Evaluation of pipe whip impacts on neighboring piping and walls of the Ignalina nuclear power plant.

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Presented in this paper is the transient analysis of a Group Distribution Header (GDH) following a guillotine break at the end of the header. The GDH is the most important component of reactor safety in case of accidents. Emergency Core Cooling System (ECCS) piping is connected to the GDH piping such that, during an accident, coolant passes from the GDH into the ECCS. The GDH that is propelled into motion after a guillotine break can impact neighboring GDH pipes or the nearest wall of the compartment. Therefore, two cases are investigated: GDH impact on an adjacent GDH and its attached ... continued below

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10 pages

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Dundulis, G.; Kulak, R.F.; Marchertas, A.; Narvydas, E.; Petri, M.C. & Uspusas, E. February 26, 2002.

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Description

Presented in this paper is the transient analysis of a Group Distribution Header (GDH) following a guillotine break at the end of the header. The GDH is the most important component of reactor safety in case of accidents. Emergency Core Cooling System (ECCS) piping is connected to the GDH piping such that, during an accident, coolant passes from the GDH into the ECCS. The GDH that is propelled into motion after a guillotine break can impact neighboring GDH pipes or the nearest wall of the compartment. Therefore, two cases are investigated: GDH impact on an adjacent GDH and its attached piping; and GDH impact on an adjacent reinforced concrete wall. A whipping RBMK-1500 GDH along with neighboring concrete walls and pipelines is modeled using finite elements. The finite element code NEPTUNE used in this study enables a dynamic pipe whip structural analysis that accommodates large displacements and nonlinear material characteristics. The results of the study indicate that a whipping GDH pipe would not significantly damage adjacent walls or piping and would not result in a propagation of pipe failures.

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10 pages

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  • 10th International Conference on Nuclear Engineering (ICONE 10), Arlington, VA (US), 04/14/2002--04/18/2002

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  • Report No.: ANL/RAE/CP-106062
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 793898
  • Archival Resource Key: ark:/67531/metadc737938

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  • February 26, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • March 21, 2016, 3:14 p.m.

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Dundulis, G.; Kulak, R.F.; Marchertas, A.; Narvydas, E.; Petri, M.C. & Uspusas, E. Evaluation of pipe whip impacts on neighboring piping and walls of the Ignalina nuclear power plant., article, February 26, 2002; Illinois. (digital.library.unt.edu/ark:/67531/metadc737938/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.