WBPHED/EE/BMD/NIeT-3 OF 2025-2026/1

Amount

Supply and delivery of following items.

Supply delivery of all equipments for leak absorbtion system at Gaseous chlorination unit comprising of the following materials and as per specification given in NIeT.

FRP hood for 100 kg cylinder - 4 no

Flexible pipe for hood connection- 4 no

Centrifugal blower, 1000 m3/hr @ 600 mmwc (1W) -1 no

Drain pump for pit -1 no

4” UPVC pipe with fittings , 15 meters -1 lot

Drain pump piping, 2” - 1 lot

Evoqua make chlorine leak detector with single sensor -1 set

Sensor for leak detector

Diffuser for neutralization system -1 no

Control panel for neutralization-1 no

Cable and conduit for neutralization -1 lot

Make-As per approved vendors

Installation of the leak absorbtion system & neutralization system and other chlorine items as per sl no (1.1) by expert person in the existing field by maintaining the proper IS as per direction of EIC .

Surface Dressing of the ground in any kind of soil including removing vegetation inequalities not exceeding 15 cm depth and disposal of the rubbish within a lead upto 75 m as directed.

Excavation of soil for installation of Earth Electrode and filling & ramming. For Soft Soil

Earthing with 50mm dia GI pipe 3.64 mm thick x 3.04 Mts. long and 1x4 SWG GI (hot dip ) wire (4 mts long) , 13 mm dia x 80 mm long GI bolts, double nuts, double washers incl S & F 15 mm dia GI Pipe protection ( 1 mtr long ) to be filled with bitumin purely under the ground level and partly above ground level driven to the average depth of 3.65 Mts. below the ground level as below: By ISI-Medium GI pipe

Extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below Ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) CI hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, GI reducer including drilling of 46 nos.12 mm dia holes on the GI pipe

supply and fixing earth busbar of galvanized (Hot Dip) MS flat 25 mm x 6mm on wall having clearence of 6mm from wall including providing drilled holes on the busbar complete with GI bolts,nuts,washers with earthing

Construction of 2.5m x 1.5m x1.5m depth neutrilization pith

Surface Dressing of the ground in any kind of soil including removing vegetation inequalities not exceeding 15 cm depth and disposal of the rubbish within a lead upto 75 m as directed.

Earth work in excavation of foundation trenches or drain in all sorts of soil ( including mixed soil but excluding laterite or sand stone) including removing spreading or stacking the spoil with in a lead of 75 m as directed .The item includes necessary a) Depth of excavation for additional depth beyond 1,500 mm. and upto 3,000 mm. but not requiring shoring.

Filling in foundation or plinth by silver sand in layer not exceeding 150mm as directed and consolidating same by thorough saturation with water ramming complete including cost of supply of sand.

Single brick flat soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with local sand.

Brick work with 1st class bricks in cement mortar (1:4) (a) In foundation and plinth

(b) In superstructure, ground floor

Ordinary cement concrete (mix 1:1.5:3) with graded stone chips (20mm nominal size) excluding shuttering and reinforcement if any in ground floor as per relevant IS codes. i) Pakur variety

Plaster ( to wall, floor , ceiling etc.) with sand and cement mortar including rounding off or chamfering corners as directed and racking out joints or roughening of concrete surface including throating nosing and drip course where necessary (Ground floor).[Excluding cost of chipping over concrete surface] a) With 1:6 Cement mortar ( 25mm thick)

Neat cement punning about 1.5mm thick in wall. dedo, window sill floor etc Note- Cement0.152 Cum per 100sqm

Moveable Galvanized plain sheet Pit cover M.S.or W.I. Ornamental grill of approved design joints continuously welded with M.S, W.I. Flats and bars of windows, railing etc. fitted and fixed with necessary screws and lugs in ground floor.(i) Grill weighing above 10 Kg./sq.mtr and up to 16 Kg./sq. mtr.

Galvanised plain sheet works (excluding supporting framework) fitted and fixed with 6 mm. dia J or L hook-bolts and nuts, sheet-bolts, limpet and bitumen washers and putty with 150 mm. end lap & 50 mm minimum side lap complete. (a) In roof: with 0.63 mm. sheets.

Supply delivery arrd storage at site of caustic Soda Flskes as per IS-252-20L3 {@300 kg,/site}

Add: 18% GST

Add: 1% Cess

COMBINE ENTERPRISES (BID ID -6473528)

TAPAN KUMAR DEY (BID ID -6473492)