ON THE REACTIVITY VOID RESPONSE OF AN ADVANCED PRESSURIZED WATER REACTOR.

Yigal Ronen, Melvin J. Leibson, Alvin Radkowsky

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The results of the effect of various parameters on the reactivity void response of an advanced pressurized water reactor (APWR) containing mixed-oxide (plutonium and **2**3**8U) fuel are presented. The parameters studied include the moderator-to-fuel ratio; the presence of **2**3**8U and **2**4**0Pu in the fuel; the presence of parasitic (thermal) absorbers; the variation of eta of **2**3**9 Pu as a function of energy; the assumption that the water in the reactor core upon voiding remains uniform in density; the ratio of **2**3**9Pu/**2**4**1Pu atoms; and the treatment of neutrons in the resonance energy range. It is shown that using the WIMS-D code to determine neutron group constants at low levels of water loss ( less than 40%) from the core is usually adequate for APWR studies and is conservative over the entire range studied.

Original languageEnglish
Pages (from-to)225-239
Number of pages15
JournalNuclear Technology
Volume80
Issue number2
DOIs
StatePublished - 1 Jan 1988

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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