operation and maintenance of central air conditioning plant at abdul kalam island, dhamra ( fy 2023-24 ) . opearion and maintenance of central air conditioning plant at abdul kalam island, dhamra ( fy 2023-24 ) .scope of work as per part-iv, at para 4.1. payment terms as per clause 5.19.1. payment will be made on prorate basis as per manpower deployed at site, based on presence / absence report during the month. manpower will be provided as given below :- ( i ) supervisor ( highly skilled ) - 01 ( ii ) refrigerant mechanic ( highly skilled ) - 01 ( iii ) ac plant operator ( skilled ) - 04 ( iv ) helper ( un skilled ) - 05note : the contractor shall factor in anticipated increase in fare minimum wages by the chief labour commisioner, govt of india, ministry of labour ( 4.7.3 ) , and quote accordingly. the contractor shall pay to the employees as per wages revised by the chief labour commissioner, govt of india, ministry of labour, from time to time and contract value will be amended accordingly.