Rmo water pump sets, compound lights, substation, package/split/ type a.c., water purifier, cctv, access control system and lift etc. of eastern regional test laboratory (east), at dn-63, sector-v, salt lake city, kolkata-700 091 during 2023-24 (sh: providing insulation of aluminium nitrile rubber on wall surface inside the package ac room and dismantling of the old damaged/unserviceable chiller plant accessories, cable tray, electrical panels).