bids are invited for custom bid for services - part a lumpsum rate towards contract for services for amc of fire alarm systems installed at gail pata note 1 lumpusm equal to 24 months , custom bid for services - part b 1 hourly rate beyond normal duty of 8 hours for services of semi skilled resources note 1 lumpsum equal to 800 hrs , custom bid for services - part b 2 hourly rate beyond normal duty of 8 hours for services of skilled resources note 1 lumpsum equal to 800 hrs , custom bid for services - part b 3 hourly rate beyond normal duty of 8 hours for services of highly skilled resources note 1 lumpsum equal to 400 hrs , custom bid for services - part b 4 supply of smoke gas in vendor owned canisters on returnable basis note 1 lumpsum equal to 48 nos