Substitute safety rods [electronic resource] : Physics design and NTG calibration

Published:: Washington, D.C. : United States. Dept. of Energy, 1991.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: Pages: (20 pages) : digital, PDF file
Additional Creators:: Westinghouse Savannah River Company, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

Under certain assumed accident conditions, an SRS reactor may loose most of its bulk moderator while maintaining flow to fuel assemblies. If this occurs immediately after operation at power, components normally dependent on convective heat transfer to the moderator will heat up with the possibility of melting that component. One component at risk is the safety rod. Tests have shown that the current cadmium safety rod, which contains aluminum as well as cadmium, can fail at temperatures only slightly in excess of 500 deg C. Computations indicate that such temperatures can be reached with operating powers well below the 50% power limit now imposed by other accident scenarios. Safety rod melting would thus establish a new lower operating limit. A substitute safety rod that could tolerate much higher temperatures would eliminate this limit. This memorandum details the physics characteristics of a suitable replacement rod. 7 refs.

Report Numbers:

E 1.99:wsrc-tr-91-427
wsrc-tr-91-427

Subject(s):

Other Subject(s):

Note:

Published through SciTech Connect.
07/01/1991.
"wsrc-tr-91-427"
"DE92014361"
Baumann, N.P.

Funding Information:

AC09-89SR18035

View MARC record | catkey: 14366488