Operation and Routine Maintenance of Recovery water

A) Operation (Mechanical & Electrical):

Charges for carrying out operation activities of both Mechanical & Electrical in Ash water Recovery pump house consists of Ash water recovery pumps - 3Nos, Strainers - 2Nos, 5Ton capacity hoist, 2Nos recovery water pipe line from Ash Recovery pump house to sea water sump, Electrical equipments and its related panels etc., situated at 4Kms away from NCTPS-II site.

B) Mechanical Maintenance:

Charges for carrying out routine maintenance works at Ash water Recovery pump house (4Kms away from site) like cleaning the pump house area in and around, up keeping of equipments by attending minor oil & water leaks, replacing of worn-out/damaged gland ropes, alignment if any etc., including cost of consumables and T&Ps hire charges.

Arresting of sleeve coupling leaks, Cast basalt pipe leaks in Recovery water pipe lines at various locations by changing the damaged 'O' rings/End collar after lifting the pipe, supporting, dismantling the sleeve coupling joints and arresting leaks by providing new 'O' rings/End collar/Cast basalt pipe including cost of consumables and T&P's hire charges. (Necessary End collars/Cast basalt pipe will be supplied by TNPGCL If necessary).

Replacement of damaged gasket in flange joints of recovery water pipe line for attending flange leaks by providing new one after removing/cutting the damaged/corroded fasteners, cleaning the flange surface, providing and fixing of new gasket in flange joints, tightening of fasteners, checking the alignment and arresting leaks if any, including cost of consumables and T&P's hire charges.

C) ELECTRICAL MAINTENANCE:

Charges for Carrying out Daily Maintenance for condition monitoring and External cleaning in Ash water recovery system including such as LT Switch gear Panels, Modules, 500KVA Transformer, 4Pole structure and providing daily reports about LT circuit breakers, LT modules, Local panels and other relevant equipments etc., including cost of consumables and T&Ps hire charges.

Charges for carrying out Bi-monthly maintenance of Distribution Transformers such as tightness checking, oil level checking, top up of oil if necessary and replacement of silica gel, checking earth connection etc., Routine checking of HT cable route & termination and maintenance of 4 pole structures including 3 no's AB switch alignment checking and applying jel.etc., in Ash water recovery pump house including cost of consumables and T&Ps hire charges.

Charges for carrying out checking the condition monitoring of mechanism & lubrication of LT Breakers & Modules, maintenance in Motors 7.5kw & above 7.5kw such as Terminal Tightness checking, IR value checking, winding Resistance value checking and Meggering of Motors, attending minor repairs & defects handling of equipments etc., if required applying of Grease and maintenance in 40m High mast light (12Nos of 2X400w HPSV) fittings such as cleaning, applying lubricant to rope and checking circuit connection in Ash water recovery pump house including cost of consumables and T&Ps hire charges.

Charges for carrying out defective replacement of light fittings, shades, glass, ballest and other related accessories of various rating like 70W, 125W, 250W, 400W & TFL fittings are in Ash water recovery pump house below 6m height, including cost of consumables and T&Ps hire charges.

Charges for renewal of jumpers/binding replacement of failed insulators in 4 pole structures, including cost of consumables and T&Ps hire charges.

Charges for attending breakdown maintenance in 11kv line such as sectionalizing by opening AB switches, removing jumpers, providing fuses and declaring fault section, including cost of consumables and T&Ps hire charges.