years, extendable on yearly basis for a further period of two years in government schools, stadia and field offices of the Department of Education, GNCTD as per the requirements of four clusters namely cluster A, B, C & D under cluster wise bidding system (Headquarters to be the lead office). Under the instructions to the bidders, which is part of the NIT, it is declared that the bidder ought to be a limited/private limited company registered under the companies act, 1956 or Joint Venture Consortium (bidding in the form of partnership/proprietorship firm was not permitted) and should have the experience in carrying out security services in Industrial houses, Government undertakings etc. and should have provided similar kind services for at least three consecutive years, having annual average turnover of 30% of the estimated cost of the cluster concerned and if bids were made for more than one cluster, then the annual average turnover be equivalent to 30% of the total tender value of clusters, during the last financial years in the books of accounts ending 31.03.2013.