Full Content is available to subscribers

Subscribe/Learn More  >

Hydrodynamic Loads Calculation of Pressurizer Safety Valve Discharge Piping Using RELAP5/MOD3.1 Computer Code

[+] Author Affiliations
Kyu Bok Lee, Heedo Lee, Jae Sik Jeung, Hee Jin Ko

Korea Power Engineering Company, Ltd., Yongin-si, Gyeonggi-do, Korea

Chang Hyo Kim

Seoul National University, Seoul, Korea

Paper No. FEDSM2003-45271, pp. 2939-2944; 6 pages
  • ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
  • Volume 1: Fora, Parts A, B, C, and D
  • Honolulu, Hawaii, USA, July 6–10, 2003
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3696-7 | eISBN: 0-7918-3673-8
  • Copyright © 2003 by ASME


An assessment was performed with RELAP5/MOD3.1 computer code for EPRI/CE Test No. 917 which was a simulation of a hot water loop seal discharge followed by steam discharge through a pressurizer safety valve. In the RELAP5/MOD3.1 calculation, the input data such as valve opening characteristics, initial fluid conditions, system nodalizations, and system component modeling, were modeled to be identical to those in the RELAP5/MOD1 calculation performed by EPRI. In addition, the input data such as options applied to volumes and junctions, heat transfer to the pipe walls, and pipe orientations, were modeled in accordance with the modeling guidelines suggested in NUREG/IA-0093 which was a RELAP5/MOD3/5m5 code assessment for EPRI/CE Test No. 917. The calculation results were compared with the experimental data as well as the RELAP5/MOD1 calculation to assess the applicability of the RELAP5/MOD3.1 for the hydrodynamic loads calculation. It was demonstrated from the comparisons that the RELAP5/MOD3.1 computer code yielded very similar hydrodynamic loads to the experimental data as well as the RELAP5/MOD1 calculation results, even though minor discrepancies were also identified. Therefore, it is concluded from the assessment that the RELAP5/MOD3.1 computer code can be used as a suitable design tool to calculate the hydrodynamic loads for the hot water loop seal discharge followed by steam discharge transient.

Copyright © 2003 by ASME
Topics: Safety , Stress , Pipes , Valves , Computers



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In