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Final response to FOIA request for documents re plant feedwater line failure.Forwards App H documents.App G & H documents available in PDR.Document listed in App I completely withheld (ref FOIA Exemption 5).

Accession Number: ML20215H426

Date Released: Sunday, August 16, 2020

Package Contents

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• ML20215H885 - Requests description of NRC approach to problem of corrosion & erosion in feedrings & J-tubes based on 870312 Nucleonics Wk article re French investigation into pipe wall thinning. Rationale for not citing util for poor GDC-1 also requested. (3 page(s), 4/13/1987)
• ML20215H509 - RO:on 720727,during shutdown,two employees injured when steam vent sys malfunctioned.Caused by decay heat release piping disengaging from piping support sys.Workers treated for burns.Design change investigated.News release encl. (32 page(s), 8/16/1972)
• ML20215H962 - Package consisting of NRR presentation to ACRS re 870115 technical meeting to consider generic implications of facility feedwater line failure & J Rosenthal "Failure of Main Feedwater Pipe 861209" outline. (19 page(s), 2/5/1987)
• ML20215H606 - Concludes that injection of cold water into reactor by actuation of safety injection sys had negligible effect on fatigue life of RCPB,based on review of rept on 720727 incident.Addl info on mods requested within 30 days. (2 page(s), 10/11/1972)
• ML20215H640 - Provides addl info in response to RC DeYoung 721011 ltr re high temps experienced in upper level of safeguards bldg. Exhaust duct sys will be installed in safeguards bldg to limit max space temp rise. (2 page(s), 11/16/1972)