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Effect of intrasubassembly incoherencies on the fast test reactor unprotected transient overpower accident

Journal Article · · Nucl. Technol.; (United States)
OSTI ID:5694319
Intrasubassembly incoherencies affecting the fuel pin failure pattern within a fast test reactor (FTR) subassembly during an unprotected transient overpower/hypothetical core disruptive accident have been investigated using the COBRA-III/MELT code. Two dominant intrasubassembly incoherencies in an FTR subassembly were studied, namely, (a) the hydraulic effect, or the variation in pin-power-to-effective-coolant ratio between pins in the inner region and those in the outer region of the subassembly, and (b) the power skew, or variation in pinwise power density for pins throughout the subassembly.
Research Organization:
Hanford Engineering Development Lab., Richland, WA
OSTI ID:
5694319
Journal Information:
Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 47:1; ISSN NUTYB
Country of Publication:
United States
Language:
English