Annual breakdown / running maintenance of L.P. Valve, fabrication of bend, O/H of special H.P. valve and attending leakage from flange bonnet of H.P. valve/Pipe line and etc. work of unit no. 9, 10 , 11, 12 and 13 of 5X200 MW, BTPS, Obra

Amount

Overhauling of L.P. valve

Patch welding work to attend:

Leakage in L.P. Pipe, Size – 51 to 100mm

Leakage in L.P. Pipe, Size – 101 to 200/350mm, 200/300mm.

Fabrication of bend from L.P. Pipe:

Up to 50mm

Cutting welding for joints of L.P. pipe:

Up to 50mm dia.

51 to 100mm dia.

101 to 150mm dia.

151 to 200mm dia.

Attending the flange/ bonnet leakage of H.P. valve:

Up to 50mm

Attending the flange leakage of H.P. pipe:

Up to 50mm

Cutting / welding & replacement of L.P. Valve:

Up to 25mm

Overhauling of ‘U’ Bend valve i.e.-V2-20

Overhauling of isolating valve of PCV-5, 14 &17 valve i.e. V2 -16,18, V2-50(I,II) and V6-1 (I,II)

Overhauling of by pass line valve of PCV-5, 14 to 17 valve i.e. V2 -26 (I,II), V2-17, V2-51 V6-2

Overhauling of valve connected to deaerator at -13 meter V2-21.

Overhauling of suction valve of BFP / discharge valve of condensate pump, i.e. MC-11, 12 & 13. .

Overhauling of by pass valve of temperature control line valve, i.e. V2- 43, 45 and primary root valve of steam line.

O/H of suction valve of condensate pump i.e. MC-1, 2 & 3 / condensate line valve replaced to GC-1 (i.e. MC-18) , ejector (i.e. MC-19), LCV-15 (i.e. MC-20,21 & 37), LPH-1A,1B (i.e. MC-22,23 &24) and LPH (i.e.. MC-25 to MC-33)

I.P.T. transfer pipe line, heating line drain valve.

Fabrication of reducer for H.P Drip line, Size: 218 mm/80mm OR 168/80 mm.

Replacement of reducer of H.P Drip line by H.P welding technique.

L.P.H. drain line valve i.e. HD-8,9,14,15,16, 17, 18,19 & 20

Checking/inspection and rectification of fault of internal of deaerator.

Cleaning of filter of lub oil cooler of turbine & H2 gas cooling filter.

M/S ADITIYA VISHWAKARMA CONTRACTOR