Experimental Study on Reactivity Worth of Burnable Poison in Ultra-Long Life,Small LMR

Conference · Mon Jul 01 00:00:00 EDT 2002

OSTI ID:21062361

Kikuchi, Shigeto; Yoshioka, Kenichi; Matsumiya, Hisato; Yamaoka, Mitsuaki ^[1]; Tsuji, Kenji; Nishikawa, Akira; Inagaki, Hiromitsu ^[2]

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1. Toshiba Corporation (Japan)
2. Chubu Electric Power Company Inc., 1, Higashi-shincho Higashi-ku, Nagoya-shi, ACH 461-8680 (Japan)

Experimental study using an LWR-type critical assembly, NCA, has been conducted on the reactivity worth of the burnable poison (BP) that is employed in a small reactor, 4S, for achieving an extremely long core life. The experimental BP is composed of natural gadolinium oxide (Gd{sub 2}O{sub 3}) mixed in polyethylene. Three types of BPs are prepared: polyethylene without Gd, polyethylene with Gd/H ratio of 0.015 at% and 0.943 at%. Reactivity worth of each BP assembly is measured through change in critical water height. Power profile of fuel rods and flux profile are also measured. Analyses are conducted with a Monte-Carlo code, MCNP. (authors)

• Research Organization: The ASME Foundation, Inc., Three Park Avenue, New York, NY 10016-5990 (United States)
• OSTI ID: 21062361
• Resource Relation: Conference: ICONE 10: 10. international conference on nuclear engineering, Arlington - Virginia (United States), 14-18 Apr 2002; Other Information: Country of input: France
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BORON PHOSPHIDES
BURNABLE POISONS
FUEL RODS
GADOLINIUM OXIDES
MONTE CARLO METHOD
POLYETHYLENES
REACTIVITY WORTHS
ZERO POWER REACTORS