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Impact of Seismic Event on Rupture Probability of Circumferentially Cracked Large-Diameter Piping

Citace: DEMJANČUKOVÁ, K. Impact of Seismic Event on Rupture Probability of Circumferentially Cracked Large-Diameter Piping. In EM 2013. Prague: Institute of Thermomechanics AS CR, 2013. s. 27-28. ISBN: 978-80-87012-47-5
Druh: STAŤ VE SBORNÍKU
Jazyk publikace: eng
Anglický název: Impact of Seismic Event on Rupture Probability of Circumferentially Cracked Large-Diameter Piping
Rok vydání: 2013
Místo konání: Prague
Název zdroje: Institute of Thermomechanics AS CR
Autoři: Ing. Kateřina Demjančuková
Abstrakt EN: Historically, the safety of nuclear power plants (NPPs) is based on the ability to eliminate the large loss-of-coolant accident (large LOCA) which is represented by the double ended guillotine break of the primary circuit piping. As a matter of experience with operation of many nuclear units, US NRC prepared the so- called redefinition of large LOCA which is based on the theory of transition break size (TBS). For the PWR (Pressurized Water Reactor) the TBS is characterized by the piping with diameter of 360 mm. The licence claimant has to prove that the postulated circumferential crack satisfies the requirements of ASME Code, SectionXI. In the paper a numerical example will be presented.
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