Letter Sequence Other |
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Results
Other: ML19262D021, ML19290E289, ML19296D679, ML19309A491, ML19323E338, ML19339C940, ML19343A810, ML19343A812, ML20009C533, ML20023C118, ML20028B195, ML20028E870, ML20038B523, ML20040B418, ML20040B423, ML20062A475, ML20204G206, ML20263D240, ML20263D295, ML20263D298, ML20263D301, ML20263D420, ML20263D425, ML20263D429, ML20263D430, ML20263D432, ML20263D440, ML20263D449, ML20263D456, ML20263D459, ML20263D463, ML20263D483, ML20263D494, ML20263D879, ML20263D883, ML20263D885, ML20263D888, ML20263D892, ML20263D894, ML20263D898, ML20263D901, ML20263D905, ML20263D908, ML20263D911, ML20263D913, ML20263D916, ML20263D918, ML20263D921, ML20263D924, ML20263D927... further results
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MONTHYEARML20263J0711972-07-10010 July 1972
Schematic Diagram:Bistable Trip String,Module Interlock, Test Trip Subassembly D (48 of 50), as-built
Project stage: Other
ML20263J0781972-07-10010 July 1972
Schematic Diagram:Bistable Trip String,Module Interlock, Test Trip Subassembly C
Project stage: Other
ML20263J0731972-07-10010 July 1972
Schematic Diagram:Bistable Trip String,Module Interlock, Test Trip Subassembly a, as-built
Project stage: Other
ML20263J0751972-07-18018 July 1972
Schematic Diagram:Bistable Trip String,Module Interlock, Test Trip Subassembly B (46 of 50), as-built
Project stage: Other
ML20263J0831979-06-0606 June 1979
Piping & Instrument Diagram HP & Auxiliary Turbines System. Sheet 1 of 3.Revision Date Illegible
Project stage: Other
ML19208D6001979-09-20020 September 1979
Summary of 790830 Meeting W/Utils in Bethesda,Md Re Preliminary Results of Auxiliary Feedwater Sys Reliability Study
Project stage: Meeting
ML19250A8351979-10-18018 October 1979
Responds to Requiring Util Commitment to Action Re NUREG-0578, TMI-2 Lessons Learned Task Force Status Rept. Forwards Implementation Plan
Project stage: Request
ML19210D9031979-11-19019 November 1979
Responds to NRC 791030 Request for Review of Util 791018 Response to NUREG-0578 Re Auxiliary Feedwater Sys.Sys Satisfies NRC short-term Position.Backup Capabilities Ensure That Water Reaches once-through Steam Generator
Project stage: Request
ML16138A4231979-12-17017 December 1979
Notification of 791220 Meeting W/B&W & B&W Licensees in Bethesda,Md to Discuss Control Rod Guide Tube Wear
Project stage: Request
ML19290E2891980-02-19019 February 1980
Forwards Auxiliary Sys Branch Position Re Auxiliary Feedwater Sys & Request for Adddl Info as Part of Followup to B&W 1979 Plant Shutdown Orders
Project stage: Other
ML19305A9911980-02-23023 February 1980
Summary of 800212 & 791129 Meetings W/Licensee in Bethesda, MD Re long-term Upgrading Requirements for Site Auxiliary Feedwater Sys
Project stage: Meeting
ML16245A4951980-02-24024 February 1980
Summary of 791108 Meeting W/B&W Owners Group in Bethesda,Md Re Responses to IE Bulletin 79-05C
Project stage: Meeting
ML19296D6791980-02-26026 February 1980
Forwards Comments & Requirements for Continued Facility Auxiliary Feedwater Sys Upgrade.Commitment to Provide Requested Info &/Or Design Mods Must Be within 15 Days
Project stage: Other
ML19309A4911980-03-18018 March 1980
Responds to NRC Re Requirements for Continued Upgrade of Auxiliary Feedwater Sys.Util Will Update Auxiliary Feedwater Reliability Study & Will Submit New Tech Specs by 800501
Project stage: Other
ML19262D0211980-04-14014 April 1980
Withdraws 800308 Commitment Concerning Part B,Item 9 of NRC Re Proposed Mod of Auxiliary Feedwater Sys Operating Procedure A.51.Approval Would Imply Plant Could Be Safely Shutdown W/O Offsite Power or Diesel Generators
Project stage: Other
ML20263J0951980-04-21021 April 1980
Plant Areas Conduit Arrangement Plan at Turbine Deck. Sheet 2 of 2
Project stage: Other
ML20263J0911980-04-21021 April 1980
Turbine Building Arfa II Conduit & Tray Arrangement Plan at Ground & Mezzanine Floor. Sheet 2 of 2
Project stage: Other
ML20263J0991980-04-21021 April 1980
Turbine Building Area Conduit & Tray Arrangement Plan at Mezzanine Floor. Sheet 2 of 2
Project stage: Other
ML20263J1011980-04-21021 April 1980
Turbine Building Area Conduit & Tray Arrangement Plan at Ground Floor. Sheet 1 of 1
Project stage: Other
ML20263J1041980-04-21021 April 1980
Auxiliary Building Area - B Class II Conduits & Class I & II Tray Arrangement - Plan at Turbine Deck. Sheet 1 of 1
Project stage: Other
ML20263J0631980-04-25025 April 1980
885-NI/RPS - Schematic Turbine Trip Subassembly C
Project stage: Other
ML19323E3381980-05-14014 May 1980
Forwards Addl Info Re Auxiliary Feedwater Sys Per 800226 Request
Project stage: Other
ML19343A8121980-07-24024 July 1980
Auxiliary Feedwater Sys for Smud
Project stage: Other
ML20263J1081980-08-10010 August 1980
Cm&D Equipment OTSG Level Sensing
Project stage: Other
ML20263J0861980-08-20020 August 1980
Figure 3.1-1 Auxiliary Feedwater System P&Jid
Project stage: Other
ML20263J0801980-09-0808 September 1980
Piping & Instrument Diagram HP & Auxiliary Turbines System. Revision Illegible
Project stage: Other
ML20263J0681980-09-10010 September 1980
885-NI/RPS - Schematic Main Feed Water Pump Trip Subassembly a
Project stage: Other
ML20263J0661980-09-10010 September 1980
885-NI/RPS - Schematic Turbine Trip Subassembly B
Project stage: Other
ML20263J0591980-09-10010 September 1980
885-NI/RPS - Schematic Turbine Trip Subassembly C
Project stage: Other
ML20263J0561980-09-10010 September 1980
885-NI/RPS - Schematic Turbine Trip Sub Assembly
Project stage: Other
ML20263J0621980-09-10010 September 1980
885-NI/RPS - Schematic Turbine Trip Subassembly E
Project stage: Other
ML19343A8101980-11-17017 November 1980
Forwards B&W Upgraded Design, Auxiliary Feedwater Sys for Smud. Requests NRC Approval Prior to Design Freeze & Preparation of Equipment Purchase Specs on 801205.Oversize Drawings Available in Central Files
Project stage: Other
ML19339C9401981-01-22022 January 1981
Advises That Util 801117 Preliminary Auxiliary Feedwater Sys Upgrade Design Is Acceptable.Licensee Must Provide Schedules for Design Submittals,Tech Specs & Final Implementation
Project stage: Other
ML20263J1181981-02-20020 February 1981
EFIC Logic 3 Steam Generator Pressure
Project stage: Other
ML20263J1241981-02-20020 February 1981
EFIC Logic 6 Vector Logic
Project stage: Other
ML20263J1291981-02-20020 February 1981
EFIC Logic 5 Initiate Logic
Project stage: Other
ML20263J1211981-02-20020 February 1981
Trip Logic
Project stage: Other
ML20263J1321981-02-20020 February 1981
EFIC Trip Test Philosophy
Project stage: Other
ML20263J1261981-02-20020 February 1981
EFIC Logic 12 Steam Generator Control
Project stage: Other
ML20263J1421981-02-20020 February 1981
EFIC Symbology
Project stage: Other
ML20263J1101981-02-20020 February 1981
EFIC Logic 1 Steam Generator a Level Input
Project stage: Other
ML20263J1141981-02-20020 February 1981
EFIC Logic 2 Steam Generator B Level Input
Project stage: Other
ML20040B4231981-04-30030 April 1981
Auxiliary Feedwater Sys Upgrade Reliability Analysis for Rancho Seco Nuclear Generating Station Unit 1
Project stage: Other
ML20009C5331981-07-17017 July 1981
Repeats & Notarizes Util 810713 Response to NRC 810210 Generic Ltr 81-14 Re Seismic Qualification of Auxiliary Feedwater Sys
Project stage: Other
ML20263J1531981-09-0808 September 1981
One Line Diagram 4160 Volt System. Sheet 6.No Revision Date
Project stage: Other
ML20263J0881981-09-0808 September 1981
Anticipatory Reactor Trip System Instrument Installation. Sheet 1 of 2
Project stage: Other
ML20263J1481981-09-0808 September 1981
One Line Diagram 4160 Volt System. Sheet 7.No Revision Date
Project stage: Other
ML20038B5231981-11-30030 November 1981
Forwards Auxiliary Feedwater Sys Flow Evaluation Verifying That Existing Flow Capacity Is Adequate to Meet Sys Requirements Per ALAB-655 & NRC .Abnormal Transient Operator Guidelines Will Be Submitted by 820701
Project stage: Other
ML20040B4181982-01-18018 January 1982
Forwards Auxiliary Feedwater Sys Upgrade Reliability Analysis for Rancho Seco Nuclear Generating Station Unit 1. Rept Provides Info Requested in NUREG-0737 Item II.E.1.1
Project stage: Other
ML20028E8791982-07-0606 July 1982
Responds to 820507 Request for Addl Info Re Seismic Qualifications of Auxiliary Feedwater Sys.Seismic Qualifications Described for Items Questioned
Project stage: Request
1980-04-21
[Table View] |
Text
.asuun SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 s street Box 15830, sacramento, Cahfornia 95813 (916) 452-3211 npril 14, 1980 Director of Nuclear Reactor Regulation ATTN: Mr. Robert W. Reid, Chief Operating Reactors, Branch 4 U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Docket No. 50-312 Rancho Seco Nuclear Generating Station, Unit No. 1
Dear Mr. Reid:
You,- February 26, 1980 letter titled, "NRC Requirements for the Continued Upgrade of the Rancho Seco Auxiliary Feedwater (AFU) System" required that the District, on loss of all AC power (offsite and both diesel generators), station an operator at the AFW flow control valves.
The District's response of March 18, 1980 agreed to such a procedural requirement.
Auxiliary Feedwater System Operating Procedure A.51 was modified to address this operating mode in detail. The Plant Review Committee (PRC) and the Management Safety Review Committee (MSRC) dic not approve the procedure change. Both the PRC and the MSRC determined that such action would be inappropriate because: a) approval would imply that Rancho Seco can be safely shutdown without offsite power and without both diesel generators (two active failures), and b) this action sould be inappropriate for a single failure.
Rancho Seco was designed to satisfy the single failure require-ment for power supplies of General Design Criteria (GDC) 34 of Appendix A to Title 10 of the Code of Federal Regulations, Part 50.
Implication that Rancho Seco can be safely shutdown in situations beyond tnese boundaries is not prudent.
The Rancho Seco Auxiliary Feedwater System has been reviewed
- everal t'mes during the last year. These extensive reviews by both the Inspection and Enforcement Srancn and your staff recognize the many qualities which make the Rancho Seco System very reliable within the boundaries of coth the design criteria anc the realm of reasonab y possible accidents.
\\
,0 kO 8004220 568
4 Mr. Robert Reid April 14, 1980 The District thereftre withdraws its March 8,1980 commitment with respect to Part B, Item 9 of your February 26, 1980 letter.
If you have questions related to this position, please contact me.
Sincerely, ha NA
, John J. Mattimoe Assistant General Manager and Chief Engineer
.