AEOD issued a memorandum[1] in which a potential safety issue involving combined primary and secondary system LOCAs was raised. The issue was discussed at Commission meetings on October 16, 1980 and on
November 10, 1980. NRR informed AEOD of the results of the then current status of the staff's evaluation.[2] In SECY-82-296,[3] the staff recommended to the Commission that this issue not be classified as an USI and that the issue could be adequately handled by ongoing reviews. This issue is identical to Issue 18 which is being implemented as part of TMI Action Plan Item I.C.1 clarified in NUREG-0737.[4]
This issue is covered in TMI Action Plan Item I.C.1.
[1] Memorandum for Chairman Ahearne from C. Michelson, "New Unresolved Safety Issues," August 4, 1980. [8010240206]
[2] Memorandum for C. Michelson from H. Denton, "Combination Primary/Secondary System LOCA," December 8, 1981. [8201200049]
[3] SECY-82-296, "Resolution of AEOD Combination LOCA Concern," U.S. Nuclear Regulatory Commission, July 13, 1982. [8207230202]
[4] NUREG-0737, "Clarification of TMI Action Plan Requirements," U.S. Nuclear Regulatory Commission, November 1980, (Supplement 1) January 1983.
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