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MONTHYEARML20134D4391985-08-12012 August 1985
Discusses Auxiliary Feedwater Sys.Administrative Limit of Greater than or Equal to 60% Established for Water Level in Condensate Storage Tank.Review of History of Sys Will Be Performed
Project stage: Other
ML20132B3331985-09-13013 September 1985
Requests Tech Spec Changes to Eliminate Inconsistency in Tech Spec 3.7.1.4 Requirement for Condensate Storage Tank Min Level of 47% Water & 60% Water Level Determined to Be Necessary After 850720 Auxiliary Feedwater Pump Trip
Project stage: Other
ML20137Y1861985-10-0808 October 1985
Forwards AEOD/E514, Engineering Evaluation for Core Damage Precursor Event at Trojan. Most Serious of Five Events Occurred on 840920.Events Indicate Lack of Attention to Detail & Lack of Good Maint Practices
Project stage: Other
ML20137Y1981985-10-31031 October 1985
Engineering Evaluation for Core Damage Precursor Event at Trojan
Project stage: Other
ML20137H5371985-11-25025 November 1985
Forwards Review of Auxiliary Feedwater Sys for Reliability Improvements. List of Sys Mods & Schedule for Completion of Mods Encl.License Change Application Will Be Submitted to Add safety-related Surveillance Requirements
Project stage: Other
ML20137H5981985-11-30030 November 1985
Review of Auxiliary Feedwater Sys for Reliability Improvements
Project stage: Other
ML20203N8451986-04-29029 April 1986
Forwards Description of Effects of Planned Auxiliary Feedwater Sys Mods on Long-Term Recommendations GL-2 & GL-4, SRP Section 10.4.9 & Fsar.Sys Mods Scheduled for 1986 Refueling Outage Which Started on 860416
Project stage: Other
ML20203L3241986-08-21021 August 1986
Discusses Status of Action Items Re Auxiliary Feedwater Sys Mods,Per Util .All Items Scheduled for Implementation by Startup of 1986 Outage Complete,Except as Listed
Project stage: Other
ML20213F3971986-11-10010 November 1986
Safety Evaluation Supporting Util Responses Re Effects of Proposed Mods to Improve long-term Reliability of Auxiliary Feedwater Sys Per Recommentations GL-2 & GL-3
Project stage: Approval
ML20213F3821986-11-10010 November 1986
Forwards Safety Evaluation Supporting Util Responses in 851125 Rept on Auxiliary Feedwater Sys Design.Mods Consistent W/Recommendations GL-2 & GL-3 & Acceptable
Project stage: Approval
ML20214N9701986-11-24024 November 1986
Informs That Due to Problems W/Mechanical Overspeed Trip, 860821 Mod to Remove Electrical Overspeed Trip Reevaluated. Problems Identified During Setpoint Verification Testing. Electrical Overspeed Trip Will Remain Operational
Project stage: Other
1985-08-12
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PORTLANn GENEHAL ELEcTurc COMPANY 121 S. W. S A LM o N STREET PO RTLAN o, O R coon 97204 WILLI AM J. LIN DB LAD 1503)220-8875 November 24, 1986 Trojan Nuclear Plant Docket 50-344 License NPF-1 Director of Nuclear Reactor Regulation Attn:
Mr. Steven A. Varga Director, PWR-A Project Directorate No. 3 U.S. Nuclear Regulatory Commission Washington DC 20555
Dear Mr. Varga:
Auxiliary Feedwater System Our letter of August 21, 1986 provided status on a list of modifications to be made to the Auxiliary Feedwater (AFW) System. One planned modification, removal of the electrical overspeed trip (Item B.2), was being reevaluated due to problems with the mechanical overspeed trip. The problems were identified during setpoint verification testing and resulted in disassembly and overhaul of the trip mechanism.
Considering these recent difficulties and the fact that the electrical overspeed trip has not been a cause of spurious trips at the Trojan Plant, it appears prudent not to perform the modification. Therefore, the electrical overspeed trip will remain operational to provide greater assurance of AFW overspeed protection.
Sincerely, S
- A f ~f f.
n g
c:
Mr. John B. Martin (2 copies)
Regional Administrator, Region V U.S. Nuclear Regulatory Commission Mr. Lynn Frank, Director State of Oregon Department of Energy 8612040032 861124 I
PDR ADOCK 05000344 gDO P
PDR 1 O
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