Naval Reactors History Database (nrhdb)
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Naval Reactors (8)
S1W[X]
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unknown (7)
1952? (1)
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1Title:  S1W propulsion plant - view from the floor Add
 Summary:  View of the S1W prototype plant, looking aft to forward. The water tank on the right surrounded the reactor compartment. This design enabled Naval Reactors to assess the reflection of radiation from the core and primary system back into the hull. The cylindrical hull contained the engine rooms and a maneuvering room (the control room for the reactor and propulsion systems). The S1W plant achieved initial criticality on 30 March 1953. In June, the S1W plant successfully completed a 100 hour continuous run, illustrating that nuclear-powered submarines would revolutionize naval operations. 
 Source:  http://www.subguru.com/nautilus571.htm 
 Reference:  Hewlett, Richard G., and Francis Duncan. Nuclear Navy, 1946-1962. Chicago: University of Chicago Press, 1974, pages 182-186. 
 Date:   unknown  
 Subject(s):  S1W | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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2Title:  The S1W prototype, the world's first naval nuclear reactor plant Add
 Summary:  The S1W plant, prototype for the USS Nautilus. Under the leadership of Hyman Rickover, Naval Reactors followed a concurrent design approach, with the design and construction of the S1W (then named Mark I) plant slightly leading the design and construction of the Nautilus. The S1W plant achieved initial criticality on 30 March 1953. Historians Richard Hewlett and Francis Duncan noted that the S1W "was the world's first fully-engineered nuclear reactor capable of producing practical amounts of energy on a sustained and reliable basis" (186). The S1W was used to support plant testing and operator training for decades and was decommissioned in 1989. 
 Source:  http://www.inl.gov/proving-the-principle/chapter_06.pdf 
 Reference:  Hewlett, Richard G., and Francis Duncan. Nuclear Navy, 1946-1962. Chicago: University of Chicago Press, 1974, pages 164-165, 182-186. 
 Date:   unknown  
 Subject(s):  S1W | Naval Reactors 
 Type:  Image 
 Format:  PNG 
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3Title:  S1W prototype plant - port side, stern view of plant Add
 Summary:  The S1W (Nautilus) prototype plant, with the water brake for the shaft barely visible on the lower right. Under Hyman Rickover's leadership, the S1W (or Mark I) plant was built as both an engineering and a shipboard prototype, with the plant being assembled inside of a cylindrical hull. While this approach had disadvantages (for example, making it difficult to observe equipment operations in the hull's cramped spaces), it significantly reduced the time required to build the follow-up Mark II plant, on board the USS Nautilus. 
 Source:  http://www.inl.gov/proving-the-principle/chapter_06.pdf 
 Reference:  Polmar, Norman, and Thomas B. Allen. Rickover: Controversy and Genius, a Biography. New York: Simon and Schuster, 1984, pages 149-153. 
 Date:   unknown  
 Subject(s):  S1W | Naval Reactors 
 Type:  Image 
 Format:  PNG 
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4Title:  Monitoring equipment outside S1W hull Add
 Summary:  Navy and civilian operators with monitoring equipment at the aft end of the S1W propulsion plant. The S1W's water brake, which absorbed the shaft power, can be seen directly behind the monitoring panel. The aft end of the hull is visible at left. 
 Source:  http://www.inl.gov/proving-the-principle/chapter_06.pdf 
 Date:   unknown  
 Subject(s):  S1W | Naval Reactors 
 Type:  Image 
 Format:  PNG 
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5Title:  Aerial view of the S1W prototype building Add
 Summary:  An aerial view of the S1W prototype building, located at the Idaho National Laboratory. The S1W (or Mark I) plant was the world's first power reactor; it used pressurized water as both coolant and moderator. S1W served as the prototype plant for the USS Nautilus, and as a testing and training plant for the Naval Reactors program until 1989. 
 Source:  http://www.inl.gov/proving-the-principle/chapter_08.pdf 
 Reference:  Rockwell, Theodore. The Rickover Effect: How One Man Made a Difference. Lincoln, NE: IUniverse, 2002, pages 117-145. 
 Date:   unknown  
 Subject(s):  S1W | Naval Reactors 
 Type:  Image 
 Format:  PNG 
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6Title:  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. 
 Source:  http://www.inl.gov/proving-the-principle/chapter_08.pdf 
 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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7Title:  Admiral Rickover just outside of the S1W hull entrance Add
 Summary:  Admiral Hyman Rickover (at center of group) at a hull entrance for the Mark I, or S1W, reactor plant. The S1W (the Nautilus prototype) achieved initial criticality on 30 March 1953; two months later, reactor power was used to drive the prototype's shaft. Rickover then ordered a continuous 100 hour run of the S1W propulsion plant that demonstrated beyond question the revolutionary impact that nuclear propulsion would have upon submarines. 
 Source:  http://www.inl.gov/proving-the-principle/chapter_10.pdf 
 Reference:  Rockwell, Theodore. The Rickover Effect: How One Man Made a Difference. Lincoln, NE: IUniverse, 2002, pages 133-137 and 140-143. 
 Date:   unknown  
 Subject(s):  S1W | Rickover, Hyman G. | Naval Reactors 
 Type:  Image 
 Format:  PNG 
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8Title:  Naval Reactors Facility at the Idaho National Laboratory Add
 Summary:  An aerial view of the Naval Reactors Facility at the Idaho National Laboratory. NRF was the site of the S1W, A1W, and S5G prototypes. The site's Expended Core Facility remains open to support the processing of spent fuel from United States naval reactors. 
 Source:  http://www.facebook.com/group.php?gid=45325547583 
 Date:   unknown  
 Subject(s):  S1W | A1W | S5G | Expended Core Facility | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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