Propeller Shaft routine works on INS SUJATA

Amount

PROPELLER SHAFTING WORKS (PORT SIDE & STBD SIDE): THE FOLLOWING JOBS ARE TO BE CARRIEDOUT ON PORT & STBD PROPELLER SHAFTING LINE. AFTER COMPLETION OF ALL REPAIR/RENEWAL/ALIGNMENT WORKS, SATISFACTORY BASIN & SEA TRIALS TO BE OFFERED & SHOWN AT FULL POWER TRIALS TO SS/HSL/SURVEYORS/NAVY TRIALS TEAM.

REMOVAL OF ROPE GUARDS AND REFITMENT AFTER COMPLETION OF ALL PROPELLER SHAFT ROUTINES. REPLACE ALL THE SCREWS (BRONZE) OF ROPE GUARD WHILE REFITMENT.

REMOVE MARINE GROWTH FROM PROPELLER SHAFT, BLADES AND BUFFING, VARNISHING OF PROP BLADES TO BE CARRIED OUT&VISUALLY CHECK FOR DAMAGE. THOROUGH CLEANING OF THE SHAFTS TO BE CARRIED OUT AS AND WHEN REQUIRED FOR IRS/ND(v) SURVEYS.

GAUGING / CALIBRATION OF P&S PROPELLER SHAFTING LINE COMPONENTS:

a) PORT & STBD PROPELLER / INTERMEDIATE SHAFTS ALIGNMENT CHECKS ARE TO BE CARRIEDOUT FROM TAIL SHAFTS TO ME GEAR BOX BEFORE AND AFTER REMOVAL / REFITMENT OF SHAFTS AND RECORDED IN PRESENCE OF SURVEYOR / IRS / Ship / HSL/ NAVY. CHECK ALIGNMENT BETWEEN ENGINE/REDUCTION GEAR AND REDUCTION GEAR/OUT PUT SHAFT THROUGH STERN BUSHES AND A-BRACKET ON COMPLETION OF MAJOR OVERHAUL. RECORD THE READINGS.

b) TO GAUGE / CALIBRATE OF ALL SHAFT LINE COMPONENTS ( ALL JOURNALS, BEARINGS, BULKHEAD AREAS) IN PRESENCE OF SURVEYOR / Ship / HSL / IRS. ALL CLEARANCES OF ALL BUSHES / BEARINGS, POCKER GAUGE ARE TO BE MEASURED AND RECORDED IN PRESENCE OF SURVEYOR / IRS / Ship / HSL/ NAVY (STERNTUBE, A-BRACKET, P-BRACKET, BULKHEAD GLANDS, PLUMMER BLOCKS). CALBRATE SHAFT LINERS (BOTH SIDES) TO BE CARRIED OUT. ALL CALIBRATION WORKS ARE TO BE CARRIEDOUT BEFORE AND AFTER REMOVAL / REFITMENT OF SHAFTS AND CALIBRATION REPORTS ARE TO BE SUBMITTED. THOROUGH CLEANING OF STERN TUBE BUSHES AND SHAFT LINE AREA TO BE DONE. GAUGING OF PROPELLER SHAFT, HUB , BLADES, STERN TUBE BUSHES, A-BRACKET, P-BRACKET TO BE CARRIED OUT IN PRESENCE OF SERVICE ENGINEER. NECESSARY INSTRUMENTS FOR GAUGING ARE TO BE ARRANGED BY CONTRACTOR WITH CALIBRATION CERTIFICATES. READINGS ARE TO BE MEASURED /RECORDED BY COMPETENT PERSON.

ALIGNMENT CHECKS & CORRECTION OF MISALIGNMENT:

a) ALIGNMENT CHECKS: LASER SIGHTING OF PROPELLER SHAFT LINE IS TO BE CARRIEDOUT FROM A-BRACKET TO REDUCTION GEAR BOX ('A’BRACKET BEARING, P-BRACKET BEARING, STERN TUBE BUSHES FWD & AFT, PLUMMER BLOCKS - 2 Nos EACH SIDE) IN PRESENCE OF SURVEYOR / IRS / HSL/ Ship.

b) CORRECTION OF MISALIGNMENT: IF ANY DEVIATION IN SHAFTING LINE WAS FOUND TO BE CORRECTED BY ADJUSTING THE PLUMMER BLOCKS, STERNTUBE BUSHES, A BRACKET BUSHES (STERNTUBE AND A-BRACKET BUSHES, P-BRACKET BUSHES ADJUSTMENT BY ECCENTRIC MACHINING OF BUSHES / STAVES). POST CORRECTION / ALIGNMENT OF SHAFT LINE RE-LASER SIGHTING IS TO BE SHOWN TO IRS/ HSL/ SS / NAVY. CALIBRATED LASER SIGHTING EQUIPMENT WITH AUTHORISATION MUST BE USED. NOTE: ANY CORRECTIONS (ECCENTRIC MACHINING & OFFSET MACHINING) ON STERN BUSHES (BOTH P & S SIDES) & A-BRACKET (BOTH P & S SIDES) & P-BRACKET (BOTH P & S SIDES) DURING ALIGNMENT BY LASER SIGHTING IS CONTRACTOR'S SCOPE.

c) TAIL SHAFTS & INTERMEDIATE SHAFTS LINERS TO BE REPLACED. MACHINING & RENEWAL OF LINERS IS INCLUDED IN CONTRACTORS SCOPE.

DEEP SEA SEALS: REMOVE BOTH P & S FWD AND AFT SHAFT SEALS, OVERHAULED, ASSEMBLY OF SHAFT SEALS AND TESTING, ALIGNMENT WORKS TO BE CARRIED OUT IN PRESENCE OF SERVICE ENGINEER. COMPLETE SERVICE ASSISTANCE TO BE PROVIDED TO SERVICE ENGINEER TILL TRIALS ARE COMPLETED. OEM SPARES WILL BE SUPPLIED BY CONTRACTOR ONLY AND CONSUMABLES ARE TO BE ARRANGED BY CONTRACTOR. PORT SIDE - 2 SETS (FWD & AFT) & STBD SIDE - 2 SETS ( FWD & AFT )

DECOUPLE THE PROPELLER TAIL SHAFT AND INTERMEDIATE SHAFTS IN ENGINE ROOM. HYDRAULIC POWER PACKS, ADAPTORS, HYDRAULIC HOSES DEGUT, REGUT FOR DECOUPLING ARE INCLUDED IN CONTRACTOR'S SCOPE. COUPLING BOLTS IF REQUIRED TO BE REPLACED WITH SAME MATERIAL GRADE, BOLTS CONTRACTOR SUPPLY. SUPPLY OF COUPLING BOLTS, REAMING AND MACHINING IS INCLUDED IN CONTRACTORS SCOPE. TAIL SHAFTS ARE TO BE REMOVED FROM POSITION AND SHIFTED TO JETTY AT SECURED POSITION. TAIL SHAFTS ARE TO BE FITTED ONBOARD AFTER COMPLETION OF ALL REPAIR WORKS. COUPLING REMOVAL AND REFITMENT IS INCLUDED IN CONTRACTORS SCOPE.

TRUENESS CHECKS OF THE SHAFTS ARE TO BE CARRIED OUT IN PRESENCE OF IRS / SS / HSL /NAVY. TRUENESS CHECKING ARRANGEMENTS ARE TO BE MADE BY CONTRACTOR WITH QUALIFIED MACHINIST. TO AND FRO TRASPORTATION OF SHAFTS IS COVERED IN CONTRACTOR'S SCOPE.

TRUENESS CHECKS OF THE INTERMEDIATE SHAFTS ARE TO BE CARRIED OUT IN PRESENCE OF IRS / SS / HSL /NAVY. TRUENESS CHECKING ARRANGEMENTS ARE TO BE MADE BY CONTRACTOR WITH QUALIFIED MACHINIST. TO AND FRO TRASPORTATION OF SHAFTS IS COVERED IN CONTRACTOR'S SCOPE.

NDT OF PROP BLADES, HUB, HUB BOLTS IS TO BE CARRIED OUT IN PRESENCE OF SURVEYOR WITH QUALIFIED PERSONNEL OF NDT LEVEL 2/3. DP TEST KITS ARE TO BE ARRANGED BY CONTRACTOR. MAGNETIC PARTICLE TEST TO BE CARRIED OUT ON SHAFT JOURNAL AREAS AND COUPLING AREAS WITH QUALIFIED PERSONNEL OF NDT LEVEL 2/3. UT TO BE CARRIEDOUT ON THE SHAFT AND LINERS, COUPLING AREAS.

PLUMMER BLOCK: DISMANTLE AND GAUGE BEARING. INSPECT WHITE METAL FOR WEAR, FLAKING, SCORING ETC. REMETAL AND MACHINE TO ORIGINAL DIMENSIONS AS REQUIRED IS COVERED IN CONTRACTOR'S SCOPE. REMETALING IS TO BE CERTIFIED BY IRS. RENEW FOUNDATION BOLTS & TWO HALF HOUSING BOLTS OF PLUMMER BLOCK,WITH EXISTING MATERIAL GRADE. ANY CORRECTIONS DURING SIGHTING OR ALIGNMENT TO BE CARRIED OUT AND ANY MACHINING/REAMING IS TO BE CARRIED OUT BY CONTRACTOR. CHOCKS MANUFACTURING & MACHINING, REAMING IS INCLUDED IN CONTRACTORS SCOPE.

GREASING OF ALL PLUMMER BLOCK BEARINGS, BULKHEAD GLANDS ARE TO BE DONE WITH GREASE. CASTROL SPHEROL AP3 = 30 Kgs. (GREASE & STD. GLAND PACKINGS & ORINGS, GRAPHITE RINGS, SPRINGS, CLAMPS, BOLTS AND NUTS, RUBBER COMPONENTS ARE TO BE SUPPLIED BY CONTRACTOR ONLY).

PLUMMER BLOCK S/W COOLER IS TO BE PRESSURE TESTED AND REFITTED. END PLATE GASKETS TO BE REPLACED. CORROSION PLUGS TO BE REPLACED. CHEMICALS FOR CLEANING (DESCALING AND DEGREASING), GASKETS (PURE NEOPRENE/OIL JOINTS) , CORROSSION(ZINC COATED BRONZE BOLTS) PLUGS ARE TO BE SUPPLIED BY CONTRACTOR. COLD REPAIRS ARE TO BE CARRIEDOUT IF REQUIRED. PUTTY TO BE SUPPLIED BY CONTRACTOR ONLY.

WHILE FITMENT OF ALL SHAFTS, ALIGNMENT CHECKS ARE TO BE DONE AT GEAR BOX TO INTERMEDIATE SHAFTS, INTERMEDIATE SHAFTS TO TAIL SHAFT. SHAFT GAP AND SAG VALUES ARE TO BE ADJUSTED. MACHINING WORKS AND SHIMS ARE INCLUDED IN CONTRACTOR SCOPE. BEARING LOADING CHECKS ARE TO BE CARRIEDOUT AT ALL PLUMMER BLOCKS AND STERNTUBE FWD BUSH AND GEAR BOX LOCATIONS AND SHOWN TO SURVEYOR / SS / HSL / NAVY.

REMOVE STERN TUBE BUSHES. CLEAN AND EXAMINE FOR WEAR/DETERIORATION. RENEW BUSHES IF REQUIRED (BUSHES WILL BE PROCURED AND SUPPLIED BY CONTRACTOR ONLY THROUGH NAVY APPROVED VENDORS). ALL NUTS AND BOLTS TO BE RENEWED. ANY MACHINING ( ECCENTRIC MACHINING / OFFSET MACHINING) WHILE RENEWAL OF STERN BUSHES IS CONTRACTOR'S SCOPE. ALL CONSUMABLES ARE INCLUDED IN CONTRACTORS SCOPE.

REMOVE FWD AND AFT 'A' BRACKET STAVES AND BUSHES. CLEAN AND EXAMINE FOR WEAR/DETERIORATION. RENEW BUSHES IF REQUIRED (BUSHES WILL BE PROCURED AND SUPPLIED BY CONTRACTOR ONLY THROUGH NAVY APPROVED VENDOR). ALL NUTS AND BOLTS TO BE RENEWED. A- BRACKET THORDON STAVES WILL BE PROCURED AND SUPPLIED BY CONTRACTOR ONLY THROUGH NAVY APPROVED VENDOR. ANY MACHINING ( ECCENTRIC MACHINING / OFFSET MACHINING) WHILE RENEWAL OF A-BRACKET BUSHES IS CONTRACTOR'S SCOPE. ALL CONSUMABLES ARE INCLUDED IN CONTRACTORS SCOPE.

CHECK THE OPERATION OF PROPELLER SHAFT AND CPP FUNCTIONING BEFORE SHAFT WITHDRAWL. CHECK THE MARKINGS IN ALL PITCH POSITIONS. DRAIN CONTROL OIL COMPLETELY. RENEW WITH NEW OIL ( OMD-113, 1200 LTR / SYSTEM ). OIL TO BE SUPPLIED BY CONTRACTOR. DISMANTLE THE SHAFT, PROPELLER BLADES, ACTUATING UNIT OF CPP SYSTEM. CARRY OUT STATIC PRESSURE TEST OF PROPELLER HUB. TEST PR. 0.5 BAR. CARRY OUT PRESSURE TEST OF CPP SYSTEM AT MAXIMUM WORKING PRESSURE i.e,WITH THE PROPELLER PITCH IN FULL AHEAD & ASTERN. WORKING PR. 50 BAR PITCH CHANGE TIMING: CHECK, RECORD AND COMPARE WITH COMMISSIONING TRIAL DATA, THE TIME TAKEN FOR CHANGING PITCH FROM FULL ASTERN TO FULL AHEAD AND FROM FULL AHEAD TO FULL ASTERN. IF TIMING FOUD OUT OF PERMISSIBLE LIMITS, THE SAME TO BE RECTIFIED ALONG WITH REPLACEMENT OF THE DEFECTIVE COMPONENTS. SET 60 SEC. OEM SPARES WILL BE SUPPLIED BY CONTRACTOR ONLY.

ACTUATING UNIT: DISMANTLE ACTUATING UNIT. REPLACE SHAFT SEAL & O RINGS. EXAMINE CONTROL EDGES ON PILOT PISTON, CONTROL PISTON & CONTROL BUSHING FOR CONDITION AND PROPER OVERLAPPING. REPAIR IF FOUND DEFECTIVE. READJUST CONTOL OIL SYSTEM. JOB TO BE PERFORMED UNDER OEM SUPERVISION. BOTH CPP ACTUATING UNIT FUNCTIONAL CHECKS TO BE CARRIED OUT. REPAIR/REPLACE THE DEFECTIVE COMPONENTS. CPP RELATED SPARES WILL BE SUPPLIED BY CONTRACTOR ONLY. ALL HYDRAULIC SYSTEM AND PNEUMATIC COMPONENTS OF BOTH CPP SYSTEM E.G. PCV'S, CHECK VALVES, REDUCING VALVES, SAFETY AND RELIEF VALVES, FLOW CHECK VALVES ETC TO BE REMOVED AND INSPECTED FOR CORRECT OPERATION. DEFECTIVE COMPONENTS TO BE SUPPLIED AND REPLACED, OVERHAULED BY CONTRACTOR.

GEAR DRIVEN CPP PUMP TO BE OVERHAULED. DISMANTLE PUMP. REPLACE THE MECHANICAL SEAL. RENEW ALL SEALS, BUSHES, BEARINGS, COUPLINGS, PADS AND JOINTS. RENEW ALL WORN OUT RUBBER BUSHES. INSPECT THE SHAFT CLEARANCE & BUILDING UP MATERIAL IF REQUIRED. ASSEMBLE THE PUMP AND REFIT IT. PERFORMANCE TRIAL TO THE PUMP TO BE PROVEN. ALL REQUISITE SPARES ARE TO BE SUPPLIED AND FITTED BY CONTRACTOR.

BOTH CPP HEADER TANK MOTOR DRIVEN PUMPS TO BE OVERHAULED. DISMANTLE PUMP. REPLACE THE MECHANICAL SEAL.RENEW ALL SEALS AND JOINTS. RENEW ALL WORN OUT RUBBER BUSHES. INSPECT THE SHAFT CLEARANCE & BUILDING UP MATERIAL IF REQUIRED. ASSEMBLE THE PUMP AND REFIT IT. PERFORMANCE TRIAL TO THE PUMP TO BE PROVEN. ALL REQUISITE SPARES ARE TO BE SUPPLIED AND FITTED BY CONTRACTOR.

O/H PRESSURE REDUCING VALVE. SIZE - 50MM; SET PR. 06 BAR - 02 NOS; OVERHAUL AND RESET RELIEF VALVE - 40MM; SET PR. 50 BAR - 2 NOS; OVERHAUL AND CARRY OUT FUNCTIONAL CHECK OF THERMOSTATIC CONTROL VALVE. TEMP. -25 TO 70 DEG C. - 2 NOS

SPARES FOR ENTIRE SCOPE OF WORK (SHAFTING, DEEP SEA SEALS & CPP, ACTUATING SPARES): Contractor has to quote lumpsum cost for mandatory spares mentioned at Annexure - A in Mandatory Spares List, for the entire SoW, against OEM invoice for all spares supplied for the Scope. The taxes will be paid as per actuals. Mandatory List of Spares is attached. Contractor has also to quote all line items mentioned in Mandatory Spares List (Annexure-A) seperately. The price quoted in BOQ wrt under this serial should match to the total price furnished by the bidder as per the detailed price breakup in Annexure A. In case of any discrepancy, the amount which is beneficiary to HSL would be considered at the time of placement of order. The cost of spares quoted by the contractor will be considered " on not exceeding basis of total lumpsum cost mentioned in the BOQ'' for satisfactory completion of the specified SoW. Payment will be made at actuals on not exceeding quoted cost of this Serial (27) against OEM invoice.

Patel Engineering Works Vizag

JAMI HYDRAULIC

VOYAGER MARINE SERVICES INDIA PRIVATE LIMITED