tender for erection, commissioning and changing the instruments of turbine panel at tg floor 9 mtrs including fabrication & fixing of instruments tags during overhauling of unit no 13, btps, obra - cleaning & blowing by air of impulse lines 2 changing of ss root valves 3 changing spindle/gland of root valves 4 replace of 10mm hp/lp 3way mfold valves 5 replacement of needle/3 way ktk/forged body valve 6 replacement of adopter, nut & tails. 7 testing, calibration of pressure gauges 8 replace gauges/switches of pressure/temp 9 cleaning and painting of fd & pa fan sw 10 replacement/rerouting of impulse line