LOSS-OF-PRESSURE ACCIDENT--HOT LEG PIPING FAILURE (BLOWER BEHAVIOR CONSIDERED)

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A study was made to determine pressure differentials across coolant system components by considering the blowers' influence during the transient state following a rupture in one hot leg of the Experimental Gas Cooled Reactor Coolant System. Results are presented in tables and graphs. It was concluded that a large instantaneous rupture of the reactor coolant system results in lifting the core when the entire graphite area is exposed to the differential. The forces depend on the type of gas seal used to prevent bypass of reactor coolant around the graphite columns. If the gas seal is located at the periphery … continued below

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40 pages

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Landoni, J. A. January 11, 1960.

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A study was made to determine pressure differentials across coolant system components by considering the blowers' influence during the transient state following a rupture in one hot leg of the Experimental Gas Cooled Reactor Coolant System. Results are presented in tables and graphs. It was concluded that a large instantaneous rupture of the reactor coolant system results in lifting the core when the entire graphite area is exposed to the differential. The forces depend on the type of gas seal used to prevent bypass of reactor coolant around the graphite columns. If the gas seal is located at the periphery of the column, the entire graphite area is subjected to the pressure differential. The use of a separate gas seal at each fuel channel results in only a portion of the graphite column cross-sectional area exposed to the pressure differential thereby reducing the upward force on the core graphite. The incorporation of quick-closing'' valves in the reactor coolant system also reduces the differential pressure across the core and limits the lifting force to which the core is subjected. (M.C.G.)

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40 pages

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Other Information: Orig. Receipt Date: 31-DEC-63

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  • January 11, 1960

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  • Oct. 18, 2017, 7:39 a.m.

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  • Nov. 22, 2024, 10:22 p.m.

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Landoni, J. A. LOSS-OF-PRESSURE ACCIDENT--HOT LEG PIPING FAILURE (BLOWER BEHAVIOR CONSIDERED), report, January 11, 1960; United States. (https://digital.library.unt.edu/ark:/67531/metadc1027318/: accessed November 9, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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