Boron Injection at Natural Circulation Conditions in PWRs

  • K. R. Perkins


Combustion Engineering has performed a boron injection test at San Onofre Unit 2 to demonstrate the ability to borate to the cold shutdown concentration at natural circulation conditions. The test was run in July 1983 and it has been analyzed with the BITRAN code developed at BNL. The test results will demonstrate injection and cooldown capability and provide data for validating boron transport and mixing models.

Extrapolation of the test to more severe emergency conditions indicates oscillations in boron concentration which are predicted to decay within one hour after injection.


Steam Generator Boron Concentration Injection Test Natural Circulation Light Water Reactor 
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  1. 1.
    NRC Regulatory Guide 1.139, “Guidance for Residual Heat Removal to Achieve and Maintain Cold Shutdown,” (Rev. 1).Google Scholar
  2. 2.
    USNRC, “Standard Review Plan,” Rev. 1, NUREG-0800, (July 1981).Google Scholar
  3. 3.
    Combustion Engineering, “Natural Circulation Test Program-San Onofre Nuclear Generating Station-Unit 2-Natural Circulation Cooldown,” C-E Nuclear Power Systems Division, CEN-201(S), Supp. No. 1.Google Scholar
  4. 4.
    K. R. Perkins, R. A. Bari, and E. G. Cazzoli, “PWR Natural Circulation Boron Mixing Tests,” BNL-NUREG-51523 (to be published).Google Scholar
  5. 5.
    Korn, G. A. and Wait, J. V., Digital Continuous System Simulation, Printice-Hall (1978).Google Scholar

Copyright information

© Springer Science+Business Media New York 1984

Authors and Affiliations

  • K. R. Perkins
    • 1
  1. 1.Department of Nuclear EnergyBrookhaven National LaboratoryUptonUSA

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