Determination of maximum reactor power level consistent with the requirement that flow reversal occurs without fuel damage

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Description

The High Flux Beam Reactor (HFBR) operated by Brookhaven National Laboratory (BNL) employs forced downflow for heat removal during normal operation. In the event of total loss of forced flow, the reactor will shutdown and the flow reversal valves open. When the downward core flow becomes sufficiently small then the opposing thermal buoyancy induces flow reversal leading to decay heat removal by natural convection. There is some uncertainty as to whether the natural circulation is adequate for decay heat removal after 60 MW operation. BNL- staff carried out a series of calculations to establish the adequacy of flow reversal to ... continued below

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90 p.

Creation Information

Rao, D.V.; Darby, J.L.; Ross, S.B. & Clark, R.A. April 19, 1990.

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Description

The High Flux Beam Reactor (HFBR) operated by Brookhaven National Laboratory (BNL) employs forced downflow for heat removal during normal operation. In the event of total loss of forced flow, the reactor will shutdown and the flow reversal valves open. When the downward core flow becomes sufficiently small then the opposing thermal buoyancy induces flow reversal leading to decay heat removal by natural convection. There is some uncertainty as to whether the natural circulation is adequate for decay heat removal after 60 MW operation. BNL- staff carried out a series of calculations to establish the adequacy of flow reversal to remove decay heat. Their calculations are based on a natural convective CHF model. The primary purpose of the present calculations is to review the accuracy and applicability of Fauske`s CHF model for the HFBR, and the assumptions and methodology employed by BNL-staff to determine the heat removal limit in the HFBR during a flow reversal and natural convection situation.

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90 p.

Notes

INIS; OSTI as DE96000824

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  • Other Information: PBD: 19 Apr 1990

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  • Other: DE96000824
  • Report No.: LA-SUB--95-175-A:5
  • Report No.: SEA--90-500-02-A:5
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/106410 | External Link
  • Office of Scientific & Technical Information Report Number: 106410
  • Archival Resource Key: ark:/67531/metadc626758

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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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  • April 19, 1990

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • July 28, 2016, 7:31 p.m.

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Rao, D.V.; Darby, J.L.; Ross, S.B. & Clark, R.A. Determination of maximum reactor power level consistent with the requirement that flow reversal occurs without fuel damage, report, April 19, 1990; New Mexico. (digital.library.unt.edu/ark:/67531/metadc626758/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.