Qualification testing program plan for SIMMER. A computer code for LMFBR disrupted core analysis

Technical Report · Sat Jul 01 04:00:00 EDT 1978

OSTI ID:6517400

Basdekas, D L; Silberberg, M; Curtis, R T; Kelber, C N

The objective of SIMMER qualification testing program is to assure that the mathematical models and input parameters are derived from experimental data, which, on the basis of criteria still to be established, are representative of the phenomena and processes governing the progression of a CDA in an LMFBR. At the present time, the work to meet this objective can be classified into three general task areas as they relate to the use of SIMMER in CDA analysis: (1) The whole-core energetic disassembly accident, or the ''vessel problem'': The objective here is to predict the partition of the total energy release, by a postulated severe power excursion, between the primary containment and the energy absorbed through nondestructive dissipative processes. (2) Single subassembly accident: The objective here is to determine the pertinent phenomena and to develop the capability to assess the significance and likelihood that such accidents might propagate to involvement of larger fraction of the core. (3) The whole-core transition phase accident: The objective here is to advance the understanding of the phenomena and processes involved, so that reliable predictions can be made of the possible consequences of a CDA and the potential for further nuclear excursions through recriticality.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (USA). Div. of Reactor Safety Research
• OSTI ID: 6517400
• Report Number(s): NUREG-0457(Rev.0)
• Country of Publication: United States
• Language: English

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