Rectification of Gaseous Chlorination System at Sindhap under Darjeeling Pumping Water Supply Scheme with source Balason .

Amount

Supply delivery of following spares of existing Gaseous Chlorination as per replacement :

Chlorine Gas Leak Detector Model 1610B with 1 No. Sensor.

Ejector Assembly, Capacity: 02 Kg/hr.

Safety Items Consist of: a) Ammonia Bottle with Torch – 2 nos. b) Residual Chlorine measuring kit – 1 no. c) Canister type gas mask – 2 nos. d) Safety shower with Eye wash – 1 no. e) Breathing apparatus set with Oxygen Cylinder (30 minutes duration) – 1 set f) Protective Gum Boot, gloves and goggles – 2 Sets g) Apron – 2 sets h) Weather Cock – 1 set i) Spare Canister for Mask – 2 nos.

Chain Pulley Block (Manually Operated.), Capacity: 2 TON.

Neutralization System Equipments: a) FRP Full Hood for Chlorine Tonners – 1 No. b) 4" PVC suction line connection FRP hoods to blower – 12 Mtrs. c) 4" PVC piping up to neutralization tank – 12 Mtrs d) FRP lined centrifugal blower with electric motor (Capacity 1000M3/hr. @500 MMWC – 1 No. e) Hose pipe for PVC Duct & blower connection – 3 Mtrs. f) 4” PP Diffuser in neutralization pit/Absorption tank – 1 No. g) 4” Manual Damper – 1 No.

FRP Cover with FRP Internal lining for Neutralization pit.

Lifting Bar Assembly Capacity : 2 TON.

16 mm ball valve

25 mm ball valve

Installation and commissioning of the components as described in sl. No. 1.01 to 1.09 as per technical specification including supply of all erection materials, providing dosing point on the rising main by making required size of hole, clamping, the dosing unit whole neutralization system, blowers, caustic solution etc including drawing power line to blower, exhaust fans leak detector with necessary earthing as per I.E. rules and commissioning the entire system as per Is-10553 (Part-I) including supplying and fixing of board indicating the following lines outside the chlorine gas dosing room: i) "CHLORINE GAS DOSING APPARATUS ROOM" ii) " SMOKING AND HANDLING NAKED FLAME PROHIBITED" iii) " ADMISSION RESTRICTED"

Supply and delivery of Submersible dewatering drainage pump of capacity 7.2 m3/hr. at a head of 8 Mt coupled with suitable 3ph motor 2900 RPM for recirculation of Gland Cooling Water of pump to Clear Water Sump.

Making suction and delivery line for above supplied (as in item sl no 3.00) dewatering pump by Supplying, fitting and fixing 50 mm dia GI pipe (ISI-Medium) with all necessary accessories, specials viz. socket, bend, tee, union, cross, elbo, nipple, longscrew, reducing socket, reducing tee, short piece etc. fitted with holder bats clamps, including cutting pipes, making threads, fitting, fixing etc. complete in all respect including cost of all necessary fittings as required,jointing materials and two coats of painting with approved paint in any position above ground. (Payment will be made on the centre line measurements of total pipe line including all specials. No separate payment will be made for accesories, specials. Payment for painting will be made seperately).

Construction of RCC sump chamber outside the pump house of dimension 1 ½ mtr x 1 ½ mtr and 1 ½ mtr depth for collecting gland cooling water by dismantling exist concrete, filling with silver sand, placing reinforcement concrete to complete the job for recirculation by dewatering pump as per direction of EIC.

Make: As per departmental approved vendor list circulated vide memo no. PHE/ IV/ 2277/W- 181-19 dt. 25.09.2019

Add GST @12% (CGST @6% + SGST @6%)

Add Cess @1%

R.N.S.TRADING

WEST BENGAL ENGINEERING CO.