bids are invited for vessels in phenol plant 1000463_e3007 c_tempered water cooler , 1000464_e3007 d_tempered water cooler , 1000458_j3001_1 evaporator 1st stage ejector condenser , 1000459_j3001_2 evaporator 2nd stage ejector condenser , 1000460_j3001_3 evaporator 3rd stage ejector condenser , 1000465_e3501a cleavage reactor cooler , 1000466_e3501b cleavage reactor cooler , 1000467_e4001a direct neutralisation feed cooler , 1000468_e4001b direct neutralisation feed cooler , 1000469_e4002a direct neutralisation product cooler , 1000470_e4002 b direct neutralisation product cooler , 1000524_w2502 ammonia condensor , 1000333_v2501 air receiver , 1000332_v2502 oxidiser , 1000334_v2503 oxidiser , 1000026_v2504 oxidiser over head drum , 1000337_v2505 water knock out pot , 1000338_v2506 water wash settler-i , 1000339_v2507 water wash settler-ii , 1000340_v2508 de gassing drum , 1000748_v2511 chp sump , 1000354_v3502 soak pot , 1000355_v4001 neutralisation settler , 1000356_v4002 a wash water settler , 1000357_v4002 b wash water settler , 1000358_v4003 solvent drum , 1000360_v4005 cleavage and direct neutralisation knock out drum , 1000361_v4006 process plant coaleser maintenance of heat exchangers columns and total quantity : 53