Light-Water-Reactor Safety Research Program: Quarterly Progress Report, April-June 1980

Technical Report · Wed Oct 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/5384293· OSTI ID:5384293

Massey, Walter E. ^[1]; Till, Charles E. ^[1]

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1. Argonne National Laboratory (ANL), Argonne, IL (United States)

Parametric correlations of two and three variables have been developed to describe GRASS-SST-predicted steady-state fission-gas release from UO₂-based fuels. The parametric model, PARAGRASS, has the capability of reproducing GRASS-SST results with good accuracy. In future work, other parameters will be included in the model, and the model will be extended to transient analyses. Also, the methods used to develop correlations for fission-gas release will be used to develop correlations for fuel-swelling strain. An assumption used in the GRASS-SST calculation of grain-edge swelling has been found deficient and is being replaced with a more realistic model. Specimens from the ORNL program ''Fission Product Behavior in LWRs'' were sent to ANL-East for a determination of the mechanism of fission-product release during the high-temperature (>1300°C) tests. The preliminary examination of the specimens has been completed.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE; USNRC
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5384293
• Report Number(s): NUREG/CR--1801; ANL--80-107; ON: TI85015883
• Country of Publication: United States
• Language: English

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