Off-design temperature effects on nuclear fuel pins for an advanced space-power-reactor concept
- Bowles, K. J.
- Mar 1, 1974.
- Physical Description:
- 1 electronic document
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
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- An exploratory out-of-reactor investigation was made of the effects of short-time temperature excursions above the nominal operating temperature of 990 C on the compatibility of advanced nuclear space-power reactor fuel pin materials. This information is required for formulating a reliable reactor safety analysis and designing an emergency core cooling system. Simulated uranium mononitride (UN) fuel pins, clad with tungsten-lined T-111 (Ta-8W-2Hf) showed no compatibility problems after heating for 8 hours at 2400 C. At 2520 C and above, reactions occurred in 1 hour or less. Under these conditions free uranium formed, redistributed, and attacked the cladding.
- Other Subject(s):
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19740010208.
Accession ID: 74N18321.
- No Copyright.
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