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Category:Letter
MONTHYEARML24267A2962024-10-0101 October 2024 Summary of Conference Call Regarding Steam Generator Tube Inspections ML24263A1712024-09-20020 September 2024 Environmental Request for Additional Information ML24240A1692024-09-18018 September 2024 Cy 2023 Summary of Decommissioning Trust Fund Status ML24219A4202024-09-12012 September 2024 Change in Estimated Hours and Review Schedule for Licensing Actions Submitted to Support Resumption of Power Operations (Epids L-2023-LLE-0025, L-2023-LLM-0005, L-2023-LLA-0174, L-2024-LLA-0013, L-2024-LLA-0060, L-2024-LLA-0071) IR 05000255/20244022024-09-0606 September 2024 Public: Palisades Nuclear Plant - Decommissioning Security Inspection Report 05000255/2024402 PNP 2024-029, Notice of Payroll Transition at Palisades Nuclear Plant2024-08-15015 August 2024 Notice of Payroll Transition at Palisades Nuclear Plant IR 05000255/20240022024-08-0909 August 2024 NRC Inspection Report No. 05000255/2024002 PNP 2024-030, Update Report for Holtec Decommissioning International Fleet Decommissioning Quality Assurance Program Rev. 3 and Palisades Transitioning Quality Assurance Plan, Rev 02024-08-0202 August 2024 Update Report for Holtec Decommissioning International Fleet Decommissioning Quality Assurance Program Rev. 3 and Palisades Transitioning Quality Assurance Plan, Rev 0 PNP 2024-032, Supplement to License Amendment Request to Revise Selected Permanently Defueled Technical Specifications Administrative Controls to Support Resumption of Power Operations2024-07-31031 July 2024 Supplement to License Amendment Request to Revise Selected Permanently Defueled Technical Specifications Administrative Controls to Support Resumption of Power Operations ML24206A0572024-07-25025 July 2024 PRM-50-125 - Letter to Alan Blind; Docketing of Petition for Rulemaking and Sufficiency Review Status (10 CFR Part 50) PNP 2024-033, Response to Request for Additional Information - License Amendment Request to Revise the Palisades Nuclear Plant Site Emergency Plan to Support Resumption of Power Operations2024-07-24024 July 2024 Response to Request for Additional Information - License Amendment Request to Revise the Palisades Nuclear Plant Site Emergency Plan to Support Resumption of Power Operations PNP 2024-031, Response to RIS 2024-01, Preparation and Scheduling of Operator Licensing Examinations2024-07-18018 July 2024 Response to RIS 2024-01, Preparation and Scheduling of Operator Licensing Examinations IR 05000255/20240112024-07-15015 July 2024 Nuclear Plant - Restart Inspection Report 05000255/2024011 PNP 2024-027, Supplement to License Amendment Request to Revise Renewed Facility Operating License and Permanently Defueled Technical Specifications to Support Resumption of Power Operations2024-07-0909 July 2024 Supplement to License Amendment Request to Revise Renewed Facility Operating License and Permanently Defueled Technical Specifications to Support Resumption of Power Operations ML24137A0142024-07-0202 July 2024 OEDO-24-00011 - 2.206 Petition for Misuse of Palisades Decommissioning Trust Fund (EPID L-2023-CRS-0008) - Letter ML24183A1382024-07-0202 July 2024 Tribal Letter - Lac Du Flambeau Band of Lake Superior Chippewa Indians ML24183A1552024-07-0101 July 2024 Tribal Letter - Red Lake Band of Chippewa Indians ML24156A0222024-07-0101 July 2024 Initiation of Scoping Process to Prepare an Environmental Assessment for the Environmental Review of Holtec Decommissioning International, Llc’S Licensing and Regulatory Requests for Reauthorization of Power Operations at Palisades EPID L-2 ML24183A1542024-07-0101 July 2024 Tribal Letter Red Cliff Band of Lake Superior Chippewa Indians ML24152A1992024-07-0101 July 2024 Richie Garcia, Water Filtration Supervisor-Palisades-NOI to Conduct Scoping Process and Prepare an EA EPID No. L-2024-LNE-0003 Docket No. 50-0255 ML24172A0032024-07-0101 July 2024 Letter to L. Powers, Mackinac Bands of Chippewa and Ottawa Indians Re Initiation of Scoping Process for Environ Review Holtec Decommissioning Intl, LLC Request for Reauthorization of Power Ops-Palisades ML24183A1332024-07-0101 July 2024 Tribal Letter-Forest County Potawatomi Community ML24183A1582024-07-0101 July 2024 Tribal Letter Sault Ste. Marie Tribe of Chippewa Indians ML24183A1302024-07-0101 July 2024 Tribal Letter-Chippewa Cree Indians of the Rocky Boys Reservation ML24183A1572024-07-0101 July 2024 Tribal Letter - Saint Croix Chippewa Indians of Wisconsin ML24183A1282024-07-0101 July 2024 Tribal letter-Bay Mills Indian Community ML24183A1532024-07-0101 July 2024 Tribal Letter Quechan Tribe of the Fort Yuma Indian Reservation ML24183A1462024-07-0101 July 2024 Tribal letter-Mille Lacs Band of Ojibwe ML24183A1492024-07-0101 July 2024 Tribal Letter - Pokagon Band of Potawatomi Indians ML24183A1422024-07-0101 July 2024 Tribal Letter-Little Traverse Bay Bands of Odawa Indians ML24183A1312024-07-0101 July 2024 Tribal Letter-Citizen Potawatomi Nation ML24163A0552024-07-0101 July 2024 Rebecca Held Knoche NOAA-Palisades-NOI to Conduct Scoping Process and Prepare an EA - EPID No. L-2024-LNE-0003-Docket No. 50-0255 ML24163A2392024-07-0101 July 2024 Sara Thompson, Michigan DNR-Palisades-NOI to Conduct Scoping Process and Prepare an EPID No. L-2024-LNE-0003-Docket No. 50-0255 ML24155A0102024-07-0101 July 2024 Quentin L. Messer Jr., Michigan Econ-Palisades-NOI to Conduct Scoping Process and Prep an EA-EPID No. L-2024-LNE-0003 Docket No.50-0255P ML24155A0032024-07-0101 July 2024 Kathy Kowal, Us EPA Region 5-Palisades-NOI to Cibdyct Scoping Process and Prepare an EA EPID L-2024-LNE-0003 ML24163A0832024-07-0101 July 2024 Ltr to R Schumaker SHPO Re Initiation of Scoping Process, Section 106 Consult for Env Rev of HDI, LLC Request for Reauth of Power Operations at Palisades Nuclear Plant ML24183A1342024-07-0101 July 2024 Tribal Letter-Grand Portage Band of Lake Superior Chippewa ML24183A1392024-07-0101 July 2024 Tribal Letter-Lac Vieux Desert Band of Lake Superior Chippewa Indians ML24183A1272024-07-0101 July 2024 Tribal Letter-Bad River Band of the Lake Superior Tribe of Chippewa ML24183A1412024-07-0101 July 2024 Tribal Letter-Little River Band of Ottawa Indians ML24163A1922024-07-0101 July 2024 Jeremy Rubio, Dept of Env, Great Lakes and Energy, Kalamazoo District-Palisades-NOI to Conduct Scoping Process and Prepare an EA EPID No. L-2024-LNE-0003 Docket No.50-0255 ML24183A1322024-07-0101 July 2024 Tribal Letter-Fond Du Lac Band of Lake Superior Chippewa ML24183A1592024-07-0101 July 2024 Tribal letter-Sokaogon Chippewa Community ML24163A0822024-07-0101 July 2024 Ltr to J Loichinger Achp Re Initiation of Scoping Process, Section 106 Consult for Env Rev of HDI, LLC Request for Reauth of Power Operations at Palisades Nuclear Plant ML24183A1252024-07-0101 July 2024 Letter to G. Gould, Swan Creek Black River Confederated Ojibwa-Init of Scoping Process for the Env Rev of Holtec Decommissioning Intl, LLC Request for Reauth of Power Ops at Palisades ML24183A1352024-07-0101 July 2024 Tribal Letter-Hannahville Indian Community ML24183A1442024-07-0101 July 2024 Tribal Letter - Menominee Indian Tribe of Wisconsin ML24183A1502024-07-0101 July 2024 Tribal Letter - Prarie Band Potawatomi Nation ML24183A1452024-07-0101 July 2024 Tribal Letter - Miami Tribe of Oklahoma ML24152A1972024-07-0101 July 2024 Mayor Annie Brown, South Haven-Palisades-NOI to Conduct Scoping and Develop an Environmental Assessment for the Palisades Nuclear Plant Reauthorization of Power Operation 2024-09-06
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May 25, 2005 Mr. Daniel J. Malone Site Vice President Palisades Nuclear Plant Nuclear Management Company, LLC 27780 Blue Star Memorial Highway Covert, MI 49043-9530
SUBJECT:
PALISADES PLANT - RE: FINAL ACCIDENT SEQUENCE PRECURSOR ANALYSIS OF 2003 OPERATIONAL EVENT
Dear Mr. Malone:
Enclosed for your information is the final Accident Sequence Precursor (ASP) analysis of an operational event which occurred at the Palisades Plant in March 2003. The condition was reported by Licensee Event Report No. 255/03003, dated May 20, 2003, and documented in U.S. Nuclear Regulatory Commission (NRC) Inspection Report No. 05000255/2004005, dated April 8, 2004. This is being issued as a final analysis since it is a non-controversial, lower risk precursor for which the ASP results are consistent with the results from the Significance Determination Processs final evaluation of the same condition. Elimination of the review and comment resolution for this event will reduce the burden for the NRC staff and the licensee.
Sincerely,
/RA/
David H. Jaffe, Acting Project Manager, Section 1 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-255
Enclosure:
ASP Analysis cc: See next page
ML051430398 OFFICE PDIII-1/(A)PM PDIII-1/LA PDIII-1/SC NAME DJaffe THarris LRaghavan DATE 5/25/05 5/24/05 5/25/05 SUMMARIES OF FINAL ACCIDENT SEQUENCE PRECURSOR (ASP) ANALYSIS Loss of Shutdown Cooling and Emergency Diesel Generator Start at Palisades (March 2003.) This is the ASP analysis of operational conditions documented in License Event Report 255/03-003, dated May 20, 2003, and Inspection Report 05000255/2004005, dated April 8, 2004.
Condition summary: On March 25, 2003, plant maintenance workers were installing signposts in the parking lot to designate parking spaces. One of the signposts was driven into a conduit and damaged a cable which contained protective relay circuitry for all sources of offsite power. An alert was declared due to the loss of offsite power combined with the loss of shutdown cooling. The alert was downgraded to an Unusual Event after about 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> when shutdown cooling was restored.
The reported event, loss of offsite power, occurred during a refueling outage, when the reactor vessel head was open, and the cavity was flooded. The decay heat was being removed by decay heat removal (DHR) system. The event caused temporary disconnection of the alternating current (ac) power from the grid (switchyard power disconnect event) which stopped the running DHR train and auto-started emergency diesel generators.
Results: The mean conditional core damage probability (CCDP) of this event is calculated as 3 x10-6 with 5 percent and 95 percent uncertainty bounds of 3 x10-7 and 8 x10-6 , respectively.
This relatively low CCDP is due to factors such as ease of proceduralized recovery of ac power to the buses if the diesel generators did not start; long time window for core damage to occur, and various credible (but not proceduralized) recovery processes available if the DHR system did not restart. One insight that can be derived from this analysis is to proceduralize backup processes in case the normal DHR system fails during shutdown operations.
SDP/ASP comparison. The risk significance of this event has also been analyzed under the Significance Determination Process (SDP). The result was a white finding with a delta core damage frequency of 1x10-6. Thus, the ASP and SDP results are consistent.
A sensitivity analysis made as part of the ASP analysis to determine the CCDP if this event had occurred during power operation, shows that the event importance could have been as high as 4x10-5, even when credit is given for easy ac power recovery operator action in this particular case.
The ASP analysis can be found at ML051190504. If you have any questions about the analysis, please contact Selim Sancaktar (415-8184).
Palisades Plant cc:
Robert A. Fenech, Senior Vice President Michigan Department of Attorney General Nuclear, Fossil, and Hydro Operations Special Litigation Division Consumers Energy Company 525 West Ottawa St.
1945 Parnall Rd. Sixth Floor, G. Mennen Williams Building Jackson, MI 49201 Lansing, MI 48913 Arunas T. Udrys, Esquire Manager, Regulatory Affairs Consumers Energy Company Nuclear Management Company, LLC 1 Energy Plaza 27780 Blue Star Memorial Highway Jackson, MI 49201 Covert, MI 49043 Regional Administrator, Region III Director of Nuclear Assets U.S. Nuclear Regulatory Commission Consumers Energy Company 801 Warrenville Road Palisades Nuclear Plant Lisle, IL 60532-4351 27780 Blue Star Memorial Highway Covert, MI 49043 Supervisor Covert Township John Paul Cowan P. O. Box 35 Executive Vice President & Chief Nuclear Covert, MI 49043 Officer Nuclear Management Company, LLC Office of the Governor 700 First Street P. O. Box 30013 Hudson, WI 54016 Lansing, MI 48909 Jonathan Rogoff, Esquire U.S. Nuclear Regulatory Commission Vice President, Counsel & Secretary Resident Inspector's Office Nuclear Management Company, LLC Palisades Plant 700 First Street 27782 Blue Star Memorial Highway Hudson, WI 54016 Covert, MI 49043 Douglas E. Cooper Michigan Department of Environmental Quality Senior Vice President - Group Operations Waste and Hazardous Materials Division Palisades Nuclear Plant Hazardous Waste and Radiological Nuclear Management Company, LLC Protection Section 27780 Blue Star Memorial Highway Nuclear Facilities Unit Covert, MI 49043 Constitution Hall, Lower-Level North 525 West Allegan Street P.O. Box 30241 Lansing, MI 48909-7741 October 2003