Breakdown maintenance works of HP LP valves and Safety Valves of Unit No 7 CTPS Kasimpur Aligarh

Amount

Servicing of feed line gate/control valves/NRV size: NB-250mm, NP-260Kg/cm2. Valves covered are BFD-17,18,19,20,21,22

Servicing of low load line gate & control valves size: NB-100mm, NP-260Kg/cm2. Valves covered are FD-15,16,23.

Servicing of Pneumatically operated S/H, R/H Attemperation control Valves & S/H, RH Spray Branch Block valves.

Servicing of SH Common block valve SD-1, RH Common Block Valve SD-6 at the inlet of SH & RH spray station, NP-254Kg/cm2 , Temp-239oC ( SD-1-NB-6"/4" & SD-6-Nb-2")

Servicing of Main isolating valve of main steam line (L&R)MS-73 & MS-74,Nb-244 mm,NP-260Kg/cm2.

Servicing of bypass valves of main steam valves- S-75,76,77,78, Nb-60 mm, NP-139 Kg/cm2.

Servicing of bypass valve of feed station, NP-186Kg/cm2.

Servicing of boiler drum safety valves at 44 meter elevation of boiler. Design Parameters:- SV1: Pr-158.2 Kg/cm2, Temp.-346oC, Size-2.5"/6" SV2: Pr-162.9 Kg/cm2, Temp.-346oC, Size-3"/6"

Servicing of electromagnetic relief valve. (ERV-1538VX-10W) Design Parameters:- Pr.-141.4 Kg/cm2, Temp.-540oC, size-2.5"/4"

Servicing of MS Line safety valve (SLSV-1740WD) Design Parameter:-Pr-145.0Kg/cm2, Temp-540oC, size-3"/6"

Servicing of safety valves installed on hot reheat and cold reheat line at about 42 meter elevation. Design Parameters:- i) CRH SV-5, Pr-41.9Kg/cm2, Temp.-359oC, size-3"/6" ii) CRH SV-9, Pr-42.7Kg/cm2,Temp.-359oC,size-3"/6" i) HRH SV-6, Pr-39Kg/cm2, Temp.-540oC, size-6"/8" ii) HRH SV-7, Pr-39.80Kg/cm2, Temp.-540oC, size-6"/8"

Servicing of Soot blower line safety valve installed at 42 meter elevation. Design Parameter:-SV-8, Pr-40.0Kg/cm2, Temp-420oC, size-1.5"/ 2.5"

Servicing of high-pressure valves & NRV's at different elevation of boiler from '0' meter level to 44 meter level Nominal Bore may vary from Ф10 mm to Ф100 mm.

Replacement of following size valves

15 mm to 25 mm valves

40 mm to 50 mm valves

Servicing/replacement of Pneumatic/manual Valves of oil station at AB/CD Elevation.

Servicing/replacement of Oil line valves & NRV's of oil station at AB/CD Elevation of boiler.

Servicing of Pneumatic operated control Valve size NB 40 to 100 mm at different floors of boiler from '0' meter level to 44 meter level.

Servicing of hand operated Valve/NRV of size NB 40 to 300 mm at different floors of boiler from '0' meter level to 44 meter level.

Changing flange gaskets of valves and flange at different floors from '0' meter level to 44 meter level of boiler. Rate should be quoted per mm basis.

Replacement of gland packing with new one from valves leaking from gland. Rate should be quoted per mm basis.

Attending leakages of pipeline and headers etc of main boiler by cutting, grinding and HP welding of damaged portion or putting new spools/bends if required.

Replacement of startup vent (S/H), at 44-mtr elevation.

System line up for filling of feed water through LP drains & pressurization of pressure parts of Boiler through feed pump for hydraulic test of boiler. Normalization of the same after hydraulic test and making system for Lit-up.

Replacement of high pressure Valve/NRV of following sizes at different elevation of main boiler.

50mm to 100mm

250mm and above

Servicing/Overhauling of electrically driven steam valve dia-up to 100mm.

Servicing/Overhauling of electrically driven steam valve dia-100mm to 250mm.

Replacement of HP Drains pipe of any size, thickness of pipe more than 6mm. Rate per joint.

M/S UNIVERSAL ENGG.CO

M/S Golden Engineering Works,