Dry-Dock repair of CSD Alaknanda at Kolkata (NW-1) for the year 2025-26

Amount

Blocking and unblocking including mooring charges for inspection then repair of vessel. Blocking to be done in sufficient height for underwater inspection, scrapping, chipping, wire brushing, cleaning, repairing and painting etc. Unblocking in suitable site as required as per direction of EIC/Surveyor.

Ultrasonic thickness gauging to be done of hull/bottom shell, deck plate & LWL ship side plate, etc. for checking of thickness and test report to be submitted. The same will done through IRS approved TM firm as required as per direction of EIC/Surveyor.

Cropping & renewal of damaged/wasted under water, deck plate, air vents, brackets, angles, stiffeners and inside tanks plating etc as required after ultrasonic testing & its report as required as per direction of IWT Surveyor/ EIC. (i) Class certificates to be submitted in original for all materials used for repair. Alternately, check testing of the material to the attending IRS surveyor's satisfaction to be done) (ii) IRS approved welding procedures, welders and consumables shall used in repair. (iii) IRS approved firm shall done non destructive test of the repair(UT/RT), as required as per recommendation/direction of EIC/Surveyor.

Under water hull plate & side plate to be scraped & chipped & wire brushed from keel to LWL to remove fouling and paints and made suitable for inspection / painting. Painting of hull plate & side plate to be done by 3 coats (1 coat primer & 2 coat paint) from keel to water level as required as per direction of IWT Surveyor/ EIC.

Chipping, wire brushing and cleaning inside of tanks and space with all interior item like angle & frame etc. to be done with one coat of primer followed by two coats of existing color anti- corrosive marine, as required as per direction of EIC /Surveyor

Checking of Cathodic Protection Anodes {(a) dimension 530x150x30, wt 4.5 kg, qty: 19 (b) dimension 400x90x40, wt 2 kg, qty: 14} as per arrangement and replaced the damaged anode as required as per direction of EIC/ surveyor

Labour Charges

Cost of spares/material (Actual +10%)

Sea chest, mud box and strainer to be opened, cleaned and boxed back after renewal of gasket and SS nut bolt etc as required as per direction of EIC/Surveyor.

Labour Charges

Cost of spares/material (Actual +10%)

OBD valves to be pressure tested and all valves to be overhauled as required as per direction of EIC/Surveyor.

Labour Charges

Cost of spares/material (Actual +10%)

Cleaning and painting of bilges with one coat primer and 2 coats of marine quality paints as required as per direction of EIC/Surveyor.

Spud Tilting mechanism found non opeartional, same to be rectified & Spud carriage guiding wheels (08 in nos.) to be removed (consisting of earlier removal of hydraulic cylinder, center spud and spud carriage assembly) and bush changing with phosphorous bronze bushes, shaft machining & 12 mm end plate fitment including gas cutting/ welding. Arrangement of crane for the removal of Spud carriage unit and fitment back as per existing design (approx. weight 10 Tons) for smooth dredging operation as required as per direction of EIC/Surveyor.

Labour Charges

Cost of spares/material (Actual +10%)

Dredge pump is to be dismantled along with impeller, inspection cover and related pipeline. Thrust bearing block to be inspect and serviced. Checking of seal and renewed, checking of bearing seal and replace. Other fittings also to be opened and the same to be refitted back in position after proper alignment and check as required as per direction of EIC/Surveyor.

Labour Charges

Cost of spares/material (Actual +10%)

Box keel coolers of maine engine{(01 heat dissipated capacity:564KW)02.(Hydraulic/Gear oil plate heat exchanger head dissipated capacity : 344.2 KW)} & Auxiliary engine(heat dissipated capacity : 295 KW)} to be taken out, then tube checking, if damage replacement of tubes then pressure tested. Same to be fitted back after servicing (the inner coolers of main & Aux eng to be pressure tested 1.5 times of working pressure approx. 10 bars) as required as per direction of EIC/Surveyor

Labour Charges

Cost of spares/material (Actual +10%)

Life raft to be serviced as per standards and statutory norms as required as per direction of EIC/Surveyor.

Labour Charges

Cost of spares/material (Actual +10%)

Gland cooling pump attached with main engine observed abnormal noise to be serviced in all respect as required as per direction of EIC/Surveyor.

Labour Charges

Cost of spares/material (Actual +10%)

Emergency fire pump found nonfunctional and Control room dredger vacuum pump meter nonfunctional; both has to be rectified/renewed as required as per direction of EIC/Surveyor.

Labour Charges

Cost of spares/material (Actual +10%)

NALANDA ENGINEERING ENTERPRISE (BID ID -3223333)

GHOSH ENTERPRISE (BID ID -3227151)