annual repair and maintenance of various electrical installation and mechanical equipments at fire station, keshavpuram. ( sh sitc of real time online monitoring wqm system ) -design, supply, installation, testing and commissioning of wqm ( water quality monitoring system ) with real time online monitoring all the specified parameters as per bsi std for drinking water and have a check on the given parameters.wqm should be a skid mounted system comprising of ss storage sampling tank of 50 ltr capacity, circulation pump, control panel, interconnecting piping with all valves & fittings. system should be installed in parallel to the existing water supply line, it should take bleed from the water supply line and should reconnect to same line. sampling tank should have all the sensors attached to it to monitor the real time parameters. the sensors should be compatible to the local bms. the entire system of pump, tank and fittings shall be mounted on base plate and shall have structure frame to strengthen / balance the entire skid. the supplier shall comply all the specification. the system should be iso 9001:2015 and ce marked. the system shall be equipped with following feature and specification as under.system operationi ) sampling tank: - ss 316 mirror finished 50 l hold up volumeii ) valves: - manual valves and check valve to isolate the system from the main stream during maintenance. iii ) piping: - food grade pvc piping iv ) pump: - at the inlet of wqm for sucking water from main line, passing thru sampling tank and then sending it back to main line.v ) all component inside the tank shall be of ss316 l or higher grade materialelectrical control systemi ) electrical connection required: - 3-phase, 415 volt and 50 hzii ) single point termination should be required, all internal wiring shall be strictly factory fittedmonitoring and control facilityi ) the system shall have separate indicators for each parameter in the control panelii ) system should have waters ph value, tds ( total dissolved solids ) temperature sensor, orp ( oxygen reduction potential ) sensor.iii ) control panel should have pump on / off status. monitoringsensors featuresi ) ph sensor – resolution: 0.01range : 0 to 14phph accuracy: ± 0.01phcalibration: 2 point ( manual ) retransmission output : 4 to 20 ma isolatedii ) tds transmitter-range : 0 to 2000 ppm resolution : 1 ppm measuring accuracy : ±1%fsindication : 3.5 digit led display retransmission output : 4 to 20 ma isolatediii ) orp indicating controller cum transmitter systemrange : ± 2000 mvresolution : 1 mvaccuracy : ± 0.2% of full scalecalibration : soft key calibration – 1 pointaccessories and partsi ) ss tank-1 noii ) local control panel all indicators iii ) water pump- 1 noiv ) manual valve-suitable no’sv ) check valve- 2 no’svi ) ph sensor -1 novii ) orp transmitter- 1 noviii ) total suspended solid transmitter-1noix ) temperature sensor-1 no