NUREG-1365, Discusses Three Issues Currently Being Tracked by Generic Issue Mgt Control Sys.Issues Include Behavior of Severely Damaged Fuel,Behavior of Core Melt & Effect of Hydrogen Combustion on Containment Structures
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r JUL 5 E 1931
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MEMORANDUM FOR:
Warren Minners, Director Division of Safety Issue Resolution Office of Nuclear Regulatory Research FROM:
Brian W. Sheron, Director Division of Systems Research Office of Nuclear Regulatory Research
SUBJECT:
UPDATE OF GENERIC ISSUE MANAGEMENT CONTROL SYSTEM (GIMCS)
The following three issues currently being tracked by GIMCS have been incorporated into the Severe Accident Research Program (SARP) Plan:
ISSUE NUMBER TITLE II.B.5(1)
Behavior of Severely Damaged Fuel II.B.5(2)
Behavior of Core Melt II.B.5(3)
Effect of Hydrogen Combustion on Containment.
Structures Issues II.B.5(1) and II.B.5(2) are part of the Long Term Issue L2, "In-Vessel Core Melt Progression and Hydrogen Generation;" Issue II.B.5(3) is part of the Long Term Issue L3, " Hydrogen Transport and Combustion." As documented in NUREG-1365,
" Revised Severe Accident Research Program Plan," issue L2 covers in-vessel core melt progression from the start of core uncovery to reactor vessel failure.
Issue L3 includes research on'high temperature /high steam concentration combustion, and deflagration-to-detonation transition to assess the possible threat to containment and safety-related equipment.
Since Issues II.B.5(1), (2) and (3) are an integral part of the SARP, there is no need to duplicate the effort to track them sepErately under GIMCS. Therefore, I
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recommend that the next update of GIMCS be revised accordingly.
Brian W. Shero Director Division of Systems Research Office of Nuclear Regulatory Research Distribution:
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