Cochin Shipyard Limited Tender
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Summary
Overhauling Of Main Engine For Vishwa Vikas
Description
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Contact
Tender Id
2022_CSL_130584_1Bid Award Id
ViewTender No
SR9/717A32183/GePNIC/012Tender Authority
Cochin Shipyard Limited ViewPurchaser Address
-Website
http://etenders.gov.in
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Documents
BOQ Items
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DISMANTLE THE EXHAUST V/VS COMPLETELY AND OVERHAUL.
THOROUGHLY CLEAN ALL PARTS & SHOW TO SURVEYORS &SUPTD. RENEW ALL WORN / DEFECTIVE PARTS AS REQUIRED & ALL SEAL RINGS FROM SHIP’S SPARES. CHECK THE VALVE & SEATS & IF REQUIRED GROUND THE VALVES & SEATS AS PER MAKER’S INSTRUCTIONS. THOROUGHLY CLEAN EXHAUST V/VS COOLING WATER SURFACES.
ASSEMBLE THE EXHAUST VALVES AS THE ORIGINAL AND FIT THE EXHAUST VALVES IN PLACE ON CYLINDER HEADS. ALL CYLINDER HEAD ASSSEMBLIES TO BE TRANSPORTED BACK ONBOARD.
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ALL LINER SURFACES & SCAVENGE PORTS TO BE THROUGHLY CLEANED.
L.O.QUILL PASSAGES TO BE THROUGHLY BLOWN THROUGH WITH COMPRESSED AIR & CLEARED. LINERS TO BE CALIBRATED AND READINGS TO BE RECORDED. CARRY OUT DYE CHECK ON ALL CYLINDER LINERS IN WAY OF TOP AND BOTTOM L.O.GROOVES FOR DETECTING CRACKS IF ANY & SHOWN TO SURVEYORS & SUPDT. LINER PORT EDGES TO BE SMOOTHENED IF REQUIRED.
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PISTON HOLDING NUTS TO BE OPENED. LINER TOP RIDGES TO CLEAN AND GRIND. PISTON TO BE WITHDRAWN ALONG WITH STUFFING BOXES AND SHIFTED/TRANSPORTED TO SHOP. PISTON RINGS & STUFFING BOX TO BE REMOVED. STUFFING BOX TO BE DISMANTLED OVERHAULED CLEANED INSPECTED AND ASSEMBLED WITH NEW SPARE SHIP SUPPLY. CHECK THE PISTON CROWN WEAR DOWN BY WEARDOWN GAUGE. PISTON RING GROOVES TO BE THOROUGHLY CLEANED. GROOVES & PISTON RINGS TO BE CALIBRATED & READINGS TO BE RECORDED. ALL PARTS TO BE PRESENTED TO SURVEYORS & SUPTD. AFTER THEIR APPROVAL ASSEMBLE ALL PISTONS AS PER MAKER’S INSTRUCTIONS. ALL PISTONS TO BE PRESSURE TESTED WITH OIL TO 10 BARS IN PRESENCE OF SURVEYORS & SUPTD/CEO. PISTON ROD TO BE GAUGED. PISTONS TO BE ASSEMBLED WITH NEW PISTON RINGS. PISTON ROD STUFFING BOX ALL PARTS TO BE THOROUGHLY CLEANED. STUFFING BOX CALIBRATIONS TO CHECK AND RECORD THE READINGS. ALL WORNOUT / DAMAGED PARTS TO BE RENEWED FROM SHIP’S SPARES. STUFFING BOXES TO BE ASSEMBLED ON PISTON RODS USING NEW SEAL RINGS SCRAPER RINGS & SPRINGS. PISTON RODS ALONG WITH STUFFING BOXES TO BE TRANSPORTED BACK ONBOARD. IF ANY PART IS WORN OUT BEYOND LIMIT SAME TO BE REPLACED WITH NEW SPARES OR RECONDITIONED AS PER OEM PROCEDURE.
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CROSS HEAD SURFACES TO BE CLEANED THOROUGHLY. LOWER THE
PISTONS IN PLACE ALONG WITH THE STUFFING BOXES AND TIGHTEN THE NUTS AS PER MAKER’S INSTRUCTIONS.STUFFING BOX BOLTS TO BE TIGHTENED. ALL LASHINGS / LOCKINGS TO BE RESTORED. LOWER THE CYLINDER HEADS ALONG WITH EXHAUST V/VS AND TIGHTEN THE NUTS. ALL CYLINDER HEAD CONNECTIONS TO BE RESTORED BACK AS THE ORIGINAL. C.W. TO BE TRIED OUT AND ENSURE NO LEAKAGES. F.O. & L.O.
TO BE TRIED OUT. F.O.LINES TO BE PRIMED. ALL LAGGINGS TO BE FIT BACK TO ITS ORIGINAL POSITION AND SECURE.
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C / CASE TO BE THOROUGHLY CLEANED & INSPECTED. C/CASE DOORS TO BE BOXED BACK AS THE ORIGINAL. Nos 6
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E21011.10 SATISFACTORY MAIN ENGINE RUNNING TRIAL (BASIN TRIALS) 3 HRS TO BE GIVEN. MAIN ENGINE SEA TRIALS FOR ABOUT 4-6 HOURS ALSO TO BE GIVEN.
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DISMANTLE PISTON ALL PARTS TO BE THOROUGHLY CLEANED AND
EXAMINED. D.P.TESTS TO BE CARRIED OUT ON PISTON CROWNS AND PISTON SKIRTS AND CHECKED FOR FRETTING AND CRACKS AS PER MAKER’S INSTRUCTIONS. ALL PARTS TO BE PRESENTED TO SURVEYORS & SUPTD . AFTER THEIR APPROVAL ASSEMBLE ALL PISTONS AS PER MAKER’S INSTRUCTIONS. ALL PISTONS TO BE PRESSURE TESTED WITH OIL TO 10 BARS IN PRESENCE OF SURVEYORS & SUPTD.
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SCAVENGE RELEIF DEVICES CRANKCASE DOORS AND RELIEF DEVICES TO OVERHAUL AND TO BE SHOWN TO THE CLASS SURVEYOR
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HYDRAULIC ACTUATOR FOR EXH VALVES TO BE OVERHAULED. HOUSING AND PISTON TO BE LIFTED (PISTON TO BE RELEASED FROM BAYONET LOCK BY DISMANTLING LOCKING PLATE AND TURNING BY 90 DEG.). PARTS TO BE DISMANTLED INSPECTED AND SHOWN TO SURVEYOR.OIL CYLINDER LINER TO CALIBRATE.SAFETY V/VS AND NON RETURN V/VS TO BE OVERHAULED.AFTER SURVEY ACTUATOR TO BOXED BACK WITH NEW PISTON RING AND FITTED ON ITS PLACE WITH ALL CONNECTION.
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CHAIN TENSIONING TO BE CHECKED & ADJUSTED FOR VIBRATION
DAMPERS AND PUT UP FOR SHOWN TO SURVEYER. UP TO SURVEYOR SATISFACTION
UNDER CSM SURVEY
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GRINDING OF EXHAUST VALVE SEAT AND VALVE BY GRINDING MACHINE.
QUOTE PER PCS.
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MACHINING OF LANDING FACES OF AIR STARTING V/VS EXHAUST V/VS
FUEL V/VS ON CYLINDER HEADS
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CYLINDER COVERS COMBUSTION SPACES TO CHECK FOR CRACKS WITH
D.P. TEST –
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QUOTE FOR RECONDITIONING OF EXHAUST VALVE SPINDLE EXHAUST
VALVE SEAT AND CYLINDER HEAD AND NOS OF DAYS REQUIRE WHICH SHOULD BE REFLECTED /INCLUDED IN THE COMPLETION OF ENTIRE DD REPAIR.
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QUOTE FOR LINER WITHDRAWAL OVERHAUL & REFITTING PER UNIT. IF LINER WEAR DOWN BEYOND LIMIT SAME TO BE REPLACED WITH NEW SHIP SUPPLY LINER.
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E21013 ITEM: MAIN ENGINE FUEL INJECTION PUMPS
TYPE / CAPACITY / DETAILS : MAN B & W 6S50MC-C8 TIER II POWER= 9480 KW @
127 RPM
FOLLOWING JOBS TO CARRY OUT. ISOLATE EMERGENCY STOP BUTTON AS LONG
AS ANY WORK IS CARRIED ON FUEL PUMP BLOCKS.
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ALL INLET AND OUTLET CONNECTIONS TO BE REMOVED AND FUEL P/P
BLOCKS TO BE TAKEN OUT FROM PLACE TRANSPORTED TO WORKSHOP. PUMPS TO BE COMPLETELY DISMANTLED FOR INSPECTION PARTS TO BE CLEANED OVERHAULED AND MADE READY FOR SURVEY.ALL UNIT PLUNGER BARREL TO OVERHAULED AND SEALING RING TO BE RENEWED.SEALING RING IN BARREL TO BE RENEWED.
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PUNCTURE VALVE AND SUCTION VALVE TO BE OVERHAULED
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ALL FUEL INJECTION PUMPS TO BE PRESENTED TO CLASS SURVEYORS.
AFTER COMPLETION OF SURVEY TO BOX BACK FITTED IN PLACE AS ORIGINAL.
INDIVIDUAL P/P TIMING TO CHECK & ADJUST AS NECESSARY & TO BE RECORDED.
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SHOCK ABSORBER TO BE CHECKED AND OVERHAULED .
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PRIMING TRIAL TO BE GIVEN.WHEN PUMP IS PUT ON USE CHECK FOR ANY LEAKAGE AND ABNORMAL TEMPERATURE RISE. IF ANY DEFECT SAME TO BE RECTIFIED.
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VIT GEAR TO BE CHECKED AND OVERHAUL AND ADJUSTED
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FUEL CAM TO BE CHECKED AND LEAD TO BE MEASURED.
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E21014 ITEM : MAIN ENGINE MAIN BEARINGS &THRUST BEARING
TYPE / CAPACITY / DETAILS : MAN B & W 6S50MC-C8 TIER II POWER= 9480 KW @
127 RPM
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CHECK AND RECORD ALL MAIN BRG AND THRUST BEARING CLEARANCES BEFORE AND AFTER INSPECTION
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MAIN ENGINE CRANK SHAFT DEFLECTION TO BE TAKEN BEFORE
DISMANTLING AND AFTER ASSEMBLING.ALL READINGS TO BE SUBMITTED.
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DISMANTLE BEARING AS PER MAKER INSTRUCTION ALL PARTS TO CLEAN AND SHOW IT TO SURVEYOR . BEARING AND JOURNAL TO BE CALIBRATED AND RECORDED . JOURNAL TO POLISH PRIOR BOXING UP DYE PNETRANT TEST TO BE CARRIED OUT FOR CHECKING ANY CRACK . AFTER SUCCESSFUL COMPLETION OF SURVEY BEARINGS TO BE BOXED BACK WITH OLD/NEW SHELL SATISFACTORY RUNNING TRIAL AND BRG TEMP TO BE MONITORED AND RECORDED DURING RUNNING TRIAL. QUOTE PER BEARING NOS OF BEARING TO BE OPENED ON OWNER DECESION. IF ANY BEARING SHELL WORN OUT BEYOND LIMIT NEW SHIP SUPPLY BEARING TO BE FITTED. QUOTE TO BE INCLUSIVE OF ALL CHARGES.
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ALL AHEAD AND ASTERN THRUST BEARINGS PADS TO BE OPENED UP AS PER MANUAL AND SAME TO BE PUT UP TO SURVEYER. AFTER SURVEYOR SATISFACTION UNDER CSM SURVEY SAME TO BE BOXED BACK
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E21015 ITEM : MAIN ENGINE CRANK PIN BEARINGS
TYPE / CAPACITY / DETAILS : MAN B & W 6S50MC-C8 TIER II POWER= 9480 KW @
127 RPM
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CHECK AND RECORD ALL C/P BEARING CLEARANCES BEFORE AND AFTER INSPECTION.
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DISMANTLE AND OVERHAUL CRANK PIN BEARING. LOWER THE BOTTOM
HALVES IN THE CRANKCASE LOCK X-HEAD ON TO GUIDES SUPPORT AND SWING OUT CONNECTING RODS FOR INSPECTING UPPER BRG HALVES. CLEAN ALL PARTS AND PRESENT TO CLASS SURVEYOR. DYE PENETRANT TEST TO BE CARRIED OUT. AFTER SUCCESSFUL COMPLETION OF SURVEY BRGS TO BE BOXED BACK AS ORIGINAL. SATISFACTORY RUNNING TRIAL TO BE GIVEN DURING SEA TRIAL. BEARING TEMPERATURE TO BE MONITORED. QUOTE TO BE INCLUSIVE OF ALL CHARGES.
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IF BEARING SHELL WORN OUT BEYOND PERMISSIBLE LIMIT SAME TO BE
RENEWED WITH OWNER SUPPLIED BEARING
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E21016 ITEM : MAIN ENGINE CROSS HEAD BEARINGS
TYPE / CAPACITY / DETAILS : MAN B & W 6S50MC-C8 TIER II POWER = 9480 KW @
127 RPM
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CHECK AND RECORD ALL SIX CROSSHEAD BRGS CLEARANCES BEFORE OPENING THE XHD BEARING AND AFTER ASSEMBLY OF XHD BRGS.
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DISMANTLE CROSSHEAD BEARING AS PER MAKER'S INSTRUCTION. BOTH TOP AND BOTTOM BEARING TO BE TAKEN OUT. ALL PARTS TO BE CLEANED.BOTH TOP AND BOTTOM BRG SHELLS AND CROSSHEAD PINS TO BE EXAMINED. CROSSEHAD PIN TO CALIBRATE AND READINGS TO RECORD.DYE PENETRANT TEST TO BE CARRIED OUT TO IDENTIFY ANY CRACK IF ANY. CLEAN ALL PARTS AND PRESENT TO CLASS
SURVEYOR AND AFTER SUCCESSFUL COMPLETION OF SURVEY BRGS TO BE BOXED BACK AS ORIGINAL. ALL UNITS X-HEAD BEAD BEARING CLEARANCES TO BE TAKEN AND PRESENTED TO SURVEYOR . IF ANY PART/ BEARING SHELL WORN OUT BEYOND LIMIT NEW SHIP SUPPLY PART /BEARING TO BE FITTED. QUOTE TO BE INCLUSIVE OF ALL
CHARGES.
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TO MEASURE CLEARANCE BETWEEN ALL UNITS RECIPROCATING PARTS:
1. CENTERING OF THE LINER
2. CLEARANCE BETWEEN GUIDE STRIP AND XHD
3. CLEARANCE BETWEEN GUIDE SHOE AND XHD.
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QUOTE FOR MAIN ENGINE CROSSHEAD PIN RENEWAL PIN SHIP SUPPLY
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E21020 ITEM: PRE-TENSIONING STAY BOLTS; TIE BOLTS FOR M/E
TYPE / CAPACITY / DETAILS : MAN B & W 6S50MC-C8 TIER II POWER= 9480 KW @
127 RPM
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28 NOS. TIE BOLTS TO BE CHECKED FOR PRETENSION. HYDRAULIC
DISMANTLING PRESSURE 1500 BAR (TO CONFIRM).STAY BOLTS TO BE RETIGHTENED IN PAIRS WORKING FROM THE MIDDLE TOWARDS ONE END AND THEN AGAIN FROM THE MIDDLE TOWARDS THE OTHER END.HYDRAULIC PRESSURE TO BE MAINTAINED AT D1 AND STAY BOLT NUTS RETIGHTENED WITH A TOMMY BAR MAKING SURE NUTS BEARING
AGAINST CONTACT FACE WITH A FEELER GUAGE. AFTER COMPLETING ALL BOLTS THE FIRST PAIR OF STAY BOLTS TO BE TIGHTENED TO 10% BELOW D1 AND NUT TO BE CHECKED FOR LOOSENESS. IF FOUND LOOSE ALL STAY BOLTS TO BE TIGHTENED ONCE AGAIN. IF NOT LOOSE THE FIRST PAIR TO BE TIGHTENED TO D1 .
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E21021 RE-TIGHTENING OF HOLDING DOWN BOLTS & END CHOCKS FOR M/E
TYPE / CAPACITY / DETAILS : MAN B & W 6S50MC-C8 TIER II POWER= 9480 KW @
127 RPM
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HOLDING DOWN BOLTS TIGHTNESS TO BE CHECKED (USING HYDRAULIC
JACK MARKED WITH HOLDING DOWN BOLTS) BY RAISING THE HYDRAULIC PRESSURE SLOWLY WHILE CONSTANTLY ATTEMPTING TO LOOSEN THE NUT WITH THE TOMMY BAR. THE OIL PRESSURE INDICATED BY THE PRESSURE GAUGE WHEN THE NUT COMES TO LOOSE (LOOSENING PRESSURE) IS TO BE RECORDED IN THE CHECKING TABLE. THE BOLTS ARE TIGHTENED TO THE NORMAL TIGHTENINIG PRESSURE THEREAFTER. TIGHTENING PRESSURE – TO CONFIRM.
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END CHOCK BOLTS TIGHTNESS TO BE CHECKED (USING HYDRAULIC JACK MARKED WITH EPOXY CHOCKS) BY RAISING THE HYDRAULIC PRESSURE SLOWLY WHILE CONSTANTLY ATTEMPTING TO LOOSEN THE NUT WITH THE TOMMY BAR. THE OIL PRESSURE INDICATED BY THE PRESSURE GAUGE WHEN THE NUT COMES TO LOOSE (LOOSENING PRESSURE) IS TO BE RECORDED IN THE CHECKING TABLE. THE BOLTS ARE TIGHTENED TO THE NORMAL TIGHTENINIG PRESSURE THEREAFTER.
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IMMEDIATELY AFTER FINISHING OF CHECKING OF THE LOOSENING
PRESSURES OF THE HOLDING DOWN BOLTS AND THE RETIGHTENING OF THE HEIGHT OF THE EPOXY SUPPORTING CHOCKS ARE TO BE CHECKED. WARNING: ACCIDENTAL APPLICATION OF LARGER JACK (MEANT FOR THE END CHOCK BOLTS) ON THE HOLDING DOWN BOLTS WOULD CAUSE SERIOUS OVER-STRESSING OF EPOXY SUPPORTING CHOCKS.
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E21022 ITEM : MAIN ENGINE CRANKCASE & SUMP
TYPE / CAPACITY / DETAILS : MAN B & W 6S50MC-C8 TIER II POWER = 9480 KW @
127 RPM
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MAIN ENGINE SUMP (CIRCULATING LUB OIL TK.) LUB OIL TO REMOVE FROM THE TANK & COLLECT IN ABSOLUTELY CLEANED TKS OR DRUMS (YARD SUPPLY); TANK TO BE VENTILATED; MAN ENTRY CERTIFICATE TO BE OBTAINED AND TANK TO BE THOROUGHLY CLEANED OFF SLUDGE.CAPACITY:17.69 M3
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ENTIRE CRANK CASE WITH GEARS TO BE CLEANED THOROUGHLY TO
REMOVE DIRTY OIL STAINS FROM THE WALLS OF CRANK CASE & SURFACES OF THE RUNNING GEARS.
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INSPECTION OF CRANKCASE DRAIN TANK STRUCTURE TO BE CARRIED OUT; IF ANY CRACK FOUND IN THE STRUCTURE IN BETWEEN COFFERDAM AND DRAIN TANK; SAME TO BE WELDED / REPAIRED AFTER OBTAINING NECESSARY HOTWORK PERMIT.
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OIL TO PUT BACK IN SUMP AFTER COMPLETION OF CLEANING AND
INSPECTION.
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MAIN ENGINE LO SUMP DIAPHRAGMS GASKET/NEOPRENE TO RENEW.
DIAPHRAGM YARD SUPPLY. MANHOLES FOR THE SUMP ENTRY TO BE OPENED AND BOXED BACK AFTER THE WORK. ABOVE QUOTE TO BE INCLUSIVE OF CONSUMMABLES GASKET MANPOWER TRANSPORTATION EMPTY TANK FACILITY PORTABLE PUMP HOSES ETC.
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E21025 ME CYLINDER LUBRICATORS
TYPE / CAPACITY / DETAILS : MAN B & W 6S50MC-C8 TIER II POWER= 9480 KW @
127 RPM
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ALL 6 UNITS CYLINDER LUBRICATORS TO REMOVE FROM PLACE AND
CLEANED THOROUGHLY WITH KEROSENE ANND FLUSHED WITH LUB OIL. ALL LINE
FILETRS TO CLEAN.
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ALL CYLINDER PUMPS OPERATION TO CHECK AND REPAIR AS REQUIRED
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TIMINGS OF CYLINDER ADMISSION TO BE CHECKED AS PER MAKER'S
INSTTRUCTIONS
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ADJUSTMENT OF CYLINDER LUBRICATOR TO BE CARRIED OUT AS
REQUIRED BELOW.
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CHECK GAS PRECHARGE PRESSURE SAFETY DEVICES FITTINGS LINE
CONNECTIONS AND ACCUMULATOR FIXATION OF DIAPHRAM ACCUMULATOR
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NITROGEN TO BE CHARGED IN ALL THE ACCUMULATOR(SUPPLY OF GAS BY YARD)
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