Naval Reactors History Database (nrhdb)
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31Title:  A worker inside the S1W hull during the plant's construction Add
 Summary:  A contractor inside the cylindrical hull of the S1W plant, during its construction. The propulsion plant was built inside of a submarine hull less than 30 feet in diameter, enabling the lessons learned during its construction to guide the design and construction of the S2W plant, installed in the Nautilus. 
 Reference:  Polmar, Norman. Atomic Submarines. London: Van Nostrand, 1963, pages 71-74. 
 Date:  circa 1952 
 Subject(s):  S1W | Naval Reactors 
 Type:  Image 
 Format:  PNG 
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32Title:  Authorizing legislation for destroyer reactor plant Add
 Summary:  This hearing document describes an appropriation to support the construction of the destroyer prototype plant D1G at the General Electric facility in West Milton, New York. The primary purpose of the D1G project was “to provide for development of the lightest practicable pressurized water reactor plant which can be effectively utilized in the Navy's nuclear-powered destroyer which is included in the fiscal year 1959 shipbuilding program” (2). The D1G reactor plant itself incorporated “advances in the areas of nuclear physics, heat transfer, reactor control, fuel element design and core life” (2). The hearing focuses on related issues, such as the status and timing of the Navy’s request for the nuclear-powered destroyer and the D1G’s relation to the aircraft carrier prototype, then under construction at the Idaho National Laboratory. Additionally, there is a dialogue on the need for the prototype plant, given the information that was available based on the operation of existing nuclear-powered prototypes and submarines. W. Kenneth Davis, Director of the AEC’s Division of Reactor Development, notes that the D1G is prototype will represent “a new and advanced type of propulsion plant,” making the construction of a prototype necessary (6). 
 Date:   1958 
 Subject(s):  D1G | Naval Reactors 
 Type:  Text 
 Format:  PDF 
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33Title:  Reactor compartment package characteristics for several submarine and surface plants Add
 Summary:  This graphic shows reactor compartment package characteristics for some submarine and surface ship reactor plants. After decommmissioning, the reactor plant(s) in a submarine or ship are removed and packaged for storage at the Puget Sound Naval Shipyard. The compartments are then shipped to and stored at the Hanford Site in Washington state. The primary system components housed inside the reactor compartment include: the reactor pressure vessel, reactor shielding, main coolant pumps, pressurizer system, and steam generators. 
 Reference:  United States Department of the Navy. Draft environmental assessment on the disposal of decommissioned, defueled naval reactor plants from USS Enterprise (CVN-65). U.S. Department of the Navy, 2011, pages 2-2 - 2-5. 
 Date:   unknown  
 Subject(s):  Nuclear engineering | Naval Reactors 
 Type:  Image 
 Format:  GIF 
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34Title:  Simplified view of S8G naval nuclear propulsion plant Add
 Summary:  A simplified view of the S8G reactor used to power the Ohio-class Trident ballistic missile submarines. The S8G plant's two turbines provide 60,000 shp (thermal power, shaft horsepower), approaching twice the power produced by the S6G plant used to drive the Los Angeles-class attack submarines. Admiral Hyman Rickover, head of Naval Reactors when the Trident submarine was designed in the early 1970s, supported the 60,000 shp plant, which contributed to the submarine's large size (560 feet long, with a submerged displacement of 18,700 tons). 
 Reference:  Polmar, Norman, and Thomas B. Allen. Rickover: Controversy and Genius, a Biography. New York: Simon and Schuster, 1984, pages 564-578. 
 Date:   unknown  
 Subject(s):  S8G | Nuclear engineering | Naval Reactors 
 Type:  Image 
 Format:  GIF 
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35Title:  Containment structure built for the S1G prototype plant Add
 Summary:  The containment building built for the sodium-cooled, intermediate range S1G reactor plant in West Milton, New York. In January 1952, the Atomic Energy Commission's Reactor Safeguards Committee approved the construction of the S1G reactor at West Milton, provided the reactor was enclosed in a containment sphere. The 225 foot sphere, composed of one inch steel plates, was designed to contain any radioactivity release. After the sodium-cooled approach was abandoned by Naval Reactors, the S1G plant was decommissioned. The sphere was later used to house the D1G pressurized water reactor/prototype plant. 
 Reference:  Hewlett, Richard G., and Francis Duncan. Nuclear Navy, 1946-1962. Chicago: University of Chicago Press, 1974, pages 176-177. 
 Date:   unknown  
 Subject(s):  S1G | D1G | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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36Title:  The NR-1 research vessel Add
 Summary:  The NR-1 nuclear submarine at Port Canaveral, Florida. NR-1 was a small, deep-diving submarine that was designed to operate on the ocean floor.The submarine's low-power reactor was designed by General Electric and could be operated by a single crewman. 
 Reference:  Vyborny, Lee, and Don Davis. Dark Waters: An Insider's Account of the NR-1, the Cold War's Undercover Nuclear Sub. New York: New American Library, 2003, pages 53-54. 
 Date:  01 February 2006 
 Subject(s):  NR-1 | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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37Title:  Pressurized-water naval nuclear propulsion system Add
 Summary:  A simplified view of the major primary and secondary components in a naval nuclear propulsion plant. The fuel elements, containing Uranium-235 pellets, are enclosed in the reactor vessel. Pressurized water is used to moderate neutrons in the reactor core and serves as the heat transfer medium. Heated water moves to the steam generator, where the heat transfer takes place between the primary and secondary loops. The main coolant pump then returns the relatively cool water to the reactor core. The pressurizer enables primary loop pressure control through heaters (to increase pressure) and spray (to reduce pressure). The steam produced in the steam generator is used to drive turbines for propulsion and electrical power. 
 Reference:  Hewlett, Richard G., and Francis Duncan. Nuclear Navy, 1946-1962. Chicago: University of Chicago Press, 1974, pages 131-135. 
 Date:   unknown  
 Subject(s):  Nuclear engineering | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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38Title:  Main control console at Shippingport (looking north) Add
 Summary:  The main control console for the Shippingport Atomic Power Station. While the Naval Reactors organization, working with Westinghouse, led the design and development of the Shippingport reactor, some aspects of the plant - such as the large size of the control panels and the use of concrete for shielding - were quite different when compared with the submarine reactor plants that had been designed and built under NR's oversight. 
 Reference:  Hewlett, Richard G., and Francis Duncan. Nuclear Navy, 1946-1962. Chicago: University of Chicago Press, 1974, pages 240-242. 
 Date:   unknown  
 Subject(s):  Shippingport Atomic Power Station | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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39Title:  Launch of the NR-1 submersible research vehicle Add
 Summary:  The NR-1 nuclear submarine slides down the building ways at Electric Boat (division of General Dynamics). NR-1 was used as a deep sea exploration and recovery vehicle. 
 Date:  25 January 1969 
 Subject(s):  NR-1 | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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40Title:  NR-1 control and instrument panels Add
 Summary:  Interior of NR-1, showing the submarine's instrument and control panels. NR-1 was powered by a small, low-power pressurized water reactor. The submarine was capable of speeds of 3.5 knots per hour when submerged, and had forward and aft wheels, enabling her to work on the ocean floor. 
 Date:   unknown  
 Subject(s):  NR-1 | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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