different color as per industrial norms.

BFP Scoop Power cylinder dismantling ,Refitting & seal kit replacement

BFP Scoop air relay valve repair kit replacement( if required) or valve replacement.

BFP Scoop Calibration, PU Tube Status Checking & replacement (if required)

BFP RPM Indicator & Proximity Sensor Checking.

BFP Recirculation Diaphragm v/v dismounting & refitting as required by TMD

CT FAN vibration switches DISMOUNTING & REMOUNTING

Material Shifting from O & M Store to Site Store.

Hotwell, Deaerator, Dirty oil Tank Switch Level Switch (float type) dismounting, Gasket change(if required) & mounting .

Hot well & Deaerator Level, Dirty oil Tank Switch (float type), Connection checking and calibration.

Seal oil system Level Switch dismounting, checking, Gasket change & mounting and Connection checking and replacement (if any).

CRH DRAIN POT PROBE &PANEL dismounting, checking & mounting and Connection checking and replacement (if any).

CW sump level Tx Connection checking and cleaning

JB inside cable Tightness checking, new ferruling, lagging, &. Termination.

New JB fabrication & erection

New T/B mounting for new & Old JB.

New T/C capillary wire lying.

Root Valve & Isolation valve replacement.

Transmitter dismounting & refitting

Transmitter cleaning, calibration, testing, for Boiler & TG area, , BFP, CEP, ACW,CW, DMCW(T), DMCW(B), COMPRESSOR, outside area

Dismounting, refitting work of Turbovisory System. Linearity checking of turbovisory Sensors.Turbine speed sensor dismantle & refitting

TG bearing all Thermocouple and dismantle, Refitting and checking. Generator winding (SLOT & CORE) all Thermocouple checking. All TSC thermocouple dismantle, refitting & checking

Dismounting and Refitting work of GWR & Magnetostrictive Level transmitter as well as Stand Pipe magnetic level indicator at MOT ROOM. Calibration of GWR Magnetostrictive Level transmitter as well as Stand Pipe magnetic level indicator at MOT ROOM.

HPLP BypassProportional valve ,SACU, Fast Opening Device & BD servo unit & position feedback dismantle work.

Total Cable laying work (UCP related, RTD, Switch,SADC feedback unit installation etc.)

LP Bypass Proportional Valve-8 and SACU Dismounting and Refitting.LP Bypass Proportional Valve-8 and SACU, cleaning, Servicing and checking.LP Bypass Position Feedback Transmitter calibration.HP LP Bypass Hydraulic Supply Unit checking of servo valve,blocking unit , seal kit change etc (cleaning and gauge calibration)

Air Filter Regulator cleaning & Mounting.

Change/Mounting of I/P Converter.

Centrifuge Level Switch Checking and Replacement Work (if required).

RH and SH attemperation related solenoid valve actuator dismantling/refitting.

RH and SH attemperation related solenoid valve actuator servicing and diaphragm change (if required)

RH and SH attemperation related solenoid valve operation checking

RH & SH, feed control, drip control, level control Related control VALVEs, GSC supply, gsc leak off, water injection valve ACTUATORS including all accessories servicing, dismantling & refitting.

FEED CONTROL, DRIP CONTROL, LEVEL CONTROL, GSC SUPPLY, GSC LEAK OFF, WATER INJECTION, and PRDS related valve etc. calibration check.

Pulsejet checking

Replacement work of Pulsejet damaged diaphragm

Checking of Swing disk valve at ASH conveying line & vessel.

Total bagging system checking, seal kit change, operation checking etc.

Copper Tubing / SS tubing (if any)

Gasket Cutting.

Air Hose pipe dismantle/refitting

UPS cleaning.

UPS battery healthiness checking . Battery interconnecting strip, cleaning, greasing by petroleum jelly.

Cleaning of MAX DNA panels at UCR / CW pump house, clarified water pump house, MAX DMA network system & work stations, LVS panel & filter cleaning PLC panels of vacuum p/p house, fly ash control room, dm plant, MRS panels including all work stations.

LSR CHECKING

MW transducer installation and commissioning job

Turbine Governing Rack various component replacement work along with instrument checking and calibration

Network connectivity checking.

All Major interlock protection checking with confirmation of associated alarms for Boiler, Turbine, ID/FD/PA Fans, BFP /CEP/CW/DMCW/TLR/MFT etc( Mostly on simulation basis by forcing values some are possible to be done in actual Like LO Pr. interlocks)

ALL PANEL Power pack ( system & field) & FAN rack need to be checked

UNIT CONTROL PANEL (UCP) cleaning.

Installation & commissioning of Mill Discharge valve Power Cylinder.

UNIT CONTROL PANEL (UCP) checking of instrument, Hard Switch connectivity checking related to DC SOP,DC EOP & DC JOP,Vacuum breaker etc.

Miscelleious Job

MS MAA CONSTRUCTION

TECHNO ENGINEERING

K.B.ENTERPRISE