Letter Sequence Other |
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Results
Other: ML20136J106, ML20137W989, ML20140D589, ML20153D518, ML20153D535, ML20154M151, ML20154N307, ML20203N882, ML20206F544, ML20214L542, ML20214L543, ML20214L552, ML20214L559
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MONTHYEARML20214L5421985-12-26026 December 1985
Confirmatory Action Ltr Re Facility Return to Power Operations.Understands Util Will Conduct Root Cause Analysis of 851226 Reactor Trip & Provide Briefing of Assessment & Justification to Resume Power Operations
Project stage: Other
ML20214L5591985-12-27027 December 1985
Forwards Proposed Plan for Facility Augmented Investigation Team.Comments Requested by 851227.Chronological Sequence of Events Re 851226 Event Also Encl
Project stage: Other
ML20136J1061986-01-0505 January 1986
PNO-IIT-86-001A:on 851226,loss of Integrated Control Sys Occurred.Caused by Simultaneous Deenergizing of All Redundant Dc Power Supplies.Licensee Preparing Action Plans for Systematic Troubleshooting.Sequence of Events Encl
Project stage: Other
ML20137J7271986-01-0606 January 1986
Notifies of 860108 Meeting W/B&W Regulatory Response Group in Bethesda,Md to Discuss 851226 Loss of Integrated Control Sys Power & Generic Implications for Other B&W Plants.Info Confirms NRC 851230 Request
Project stage: Meeting
ML20214L5551986-01-0707 January 1986
Forwards Addl Info for Use in Conjunction W/Meeting W/B&W Regulatory Response Group,Including List of Issues That Rancho Seco Incident Investigation Team Has Identified to Date Associated w/851226 Overcooling Event
Project stage: Meeting
ML20214L5521986-01-20020 January 1986
Package of Two Documents Entitled, Action List,851226 Transient
Project stage: Other
ML20140D5891986-01-24024 January 1986
Forwards Schedule for Return to Power Operations from 851226 Transient.Schedule Consists of Comprehensive Action List & Milestone Schedule.Commencement of Power Operation Scheduled for 860308
Project stage: Other
ML20214L5511986-02-0707 February 1986
Notification of Significant Licensee Meeting on 860210 W/Util in Walnut Creek,Ca to Discuss Review of Plant Restart Actions for Facility Following 851226 Event
Project stage: Meeting
ML20153D5351986-02-19019 February 1986
Description & Resolution of Issues Re 851226 Reactor Trip
Project stage: Other
ML20153D5181986-02-19019 February 1986
Forwards Summary Rept, Description & Resolution of Issues Re 851226 Reactor Trip, Supporting Resumption of Power Operation as Scheduled on 860308.Previous Actions Summarized
Project stage: Other
ML20137W9891986-02-24024 February 1986
Forwards Addendum to 860219 Summary Rept Re Resolution of Issues from 851226 Reactor Trip,Replacing Page 41.Addendum Addresses Remote Isolation Capability for Main Steam Lines, Independent of ICS Power & Controls
Project stage: Other
ML20214E3401986-03-0505 March 1986
Requests Review of Encl Tentative Review Assignments for Action Plan for Restart of Plant by 860307.Requests for Addl Info Re Encl Proposed Resolution of Issues Concerning 851226 Event Requested by 860321.W/o Encls
Project stage: Approval
ML20154M1511986-03-0606 March 1986
Staff Requirements Memo Re 860225 Briefing in Washington,Dc Concerning Incident Investigation Team Rept on 851226 Loss of Power in Integrated Control Sys.Schedules for Followup Plan & Assessment Re Lack of Plant Mods Requested
Project stage: Other
ML20214L5431986-03-10010 March 1986
Viewgraphs Entitled, Smud
Project stage: Other
ML20154N3071986-03-12012 March 1986
Forwards Design Basis Rept for Mods to Facility Based on 851226 Transient
Project stage: Other
ML20199D7561986-03-17017 March 1986
Notification of 860324 & 25 Meetings & Plant Trip W/Util in Herald,Ca to Discuss Proposed Plans for Recovery from 851226 Incident.Agenda Encl
Project stage: Meeting
ML20203H2181986-04-14014 April 1986
Summary of 860205 Meeting W/B&W Owners Group in Bethesda,Md Re B&W Owners Group Ongoing Programs & Activities & 850609 & 1226 Transients at Davis Besse & Rancho Seco,Respectively. Attendance List & Handout Incl
Project stage: Meeting
ML20210R9391986-04-23023 April 1986
Summary of 860324-25 Meetings W/Util Re Plans to Recover from 851226 Overcooling Event.Preparation of Comprehensive Recovery Plan,Demonstrating Safe & Reliable Plant Operation, Needed for NRC Restart Approval.Viewgraphs Encl
Project stage: Meeting
ML20210R9331986-04-23023 April 1986
Forwards Summary of 860324-25 Onsite Meetings W/Util Re Plans for Recovery from 851226 Overcooling Event. Comprehensive Restart Rept,Demonstrating Correction of Plant Design Programmatic & Organizational Deficiencies,Expected
Project stage: Meeting
ML20203N8821986-04-24024 April 1986
Discusses NUREG-1195, Loss of Integrated Control Sys Power & Overcooling Transient at Rancho Seco on 851226. Minor Technical Corrections to & Comments on Misperceptions in Incident Investigation Team Rept Encl
Project stage: Other
ML20210N9891986-04-25025 April 1986
Responds to 860313 Memo Re Identification & Assignment of Responsibilities for Generic & plant-specific Actions Resulting from Investigation of 851226 Incident.Summary of Plans,Schedule,Status & Draft Action Plan Encl
Project stage: Draft Other
ML20198B8301986-05-12012 May 1986
Comments on Adequacy,Scope & Direction of 860418 Meeting W/ Util Re Plant Performance & Mgt Improvement Program Addressing Broad Range of Issues Affecting Restart & Safe & Reliable Operation in Response to 851226 Transient
Project stage: Meeting
ML20198B4341986-05-14014 May 1986
Summary of 860418 Meeting W/Util in Bethesda,Md Re Util Proposed Plant Performance & Mgt Improvement Program in Light of 851226 Transient.List of Attendees & Viewgraphs Encl
Project stage: Meeting
ML20206F5441986-05-29029 May 1986
Forwards List of Open Items,Including 851226 Overcooling Event Concerns,Requiring Util Action Per 860523 Telcon.Items Listed in Areas a & B Should Be Addressed in Restart Rept
Project stage: Other
ML20214L5481987-05-30030 May 1987
Agenda for 860210 Meeting W/Nrc to Discuss Facility 851226 Transient
Project stage: Meeting
1986-03-12
[Table View] |
Text
IN RESPONSE, PLEASE c#'
REFER TO:
M860225 UNITED STATES i
NUCLEAR REGULATORY COMMISSION M
g j
W ASHINGTON, D.C. 20655 March 6, 1986 OFFICE OF THE SECR ETARY s
MEMORANDUM FOR:
Victor Stello, Jr.
Acting Executive Directo 3 or Operations 7
FROM:
Samuel J. Chilk, Secretar K
SUBJECT:
STAFF REQUIREMENTS - BRI E@kNGBY'1NCIDENT INVESTIGATION TEAM ON STATUS OF RANCHO SECO, TUESDAY, FEBRUARY 25, 1986, COMMISSIONERS' CONFERENCE ROOM, D.C. OFFICE (OPEN TO PUBLIC ATTENDANCE)
The Commission
- met to be briefed by staff on the loss of DC power in the integrated control system (ICS) event which occurred at the Rancho Seco Nuclear Power Plant on December 26, 1985.
Chairman Palladino requested information on whether or not the Rancho Seco plant has a reactor water level indicator.
(NRR)
(SECY Suspenre:
3/14/86)
Chairman Palladino also requested the staff to respond on why the emergency feedwater initiation and control (EFIC) system has not been installed at Rancho Seco.
Commissioner Bernthal requested information on the significance of the EFIC system in terms of overall plant safety.
(NPR)
(SECY Suspense:
3/14/86)
Chairman Palladino requested the staff to provide the following:
1.
schedule for follow-up plan; 2.
schedule for staff recommendations on corrective action:
3.
schedule for staf f assessment as to why plant modifications which should have been done were not done; 4.
status of confirmatory orders or letters requiring the plant to remain shut down until NRC is satisfied that corrective actions are completed; and
- Commissioner Roberts was not present.
l 8603130336 860306 PDR 10CFR PT9.7 PDR
~o 5.
information on whether the licensee is planning a submittal for the Commission and, if so, when.
(NRR)
(SECY Suspense:
3/14/86)
Chairman Palladino indicated that a follow-on meeting with staff and, possibly, a meeting with the Sacramento Municipal Utility District (SMUD) would be scheduled following receipt of staff's follow-up plan.
ec:
Chairman Palladino Commissioner Roberts Commissioner Asselstine Commissioner Bernthal Commissioner Zech Commission Staff Offices PDR - Advance DCS - 016 Phillips 1
- -