Supply Of Dredge Equipment Jobs Of Dci Dredge Xv At Cksru, Kolkata. For Repair Vessel Dci Dredge Xv Whic 1 a Both port and Stbd turning glands to be dismantled from suction pipes.Both port and Stbd turning glands to be opened and as per instructions of ship staff, guide ring and wearing rings to be built up and ground. Ship supplied seal ring to be renewed. After overhauling complete turning gland to be fitted back in position. If required, a coat of plastic carbide to be applied. Pitting inside the turning gland to be built up and ground as per CSL / ship staff instruction. 2.00 NOS 2 a Pipe Portion of the arm piece to be renewed as per UT gauging. 800 ID, 16mm thick. 300.00 KGS i) Pins 8.00 NOS ii) Bushes 16.00 NOS c Thinned down portions of gimble rings to be built up. 60.00 KGS 3 a All four draghead and intermediate gantries to be dismantled and kept ashore for inspection. To be fitted back after repairs. 4.00 NOS b All four gantry heel pins to be built up, if required, and bushes to be renewed. (Bushes ship supply) 8.00 NOS c All four-gantry tumbler blocks to be dismantled, pins to be built up, if required and all greasing arrangement cleared, and boxed back. Bush to be renewed, if required. (Bushes contractor supply) 4.00 NOS d Choked / damaged greasing line arrangement to be cleared and made good. 10.00 MTRS e Line boring on gantries heel pin housing. 2.00 NOS 4 a Both P & S suction bend gantries to be dismantled and kept ashore for inspection. 2 sets Gantry heel pins and top pins are to be checked for wear and tear. To be fitted back after repairs and suction bend gantry to be tried out and checked for proper alignment. 2.00 NOS b Worn out pin /shaft to be renewed / reconditioned to original size. Bush housing and cover to be built up and ground to original size. 20.00 KGS c Greasing arrangements for heel pins and bushes to be cleaned and made good. 20.00 MTRS d Suction bend gantry lower bearing cups to be opened up and bearing bush to be renewed. (each side 02 nos A frame bush, 02 Nos. H frame bush, top 02 nos. top bush)- Spares ship supply 12.00 NOS SCOPE OF WORK TURNING GLAND (Size: 800 mm ID): GIMBLE RING, ARM PIECES: DRAGHEAD AND INTERMEDIATE GANTRY: SUCTION BEND GANTRY PORT AND STARBOARD: SR4/Dredge Eqpt/DredgeXV/CKSRU Encl 2 All bush and pin to be renewed on both port and Stbd gimble ring. (Bush and pins are Ship supply) and locking in position. b e Greasing line for top pins & bushes and A- frame pin & bushes to be cleaned and made good 20.00 MTRS f Line Boring on gantries heel pin housing. 2.00 NOS g Service frame 6 mm U channel to be cropped and renewed 1.00 TON h Service frame pin and bush to be renewed and after renewal to be tried for alignment (Pins & bushes Ship supply). 12.00 NOS 5 a Dismantling and removing the 800 NB pipes 16 mtr long (apx) from position with 2500x2500 gimble ring and 2500 mm long hose, fork arms, jet pipes and suction bend & jet hose etc to be dismantled from the pipe and to be kept on deck side/transported to workshop. After repairs (to various items) to be fitted to original position on deck including pipe sections, suction pipe to be assembled with turning gland, gimble ring, fork arms, flexible hoses etc. 2.00 SET b 2 Nos. wearing rings (inner & outer) (contractor supply) to be renewed on both port and starboard slides as per instructions. 2.00 NOS c Worn out areas of slides to be built up including studs area, as per instructions and wearing plates (contractor supply) to be renewed as per instructions. 100.00 KGS d Wedge pieces top & bottom (ship supply) to be renewed along with the rod as per instructions. 4.00 NOS e Suction Bend arm piece bush and pin to be renewed. Spares contractor supply. 4.00 NOS f Both port and starboard suction bends pipes to be coated with a layer of plastic carbide for protection. 10.00 KGS g Suction bend pipe rotating gland collar to be built up to size. 120.00 KGS h Jet Manchet & Spacer ring to be renewed. Spares contractor supply. 2.00 NOS 6 a Pulley dia 710mm approx 2.00 NOS b Tumbler block 710 dia pulley 2.00 NOS c Pulley dia 450 mm approx. 2.00 NOS 7 SUCTION TUBE, SLIDE AND SUCTION BEND: GANTRY PULLEYS (sheaves): Following pulleys are to be removed from the place, after removing locking plate. Pins and bushes are to be removed. After inspection/ Calibration of the pin and bush, pulleys are to be fitted back with new/reconditioned pin and bushes. Locking plate to be welded. Greasing Lines/passages to be cleaned and made good. (New pins & bushes contractors supply) HYDRAULIC CYLINDERS: Hydraulic cylinder to be disconnected from place by removing all connection and shift to workshop, dismantle, clean, inspect and overhaul. Piston seals, bucket and gland seals to be renewed from ship supplied spares. Hyd cyl to be gauged and report to be submitted. Rams to inspect and gauge. Chrome plating to be done as required. Hydraulic cylinder end swivel bearing to be renewed with ship supplied spares. Cylinder body to be chipped, cleaned thoroughly and apply with 2 coats of paints (paint contractor supply). Upon boxing back, hyd cylinder to be pressure tested and satisfactory trials to be shown to ship staff. a Port & Stbd draghead gantry 2.00 NOS b Port & Stbd Intermediate gantry 2.00 NOS c Port & Stbd Suction Bend gantry 2.00 NOS d Bottom door Hydraulic cylinders 4.00 NOS e Port & Stbd wire tensioner swell compensators 4.00 NOS f Overflow duct cylinder 1.00 NOS g Chrome plating (Approx 100 micron) on Hydraulic Rams of various hydraulic cylinders. 20.00 SQ. MTR 8 a Port & Stbd (Dg Hd, Intrmdt, Suc Bend) Hyd Winches including brakes and hydraulic motors are to be dismantled, overhauled, inspected and assembled back with new seals, bearing, etc. (ship supply) including removal and fitment. 3.00 NOS 1 2 3 4 5 6 7 8 9 10 11 12 13 Seal & Signature of authorised person Technical Requirements - Overhauling of dredge equipment All required measuring equipments, torque spanners etc shall be arranged by contractor. Valid calibration documents of the said tools shall be witnessed by CSL-QC. HYDRAULIC WINCHES: MAKE HYTOP HYDRAULIC Work to be completed within 40 days from the date of receipt of LOI/WO All above elements shall be quoted considering including staging, clamp removal and refitment, in way jobs and assembling back with new spares / dismantled parts , and to show satisfactory trials as applicable in each case above. All welding/cutting equipments shall be meeting the required yard safety standards. Firm should have longtime experience in successful overhauling of similar dredge equipment. Procedure given in technical manual shall be followed for dismantling, overhaul, assembly, testing and commissioning. All the in-way jobs whether specified or not are to be undertaken by the refitting contractor within the quoted price. Consumables like grease, plastic carbide, varnish, welding electrodes, nuts, bolts, washers, gaskets (nonasbestoses), studs, cleaning cloth, cleaning liquids, lub-oil wire brush etc are to be included in the quoted cost by the contractors
