AUGMENTATION OF COVERED SHED WINCH HOUSE AND SLIPWAY AT DRYDOCKS ND

Consultancy, design and execution for proposed cofferdam around the existing slipway duly vetted by any IIT/NIT to facilitate execution of repair/ replacement of work covered under schedule 'A' Part-II to Part -VII as under:- (i) Replacement of above water/under water rails of slipway total 2400 RM (Appx.) (32 Nosx75m) including base plates, fish plates, projecting bolts, rails in transition and inclined area including under water portion.

Item No. 1.1 (Contd....,) :- (ii) Slipway repairs are to be carried out after dewatering the area by installing suitable cofferdam / sheet pile structure and bailing out water using high discharge pumps etc. Silt deposited over the slipway slab to be removed and disposed off at designated locations. (iii) Necessary demolition of RCC/PCC below/around rails, removal of existing rails, fixtures, bolts, plates etc. to be carried out. (iv) Structural members to be checked for integrity, any structural damages, crack, spalling etc. duly vetted by team of IIT/NIT and necessary structural repairs as necessary to be carried out as per methodology given by IIT/NIT inspection team. (v) New bolts are to be installed by drilling into slipway slab and fixing with lock fix chemicals/grouts, fixing new rails on base plates with necessary clamps, fish plates and other accessories, provision of sacrificial anodes along the length of rails for corrosion protection. (vi) Laying of necessary wiring/connections and connecting with existing ICCP panel including replacement of ICCP panel components as required for making the ICCP system fully operational, relaying PCC/RCC as required to encase the sides of rails as per original slope, alignment and profiles to match the existing rail system.