PROPELLER SHAFT REPAIRS ON INS NISTHAR

PROPELLER ROUTINES ON INS NISTHAR

PORT AND STBD. PROPELLER SHAFT DROP TO BE TAKEN AND RECORDED (BEFORE/AFTER).STERN OIL FROM BOTH THE STERN TUBE TO BE DRAINED AND NEW OIL TO BE TAKEN IN (SHIP SUPPLY).REQUIRED EYE PADS TO BE WELDED FOR WITHDRAWAL OF SHAFTS.CLEAN AND POLISH PROPELLERS( TO BE DONE SOON AFTER DOCKING),CARRY OUT VISUAL CHECK OF ALL EXTERNAL BOLTS LOCKING STRIPS AND WIRE.RENEW LOCKING STRIPS IF REQUIRED.

REMOVAL OF TAIL SHAFT ,INTERMEDIATE SHAFTS :PROPELLER SHAFTS (P & S) ARE TO BE DECOUPLED USING HYDRAULIC POWER PACK WITH SUITABLE MARKINGS ON SLEEVE/MUFF COUPLINGS , WITHDRAWN COMPLETELY FOR INSPECTION. AFTER DP/MP TEST ON BEARING AREAS AND SERVICING, SAME TO BE FITTED BACK IN POSITION INCLUDING COUPLING, AFTER INSPECTION / SURVEY. PROPELLER SHAFT FWD & AFT LINERS/BUSHES & SHAFT TO BE CALIBRATED, RENEWED AS REQUIRED . SATISFACTORY TRIALS TO BE SHOWN.PROPELLER SHAFTS NDT TO BE CARRIED OUT BY QUALIFIED LEVEL-3 TECHNICIAN IN PRESENCE OF IRS. NDT TECHNICIAN DURING CLASS INSPECTION TO BE ARRANGED BY THE VENDOR ALONG WITH NECESSARY CONSUMABLES LIKE DP TEST KIT,MP SPRAY BOTTLES ETC.STERN BUSH AND SHAFT TO BE CALIBRATED AND REPORT TOBE SUBMITTED .CALIBRATED TOOLS TO BE USED FOR ALL MEASUREMENTS.CERTIFICATES TO BE PRODUCED. REQUIRED CHAIN BLOCKS,LIFTING BELTS,SLINGS,HYDRAULIC POWERPACK & JACKS, OF SUITABLE CAPACITIES WITH LOAD TEST CERTIFICATES ONLY TO BE USED AND THE SAME ARE TO BE PRODUCED.SLEEVE COUPLING/MUFF COUPLING TO BE OVERHAULED.ALIGNMENT READINGS TO BE RECORDED (BETWEEN GEAR BOX AND SHAFT) BEFORE AND AFTER SHAFT ROUTINES.

STERN TUBE FWD & AFT BEARING BUSHES TO BE RENEWED (BEARINGS HSL SUPPLY) (BUSHES TO BE MACHINED TO MATCH THE INTERFERENCE FIT). MACHINING OF BUSHES IS VENDOR SCOPE.CONSUMABLE REQUIRED DURING FITMENT OF BUSHES VIZ.,DRY ICE ,STUDS ARE TO BE ARRANGED BY VENDOR.JACK LOAD TEST OF BEARINGS TO BE CARRIED OUT AND REPORT TO BE SUBMITTED .

JACK-UP LOAD TEST OF BEARINGS (STERN TUBE BEARINGS,PLUMMER BLOCKS,STUB BEARINGS) TO BE CARRIED OUT AND REPORT TO BE SUBMITTED .NECESSARY ARRANGEMENT FOR JACK -UP LOAD TEST TO BE ARRANGED BY VENDOR.ANY CORRECTION TO BRING TO ORIGINAL LOADING CONDITIONS BY ADDING SHIMS TO BE DONE BY THE VENDOR PERFORMING THE TEST.

PROPELLER SHAFT LINE SIGHTING TO BE DONE FROM MAIN ENGINE GEAR BOX TO A-BRACKET BEFORE AND AFTER FITMENT OF STERN TUBE BUSHES USING LASER BY COMPETENT PERSON.REQUIRED LASER SIGHTING ARRANGEMENTS BY QUALIFIED TECHNICIAN WITH CALIBRATED INSTRUMENTS TO BE ARRANGED BY VENDOR.THE SAME TO BE OFFERED TO CLASS/NAVAL AGENCIES

CORRECTION OF SHAFT LINE TO BE CARRIED OUT TO ACHIEVE PROPER ALIGNMENT OF PROPELLER SHAFT.NECESSARY MACHINING /REAMING/DRILLING OF HOLE TO SHIFT THE SHAFT LINES TO BE CARRIED OUT BY VENDOR.REPORTS TO BE SUBMITTED.

INSPECTION OF PLUMMER BEARINGS ON EACH SHAFT LINE FOR SCORING/CORROSION BY OPENING THE COVERS.TO BE THOROUGHLY CLEANED AND GREASE TO BE FILLED.FRESH GREASE TO BE FILLED.HIGH HEAT RESISTANT GREASE TO BE SUPPLIED BY VENDOR AT NO ADDITIONAL COST.

RENEWAL OF PLUMMER BEARINGS(BEARINGS HSL SUPPLY).FRESH GREASE TO BE FILLED.HIGH HEAT RESISTANT GREASE TO BE SUPPLIED BY VENDOR AT NO ADDITIONAL COST.

CARRY OUT SR ROUTINES OF BULKHEAD GLANDS. (MAINTOP - 27428)AN INSPECTION BE CARRIED OUT EVERY TWO YEARS OR DURING THE SHAFT SURVEY PERIOD WHEN THE DIAPHRAGM EXAMINED FOR EVIDENCE OF WEAR.