A level control model for BWR emergency procedure guidelines

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The level control during an Anticipated Transient Without Scram (ATWS) event in a BWR as prescribed in the Emergency Procedure Guidelines (EPG) is a difficult task for the operator for he has to keep the water level at the top of active fuel (TAF) without uncovering the reactor core. Also the computer simulation of EPG level control will require many trial and error calculations with the Emergency Core Cooling System (ECCS). A level control system model has been developed and implemented in the RAMONA-4B code in order to simulate the EPG level control without iterations. The model has been extensively ... continued below

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9 p.

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Cheng, H.S. & Rohatgi, U.S. October 1, 1996.

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Description

The level control during an Anticipated Transient Without Scram (ATWS) event in a BWR as prescribed in the Emergency Procedure Guidelines (EPG) is a difficult task for the operator for he has to keep the water level at the top of active fuel (TAF) without uncovering the reactor core. Also the computer simulation of EPG level control will require many trial and error calculations with the Emergency Core Cooling System (ECCS). A level control system model has been developed and implemented in the RAMONA-4B code in order to simulate the EPG level control without iterations. The model has been extensively tested and the results demonstrate that the model can simulate the EPG level control strategy. The calculations also show that the level control system will speed up the boron circulation to shut down the reactor sooner than the manual control. Furthermore, the suppression pool temperature is predicted to remain within the Technical Specification limit during a MSIV closure ATWS with the proposed level control strategy. 3 refs., 11 figs., 1 tab.

Physical Description

9 p.

Notes

INIS; OSTI as DE96014555

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  • 31. national heat transfer conference, Houston, TX (United States), 3-6 Aug 1996

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  • Other: DE96014555
  • Report No.: BNL-NUREG--63264
  • Report No.: CONF-960815--11
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 379086
  • Archival Resource Key: ark:/67531/metadc685990

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • October 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • April 7, 2016, 8:10 p.m.

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Cheng, H.S. & Rohatgi, U.S. A level control model for BWR emergency procedure guidelines, article, October 1, 1996; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc685990/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.