METHOD FOR REDUCING NONUNIFORMITY OF THERMAL RESOURCES DISTRIBUTION IN FUEL ASSEMBLIES OF NUCLEAR REACTOR CORE (ALTERNATIVES)

FIELD: cores of water-cooled thermal reactors. SUBSTANCE: method for reducing nonuniformity of thermal resources distribution in reactor core fuel assemblies incorporating fuel elements of main enrichment with respect to fissionable isotopes includes insertion of thermal resources having lower enric...

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Main Authors GOROKHOV A.K, CHAPAEV I.G, KOBELEV S.N, ENIN A.A, NAUMOV V.I, PONOMARENKO G.L, KUSHMANOV A.I, VASIL'CHENKO I.N
Format Patent
LanguageEnglish
Published 20.12.2003
Edition7
Subjects
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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Summary:FIELD: cores of water-cooled thermal reactors. SUBSTANCE: method for reducing nonuniformity of thermal resources distribution in reactor core fuel assemblies incorporating fuel elements of main enrichment with respect to fissionable isotopes includes insertion of thermal resources having lower enrichment in high- nonuniformity fuel elements. Fuel placed in fuel elements in vicinity of higher thermal resources has higher enrichment than in vicinity of lower thermal resources. As one of alternatives of this method, fuel used in lower part of peripheral fuel elements is of higher enrichment than that in their upper part. As another alternative of proposed method, fuel disposed in lower parts of peripheral and pre- peripheral fuel elements is of higher enrichment than that in their upper parts. EFFECT: enhanced thermal reliability of fuel assemblies. 3 cl, 5 dwg
Bibliography:Application Number: RU20010127049