manufacture and supply of horizontal centrifugal radially split twin casing design slurry pump for ash water recirculation system for btps , obra , horizontal centrifugal radially split twin casing design slurry pump fitted with mechanical seal ( as per tender specification ) technical specification:minimum flow: 550m3/hr , minimum head: 36-37 mwc , pump efficiency: minimum 70% , slurry specific gravity: 1 . 05 , pumped liquid: coal ash contaminated water , pump should be radially split design for ease of maintenance & with replaceable liners . material of construction:impeller: ultra chrome/high chrome material having minimum 27% chrome conforming to astm a 532 griiia , hardness range of minimum 600-650bhn typ , shaft sleeve: cf 8m confirming to astm a 743 . shaft: en 8d carbon steel confirming to bs 970-1955 , casing: ductile sg iron gr 500-7 confirming to is1865 . mechanical seal: mechanical seal should be suitable for slurry application not for clear water . mechanical seal should be reputed make: eagle burgmann or flowserve make only . mechanical seal should be fitted with self-lubrication device ( sld ) . seal should be supplied with sld since clear water for seal flushing shall not be available at site . electric motor: lt motor specifications:-1 . type: tefc squirrel cage induction motor of reputed makes like: marathon/abb /siemens or equivalent . 2 . motor kw: maximum 110kw , 4 pole for main pump & 5 . 5 kw/4p for vacuum priming system . 3 . voltage/frequency: 415 v ac / 3phase / 50hz , 4 . degree of protection: ip - 55 , 5 . method of cooling: totally enclosed fan cooled ( tefc ) , 6 . space heaters / rtd: - to be provided . 7 . duty class s1 ( continuous duty ) , 8 . method of starting: dollt starter panel:1 . dol starter suitable for maximum 110 kw and 5 . 5 kw lt motors . 2 . plc control panel for lt motor driven dewatering pump-manual/auto operation interlocks with priming tank level switches . 3 . outdoor lt control panel - ip55 . 4 . plc and hmi automation system for manual & auto mode operation , 5 . lighting system on skid . 6 . lube oil system interlocks signals , 7 . cable tray work , control and instrumentation cable to panel terminations on skid . 8 . aluminium armoured cable b/w lt motor to lt starer panel , 9 . plug sockets for control cable and 415 v ac power supply .