Otto Fuel A & B Tanks Replacement and Tank P Reconfiguration, B514, Keyport

Deliverable: Design Bid Requested Schedule: FY-25 Swing Priority: 4 IPL Type: NAVSEA-NUWC-NWCF PSC: Asset Management Support: Environmental Support: REIMB Labor: Yes Requirement: Design Build project for REPLACEMENT OF A AND B OTTO FUEL TANKS IN BLDG 514 1. PROJECT BACKGROUND 1.1. Building 514 IMEA processes Otto fuel for use in torpedoes. Following a torpedo run, the fuel tank is emptied, and a water/Otto fuel mixture (“P Fuel”) is reclaimed and separated in a Separation Tank, where water floats on the Otto fuel (Otto fuel is roughly 1.3x denser than water). Once separated, this reclaimed Otto fuel (“B Fuel”) can be re-used for exercise torpedoes. New Otto fuel (“A Fuel”) is only used for warshot torpedoes. In addition to these three tanks, (one for each fuel type), there is a fourth tank used for holding wastewater which contains the separated particulates and other impurities drained from sinks during the teardown process, which is disposed of as HAZMAT. These different fuels are stored in tanks in spaces exterior to but adjoining building 514 (see Figure 1 below). 1.2. The existing A and B Fuel tanks are aluminum single-walled tanks that lack accurate tank level indication and are currently situated in room 127C above spillage containment bays. The A and B fuel tanks are aluminum and were installed in the 1980’s. These tanks have never had a formal, documented inspection. Some fittings and connections have been found to leak, posing a potential environmental hazard. Also, the top manhole cover of the current B Fuel is neither air nor liquid tight and is missing bolts. 1.3. The recent Otto Fuel Reclamation System (OFRS) project provides updates and upgrades to the fuel separation and waste fuel management, and will replace the existing “P Fuel ... NOTE: description has been truncated, please see Project Note for full description.