Results of transient overpower events on breached and unbreached fuel pins

Conference · Tue Apr 01 04:00:00 EST 1986

OSTI ID:6430163

Strain, R V; Tsai, H C; Neimark, L A; Aratani, K

The objective of the extended overpower tests on intact pins was to determine the pin cladding breaching thresholds vis-a-vis the Plant Protection System (PPS) trip settings, typically at approx.10 to 15% overpower. These tests emphasize slow operational-type transients in light of earlier work which suggested that irradiated mixed-oxide fuel pins may be particularly vulnerable in the slow ramp-rate regime. An overview of the extended overpower test series was previously reported. More recent results on two of the tests in this series are included in this paper. These two tests, designated TOPI-1A and TOPI-1B, were each conducted on a 19-pin assembly with various pin design, operation and burnup variables. The overpower ramp rates for the TOPI-1A and -1B tests were 0.1%/s and 10%/s, respectively.

• Research Organization: Argonne National Lab., IL (USA); Power Reactor and Nuclear Fuel Development Corp., Oarai, Ibaraki (Japan). Oarai Engineering Center
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6430163
• Report Number(s): CONF-860931-14; ON: DE87004993
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500 -- Power Reactors
Breeding
22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
BREEDER REACTORS
EPITHERMAL REACTORS
FAILURES
FAST REACTORS
FBR TYPE REACTORS
FISSION PRODUCTS
FUEL ELEMENTS
FUEL PINS
IRRADIATION
ISOTOPES
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MATERIALS
PERFORMANCE
RADIOACTIVE MATERIALS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTORS
RELIABILITY
TESTING
TRANSIENT OVERPOWER ACCIDENTS