ROLLER REPAIRS AT BOPL TCB II

REPAIR OF ROLLER SUPPORT 11577-MPSPL PIPELINE — REPAIR OF ROLLER SUPPORT ON BLACK OIL PIPELINE (BOPL) UNDER TCB-II. JOB INCLUDES ALL MECHANICAL WORKS INCLUDING LIFTING OF PIPE TO MAKE ROLLERS LOAD FREE, REMOVING OF ROLLERS, SERVICING OF BEARINGS, CUTTING OF SUPPORT FRAMES, WELDING OF SUPPORT FRAMES AND PAINTING OF ROLLERS SUPPORT STRUCTURE. THE DETAIL SCOPE OF JOB WILL BE AS PER ATTACHMENT.

VULCANISATION OF ROLLER — VULCANISATION OF ROLLER: JOB INCLUDES SCRAPPING OF EXISTING RUBBER, APPLICATION OF RUBBER SOLUTION, RECOATING OF POLYURETHANE WITH COATING THICKNESS OF 5-6 MM ON EXISTING MS ROLLER, GRINDING & FINISHING OF ROLLER, TO & FRO TRANSPORTATION OF ROLLERS FOR VULCANISATION. THE DETAIL OF JOB WILL BE AS PER ATTACHMENT.

SPLY & FAB OF STRUCTURAL — STRUCTURAL STEEL: SUPPLYING, TRANSPORTING, FABRICATION, LOADING, UNLOADING, ERECTION AND PAINTING IN POSITION TO THE REQUIRED LINE AND LEVEL MADE OUT OF MILD STEEL STRUCTURAL SECTIONS FABRICATED FROM MILD STEEL PLATES/ANGLE/CHANNEL/GRATING/FLAT FOR PROVIDING SUPPORTS AND FRAME WORK. THE RATE QUOTED SHALL INCLUDE COST OF BOLTS, NUTS, WASHERS, WELDING AND ELECTRODES AND ANY OTHER CONSUMABLES REQUIRED FOR COMPLETING THE WORK. NUT BOLTS SHALL NOT BE CONSIDERED FOR PAYMENT. THEORETICAL WEIGHT OF STEEL SECTIONS SHALL BE CONSIDERED FOR PAYMENT. PAINTNG OF STRUCTURAL STEEL INCLUDES PROVIDING AND APPLYING AT ALL ELEVATION OF THE MEMBER WITH TWO COATS APCOTHANE CF674 (30 MICRON EACH OF APPROVED COLOUR) OVER TWO COATS OF RUSTOCAP ALUMINIUM PRIMER (100 MICRON EACH) APPROVED MAKE OR EQUIVALENT WITH PRIOR APPROVAL OF ENGINEER-IN-CHARGE.

BRG UNIT,BALL — BEARING UNIT; TYPE:BALL BEARING; MAT,HOUSING:CAST IRON; DESIGNATION:UCFL 210; DIAMETER,SHAFT:50 MM; MANUFACTURER: NTN, FOR THE ROLLER SUPPORTS OF BLACK OIL PIPELINE AT THANE CREEK BRIDGE-II, THE BEARING HOUSING SHALL BE USED FOR THE REPLACEMENT OF THE FAULTY BEARINGS DURING THE SERVICING WORK OF ROLLER SUPPORT, PLEASE NOTE THAT INSTALLATION OF BALL BEARING HOUSING IS ALREADY INCLUDED IN ITEM NUMBER 1/ITEM NUMBER 5, ALL OLD BALL BEARING HOUSING, WHICH ARE REPLACED BY NEW BALL BEARING HOUSING, ARE REQUIRED TO BE SUBMITTED TO MOV-1 BY THE CONTRACTOR

SERVICING OF ROLLER — ROLLER SERVICING AND ROTATION: SERVICING OF ALL 305 BOPL APPROVED MAKE ROLLERS WHICH INVOLVES SIMULTANEOUSLY AND UNIFORMLY LIFTING OF PIPELINE WITH THE HELP OF TWO JACKS ON EITHER SIDE OF THE ROLLER UNDER SERVICING AND ROTATING THE ROLLER THE CLOCKWISE AND ANTI-CLOCKWISE DIRECTION FOR THE FREE (WITHOUT RESISTANCE) MOVEMENT. LOCATING AND ORIENTING THE OPENING FOR GREASING OF THE BEARING ASSEMBLY ON BOTH THE ENDS OF THE ROLLER (DRILLING HOLE TO I SECTION IF REQUIRED). CLEANING WITH SOLVENT AND GREASING BOTH THE BEARINGS OF A ROLLER WITH APPROVED MAKE GREASE RECOMMENDED BY APPROVED MAKE JAPAN.ROTATING THE ROLLER BY 90 DEGREES ANTI CLOCKWISE FROM THE ORIGINAL POSITION AND MARKING THE NEW POSITION WITH PAINT ON THE ROLLER FOLLOWED BY SIMULTANEOUSLY AND UNIFORMLY REMOVING THE JACK FROM BOTH THE SIDES OF THE ROLLER AND ALLOWING THE WEIGHT OF THE PIPELINE TO BE TAKEN BY THE SERVICED ROLLER.IF ANY BEARING DURING ROLLER SERVICING FOUND IN NONWORKING CONDITION, THEN CONTRACTOR WILL REPLACE THE BEARING HOUSING AND NO EXTRA PAYMENT SHALL BE MADE FOR THIS. HOWEVER SUPPLY OF BALL BEARING HOUSING INCLUDED IN ITEM NUMBER 4 (SUPPLY OF BALL BEARING HOUSING).