HIGH PERFORMANCE UO$sub 2$ PROGRAM QUARTERLY PROGRESS REPORT NO. 6, JULY- SEPTEMBER 1962

Technical Report · Thu Oct 31 04:00:00 EST 1963

OSTI ID:4693330

Weidenbaum, B

The experiment for direct measurement of fission-gas pressure was terminated at the VBWR shutdown on September 12, 1962. Evidence indicated that practically 100% of the fission gas is released in that volume fraction of the fuel rod calculated to be operating at a temperature above 1700 un. Concent 85% C. Four irradiations were carried out in the GETR pressurized-water loop. All fuel rods in two assemblies irradiated showed marked swelling of the cladding. The extent of the swelling was directly related to the fuel rod thermal performance. A fuel assembly was fabricated with UO/sub 2/ pellets containing a small central hole in an effort to eliminate clad swelling. When UO/sub 2/ was heated in a tungsten crucible above 2800 un. Concent 85% C migration of tungsten into UO/sub 2/ and UO/sub 2/ into tungsten occurred. (M.C.G.)

• Research Organization: General Electric Co. Atomic Power Equipment Dept., Cincinnati
• NSA Number: NSA-17-022219
• OSTI ID: 4693330
• Report Number(s): GEAP-3771-6; EURAEC-503
• Country of Publication: United States
• Language: English

Related Subjects

COATING
CRUCIBLES
DIFFUSION
EXPANSION
FISSION PRODUCTS
FUEL CANS
FUELS
GASES
GETR
HIGH TEMPERATURE
IRRADIATION
METALS, CERAMICS, AND OTHER MATERIALS
OPERATION
PELLETS
PERFORMANCE
PRESSURE
REACTORS
REPORT
RODS
TUNGSTEN
URANIUM DIOXIDE
VBWR