bids are invited for running maintenance of plc system running preventive and breakdown maintenance of plc control system with electrical drives all control and instrumentation system of ash handling , replacement new erection of impulse line , replacement new erection of instrument fitting adopter nut tails elbow connector etc , overhauling b 501 and b 601 ss cock valve , overhauling repairing of junction boxes , servicing recalibration erection of fuzi yokogava rosemount etc transmitters , overhauling and recalibration new erection of digital indicators , overhauling and recalibration erection of flow meter conductivity meter , complete overhauling erection of level switches , replacement of pressure switch gauge vibration switch , removal testing erection commissioning calibration of temp gauges switches thermocouple , replacement erection overhauling cleaning of union isolating valveforged body valve , blowing of tapping points of different pressure transmitters switches , fabrication repairing of instruments plateform , laying patrolling of instrumentation cable , servicing and maintenance of air conditioner , cleaning of control room plc system , repairing of ups - repairing servicing of ups and float battery charger installed in plc system of ash handling system , service replacement of faulty butterfly valves along with act , servicing replacement of faulty diaphragm type valves , changing spindle gland of root valves , cleaning blowing by air of impulse lines , attend leakage from steam water air line , replace gauges switches of pressure temp , testing caliberation of pressure gauges , testing calibration of pressure switches , testing calibration of temp gauges , testing calibration of temp switches , replacement of thermocouples , cleaning servicing of terminal block in compressor house swas system , changing of ss root valves , servicing of 10mm hp lp 3way manifold valves , replace of 10mm hp lp 3way mfold valves , removal choking replace of impulse line , erection replacement of pvc armored compensate cable , replacement of universal digital indicator , servicing replacement of faulty 4way valve with actuator , replacement remounting of smps 24 v dc - dismentaling replacement remounting of smps 24 v dc , dismantling replacement of combination timerof compressor , servicing of s ling cooler dhx18 sco2 , servicing of s ling cooler dhx12 sco2 , servicing of s ling cooler dhx06 sco1 , miscellaneous mechanical febrication , maintenance of actuator of butterfly valve , maintenance and upkeep of terminal box of motor of actuators in cw pump , maintenance re erection of butterfly valve actuator motor , revisioning and upkeep of marp dcs panel , revisioning testing of various type of switches of local control panel , maintenance revisioning upkeep and testing of 415 v power supply module , maintenance upkeep and repair of junction box of butterfly valve , servicing of mov motors actuators and limit switch assembly , checking cleaning and cable dressing mov motor , overhauling cleaning reconditioning of various size batteries , load test once in six months for various size battery of ups installed for 5x200mw , replacement of damaged switches mcb in acdb panel , cleaning painting of the wooden battery stands , maintenance of window type split type ac , gas charging of ac , rewinding of burnt fan motor total quantity : 3386