Dredging, rock placing and concreting works for Existing Jetty and its associated structures at KKNPP.

Core materials graded, weighing 5-1000 kg stones

Armour stones graded, weighing 1000-3000 kg

Placing of Rock and core material in position including profiling. Shifting rock materials of various grades as below from stock yard including loading ,transportation and placing in open sea above and below water level and profiling the same at the work areas to lines and levels in break water dyke, shore protection bund and in any other structure as per drawings and as directed by NPCIL, including surveys, equipment like dumpers, dozers, excavators, cranes, manpower, surveyors, divers with all diving accessories, water, electricity, fuel, wastages, stock yard, and weigh bridges, payment of all statutory taxes, duties, royalties and levys , all as per construction drawings, technical specifications, contract conditions and as directed by NPCIL. i. Core materials graded, weighing 5-1000 kg stones ii. Armour stones graded, weighing 1000-3000 kg Note. 1.Royalty payment details shall be submitted with each RA bill. 2.The placing of rocks as per site requirement and immediatly any damage was noticed to the break water dykes structures as directed by the EIC.

Conducting Multi Beam batymetric surveys at harbour basin and navigation channel with suitable steel hull / FRB survey launch with suitable survey equipments and manpower etc. all whenever necessary and analysis of data, submission of signed charts / reports, including mobilisation & de- mobilisation of equipment, manpower all as per construction drawings, technical specifications, contract conditions and as directed by NPCIL. Note:This item is excluding regular bathymitric survey required for dredging work to confirm requred depth.

Casting of concrete block of size 1mx1mx1m using M30 grade of concrete as per approved mix design (with minimum cement content of 350 kg /cum) , including supply of materials, moulds, manpower, plant, equipment, consumables, all as per construction drawings, technical specifications and as directed by NPCIL. Note: The cost towards formwork , embedded steel/ rebars shall not be paid separately and shall be deemed to be included in the rate.

Supply of 1250 mm diameter Rotationally Moulded, virgin Polyethylene Navigational Buoys of SL-B1250 manufactured by M/s Sealite Pty Ltd, Australia or Equivalent with provision for fixing of solar marine lantern of model SL-60 and protective SS cage, Saint Andrews cross with all other accessories on top of the buoy, including mooring chain assembly of specified length Chain of 18 mm diameter, De–Shackle, swivel, ring, nut, bolt, fasteners etc. All SS items shall be SS 304 grade above. The logo of NPCIL & text character as specified shall be incorporated on buoy during manufacturing process. The supply shall be strictly conforming to technical specifications and drawings.

Installation of 1250 mm diameter of Buoys of SL-B1250 including fixing of solar marine lantern of model SL-60, fixing of protective SS cage around the lantern and fixing of Saint Andrews cross. The buoy shall be connected with mooring chain assembly including its accessories like De-shackle, swivel, ring, nut, bolt, hook, fasteners etc. The fully assembled buoy shall be connected to sinker weight concrete block of size 1mx1mx1m. The complete buoy accessories with sinker weight shall be installed in open sea condition at the precise locations as specified in the drawing, deploying suitable capacity of mechanized boat equipped with winch & chain pulley arrangement, GPS and safety gadgets etc to install the buoys at designated position without any damage to the whole buoy assembly. The marine operations shall be carried out by qualified diving team with all necessary breathing and safety apparatus etc, as per technical specifications and drawings and as per the instruction of Engineer-in-charge.

Providing & laying M35 Design mix concrete with cement content upto 370kg /Cum using 20mm and down graded stone aggregates, admixtures including Mixing, Ramming, Compaction, leveling, curing, placing at all lifts, including scaffolding and Finishing smooth all exposed faces complete as per specification.