repairing refilling & overhauling of fire fighting equipments at 220 kv s / s behat & 132 kv chhutmalpur-1 refiling of following co2 type fire extinguishers. 1.01 42 kg 1.02 22.5 kg 1.03 9 kg 1.04 4.5 kg 2 refiling of following mech. foam type fire extinguioshers. ( a ) 45 ltr mechanical foam 2.01 9 ltr mechanical foam 3 refiling of dry powder type fire extionguishers . ( a ) 10 kg 3.02 dry powder 5 kg 4 replacement of pipe with horn of co2 type fire extinguishers. ( a ) 42 kg 4.01 22.5 kg 4.02 9kg 4.03 4.5 kg 4.04 45 ltr mechanical foam 4.05 9 ltr mechanical foam 5 replacement of damaged trolly wheel set for following fire extinguishers. ( a ) 22.5 kg co2 type 5.01 9 kg co2 type 5.03 45 ltr mechanical foam 6 painting of following type fire extinguishers by synthetic enamel paint in post office red colour alongwith of date of refilling & expiry. ( a ) 22.5 kg co2 6.01 9 kg co2 type 6.03 9 ltr mechanical foam 6.04 45 ltr mechanical foam 7 replacement of safety valve