operation and annual maintenance contract ( 2020-22 ) of glf and associated power supply system at hal airport , bengaluru , sh 1: operation of dg sets and amc of glf system , operation and daily maintenance of dg sets and electrical & mechanical installations at glf system and associated power supply at hal airport in all days including sundays and holidays in three shifts , with min . man power of highly skilled-01 , skilled-08 , unskilled-05 which involves daily , preventive , breakdown repairs & corrective maintenance , attending day to day complaints , faults , breakdowns and taking rectification action , ensuring the serviceability & satisfactory working condition of the installations , viz . edge lights end lights , papi and panels etc , maintenance of records & documentations etc . , the agency is required to deploy minimum manpower in each shift of eight hours as detailed in special condition of contract . complete as required . , pproviding vehicle ( tata sumo/bolero or equivalent ) from 0600 hrs to 2200 hrs ( ist ) including driver 02 nos , 1 in each shift fuel and maintenance etc . , for carrying man power , materials ( cable , fittings etc . , ) for glf maintenance inside operational area at hal airport etc . , complete as required .