Letter Sequence Request |
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Results
Other: 05000346/LER-1980-090-03, /03L-1:on 801205,setpoints for Borated Water Storage Tank Low Level Bistable BA312 & Containment Pressure Bistable BA309 Found Out of Tolerance.Caused by Component Failure.Bistables Recalibr, ML19340E991, ML19341B813, ML20002C776, ML20010J123, ML20069E493, ML20141N821, ML20265E231, ML20265E237, ML20265E241, ML20265E246, ML20265E251
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MONTHYEARML20002C7761980-12-24024 December 1980
Informs That Engineered Safety Features Actuation Sys Does Not Conform to IEEE Std 279.1971 & Constitutes Potential Failure Mode.Recommends Short Term Corrective Actions
Project stage: Other
05000346/LER-1980-090-03, /03L-1:on 801205,setpoints for Borated Water Storage Tank Low Level Bistable BA312 & Containment Pressure Bistable BA309 Found Out of Tolerance.Caused by Component Failure.Bistables Recalibr1981-01-0202 January 1981
/03L-1:on 801205,setpoints for Borated Water Storage Tank Low Level Bistable BA312 & Containment Pressure Bistable BA309 Found Out of Tolerance.Caused by Component Failure.Bistables Recalibr
Project stage: Other
ML19340E9911981-01-0909 January 1981
Forwards marked-up Electrical Drawings as Update to 810105 Request to Deautomate Incident Level 5 of Safety Features Actuation Sys.Procedure Mod Details,License Amend Request & Safety Evaluation Will Follow.W/O Encl
Project stage: Other
ML20002D1341981-01-15015 January 1981
Proposed Tech Specs Sections 3 & 4,to Permit Deautomation of Valve Shifts Caused by Incident Level 5 of Safety Features Actuation Sys.Draft Emergency & Sys Operating Procedures & Functional Description Encl
Project stage: Draft Other
ML20002D1291981-01-15015 January 1981
Application to Amend License NPF-3,changing Tech Specs to Permit Deautomation of Valve Shifts Caused by Incident Level 5 of Safety Features Actuation Sys
Project stage: Request
05000346/LER-1980-090, Forwards LER 80-090/03L-1 W/Supplemental Info Sheets1981-02-13013 February 1981
Forwards LER 80-090/03L-1 W/Supplemental Info Sheets
Project stage: Supplement
ML19341B8111981-02-24024 February 1981
Application for Amend to License NPF-3 Changing Tech Spec Section 4.5.2.d.2 & Tables 3.3-3,3.3-5 & 4-3.2
Project stage: Request
ML19341B8051981-02-24024 February 1981
Forwards Application to Amend License NPF-3 Changing Tech Specs to Provide Consistency in Terminology W/Plant Design & to Ensure Adequate Surveillance Requirements
Project stage: Request
ML19341B8131981-02-24024 February 1981
Revised Tech Spec Section 4.5.2.d.2 & Tables 3.3-3,3.3-5 & 4.3-2 Changing Surveillance Requirements Per Amend 36 to License NPF-3
Project stage: Other
ML20010J1231981-09-15015 September 1981
Forwards Response to NRC Re 801205 Inadvertent Safety Features Actuation Sys Actuation
Project stage: Other
ML20069E4931983-03-11011 March 1983
Forwards Response to Re Safety Features Actuation Sys Shared Power Supply Returns.Permanent Grounding of Power Supply Commons to Instrument Ground Will Be Provided to Resolve Channel Independence Issue
Project stage: Other
ML20265E2411985-11-0101 November 1985
Schematic Diagram:Davis Besse Safety Features Actuation System. Sheet 3 of 5.Drawing Consists of Four Aperture Cards
Project stage: Other
ML20265E2371985-11-0101 November 1985
Schematic Diagram:Davis Besse Safety Features Actuation System. Sheet 1 of 5.Drawing Consists of Three Aperture Cards
Project stage: Other
ML20265E2311985-11-0101 November 1985
Schematic Diagram:Davis Besse Safety Features Actuation System. Sheet 2 of 5.Drawing Consists of Four Aperture Cards
Project stage: Other
ML20265E2461985-11-0101 November 1985
Schematic Diagram:Davis Besse Safety Features Actuation System. Sheet 4 of 5.Drawing Consists of Three Aperture Cards
Project stage: Other
ML20265E2511985-11-0101 November 1985
Schematic Diagram:Davis-Besse Safety Features Actuation System. Sheet 5 of 5.Drawing Consists of Five Aperture Cards
Project stage: Other
ML20138Q5501985-12-17017 December 1985
Summary of 851126 Meeting W/Util,Beta & Consolidated Controls Corp in Bethesda,Md Re Proposed Changes to Safety Features Actuation Sys.Viewgraphs & List of Attendees Encl
Project stage: Meeting
ML20141N8211986-03-11011 March 1986
Confirms 860307 Submittal of Drawings 7749-E-30-5-6, Analog Module Assembly & 7749-E-30-19-7, Bistable 2 & Forwards Addl Copies,Per NRC Response to Re Safety Features Actuation Sys
Project stage: Other
ML20203N7921986-04-17017 April 1986
Forwards Safety Evaluation Accepting Proposed Mods to Safety Features Actuation Sys as Result of 801205 Actuation, Pending Successful Completion of post-mod Tests
Project stage: Approval
ML20203N9141986-04-17017 April 1986
Safety Evaluation Accepting Proposed Mods to Safety Actuation Sys Re Shared Power Supply Returns as Result of 801205 Actuation
Project stage: Approval
1981-02-24
[Table View] |
Text
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O APPLICATION FOR AMENDMENT TO FACILITY OPERATING LICENSE NO. NPF-3 FGR DAVIS-BESSE NUCLEAR POWER ST/. ? ION UNIT NO. 1 Enclosed are forty-three (43) copies of the requested changes to the Davis-Besse Nuclear Power Station Unit No. 1 Facility Operating License No. NPF-3, together with the Safety Evaluation for the requested change.
The proposed changes include Section 4.5.2.d.2 and Tables 3.3-3, 3.3-5 and 4-3.2.
~
By Yf
=-:
Vice President, Nuclear Sworn and subscribed before me this 24th day-of February, 1981.
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~Nof ary Pub'lic' LINDA L. COSTELD Nctary Pub!!c - State of Chlo
.f.iy Ccimmaien Dp;res Fen. 9,1982 8102279Q
Docket No. 50-346
't License No. NPF-3 Serial No. 691 February 24, 1981 Attachment I.
Change to Davis-Besse Nuclear Power Station Unit 1, Appendix A Technical. Specifications 4.5.2.d.2 and Tables 2.3-3, 3.3-5 and 4.3-2.
A.
Time required to Implement This change is to be effective upon NRC approval B.
Reason for Change (Facility Change Request 80-278 Rev. B)
This is to comply with R. Reid letter dted January 24, 1981, Log. No. 651.
C.
Safety Evaluation The proposed changes associated with this request include several descriptive and Surveillance Requirement changes relating to License Amendemnt No. 36.
The-additional. Surveillance Requirement under Technical Specifications, Section 4.5.2.d.2.b, calls for verifying
- the opening time of Containment Sump Suction Valves to be
$75 seconds'and verifying closing time of Borated Water
. Storage Tanks (BWST) outlet valves to be 375 seconds.
This
-requirement. replaces the previous response time of $90 seconds as specified in.T.S. Table 3.3-5 (ltem 7).
The 90 second time included 10 seconds for diesel start and 5 seconds for Safety Features Actuation System (SFAS) response time.
Therefore, the 75 second time is sufficient to open or close the necessary valves since neither the 10 second diesel start time nor the 5 second SFAS response time is included under the manual operation scheme.
The original deautomation of:SFAS Incident Level 5 was
. approved in License-Amendment No. 36 to NPF-3.
-The changes proposed here identify additional modifications,
- therefore,. this request is not an unreviewed safety question.
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