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Partial response to FOIA request for documents re mode of failure of reactor coolant pump seals,probable cause of failure & possible remedies for failures of seals.Forwards App A documents.App B documents available in PDR.

Accession Number: ML20125C335

Date Released: Sunday, October 27, 2024

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• ML20125C333 - Partial response to FOIA request for documents re mode of failure of reactor coolant pump seals,probable cause of failure & possible remedies for failures of seals.Forwards App A documents.App B documents available in PDR. (6 page(s), 2/20/1985)
• ML20127A979 - Summary of 830930 meeting w/Westinghouse & Westinghouse Owners Group in Bethesda,MD re reactor coolant pump seal leakage under station blackout conditions.Meeting agenda & slide presentation encl. (70 page(s), 10/14/1983)
• ML20127A574 - Summary of 830414 meeting w/C-E Owners Group in Bethesda,MD re reactor coolant pump seal performance under loss of cooling conditions. (3 page(s), 4/26/1983)
• ML20127A671 - Discusses Westinghouse info on performance of reactor coolant pump seals under loss of seal support functions. Owners group test data & data from confirmation test by NRC should provide needed info on survivability of O-ring seal. (4 page(s), 6/15/1983)
• ML20127A955 - Recommends issuance of board notification since current Westinghouse Owners Group test results indicate possibility for reactor coolant pump failure under loss of cooling conditions. (2 page(s), 9/15/1983)
• ML20127A695 - Lists NRC requests for program additions re reactor coolant pump (RCP) seal leakage & planned secondary level survival tests.Leak rate vs time estimates necessary for assessment of probability of RCP seal LOCA causing core damage. (2 page(s), 6/22/1983)
• ML20127B918 - Advises that "Westinghouse Reactor Coolant Pump Seal Performance Following Loss of All AC Power," reviewed. Recommends more in-depth review by experts in thermo/fluid dynamics prior to acceptance of Westinghouse analysis. (5 page(s), 8/1/1984)
• ML20127A547 - Requests prompt review & comment on draft task action plan for Generic Issue B-23 "Reactor Coolant Pump Seal Failures." Conclusions reached on Unresolved Safety Issue A-44 will be factored into generic issue,as applicable. (26 page(s), 3/31/1983)
• ML20127A524 - Summary of 830303 meeting w/Westinghouse in Bethesda,MD re reactor coolant pump seal performance under loss of cooling conditions. (2 page(s), 3/17/1983)
• ML20125C375 - Project & budget proposal for NRC work: "Reactor Coolant Pump (RCP) Seal Failure Analysis." (19 page(s), 4/19/1984)
• ML20127A765 - Summary of 830628 meeting w/Bingham-Williamette in Bethesda, MD re reactor coolant pump seal design & seal survivability during loss of cooling. (1 page(s), 7/1/1983)
• ML20127B812 - Requests assistance in reviewing WCAP 10541, "Westinghouse Reactor Coolant Pump Seal Performance Following Loss of All AC Power." Comments requested by 840731. (2 page(s), 6/26/1984)
• ML20127B010 - Forwards latest draft of Task Action Plan 23, "Reactor Coolant Pump Seal Failures." Support work should start by 831101.Branch representative should be designated. (1 page(s), 10/26/1983)
• ML20127B500 - Discusses results of new Westinghouse reactor coolant pump seal leakage analysis.Westinghouse maintains that O-rings & channel seals will not fail at new lower pressure differentials. (4 page(s), 4/11/1984)
• ML20127A621 - Trip rept of 830419-22 visit to CEA in Paris,France & 830425-29 visit to Committee on Safety of Nuclear Installation specialist meeting on DHR sys. (15 page(s), 5/24/1983)
• ML20127A973 - Trip rept of 830926-29 visits to Cheswick,Monroeville & Philadelphia,PA sites to review mfg control of Westinghouse reactor coolant pump seals. (16 page(s), 10/14/1983)
• ML20127A533 - Lists general concerns,questions & info NRC would like to pursue w/C-E Owners Group re probability of reactor coolant pump seal LOCA resulting from loss of seal support function. (2 page(s), 3/18/1983)
• ML20125C352 - Forwards "Monthly Technical Rept for Apr 1984." Input for May 1984 rept due by 840608. (8 page(s), 5/11/1984)
• ML20125C361 - Forwards project & budget proposal for NRC work: "Reactor Coolant Pump (RCP) Seal Failure Analysis." (1 page(s), 4/25/1984)
• ML20127A562 - Comments on draft task action plan for Generic Issue B-23, reactor coolant pump seal failures.Actual seal failure mechanism determination,reactor coolant pump seal cooling evaluation & mechanical & maint induced failures discussed. (3 page(s), 4/21/1983)
• ML20126D956 - Submits rept of reactor coolant pump seal hot standby test conducted 800826-28 at site.Concludes that coolant pump seals should not experience appreciable leakage in event of station blackout. (33 page(s), 9/19/1980)
• ML20127A625 - Paper entitled, "Insights on Design & Operation of DHR Sys From Use of PRA," presented at Committee on Safety of Nuclear Installation 830420-22 specialist meeting on DHR sys in Zurich,Switzerland. (10 page(s), 4/25/1983)
• ML20127A787 - Summary of 830706 meeting w/Westinghouse Owners Group re reactor coolant pump seal leakage test program,Generic Issue 23. (21 page(s), 7/19/1983)
• ML20127C395 - Summary of 830407 meeting w/Westinghouse Owners Group re reactor coolant pump secondary seal survival leakage test program.Agenda & viewgraphs encl. (28 page(s), 4/15/1983)
• ML20127B026 - Forwards comments on 831026 draft task action plan for Generic Issue 23, "Reactor Coolant Pump Seal Failures." JC Tsao,R Riggs & L Riani should be added to NRR principal reviewer list. (2 page(s), 11/2/1983)
• ML20127A616 - Forwards trip rept of 830419-22 visit to France re reactor coolant pump seal behavior & paper presented at Committee on Safety of Nuclear Installation 830425-29 specialist meeting on DHR sys in Zurich,Switzerland. (1 page(s), 5/25/1983)
• ML20127B211 - Discusses German approach to reactor coolant pump seal leakage.Pumps use hydrodynamic & hydrostatic type seal designs. (3 page(s), 2/7/1984)
• ML20127A514 - Requests assistance in evaluation of Westinghouse info on reactor coolant pump seal LOCAs after loss of seal cooling. Generic issue of seal failures being prioritized.Guidelines listed. (3 page(s), 2/18/1983)
• ML20127A556 - Comments on Div of Sys Integration proposed task action plan on Generic Issue 23, "Reactor Coolant Pump Seal Failures." Issue numbered Issue 23 not B-23.Review of LER info to determine number of failures & causes is insufficient. (16 page(s), 4/13/1983)
• ML20127B324 - Discusses branch assistance in review of Generic Issue 23 re reactor coolant pump seal failures.J Guttman & C Liang assigned to assemble background info.Review scheduled for completion on 840930. (1 page(s), 2/28/1984)
• ML20127B597 - Trip rept of 840411 visit to AECL in Ontario,Canada re review of results of RES sponsored reactor coolant pump seal testing & Westinghouse proposed seal test program. (6 page(s), 4/25/1984)
• ML20127A778 - Trip rept of attendance at Committee on Safety of Nuclear Installation 830425-29 specialist meeting re DHR sys in Wurenlingen,Switzerland.Meeting beneficial in providing insight into Task A-45 program. (61 page(s), 7/14/1983)
• ML20127B031 - Advises that full-scale test of reactor coolant pump seal under LOCA conditions required in order to determine safety significance.Design info re pump seal & associated sys needed to make independent design assessment. (3 page(s), 11/2/1983)
• ML20127B394 - Summary of 840228 meeting w/Westinghouse & Westinghouse Owners Group re latest results of reactor coolant pump seal leakage analysis.Agenda & viewgraphs encl. (24 page(s), 3/12/1984)
• ML20127A631 - Forwards comments on task action plan for Generic Issue 23, "Reactor Coolant Pump Seal Failures." Confusion appears to exist on intent,scope & direction of plan.Plan should include & schedule value/impact analysis. (7 page(s), 5/25/1983)
• ML20127B014 - Draft Task Action Plan 23, "Reactor Coolant Pump Seal Failures." (35 page(s), 10/26/1983)
• ML20127A664 - Requests addl info re Westinghouse seal dimensions &matls for EG&G evaluation on pump shaft seal tests.Response requested by 830620. (26 page(s), 6/9/1983)
• ML20209D049 - Advises that branch input to reactor coolant pump seal issue no longer warranted.File on reactor coolant pump seal failures encl.LER listing of events from 1981 to present included.W/o encls. (2 page(s), 6/29/1984)
• ML20127A756 - Trip rept of 830609 visit to Westinghouse test facility in Forest Hills,PA re progress on Westinghouse Owners Group secondary seal survivability test program. (8 page(s), 6/30/1983)
• ML20127A566 - Summary of 830412 meeting w/B&W & B&W Owners Group in Bethesda,MD re reactor coolant pump seal performance under loss of cooling conditions (Generic Issue 23). (2 page(s), 4/21/1983)