Published April 1992 | Version v1
Report Metadata-only

Effect of reducing fuel enrichment on the void reactivity. Pt. 1 Experimental study

Creators

  • 1. Kyoto Univ. (Japan). Faculty of Engineering
  • 2. Kyoto Univ., Kumatori, Osaka (Japan). Research Reactor Inst.

Description

Reactivity of void in the channels between the fuel plates is measured, and the impact of core conversion from using HEU to MEU fuel in the light-water-moderated cylindrical core with heavy water reflector is investigated on this quantity at the Kyoto University Critical Assembly. The void was generated in the flow channels by producing nitrogen gas bubbles through a small needle-like nozzle and the reactivity effect was measured. The void fraction was measured in an out-of-pile experiment. The results indicate that the void effect on reactivity is slightly larger (more negative) in the MEU core than in the HEU core. It is also shown that the interference effect on reactivity by bubbling in two adjacent channels simultaneously is within the experimental error. (author). Abstract only

Part of:
Research reactor core conversion guidebook. V. 3: Analytical verification (Appendices G and H)

Additional details

Publishing Information

Imprint Title
Research reactor core conversion guidebook. V. 3: Analytical verification (Appendices G and H)
Imprint Pagination
368 p.
Journal Page Range
p. 211.
ISSN
1011-4289
Report number
IAEA-TECDOC--643(v.3)

INIS

Country of Publication
International Atomic Energy Agency (IAEA)
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
23087360
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
BUBBLES; KUCA REACTOR; MODERATELY ENRICHED URANIUM; NITROGEN; REACTIVITY; VOID COEFFICIENT; VOIDS
Descriptors DEC
ACTINIDES; ELEMENTS; ENRICHED URANIUM; ENRICHED URANIUM REACTORS; EXPERIMENTAL REACTORS; GRAPHITE MODERATED REACTORS; ISOTOPE ENRICHED MATERIALS; MATERIALS; METALS; NONMETALS; REACTIVITY COEFFICIENTS; REACTORS; RESEARCH AND TEST REACTORS; URANIUM; WATER MODERATED REACTORS; ZERO POWER REACTORS

Optional Information

Notes
The full text of this paper was published in Nuclear Technology, Vol. 70 (Sep 1985).