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MONTHYEARIR 05000344/19870271987-07-0909 July 1987
Insp Rept 50-344/87-27 on 870622-26.No Violations or Deviations Noted.Major Areas Inspected:Usi A-26 & Followup & Closure of Previous Insp Findings
Project stage: Request
ML20235J9241987-07-10010 July 1987
Forwards Summary of Secondary Piping Inspected/Replaced During 1987 Trojan Refueling Outage.Insps Identified Numerous Locations Where Pipe Wall Thinning Occurred in Secondary Piping
Project stage: Other
ML20235W2921987-07-16016 July 1987
Forwards Questionnaire Re Erosion/Corrosion in Feedwater Pipes & Requests That Util Complete & Return within 60 Days of Ltr Receipt.Questionnaire Supports Forthcoming NRC Rept Re Surry Pipe Erosion/Corrosion Incident in Dec 1986
Project stage: Other
ML20236H8371987-07-20020 July 1987
Forwards 870716 Request for Info Re Plant Erosion/Corrosion Program.Encl Inadvertently Omitted
Project stage: Other
ML20237J6311987-08-13013 August 1987
Trip Rept of 870722-23 Site Visit to Gather First Hand Info Re Main Feedwater Line Pipe Wall Thinning Problem,Review Licensee Pipe Wall Thinning Monitoring Program & Evaluate Results of Licensee Failure Analysis
Project stage: Other
ML20237J0451987-08-19019 August 1987
Forwards Trip Rept & Informs That Assurance Provided by Licensee for Safe Operation of Facility Feedwater Sys Through End of 1988 Operating Cycle
Project stage: Other
ML20237H2911987-08-21021 August 1987
Forwards Completed Questionnaire Re Erosion & Corrosion Experience at Plant,Per NRC 870716 Request
Project stage: Other
ML20238A5661987-09-0101 September 1987
Advises That Reasonable Assurance Provided for Safe Operation of Plant Feedwater Sys Based Upon Task Force Observations & Review of Util 870731 Submittal
Project stage: Approval
ML20235G8061987-09-25025 September 1987
Summary of 870715 Meeting W/Util,Bechtel & Gao Re Main Steam Support Adequacy & Main Feedwater Pipe Thinning.List of Attendees & Util Presentation Encl
Project stage: Meeting
ML20195G9861988-06-22022 June 1988
Forwards Results of Metallurgical Evaluation of Piping Removed from Feedwater Sys,Per Commitment Made at 870715 Meeting on Feedwater Piping Erosion/Corrosion
Project stage: Meeting
1987-08-13
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Docket No. 50-344 A' G 101987 DISTRIBUTION:
J l Docket Files >
'NRC PDR Local PDR PDV r/f MEMORANDUM FOR:
Dennis F r,irsch, Director GHolahan Division of Reactor Safety and Projects TChan Region V JLee ACRS (10)
FROM:
George W. Knighton, Director OGC-Bethesda Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects
SUBJECT:
TROJAN - FEEDWATER PIPE THINNING (TAC NO. 65727)
Due to observed pipe thinning in the Trojan feedwater system,NRR established a Pipe Wall Thinning Task Force that visited Trojan on July 22-23, 1987.
Based upon the task force's observations and a submittal by the licensee dated July 31, 1987, we have determined that reasonable assurance has been provided by the licensee (Portland General Electric) for safe operation of the Trojan feedwater system through the end of the 1988 operating cycle. Details are provided by the enclosed trip report.
' Drig!nt:1::!gnsd by:
George W. Knighton George W. Knighton, Director Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects
Enclosure:
As stated l
k;b:
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LA[N V
PM/PDV U/ECEB PD/f,
Office:
Jb TChan/tg CMcCracken GKh on Surname:
Date:
08h V87 08/j )/87 08//[/87 08/ /87 8708250276 870025 ADDCK0500g4 DR
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