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Simulation of the Propagation of Pressure Waves in Piping Systems with RELAP5/MOD 3.2.2, Comparison of Computed and Measured Results (NUREG/IA-0206)On this page: Download complete document The following links on this page are to documents in Adobe Portable Document Format (PDF). See our Plugins, Viewers, and Other Tools page for more information. For successful viewing of PDF documents on our site please be sure to use the latest version of Adobe. Publication InformationDate Published: June 2007 Prepared by: M.B. Rubin, NRC Project Manager Office of Nuclear Regulatory Research June 2007 Published by AbstractThe present paper demonstrates the suitability of the computer code RELAP5/MOD 3.2.2 to describe the propagation of pressure waves in piping systems. First of all a pressure wave in a simple straight pipe was analyzed with RELAP5. The results of the computation were compared with the outcomes we obtained with the computer code DWELL. DWELL is an in-house development based on the method of characteristics. The results of both codes showed a very good agreement. Further we analyzed the following two transients for a 1200 MWe PWR-plant: • turbine trip In both cases, pressure versus time was recorded at several positions of the piping system concerned. The measured pressure signal curves were compared with the results of post test calculations performed with RELAP5. A comparison of the results showed a good agreement and proved that RELAP5 is able to solve pressure wave problems. PAPERWORK REDUCTION ACT STATEMENTS This NUREG does not contain information collection requirements and, therefore, is not subject to the requirements of the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Public Protection Notification The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid OMB control number. |
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