FY14 Emergency Type IV Hydrant Fuel Repair, Phase II, Misawa AB, Japan

Emergency Project will provide mandatory repairs and upgrades needed to the existing out-of-service Type IV Hydrant Fuel System.  Project will repair hydrant fueling control system, flow controls, electrical piping, and pressure relief system.  This includes replacement of existing programmable logical controller (PLC), installation of return venturi, replacement of oversized back pressure control valve (BPCV), relocation and refurbishing of ESOV, replacement of TRV, and associated piping, installation of new pressure indicating transmitters (PITs) and differential pressure transmitters (DPTs) for PLC support, and replacement of isolation valves with DB&B plug valves.  Provide new piping/valves in existing crossover and return pit, perform existing valve pit modifications, and repair and seal tunnel walls and valve pits.  Install new piping and valves from filer seperator building to hydrant operating tanks N-1 and N-2 to allow simultaneous issue and receipt for hydrant system per current Type III/IV standard design.  This project also includes draining, pigging, capping, and abandoning approximately 10,600 LF of 12 quote mark piping and 10,600 LF of 10 quote mark piping with associated valve pits and removal and demolition of the Aqueous Film Forming Foam (AFFF) system and miscellaneous piping from the filter pump house.  Pior to returning hydrant loop to service a comprehensive hydrant tuning and commissioning should be performed by qualified contractor.