Letter Sequence Other |
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Results
Other: ML19350A912, ML19350A934, ML20028F484, ML20039F788, ML20042B005, ML20260H624, ML20260H629, ML20260H631, ML20260H635, ML20260H637, ML20260H642, ML20260H645, ML20260H650
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MONTHYEARML19350A9121981-03-11011 March 1981
Responds to 810127 & 0310 Requests for Westinghouse Schematic Diagrams for Review of Engineered Safety Features for Nrc.W/O Encl
Project stage: Other
ML19350A9341981-03-12012 March 1981
Responds to NRC Re Containment Purging Issue. Valves Will Be Qualified,Per NRC 790927 Guidelines,To Justify Complete Permanent Opening for Containment Venting. Completion of Any Resulting Mods Expected by June 1982
Project stage: Other
ML20260H6311981-05-15015 May 1981
Schematic Diagram:Containment Sump Pumps Discharge Isolation Valve M04180, as-built.Sheet 2
Project stage: Other
ML20260H6351981-05-15015 May 1981
Schematic Diagram:Containment Sump Pumps Discharge Isolation Valve CV4181, as-built.Sheet 1
Project stage: Other
ML20031D4001981-10-0202 October 1981
Responds to NRC 810728 Request for Valve Qualification Data & Tech Spec Changes Re Containment Purge & Vent Valves & Containment Pressure Setpoint.Qualification Data for 8-inch Valves Not Available.License Change Application Forthcoming
Project stage: Request
ML20260H6241981-10-14014 October 1981
Schematic Diagram:Containment Purge Isolation Movs, as-built
Project stage: Other
ML20039C6481981-12-0202 December 1981
Draft Override & Reset of Control Circuitry in Ventilation/ Purge Isolation & Other ESF Sys
Project stage: Draft Other
ML20236A0681981-12-0404 December 1981
Safety Evaluation Re Containment Purging & Venting During Normal Operation of Plant.Purge/Vent Sys Design & Operating Practices for Facility Acceptable Subj to Implementation of Recommended Actions
Project stage: Approval
ML20039F7881981-12-18018 December 1981
Requests Review & Comments Re Encl Technical Evaluation Rept Concerning Containment Venting & Purging.Response Requested within 60 Days of Receipt of Ltr
Project stage: Other
ML20260H6371981-12-30030 December 1981
Schematic Diagram:Sample & Containment Isolation Valves, as-built
Project stage: Other
ML20260H6291981-12-30030 December 1981
Schematic Diagram:Containment Purge Isolation Cvs, as-built
Project stage: Other
ML20260H6421982-01-0606 January 1982
Schematic Diagram:Rcdt Sample Isolation Valve
Project stage: Other
ML20260H6451982-01-0606 January 1982
Schematic Diagram:Sample Isolation Valves
Project stage: Other
ML20040H3281982-02-12012 February 1982
Forwards Response to NRC 811204 Request for Info Re Operation & Testing of Containment Purge & Hydrogen Vent Valves
Project stage: Request
ML20260H6501982-02-24024 February 1982
Schematic Diagram:Sample & Containment Isolation Valves
Project stage: Other
ML20042B0051982-03-12012 March 1982
Forwards Response to NRC Re Acceptability of Facility Esf.Eight Nonproprietary & Three Proprietary Oversize Drawings Encl.Aperture Cards in Pdr.Proprietary Drawings Withheld (Ref 10CFR2.790)
Project stage: Other
ML20028F4841983-01-25025 January 1983
Forwards Qualification Info for Replacement of Hydrogen Vent Valves,Per 811002 & 820212 Commitments
Project stage: Other
ML20197G4831984-06-0101 June 1984
Forwards Safety Evaluation Supporting Containment Hydrogen Vent Sys Isolation Valves.Generic Evaluation of Radiological Consequences of Accidents While Purging & Venting at Power Also Encl
Project stage: Approval
1981-03-12
[Table View] |
Text
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March 12, 1981 Trojan Nuclear Plant Docket 50-344 License NPF-1 f
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Director of Nuclear Reactor Regulation b
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Mr. Robert A. Clark, Chief N
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Washington, DC 20555 g
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Dear Sir:
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The Containment purging issue discussed in the NRC letter dated November 19, 1979 is currently being evaluated. The 54-inch Containment Purge System isolation valves are being maintained closed during Plant operation (Modes 1, 2, 3, and 4) as described in our letter dated November 19, 1979. In the interim, PCE is using the 8-inch Hydrogen Vent System isolation valves, open no more than 50*, for Containment venting during normal operation. These valves will be qualified in accordance with the guidelines provided in the September 27, 1979 NRC letter in order to justify complete opening for Containment venting on a permanent basis. Qualification testing is scheduled for the last quarter of 1981, with any resulting modifications being completed by June 1982.
The above schedules are based on estimated times for test procedure development, material delivery, availability of testing facilities, and the assumption that only minor changes will be necessary due to testing results. Notification will be provided of any schedule revision caused by unanticipated conditions.
Sincerely, Bart D. Withers Vice President Nuclear c:
Mr. Lynn Frank, Director 0
State of Oregon
,i Depcrtment of Energy 81031 70 h [
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