air compressor and dryer , supply of instrument air compressor & dryer - design , engineering , manufacturing , supply , supervision for erection & commissioning , shop testing , inspection ( including third party ) , supply of commissioning and mandatory spares , special tools & tackles ( if any ) as per material requisition number s-17047-4-imr1014 , supply of instrument air compressor ( tag nos . u-3201a/ u-3201b/ u-3201c ) & dryer ( tag nos . u-3202a/ u-3202b/ u-3202c ) , supervision of erection , testing & commissioning as per material requisition number s-17047-4-imr1014 for item mentioned in 1 . 00 above . , overtime rate/ hour beyond normal 8 hours work on normal working days . , per diem charges for up to 8 hours on weekly off days/holidays ( as applicable to site ) , overtime rate/hour for work on weekly off days/ holidays ( as applicable at project site ) .