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1Title:  Naval reactors physics handbook. Volume 1, Selected basic techniques Add
 Chapter title:  "Reactor physics and its application to nuclear power reactors" 
 Summary:  This chapter, written by physicist Alvin Radkowsky, summarizes the design challenges of submarine reactors in comparison with the natural uranium graphite reactors that had been designed and built during World War II. For example, Radkowsky describes the novelty ("close spacing") and design complexity of the control rod arrangement in PWRs (4). He also describes the parallel track of reactor development overseen by NR, with the intermediate range research supporting the S1G and S2G reactors performed by the Knolls Atomic Power Laboratory; and, research supporting the Submarine Thermal Reactor (STR, or the S1W and S2W reactors) led by the Bettis Atomic Power Laboratory. He notes that while the intermediate range reactor approach had, by 1964, been abandoned in favor of the pressurized water reactor (PWR) design, that "fuel loading densities are often sufficiently high [so] that a substantial fraction of the fissions occurs above thermal neutron energies" (2). As a result, some research relating to the intermediate range reactor could be applied to the design of PWRs. Radkowsky also summarizes some design contrasts between submarine reactors and the reactors for the Shippingport Atomic Power Station, with the latter relying on fuels with high U-238 composition. 
 Source:  http://www.osti.gov/bridge 
 Date:   1964 
 Subject(s):  Reactor physics | Nuclear engineering | Naval Reactors 
 Type:  Text 
 Format:  PDF 
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2Title:  Thermal shields centered over reactor vessel Add
 Summary:  The thermal shield positioned above the Shippingport reactor vessel. The core's thermal shields consisted of two stainless steel cylinders which rested inside the vessel. The shields reduced the core's radiation and, thus, the heat generated in the reactor's pressure vessel. 
 Source:  http://www.loc.gov/pictures/item/PA1658/ 
 Reference:  U.S. Atomic Energy Commission, Westinghouse Electric Corporation, Duquesne Light Company, and International Conference on the Peaceful Uses of Atomic Energy. The Shippingport Pressurized Water Reactor. Reading, Mass: Addison-Wesley Pub. Co, 1958, pages 69-70. 
 Date:  11 April 1964 
 Subject(s):  Shippingport Atomic Power Station | Nuclear engineering | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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3Title:  Thermal shield being lowered into Shippingport reactor vessel Add
 Summary:  The thermal shield, which reduces the radiation that reaches the core vessel wall, being lowered into the Shippingport Atomic Power Station's reactor vessel. The shield rested on a support ledge inside the vessel. 
 Source:  http://www.loc.gov/pictures/item/PA1658/ 
 Reference:  U.S. Atomic Energy Commission, Westinghouse Electric Corporation, Duquesne Light Company, and International Conference on the Peaceful Uses of Atomic Energy. The Shippingport Pressurized Water Reactor. Reading, Mass: Addison-Wesley Pub. Co, 1958, pages 69-70. 
 Date:  11 April 1964 
 Subject(s):  Shippingport Atomic Power Station | Nuclear engineering | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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4Title:  Reactor vessel closure head Add
 Summary:  The closure head is lowered to the top of the reactor vessel in the Shippingport Atomic Power Station. The closure head had 46 penetrations; 32 for the control rod drive mechanisms, along with refueling and instrumentation ports. The closure head was bolted and welded to the lower section of the reaction vessel to create a pressure-tight and leak-tight seal. 
 Source:  http://www.loc.gov/pictures/item/PA1658/ 
 Reference:  U.S. Atomic Energy Commission, Westinghouse Electric Corporation, Duquesne Light Company, and International Conference on the Peaceful Uses of Atomic Energy. The Shippingport Pressurized Water Reactor. Reading, Mass: Addison-Wesley Pub. Co, 1958, pages 63-69. 
 Date:  20 April 1964 
 Subject(s):  Shippingport Atomic Power Station | Nuclear engineering | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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5Title:  Main coolant pump removed from operation Add
 Summary:  A reactor coolant pump removed from operation in the Shippingport Atomic Power Station. The Shippingport reactor used four reactor coolant pumps, one for each primary loop. The single-stage, leak proof centrifugal pump supported the flow of coolant in the primary system; in addition to the coolant flow through the pump, lower temperature water circulated within the pump to remove heat and lubricate the motor bearings. The pump was powered by a 2,300 volt electric motor that supported full-speed and half-speed operations. 
 Source:  http://www.loc.gov/pictures/item/PA1658/ 
 Reference:  U.S. Atomic Energy Commission, Westinghouse Electric Corporation, Duquesne Light Company, and International Conference on the Peaceful Uses of Atomic Energy. The Shippingport Pressurized Water Reactor. Reading, Mass: Addison-Wesley Pub. Co, 1958, pages 31-33. 
 Date:  08 May 1964 
 Subject(s):  Shippingport Atomic Power Station | Nuclear engineering | Naval Reactors 
 Type:  Image 
 Format:  JPEG 
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