DAILY ROUND THE CLOCK ROUTINE MAINTENANCE and BREAK DOWN MAINTENANCE OF MAIN BOILER PRESSURE PARTS HP LP VALVES and SAFETY VALVES OF UNIT 7 CTPS HTPS KASIMPUR ALIGARH

Amount

ATTENDING THE LEAKAGES OF WATER WALL TUBES IN BOILER FURNACE FROM DOWN COMER / RING HEADER TO 40 METER INCLUDING BURNER ZONE.

ATTENDING TUBE LEAKAGE UP TO IST TEN H.P. WELD JOINTS. (IRRESPECTIVE OF NUMBER H.P. WELD JOINTS IN ONE FREQUENCY). COMPLETION TIME WILL BE RECKONED AFTER 12 HRS OF BOILER BOXED UP AND INSTALLATION OF SKY CLIMBER.

ATTENDING TUBE LEAKAGES FOR EACH H.P. WELD JOINTS BEYOND 10 NOS. OF H.P. WELD JOINT.

ATTENDING THE LEAKAGES FROM ECONOMIZER / LTSH TUBE.

ATTENDING TUBE LEAKAGE UP TO IST TEN H.P. WELD JOINTS. (IRRESPECTIVE OF NUMBER H.P. WELD JOINTS IN ONE FREQUENCY.

ATTENDING TUBE LEAKAGES FOR EACH H.P. WELD JOINTS BEYOND 10NOS. OF H.P. WELD JOINT.

ATTENDING THE LEAKAGES IN CEILING SUPER HEATER TUBES SITUATED IN FURNACE TOP BEFORE PLATEN SUPER HEATER, PLATEN SUPER HEATER TUBES.

ATTENDING TUBE LEAKAGE UP TO IST TEN H.P. WELD JOINTS. (IRRESPECTIVE OF NUMBER H.P. WELD JOINTS IN ONE FREQUENCY). COMPLETION TIME WILL BE RECKONED AFTER 12 HRS OF BOILER BOXED UP AND INSTALLATION OF SKY CLIMBER.

ATTENDING TUBE LEAKAGES FOR EACH H.P. WELD JOINTS BEYOND 10 NOS. OF H.P. WELD JOINT.

ATTENDING THE LEAKAGES IN COLD REHEAT & HRH TUBES, ARCH TUBES, SCREEN TUBES, WATER WALL HANGER TUBES, SUPER HEATER HANGER TUBES, FINAL SUPER HEATER, EXIT SUPER HEATER TUBES, EXTENDED WATER WALL TUBES, CEILING SUPER HEATER TUBES BEYOND PLATEN SUPER HEATER.

ATTENDING TUBE LEAKAGE UP TO IST TEN H.P. WELD JOINTS (IRRESPECTIVE OF NUMBER H.P. WELD JOINTS IN ONE FREQUENCY). (COMPLETION TIME WILL BE RECKONED AFTER 12 HRS OF BOILER BOXED UP.

ATTENDING TUBE LEAKAGES FOR EACH H.P. WELD JOINTS BEYOND 10 NOS. OF H.P. WELD JOINT.

ATTENDING THE LEAKAGES FROM SCW SUPER HEATER TUBES AND EXTENDED SUPER HEATER TUBES.

ATTENDING TUBE LEAKAGE UP TO IST TEN H.P. WELD JOINTS (IRRESPECTIVE OF NUMBER H.P. WELD JOINTS IN ONE FREQUENCY). COMPLETION TIME WILL BE RECKONED AFTER 12 HRS OF BOILER BOXED UP AND INSTALLATION OF SKY CLIMBER.

ATTENDING TUBE LEAKAGES FOR EACH H.P. WELD JOINTS BEYOND 10 NOS. OF H.P. WELD JOINT.

ATTENDING THE LEAKAGES OF HAND HOLE PLATES OF DIFFERENT PRESSURE PART HEADER BY REMOVING HAND HOLE PLATES WITH HAND HOLE CUTTING EQUIPMENT, REWELDING OF THE SAME AFTER COMPLETE PREPARATIONS AND STRESS RELIEVING OF THE SAME AFTER WELDING IF REQUIRED. RATE SHOULD BE COATED ON AS PER JOINT BASIS.

ATTENDING THE LEAKAGES OF HEADER STUBS UP TO IST TEN STUBS JOINTS IN ONE FREQUENCY OF DIFFERENT PRESSURE PARTS HEADERS OF BOILER. COMPLETION TIME IS GIVEN CONSIDERING PRE-HEATING AND STRESS RELIEVING.

REMOVAL OF DAMAGED CLAMPS / BINDERS /SCALLOP BARS ETC AND REPLACEMENT / REFITTING OF THE SAME WITH NEW / REPAIRED ONE IN DIFFERENT ZONES OF THE PRESSURE PARTS. THE RATES SHOULD BE QUOTED ON AS PER NO. BASIS AS UNDER: -

U’ CLAMPS.

SCALLOP BARS.

BINDERS, SUPPORT BAND, LUGS.

FLEXIBLE CONNECTORS (MALE / FEMALE).

FABRICATION OF HOT BENDS OF VARIOUS DEGREES AND RADIUS OF CURVATURE FROM STRAIGHT PRESSURE PARTS TUBES BY FILLING SAND AND HEATING GAS TO REQUIRED TEMPERATURE OF FOLLOWING MATERIALS: -

CARBON STEEL.

ALLOY STEEL.

STITCH WELDING OF FINS OF WATER / STEAM COOL WALL FOR SECURING OF RESPECTIVE POSITIONS OF TUBES.

RECTIFICATION / REPLACEMENT OF ASH PROTECTOR / SHIELDING / CASSETTE BAFFLES FOUND DAMAGED / ERODED / DISLOCATED OR PROVIDING NEW PROTECTOR IN THE FOLLOWING PRESSURE PART ZONES (RATES SHOULD BE QUOTED ON AS PER NO. BASIS)

TUBULAR (HALF ROUND) PROTECTOR OF PLATEN SUPER HEATER / REHEATER INLET ETC AND THEIR SPACER TUBES. PROTECTOR /SHIELDING SHALL BE RECTIFIED / INSTALLED WITH THE HELP OF SKY CLIMBER IF AVAILABLE.

RECTIFICATION / REPLACEMENT OF BOX TYPE PROTECTOR / CASSETTE BAFFLES FOUND DAMAGED / ERODED / DISLOCATED IN LTSH / ECONOMIZER ETC.

TUBULAR PROTECTORS / SHIELDING OF WATER WALL HANGER TUBES / WATER WALL SCREEN TUBES / FINAL SUPER HEATER / LTSH / ECONOMIZER / REHEATER ETC. PROTECTOR / SHIELDING SHALL BE RECTIFIED / INSTALLED WITH THE HELP OF SCAFFOLDING TO BE ERECTED BY AGENCY AS PER REQUIREMENTS.

RECTIFICATION / REPLACEMENT OF BOX TYPE PROTECTOR / CASSETTE BAFFLES FOUND DAMAGED / ERODED / DISLOCATED OF WATER WALL HANGER TUBES / WATER WALL SCREEN TUBES / FINAL SUPER HEATER / REHEATER ETC. PROTECTOR / SHIELDING SHALL BE RECTIFIED / INSTALLED WITH THE HELP OF SCAFFOLDING TO BE ERECTED BY AGENCY AS PER REQUIREMENTS.

ERECTION OF SCAFFOLDING AND PLATFORM IN THE FOLLOWING AREAS: -

ECONOMIZER HOPPER (ABOVE).

S-PANEL & BOTTOM ASH HOPPER.

REHEATER INLET & OUTLET.

WATER WALL SCREEN TUBE / FINAL SUPER HEATER / SUPER HEATER SCREEN TUBE/LTSH UPPER BANK TO BP UPPER REAR WALL.

BUILD UP OF ERODED PORTION OF THE TUBES CAUSED BY ASH / STEAM EROSION USING SUITABLE WELDING ELECTRODES MATCHING WITH PARENT METAL COMPOSITION. DEPTH OF EROSION UP TO 2.5MM, LENGTH OF EROSION UP TO 250 MM.

LIFTING AND TAKING OUT THE COMPLETE COILS IN PAIR OF LTSH HORIZONTAL COILS (UPPER OR LOWER) AFTER CUTTING CLAMPS SUPPORTS, CLITS, STOPPERS AND RELEASING FROM SUBSEQUENT HEADERS AND COIL & THEIR RESTORATION AFTER PLACEMENT OF COIL.

LIFTING AND TAKING OUT THE COMPLETE COILS OF ECONOMIZER (UPPER OR LOWER) AFTER CUTTING CLAMPS SUPPORTS, CLITS, STOPPERS AND RELEASING FROM SUBSEQUENT HEADERS AND COIL & THEIR RESTORATION AFTER PLACEMENT OF COIL.

REPLACEMENT OF ERODED / DAMAGED TUBES / BENDS OF PRESSURE PARTS IN DIFFERENT ZONES OF BOILER DURING PREVENTIVE MAINTENANCE AS PER PROCEDURE MENTIONED IN ANNEXURE OF THE FOLLOWING: -

CARBON / LOW ALLOY (T-11) JOINT.

HIGH ALLOY (T-22) JOINT.

STAINLESS STEEL JOINT.

CUTTING AND REMOVAL OF SKIN CASING / HIGH CROWN PLATE BY GRINDER AND WELDING THE SAME WITH SUITABLE ELECTRODE BY HIGH PRESSURE WELDING METHOD, AFTER COMPLETION OF REPAIR JOBS OF PRESSURE PARTS IF ANY.

THICKNESS -UP TO 15 MM.

THICKNESS-16MM OR ABOVE.

RECTIFICATION OF BUCK STAY / PUTTING BUCK STAY PIN ON ITS POSITION IN SECOND PASS OF BOILER / CORNER NO-1, 2, 3 & 4.

ROUND THE CLOCK ROUTINE AND PREVENTIVE MAINTENANCE WORK OF BOILER INCLUDING OIL GUN CLEANING, VALVES GLAND TIGHTENING, COAL PIPE LEAKAGE ATTENDING AND OTHER MINOR WELDING WORK ON MAIN BOILER OF UNIT #7 (120 MW) HTPS ALIGARH.

VARIOUS CLEANING WORK ON BOILER OF UNIT NO-7 (120 MW).

CLEANING / WATER WASHING OF BOILER ZERO METER FLOOR EXCEPT BOTTOM ASH, ECONOMIZER HOPPER ETC.

CLEANING OF DIFFERENT FLOORS OF BOILER. (ALL DUCTS, STRUCTURES AND OTHER EXTERNAL SURFACES).

CLEANING OF ALL VALVES AND SKIDS OF FIRING FLOOR.

CLEANING/WATER WASHING OF PENTHOUSE AFTER OPENING MANHOLES.

CLEANING/WATER WASHING OF GOOSE NECK AREA AFTER OPENING MANHOLES.

CLEANING OF BOILER II ND PASS (INTERNAL).

CLEANING OF BOILER S-PANEL (INTERNAL).

CLEANING OF WIND BOX L&R (INTERNAL).

VARIOUS BREAKDOWN MAINTENANCE WORK ON BOILER OF UNIT NO-7 (120 MW).

REPAIRING OF MANHOLES.

REPAIRING OF PEEP HOLES.

SERVICING/REPLACEMENT OF SPRING HANGERS, SUPPORT HANGERS, ANCHORS AND RESETTING OF COLD SETTING VALUES.

REPLACEMENT OF COAL NOZZLE ASSEMBLY (COAL NOZZLE AND ADJACENT COAL NOZZLE TIP/SEAL PLATE) WITH NEW REPAIRED ONE.

REPAIRING /SERVICING OF BURNER TILTING LEVER.

RECTIFICATION OF BUCK STAYS IN FIRST AND SECOND PASS.

ERECTION OF SCAFFOLDING FROM S PANEL (4 METER LEVEL) TO BURNER LEVEL I.E. UP TO 19 METER AND PROVIDING PLATFORM TO FACILITATE INSPECTION / REPAIRING / REPLACEMENT OF COAL BURNER TIPS ETC OF FOUR TIER AT ALL FOUR CORNER (1,2,3&4) OF BOILER FURNACE AND DISMANTLING THE SAME AFTER COMPLETION OF WORK.

CHECKING OF ALL FOUR CORNER COAL BURNER TIPS, OIL BURNER TIPS, AIR NOZZLE TIPS, FLAME SCANNER POSITION.

REPAIRING OF COAL BURNER TIP/OIL BURNER TIP IN INSTALLED CONDITION INSIDE THE BOILER DURING S/D.

REMOVING CHOCKING OF COAL PIPE WHENEVER ANY COAL PIPE FOUND CHOCKED. ONE COAL PIPE OF ANY MILL MAKE ONE JOB.

FIXING OF SKY CLIMBER IN BOILER FURNACE AFTER MAKING PROPER PLATFORM ON BOTTOM ASH HOPPER, ITS OPERATION DURING EXECUTION OF THE WORKS AND DISMANTLING AND REMOVAL OF ASH HOPPER PLATFORM AFTER COMPLETION OF THE JOBS. RATES SHOULD BE QUOTED ON AS PER JOB BASIS.

SHIFTING OF SKY CLIMBER IN BOILER FURNACE AT DIFFERENT LOCATIONS FOR ATTENDING AND INSPECTION OF VARIOUS PRESSURE PARTS ZONES. RATES SHOULD BE QUOTED ON AS PER JOB BASIS.

REPLACEMENT/REPAIRING OF ERODED FLAPS OF VARIOUS FLUE GAS DAMPER MADE OUT OF 3.15MM THICK MS SHEET/ OR PLATE. MS SHEET/ PLATE TO BE PROVIDED BY THE DEPARTMENT FREE OF COST.

FABRICATION OF SEMICIRCULAR BAFFLE OUT OF 6MM OR AVAILABLE PLATES & INSTALLATION OF THE SAME IN THE DUCTS CONNECTION APH OUTLETS TO ESP INLETS.

WELDING OF VARIOUS DUCTS WITH ARC WELDING TO ARREST LEAKAGE OF AIR/GAS.

SERVICING / REPAIRING / REPLACEMENT OF GUN GUIDE ASSEMBLY AT AB AND CD ELEVATION.

SERVICING OF SECONDARY AIR DAMPER IN WIND BOX (L&R).

REPAIRING/SERVICING OF SCANNER GUIDE ASSEMBLY.

REPAIRING / REPLACEMENT OF BRACING OF FLUE GAS DUCT ASSEMBLY.

REPAIRING WORK OF COAL NOZZLE WHEN THE SAME IS LYING OUTSIDE.

REPLACEMENT/SERVICING OF IGNITER GUIDE ASSEMBLY AT AB AND CD ELEVATION.

REPAIRING/FABRICATION OF ADJUSTABLE COAL NOZZLE TIPS BY REPLACING COMPLETE FUEL COMPARTMENT CONSISTING OF SPLITTER PATES WITH NECESSARY HARD FACING AND REPAIRING OF EXTERNAL HOUSING USING STAINLESS STEEL CONFIRMING TO AISI-304.

REPLACEMENT OF PIPE OF DIAMETER 10MM TO 40MM.

ATTENDING MINOR LEAKAGE FROM PIPE, BEND, ETC AT DIFFERENT PLACES/LOCATION OF BOILER SIDE FROM "0"METER TO PENTHOUSE OF BOILER.

REPLACEMENT OF (DAMAGED) GASKET OF MANHOLE OF BOILER DRUM WITH NEW ONE.

REPLACEMENT OF MANHOLE OF BOILER DRUM WITH NEW ONE /REPAIRED /WITH OTHER BOILER DRUM MANHOLE.

REPLACEMENT OF PHOSPHATE DOZING PUMP WITH NEW / SERVICED ONE. (COMPLETION PERIOD-4HRS)

SERVICING OF PHOSPHATE DOZING PUMP.

ALIGNMENT OF PHOSPHATE DOZING PUMP WITH MOTOR OF UNIT NO-7.

DE-SCALING OF PRESSURE PARTS & REMOVAL OF SOOT FROM HEATING SURFACE OF BOILER BY STEAM BLOWING THROUGH WALL BLOWER/ LONG RETRACTABLE SOOT BLOWER (LRSB) FROM LOCAL/UCB PANEL OF BOILER OF UNIT NO-7.

COMPLETE SERVICING/ REPAIRING/ REPLACEMENT OF JAMMED/ DAMAGED WALL BLOWER OF UNIT NO-7 FOR SMOOTH OPERATION AS AND WHEN REQUIRED.

COMPLETE SERVICING/ REPAIRING/REPLACEMENT OF JAMMED / DAMAGED LONG RETRACTABLE SOOT BLOWER (LRSB) OF UNIT NO-7 FOR SMOOTH OPERATION AS AND WHEN REQUIRED.

COMPLETE SERVICING/ REPAIRING/ REPLACEMENT OF STEAM VALVES OF WALL BLOWER AND LRSB'S OF UNIT NO-7 AS AND WHEN REQUIRED.

REMOVAL OF CHOCK.IN APH A/B IN FLUE GAS SEC

REMOVAL OF CHOCK.IN APH A/B IN PRIMARY SEC

REMOVAL OF CHOCK.IN APH A/B IN SEC. SEC

SERVICING OF FEED LINE GATE/CONTROL VALVES/NRV SIZE: NB-250MM, NP-260KG/CM2. VALVES COVERED ARE BFD-17,18,19,20,21,22

SERVICING OF LOW LOAD LINE GATE & CONTROL VALVES SIZE: NB-100MM, NP-260KG/CM2. VALVES COVERED ARE FD-15,16,23.

SERVICING OF PNEUMATICALLY OPERATED S/H, R/H ATTEMPERATION CONTROL VALVES & S/H, RH SPRAY BRANCH BLOCK VALVES.

SERVICING OF SH COMMON BLOCK VALVE SD-1, RH COMMON BLOCK VALVE SD-6 AT THE INLET OF SH & RH SPRAY STATION, NP-254KG/CM2 , TEMP-239OC ( SD-1-NB-6"/4" & SD-6-NB-2")

SERVICING OF MAIN ISOLATING VALVE OF MAIN STEAM LINE (L&R)MS-73 & MS-74,NB-244 MM,NP-260KG/CM2.

SERVICING OF BYPASS VALVES OF MAIN STEAM VALVES- S-75,76,77,78, NB-60 MM, NP-139 KG/CM2.

SERVICING OF BYPASS VALVE OF FEED STATION, NP-186KG/CM2.

SERVICING OF BOILER DRUM SAFETY VALVES AT 44 METER ELEVATION OF BOILER. DESIGN PARAMETERS: - A) SV1: PR-158.2 KG/CM2, TEMP.-346OC, SIZE-2.5"/6" B) SV2: PR-162.9 KG/CM2, TEMP.-346OC, SIZE-3"/6"

SERVICING OF ELECTROMAGNETIC RELIEF VALVE. (ERV-1538VX-10W) DESIGN PARAMETERS: - PR.-141.4 KG/CM2, TEMP.-540OC, SIZE-2.5"/4"

SERVICING OF MS LINE SAFETY VALVE (SLSV-1740WD) DESIGN PARAMETERS: - PR-145.0KG/CM2, TEMP-540OC, SIZE-3"/6"

SERVICING OF SAFETY VALVES INSTALLED ON HOT REHEAT AND COLD REHEAT LINE AT ABOUT 42 METER ELEVATION. DESIGN PARAMETERS:- A) CRH SV-5, PR-41.9KG/CM2, TEMP.-359OC, SIZE 3"/6" B) CRH SV-9, PR-42.7KG/CM2, TEMP.-359OC, SIZE-3"/6" C) HRH SV-6, PR-39KG/CM2, TEMP.-540OC, SIZE-6"/8" D) HRH SV-7. PR-39.80KG/CM2, TEMP.-540OC, SIZE-6"/8"

SERVICING OF SOOT BLOWER LINE SAFETY VALVE INSTALLED AT 42 METER ELEVATION. DESIGN PARAMETER: -SV-8, PR-40.0KG/CM2, TEMP-420OC, SIZE-1.5"/ 2.5"

SERVICING OF HIGH-PRESSURE VALVES & NRV'S AT DIFFERENT ELEVATION OF BOILER FROM '0' METER LEVEL TO 44 METER LEVEL NOMINAL BORE MAY VARY FROM Ф10 MM TO Ф100 MM.

REPLACEMENT OF FOLLOWING SIZE VALVES: -

15 MM TO 25 MM VALVES

40 MM TO 50 MM VALVES

SERVICING/REPLACEMENT OF PNEUMATIC/MANUAL VALVES OF OIL STATION AT AB/CD ELEVATION.

SERVICING/REPLACEMENT OF OIL LINE VALVES & NRV'S OF OIL STATION AT AB/CD ELEVATION OF BOILER.

SERVICING OF PNEUMATIC OPERATED CONTROL VALVE SIZE NB 40 TO 100 MM AT DIFFERENT FLOORS OF BOILER FROM '0' METER LEVEL TO 44 METER LEVEL.

SERVICING OF HAND OPERATED VALVE/NRV OF SIZE NB 40 TO 300 MM AT DIFFERENT FLOORS OF BOILER FROM '0' METER LEVEL TO 44 METER LEVEL.

CHANGING FLANGE GASKETS OF VALVES AND FLANGE AT DIFFERENT FLOORS FROM '0' METER LEVEL TO 44 METER LEVEL OF BOILER. RATE SHOULD BE QUOTED PER MM BASIS.

REPLACEMENT OF GLAND PACKING WITH NEW ONE FROM VALVES LEAKING FROM GLAND. RATE SHOULD BE QUOTED PER MM BASIS.

ATTENDING LEAKAGES OF PIPELINE AND HEADERS ETC OF MAIN BOILER BY CUTTING, GRINDING AND HP WELDING OF DAMAGED PORTION OR PUTTING NEW SPOOLS/BENDS IF REQUIRED.

REPLACEMENT OF STARTUP VENT (S/H), AT 44-MTR ELEVATION.

SYSTEM LINE UP FOR FILLING OF FEED WATER THROUGH LP DRAINS & PRESSURIZATION OF PRESSURE PARTS OF BOILER THROUGH FEED PUMP FOR HYDRAULIC TEST OF BOILER. NORMALIZATION OF THE SAME AFTER HYDRAULIC TEST AND MAKING SYSTEM FOR LIT-UP.

REPLACEMENT OF HIGH-PRESSURE VALVE/NRV OF FOLLOWING SIZES AT DIFFERENT ELEVATION OF MAIN BOILER.

50MM TO 100 MM

250MM AND ABOVE

SERVICING/OVERHAULING OF ELECTRICALLY DRIVEN STEAM VALVE DIA-UP TO 100MM.

SERVICING/OVERHAULING OF ELECTRICALLY DRIVEN STEAM VALVE DIA-100MM TO 250MM.

REPLACEMENT OF HP DRAINS PIPE OF ANY SIZE, THICKNESS OF PIPE MORE THAN 6MM. RATE PER JOINT.

M/s Power Tech Engineering Co.