OT 47/24-25

Amount

Charges for Removal of Pressure / DP switches and re-fixing them after calibration in Boiler, Mills and Fans areas.

Charges for Removal of pressure / DP transmitters including disconnecting the control cables, removal of clamps & manifold and re-fixing them after calibration in Boiler, Mills and Fans areas.

Charges for removing from field, transporting to lab, cleaning, handing over to lab for calibration, and re fixing after calibration of air regulator with gauges.

Charges for Removing and refitting of accessories in pneumatic control valves such as air lock relay, air regulators, positioner for testing, checking its healthiness and calibration of pneumatic control valves.

Charges for Removing, checking the healthiness and re-fixing of Temperature Element (RTD & thermocouples)

Charges for Cutting and welding of pipe size ½” impulse lines of mills, flue gas, primary and secondary air path including cost of gas, welding electrodes

Charges for dismantling, cleaning, checking and refixing of pneumatic actuator along with feedback indicators, including disconnecting and reconnecting the power cables, removal of clamps etc.

Charges for dismantling, cleaning, checking and refixing of limit switches, including disconnecting and reconnecting the power cables, cleaning of switch contact removal of clamps etc.,

Charges for dismantling, cleaning and refixing of pneumatic air metallic hose and instrument air impulse line.

Charges for releasing, cleaning and refixing of fiber optic flame scanner cable (4mtr length). After fixing the cable ensure the position of scanner lens inside the boiler furnace.

Charges for releasing the existing defective cable and laying of new cable inside the seal air header pipe for coal mill Roller bearing temperature measurement RTD.

Labour charges for fabrication and Erection of catch pot arrangement for all mills DP, PA flow to Mill and secondary air flow measurement impulse lines

Charges for removing the actuator and its positioner with accessories, transport from field to lab and servcing of actuator which involves (i) Dismantling of actuator, rack and pinion assembly, replacement of defective seals with new seals. (ii) Assembling of actuator with its accessories (iii) Actuator healthiness checking by Air tightness test and re-fixing of actuator and its positioner with accessories for hot/cold PA actuator and its power cables at 15mtrs elevation.

Charges for Reconditioning the defective Thremowell for temperature measurement.

Charges for Erection of new Junction Box (Size - 12 inch (l), x8 inch (h), x 4 inch (w) in 18 Gauge MS sheet) in Boiler Burner “A”, “D” layer including removing, refixing of SOVs, Limit switches and laying of its power cables for HFO/LDO/Igniter Cylinders.

Charges for Servicing of defective igniter rod tips.(670mm Igniter rod along with 175mm split front spark tip)

SARVESWARASAMY AND CO