Operation & Maintenance of 2 x 7.5 Tr. capacity air cooled A.C. Plant, 32000 c.f.m capacity forced ventilation system i/c window/split air conditioner and operation all VRF type AC units, AMC of AC system at Audiography, Film Studio, Small Studio, Editing Block, Academic block, Bry-Air dehumidifier at SRFTI, Kolkata