corrigendum - supply of sump pump at hmrb pipelines , rajbandh ( w . b ) . refer technical specifications and boq . , vertical centrifugal pumping unit ( api610-vs1 type ) with pump , frame , mechanical seal , coupling between pump & motor , coupling guard between pump & motor , weather proof & flame proof motor complete as per specification with companion flanges ( wnrf ) including assistance during commissioning . q=25 m3 / hr , h=75 mcl at discharge nozzle detail technical specifications as per annexure-a . , pump bearing ( q=25 m3 / hr , h=75 mcl ) , complete set of gasket / oring ( q=25 m3 / hr , h=75mcl ) , complete mechanical seal ( q=25 m3 / hr , h=75mcl ) , case wear ring ( q=25 m3 / hr , h=75mcl ) , motor bearing ( de+nde ) ( q=25 m3 / hr , h=75mcl ) , motor cooling fan ( q=25 m3 / hr , h=75mcl )