procurement of spares for breakdown maintenance of biffi make actuators installed at wrpl, vadinar , local interface, biffi part#4800000010 ( as per details mentioned in material description ) , position sensor, biffi, part#4800000020 ( as per details mentioned in material description ) , terminal board 4800000m00 ( as per details mentioned in material description ) , processor card, biffi, part#494con3201 ( as per details mentioned in material description ) , power card biffi, part#494pow1020 ( as per details mentioned in material description ) , power card#pn:494pow5030#make: biffi ( as per details mentioned in material description ) , speed sensor assembly bifi #480000021 ( as per details mentioned in material description ) , selector switch, p / n-480kitsel1 ( as per details mentioned in material description ) , ( as per details mentioned in summary of requirements and technical specifications )