Details: charges for completely cleaning the inner surfaces of the valve, taking the measurements of the seat wedge, removing the valve body seat by grinding/gouging, if cracks were observed it has to be grounded /gouged to the root and preparing the surface of welding for one side of the valve seat including the cost of hire charges for special equipments, t&ps and consumables etc., charges for preheating the valve seat area with indirect electrical heating coils at a controlled rate of 50°c per min up to 350°c by measuring and preparing a suitable cylindrical insertable support for wounding over the heating coil for inserting in to the valve seat area, continuously monitoring the temperature with appropriate temperature measuring device including the cost of hire charges for special equipments, t&ps and consumables etc charges for building new seat at one side of the valve body by gas tungsten arc welding with er 209l weld wire for 2runs and by utilizing stellite 6 weld wire for 3rd, 4th & 5
Sector: Power Sector