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Discusses current status of plants operating or close to operation affected by fuel anomalies due to densification of oxide fuel causing void regions in oxide columns,subsequent creep-down & collapse of unsupported cladding.

Accession Number: ML19289B350

Date Released: Friday, October 25, 2024

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• ML20084E977 - Discusses current status of plants operating or close to operation affected by fuel anomalies due to densification of oxide fuel causing void regions in oxide columns,subsequent creep-down & collapse of unsupported cladding. (4 page(s), 8/25/1972)
• ML20073H967 - Discusses anomalies in reactor fuel discovered by util during current refueling outage in May 1972.Due to insufficient new fuel assemblies,util proposed to continue operation w/defective ones.Addl info required. (2 page(s), 6/16/1972)
• ML20084E979 - Comments on Ginna fuel problem,per Region I 720607 memo,in response to F Nolan request.Startup delayed until rept re review of peak factors & accident analysis received & reviewed by AEC. (2 page(s), 6/9/1972)
• ML20084E982 - Advises that interim operation of plant may resume subj to conditions proposed,supplemented by addl conditions specified in encl, "Interim Conditions for Operation of RE Ginna Nuclear Power Plant Unit 1." (2 page(s), 6/23/1972)
• ML20084E985 - "Interim Conditions for Operation of RE Ginna Nuclear Power Plant Unit 1." (3 page(s), 6/23/1972)
• ML20084E990 - Forwards matl re fuel abnormalities at Ginna & other operating PWRs in response to questions posed by AEC during 720623 meeting.W/o encl. (1 page(s), 6/30/1972)
• ML20084E994 - Summary of recent meetings w/util & Westinghouse re fuel pin cladding collapse & bowing problems.Requests review & evaluation of in-core flux peaking monitoring program during plant insps due to possible increase in hot channel factor. (6 page(s), 7/5/1972)
• ML20084E997 - Forwards A Giambusso 720717 & M Rosen 720712 memos commenting on recent fuel problem,cladding collapse & bow problem at plant. (1 page(s), 8/17/1972)
• ML20084F000 - Comments on 720712 memo re plant fuel problem.Premature to conclude fuel model for predicting steady state different from reality & naive.Agrees w/need to reexamine extent new info affects ability to predict fuel performance. (2 page(s), 7/17/1972)
• ML20084F004 - Summarizes thoughts re review of Ginna fuel problem & offers general comments on safety & overall reactor licensing situation.Areas requiring further consideration include safety implications & safety evaluation techniques. (3 page(s), 7/12/1972)
• ML20084F008 - AO:on 720503,head control operator noted increase in loop differential temp & RHR sys flow meter indicating zero flow. Possibly caused by air in Loop A hot leg through vortexing into suction of RHR sys. (3 page(s), 5/15/1972)
• ML20084F012 - Forwards Inquiry Rept 50-244/72-11 re violation of containment integrity resulting from loss of RHR sys.Problem considered safety significant.Special site insp on 720511 planned to review occurrence details. (1 page(s), 5/9/1972)
• ML20084F014 - Inquiry Rept 50-244/72-11:on 720503,complete loss of flow in RHR sys occurred w/containment integrity not established. Possibly caused by air in pumps resulting from vortexing in loop.Loop drain opened to drain collecting tank. (2 page(s), 5/9/1972)