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Category:Memoranda
MONTHYEARML24222A6992024-08-16016 August 2024
August 6, 2024, Summary of Regarding Potential License Amendment Request Change to Surveillance Requirements for Moderator Temperature Coefficient for Millstone, Unit No. 3, North Anna, Unit Nos. 1 and 2, and Summer, Unit No. 1 -
ML22130A1702022-05-20020 May 2022
Summary of April 21, 2022, Public Meeting to Discuss Potential Emergency Preparedness License Amendment Request
ML22028A3502022-01-21021 January 2022
Green Mountain Power, 2021 Annual Summary of Special Nuclear Committee
ML21027A0232021-01-28028 January 2021
Summary of January 26, 2021 Closed Meeting with Dominion Energy Regarding Performance of Force on Force Exercises in a Pandemic Environment
ML19165A1192019-06-14014 June 2019
Memoranda to File Environmental Assessment and Finding of No Significant Impact for the Virginia Electric and Power Company, Dominion Energy Kewaunee, Inc., and Dominion Nuclear Connecticut, Inc.'S Decommissioning Funding Plans Submitted
ML17271A0532017-09-29029 September 2017
2017 Summary of Annual Decommissioning Funding Status Reports for Reactors in Decommissioning
ML16088A2042016-03-28028 March 2016
Memo T Bowers from s Ruffin, Technical Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations W/ Encl 2 (Template)
ML16088A2052016-03-28028 March 2016
Enclosure 1 - (72.30 DFP Reviews to Be Completed 2015) - Memo T Bowers from s Ruffin, Technial Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations
ML15075A1922015-03-26026 March 2015
Reactor Coolant System Alloy 600 Inspection Program for License Renewal Commitment No. 14. (Tac No. MF3433)
ML13031A1832013-02-0505 February 2013
Closed Meeting Announcement Millstone Drop-In
ML13032A0572013-01-30030 January 2013
2012 Annual Summary of the Green Mountain Power Special Nuclear Committee
ML12178A6132012-06-27027 June 2012
Notice of Forthcoming Pre-Application Meeting with Dominion Nuclear Connecticut, Inc. to Discuss a Proposed Millstone Power Station, Unit 2, License Amendment Request Concerning Spent Fuel Pool Criticality Re-Analysis
ML13196A2202012-06-0606 June 2012
Memo from B. Balsam, NRR and D. Logan, NRR to J. Susco, NRR on Summary of Section 7 Consultation Activities Related to the National Marine Fisheries Service'S Final Rule to List the Atlantic Sturgeon
ML11271A1782011-10-0303 October 2011
Review of Topical Report, Revision 11 for Kewaunee Power Station and ISFSI, Millstone Power Station, Units 1, 2, & 3 and ISFSI, North Anna Power Station, Units 1 & 2 and ISFSI, Surry Power Station, Units 1 & 2 and ISFSI (Tac ME6649, ME6650,
ML11250A1712011-09-14014 September 2011
Notice of Forthcoming Meeting with Petitioner Requesting Action Under 10 CFR 2.206 Regarding Immediate Suspension of the Operating Licenses of General Electric (GE) Mark 1 Boiling Water Reactors (Bwrs)
ML1116804602011-06-30030 June 2011
Review of Commitment Change Report for 2009
ML1103106822011-02-0101 February 2011
Revised Notice of Forthcoming Public Meeting with Dominion Nuclear Connecticut, Inc., to Discuss Millstone Power Station Licensing Activities
ML1100701752011-01-11011 January 2011
Request for Technical Assistance on Request for Exemption Form Certain Requirements of 10 CFR 73.55 for Millstone Power Station, Unit 1
ML1035103202010-12-20020 December 2010
30-Day Report of Emergency Core Cooling System Model Change
ML1033305502010-12-15015 December 2010
Potential Notice of Enforcement Discretion for the Turbine Driven Auxiliary Feedwater Pump
ML1031202422010-11-0808 November 2010
Notice of Teleconference with Dominion Nuclear Connecticut, Inc. to Discuss Millstone Power Station, Unit No. 3 Generic Letter 2004-02 Supplemental Response
ML1030100732010-10-28028 October 2010
Meeting Notice Milestone Power Station Revised 10 CFR 73.55
ML1019502842010-07-14014 July 2010
Notice of Forthcoming Public Teleconference with Dominion Nuclear Connecticut, Inc. to Discuss Millstone Power Station, Unit No. 3 Generic Letter 2004-02 Supplemental Response
ML1008204222010-03-26026 March 2010
Notice of Conference Call with Dominion Nuclear Connecticut, Inc. to Discuss Millstone Power Station, Unit Nos 2 and 3 Generic Letter 2004-02 Supplemental Responses
ML1003314992010-03-0101 March 2010
Notice of Conference Call with Dominion Nuclear Connecticut, Inc., to Discuss Millstone Power Station, Unit Nos. 2 and 3 Generic Letter 2004-02 Supplemental Responses
ML0931406252009-11-17017 November 2009
Summary of Teleconference Verbal Authorization for Relief Request RR-89-67
ML0913401332009-05-15015 May 2009
Notice of Forthcoming Meeting with Dominion Nuclear Connecticut, Inc. to Discuss the Submittal of a License Amendment Request Regarding the Removal of Charging Pumps from the Technical Specifications for Millstone Power Station, Unit No. 2
ML0906205722009-03-0303 March 2009
Meeting Minutes of the Power Uprates Subcommittee, July 8, 2008
ML0811500912008-04-23023 April 2008
Proposed Stretch Power Uprate to Millstone Power Station, Unit 3
ML0807400842008-03-14014 March 2008
Draft Regulatory Guide for Comment
ML0734708412007-12-11011 December 2007
Drop-In Visit from Dominion (Millstone)
ML0730304052007-10-31031 October 2007
E. Marinos Memo Technical Assistance Request-Dominion Resources, Inc.'S December 6, 2006, Request for Exemption from 10 CFR 74.13(a) Requirements Regarding Material Status Report Submittal Time Frame
ML0715100542007-05-31031 May 2007
Closeout of TAC Numbers for Licensing Activities That Do Not Require Staff Review
ML0710201942007-04-24024 April 2007
Draft Open Items from Staff Audit of Corrective Actions to Address Generic Letter 2004-02
ML0707902492007-03-20020 March 2007
Facsimile Transmission, Draft Request for Additional Information Regarding Steam Generator Tube Integrity
ML0634902692007-01-11011 January 2007
Memo: K. Mcconnell to M. Lesar - Notice of Environmental Assessment and Finding of No Significant Impact Related to Partial Exemption from 10 CFR Part 50, Recordkeeping Requirements - Millstone Power Station, Unit 1
ML0633901162006-12-19019 December 2006
Fax - Draft Request for Additional Information Regarding Post-Maintenance/Modification Surveillance Requirements
ML0630701472006-12-12012 December 2006
Facsimile Transmission, Draft Request for Additional Information
ML0631101502006-11-13013 November 2006
Request for Additional Information Regarding Human Factors - Millstone, Unit 2, Alternate Source Term License Amendment Request
ML0626800242006-10-0202 October 2006
Transfer of Project Management Responsibilities
ML0625100662006-09-29029 September 2006
Facsimile Transmission, Draft Request for Additional Information Regarding Extension of Integrated Leakage Rate Test Interval
ML0619500042006-07-14014 July 2006
Facsimile Transmission, Draft Request for Additional Information Regarding Post Maintenance/Modification Surveillance Requirements
ML0619500092006-07-14014 July 2006
Facsimile Transmission, Draft Request for Additional Information Regarding Relaxation Request IR-2-46, Reactor Pressure Vessel Head Inspections
ML0617805592006-07-10010 July 2006
Revised Closeout Letter for Bulletin 2003-01, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors.
ML0617701952006-06-26026 June 2006
Closeout of Tac Number for Licensing Activities Incorrectly Identified for Staff Review
ML0606702532006-03-24024 March 2006
Facsimile Transmission, Draft Request for Additional Information to Be Discussed in an Upcoming Conference Call
ML0608601632006-03-21021 March 2006
Handouts to Applicants (Folder 3)
ML0604005082006-03-0202 March 2006
Facsimile Transmission, Draft Request for Additional Information to Be Discussed in an Upcoming Conference Call
ML0602700882006-01-31031 January 2006
Facsimile Transmission Draft Request for Additional Information to Be Discussed in an Upcoming Conference Call (Tac No. MC8327)
ML0602502612006-01-26026 January 2006
Facsimile Transmission, Draft Request for Additional Information to Be Discussed in an Upcoming Conference Call
2024-08-16
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Text
November 13, 2006 MEMORANDUM TO: Harold K. Chernoff, Chief Plant Licensing Branch I-2 (LPL1-2)
Office of Nuclear Reactor Regulation
/RA/
FROM: Nancy L. Salgado, Chief Operator Licensing and Human Performance Branch (IOLB)
Office of Nuclear Reactor Regulation
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING HUMAN FACTORS - MILLSTONE UNIT 2 ALTERNATE SOURCE TERM LICENSE AMENDMENT REQUEST By letter dated June 13, 2006, Dominion Nuclear Connecticut, Inc. (DNC) requested a license amendment for Millstone Power Station Unit 2 (MPS2). Specifically, DNC requested changes to certain technical specifications for MPS2, based on an analysis associated with using an alternate source term. Contained within DNC's alternate source term analysis were changes associated with two manual operator actions:
- 1. Approve a timing change to an existing operator action, such that within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of control room isolation, instead of within the currently credited time of 10 minutes, operators will place the control room emergency ventilation system in filtered recirculation.
- 2. Approve a new operator action to isolate the control room within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after a main steam line break outside containment.
For the first operator action, the timing change for placing filtered recirculation in service, no additional information is required, since DNC's request represents a relaxation of the currently credited allowed operator action time from 10 minutes to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. However, the second operator action is new, and in order to perform a human factors review, consistent with Standard Review Plan Chapter 18, "Human Factors Engineering" and NUREG-1764, "Guidance for the Review of Changes to Human Actions," information that has not been supplied by DNC is required.
CONTACT: David S. Muller, NRR/DIRS 301-415-1412
H. Chernoff New operator action for proposed credit at MPS2:
For a main steam line break outside containment (in the enclosure building or turbine building),
operator action to isolate the control room within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from the start of the event.
Questions
- 1. What specific switch manipulations will be required to isolate the control room? Are the switches and the components they operate safety-grade and with safety-grade support systems (e.g., DC control power, AC motive power, air motive power)?
- 2. Where will the switch manipulations occur?
- 3. Who will perform the manipulations required to isolate the control room?
- 4. What alarms/indications will be used in response to a main steam line break outside containment to prompt the action to isolate the control room? Where are these alarms and indications located? Are these alarms and indications safety-grade and powered from safety-grade electrical power supplies?
- 5. What alarms/indications will be used to verify success in isolating the control room? For example, damper position indicating lights, flow indicators, alarms occurring or clearing, etc.
Where are these alarms and indications located? Are these alarms and indications safety-grade and powered from safety-grade electrical power supplies?
- 6. How will the operator action to isolate the control room in response to a main steam line break outside containment be incorporated into plant procedures?
- 7. How will this new operator action to isolate the control room in response to a main steam line break outside containment be incorporated into your training programs?
Docket No. 50-336 cc: V. Nerses, NRR
ML063110150 OFFICE IOLB/DIRS BC: IOLB/DIRS NAME D. Muller N. Salgado DATE 11/09/06 11/13/06
