Letter Sequence Other |
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TAC:MD7252, Eliminate Second Completion Times Limiting Time from Discovery of Failure to Meet an LCO (Approved, Closed) |
Results
Other: ML083100134, ULNRC-05476, One-Time Completion Time Extension for Essential Service Water (ESW) System, ULNRC-05482, Response to Questions Received on February 7, 2008 Regarding Amendment to Revise Technical Specifications for Essential Service Water, ULNRC-05520, One-Time Completion Time Extension for Essential Service Water (ESW) System, (OL1281), ULNRC-05534, One-Time Completion Time Extension for Essential Service Water (ESW) System
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MONTHYEARML0725504882007-08-30030 August 2007 10 CFR 50.55a Request: Proposed Alternative to ASME Section Xi Requirements for Replacement of Class 3 Buried Piping Project stage: Request ULNRC-05445, One-Time Completion Time Extension for Essential Service Water (ESW) System2007-10-31031 October 2007 One-Time Completion Time Extension for Essential Service Water (ESW) System Project stage: Request ULNRC-05476, One-Time Completion Time Extension for Essential Service Water (ESW) System2008-02-21021 February 2008 One-Time Completion Time Extension for Essential Service Water (ESW) System Project stage: Other ML0803806472008-02-29029 February 2008 Summary of Meeting with Union Electric Company Callaway Plant, Unit 1, 8/30/2007 Relief Request and 10/31/2007 License Amendment Request Applications Related to Replacement of Essential Service Water Piping (Tac No. MD6792 and MD7252) Project stage: Meeting ULNRC-05482, Response to Questions Received on February 7, 2008 Regarding Amendment to Revise Technical Specifications for Essential Service Water2008-03-0707 March 2008 Response to Questions Received on February 7, 2008 Regarding Amendment to Revise Technical Specifications for Essential Service Water Project stage: Other ML0808800122008-03-31031 March 2008 Request for Additional Information Related to LAR to Revise TS 3.7.8, Essential Service Water System, and TS 3.8.1, AC Sources - Operating, for One-time Completion Time Extension Re Underground Piping Project stage: RAI ULNRC-05500, Response to Request for Additional Information One-Time Completion Time Extension for Essential Service Water (ESW) System2008-05-0606 May 2008 Response to Request for Additional Information One-Time Completion Time Extension for Essential Service Water (ESW) System Project stage: Response to RAI ML0815800112008-06-10010 June 2008 Request for Additional Information, Relief Request No. 13R-10 and License Amendment Request to Revise TS 3.7.8, Essential Service Water System, and TS 3.8.1, AC Sources - Operating, for One-time CT Extension Underground Piping Project stage: RAI ULNRC-05520, One-Time Completion Time Extension for Essential Service Water (ESW) System, (OL1281)2008-07-10010 July 2008 One-Time Completion Time Extension for Essential Service Water (ESW) System, (OL1281) Project stage: Other ULNRC-05534, One-Time Completion Time Extension for Essential Service Water (ESW) System2008-08-13013 August 2008 One-Time Completion Time Extension for Essential Service Water (ESW) System Project stage: Other ML0828106432008-10-31031 October 2008 Issuance of Amendment No. 186, Revise TS 3.7.8, Essential Service Water System, and TS 3.8.1, AC Sources - Operating, for One-time Completion Time Extension Re Underground Piping Project stage: Approval ML0831001342008-11-0606 November 2008 Correction to Amendment No. 186 Approving One-Time Extension of Completion Time for Inoperable Essential Service Water System and Emergency Diesel Generators Project stage: Other ML0834503272008-12-19019 December 2008 Summary of Meeting with Representatives of Union Electric Company, Licensee for Callaway Plant, Unit 1 Second Round of Requests for Information, Extension of Completion Time for Essential Service Water Systems (TAC Nos. MD6792 & MD7252) Project stage: Meeting 2008-02-29
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Category:Letter type:ULNRC
MONTHYEARULNRC-06853, Submittal of 2023 Fitness for Duty Performance Data Per Per 10 CFR 26.7172024-01-29029 January 2024 Submittal of 2023 Fitness for Duty Performance Data Per Per 10 CFR 26.717 ULNRC-06847, Supplement to Relief Request from Requirements of ASME BPV Code, Section XI, Subsection Iwl Regarding Examination and Testing of the Unbonded Post-Tensioning System (Relief Request C3R-01)2023-12-21021 December 2023 Supplement to Relief Request from Requirements of ASME BPV Code, Section XI, Subsection Iwl Regarding Examination and Testing of the Unbonded Post-Tensioning System (Relief Request C3R-01) ULNRC-06849, License Renewal Resolution for Commitments 34 and 35 Perform Evaluation of Crack Initiation and Propagation in Steam Generator Divider Plate and Tube-To-Tubesheet Welds2023-12-20020 December 2023 License Renewal Resolution for Commitments 34 and 35 Perform Evaluation of Crack Initiation and Propagation in Steam Generator Divider Plate and Tube-To-Tubesheet Welds ULNRC-06844, Request for Exemption from Specific Requirements in 2023 Security Rule, Enhanced Weapons, Firearms Background Checks, and Security Event Notification2023-12-0707 December 2023 Request for Exemption from Specific Requirements in 2023 Security Rule, Enhanced Weapons, Firearms Background Checks, and Security Event Notification ULNRC-06827, Supplement to License Amendment Request Regarding Support System Requirements for Residual Heat Removal and Control Room Air Conditioning Systems Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6 (LDCN 22-0029)2023-11-20020 November 2023 Supplement to License Amendment Request Regarding Support System Requirements for Residual Heat Removal and Control Room Air Conditioning Systems Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6 (LDCN 22-0029) ULNRC-06824, Response to Request for Additional Information Regarding Operating Quality Assurance Manual (Oqam) Revision 36A2023-08-17017 August 2023 Response to Request for Additional Information Regarding Operating Quality Assurance Manual (Oqam) Revision 36A ULNRC-06830, Transmittal of Updated Technical Specification Markup and Clean Pages for License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak2023-08-15015 August 2023 Transmittal of Updated Technical Specification Markup and Clean Pages for License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak ULNRC-06223, Minor Correction to License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate Test Frequencies (LDCN 2020-0004)2023-07-25025 July 2023 Minor Correction to License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate Test Frequencies (LDCN 2020-0004) ULNRC-06799, Submittal of Licensee Event Report 2022-003-01, Class 1E Electrical Air Conditioning System Thermal Expansion Valve Failure Resulted in Condition Prohibited by Technical Specifications2023-07-13013 July 2023 Submittal of Licensee Event Report 2022-003-01, Class 1E Electrical Air Conditioning System Thermal Expansion Valve Failure Resulted in Condition Prohibited by Technical Specifications ULNRC-06821, Post-Audit Follow-Up Information in Support of Callaway'S License Amendment Request and Proposed Exemption to Allow Use of Framatome Gaia Fuel (LDCN 22-0002) (EPID L-2022-LLA-0150 and EPID L-2022-LLE-00301)2023-06-21021 June 2023 Post-Audit Follow-Up Information in Support of Callaway'S License Amendment Request and Proposed Exemption to Allow Use of Framatome Gaia Fuel (LDCN 22-0002) (EPID L-2022-LLA-0150 and EPID L-2022-LLE-00301) ULNRC-06822, Additional Information Regarding Request for NRC Approval of Operating Quality Assurance Manual (Oqam) Revision 36a2023-06-14014 June 2023 Additional Information Regarding Request for NRC Approval of Operating Quality Assurance Manual (Oqam) Revision 36a ULNRC-06815, Request for NRC Approval of Operating Quality Assurance Manual, Revision 36a2023-06-0505 June 2023 Request for NRC Approval of Operating Quality Assurance Manual, Revision 36a ULNRC-06818, Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate .2023-06-0505 June 2023 Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate . ULNRC-06816, Withdrawal of Previously Submitted Enclosures Regarding License Amendment Request for Adoption of Alternative Source Term and Revision of Technical Specifications (LDCN 21-0015)2023-05-0909 May 2023 Withdrawal of Previously Submitted Enclosures Regarding License Amendment Request for Adoption of Alternative Source Term and Revision of Technical Specifications (LDCN 21-0015) ULNRC-06812, Submittal of 2022 Annual Radiological Environmental Operating Report2023-04-27027 April 2023 Submittal of 2022 Annual Radiological Environmental Operating Report ULNRC-06806, Submittal of Radiological Emergency Response Plan, Revision 552023-04-12012 April 2023 Submittal of Radiological Emergency Response Plan, Revision 55 ULNRC-06807, Submittal of Single Positive Test Forms2023-04-0303 April 2023 Submittal of Single Positive Test Forms ULNRC-06798, Submittal of Status of Plant Decommissioning Funding and ISFSI Decommissioning Funding Plan2023-03-30030 March 2023 Submittal of Status of Plant Decommissioning Funding and ISFSI Decommissioning Funding Plan ULNRC-06801, CFR 50.46 Annual Report Regarding ECCS Evaluation Model Revisions2023-03-30030 March 2023 CFR 50.46 Annual Report Regarding ECCS Evaluation Model Revisions ULNRC-06804, Submittal of Nuclear Property Insurance Reporting2023-03-29029 March 2023 Submittal of Nuclear Property Insurance Reporting ULNRC-06751, Application to Revise Technical Specifications to Adopt TSTF-501-A, Rev. 1, Relocate Stored Oil & Lube Oil Volume Values to Licensee Control2023-03-29029 March 2023 Application to Revise Technical Specifications to Adopt TSTF-501-A, Rev. 1, Relocate Stored Oil & Lube Oil Volume Values to Licensee Control ULNRC-06803, Submittal of Response to Request for Additional Information Regarding Results of Steam Generator Tube In-Service Inspection2023-03-29029 March 2023 Submittal of Response to Request for Additional Information Regarding Results of Steam Generator Tube In-Service Inspection ULNRC-06805, Transmittal of Special Report 2023-02 Non-Functionality of Containment Hydrogen Analyzer Channel for Greater than 30 Days2023-03-21021 March 2023 Transmittal of Special Report 2023-02 Non-Functionality of Containment Hydrogen Analyzer Channel for Greater than 30 Days ULNRC-06802, Special Report 2023-01 (PAM Report); Non-Functionality of a Post-Accident Monitoring Instrument2023-03-0909 March 2023 Special Report 2023-01 (PAM Report); Non-Functionality of a Post-Accident Monitoring Instrument ULNRC-06795, Submittal of Fitness for Duty Reports for 2022, Including Single Positive Test Forms2023-01-24024 January 2023 Submittal of Fitness for Duty Reports for 2022, Including Single Positive Test Forms ULNRC-06794, Submittal of Fitness for Duty Program Data for 20222023-01-24024 January 2023 Submittal of Fitness for Duty Program Data for 2022 ULNRC-06787, Response to Request for Additional Information Regarding License Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015)2022-12-0808 December 2022 Response to Request for Additional Information Regarding License Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015) ULNRC-06781, License Amendment Request to Clarify Support System Requirements for the Residual Heat Removal System and Control Room Air Conditioning System Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6 (LDCN 22-0029)2022-12-0101 December 2022 License Amendment Request to Clarify Support System Requirements for the Residual Heat Removal System and Control Room Air Conditioning System Under Technical Specifications 3.4.8, 3.7.11, and 3.9.6 (LDCN 22-0029) ULNRC-06780, Additional Supplement to License Amendment Request to Adopt TSTF-439 and TSTF-505, LDCN 20-0072022-11-30030 November 2022 Additional Supplement to License Amendment Request to Adopt TSTF-439 and TSTF-505, LDCN 20-007 ULNRC-06772, 10 CFR 50.59 and 10 CFR 72.48 Summary Report2022-11-23023 November 2022 10 CFR 50.59 and 10 CFR 72.48 Summary Report ULNRC-06777, Operating Quality Assurance Manual (Oqam) Revision 362022-11-16016 November 2022 Operating Quality Assurance Manual (Oqam) Revision 36 ULNRC-06779, ULNRC-06779: Contesting of Green NCV 05000483/2022010-03, Failure to Perform Required Inservice Testing of Residual Heat Removal Heat Exchanger Pneumatically (Air) Operated Outlet and Bypass Valves2022-11-14014 November 2022 ULNRC-06779: Contesting of Green NCV 05000483/2022010-03, Failure to Perform Required Inservice Testing of Residual Heat Removal Heat Exchanger Pneumatically (Air) Operated Outlet and Bypass Valves ULNRC-06765, License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate Testing Frequencies (LDCN 2020-0004)2022-11-0303 November 2022 License Amendment Request to Revise Technical Specification 5.5.16, Containment Leakage Rate Testing Program, for Permanent Extension of Type a and Type C Leak Rate Testing Frequencies (LDCN 2020-0004) ULNRC-06773, Results of Steam Generator Tube In-Service Inspection2022-11-0101 November 2022 Results of Steam Generator Tube In-Service Inspection ULNRC-06775, Submittal of Non-Functionality of Loose-Part Detection System Channel for Greater than 30 Days2022-10-27027 October 2022 Submittal of Non-Functionality of Loose-Part Detection System Channel for Greater than 30 Days ULNRC-06771, Correction to Application to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspections (LDCN 21-0013)2022-10-25025 October 2022 Correction to Application to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspections (LDCN 21-0013) ULNRC-06770, Cycle 25 Commitment Change Summary Report2022-10-19019 October 2022 Cycle 25 Commitment Change Summary Report ULNRC-06766, Correction of Text Contained in Enclosures Provided with Supplements to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)2022-09-0808 September 2022 Correction of Text Contained in Enclosures Provided with Supplements to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014) ULNRC-06767, Presentation Information for Pre-Application Meeting Regarding New License Amendment Request for Use of Framatome Fuel Assemblies2022-09-0606 September 2022 Presentation Information for Pre-Application Meeting Regarding New License Amendment Request for Use of Framatome Fuel Assemblies ULNRC-06764, Revised Response to Request for Additional Information Regarding License Amendment Request for Adoption Off Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015)2022-09-0101 September 2022 Revised Response to Request for Additional Information Regarding License Amendment Request for Adoption Off Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015) ULNRC-06763, Supplement to Application to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspection (LDCN 21-0013)2022-09-0101 September 2022 Supplement to Application to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspection (LDCN 21-0013) ULNRC-06762, Submittal of Owner'S Activity Reports (OAR-1 Forms) for Cycle/Refuel 252022-08-25025 August 2022 Submittal of Owner'S Activity Reports (OAR-1 Forms) for Cycle/Refuel 25 ULNRC-06758, Union Electric Co. - Renewed Facility Operating License NPF-30, Withdrawal of License Amendment Request and Exemption Request Regarding Transition to Framatome Fuel (LDCN 22-0002)2022-08-0404 August 2022 Union Electric Co. - Renewed Facility Operating License NPF-30, Withdrawal of License Amendment Request and Exemption Request Regarding Transition to Framatome Fuel (LDCN 22-0002) ULNRC-06755, Response to Requests for Additional Information for Proposed Revision to Radiological Emergency Response Plan Regarding Response and Notification Goals2022-07-13013 July 2022 Response to Requests for Additional Information for Proposed Revision to Radiological Emergency Response Plan Regarding Response and Notification Goals ULNRC-06754, Response to Request for Additional Information Regarding Licensee Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications2022-07-0505 July 2022 Response to Request for Additional Information Regarding Licensee Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications ULNRC-06739, Post-Audit Supplement to License Amendment Request to Adopt TSTF-439 and TSTF-505 (LDCN 20-0007)2022-06-30030 June 2022 Post-Audit Supplement to License Amendment Request to Adopt TSTF-439 and TSTF-505 (LDCN 20-0007) ULNRC-06752, Evacuation Time Estimates Report2022-06-27027 June 2022 Evacuation Time Estimates Report ULNRC-06753, Presentation Information for Pre-Submittal Meeting Regarding Updated Spent Fuel Criticality Safety Analysis2022-06-23023 June 2022 Presentation Information for Pre-Submittal Meeting Regarding Updated Spent Fuel Criticality Safety Analysis ULNRC-06750, Submittal of Cycle 26 Core Operating Limits Report (COLR)2022-06-13013 June 2022 Submittal of Cycle 26 Core Operating Limits Report (COLR) ULNRC-06735, Response to Request for Additional Information Regarding Request for License Amendment and Regulatory Exemptions for Risk-Informed Approach to Address GSI-191 and Respond to Generic Letter 2004-02 (LDCN 19-0014).2022-05-27027 May 2022 Response to Request for Additional Information Regarding Request for License Amendment and Regulatory Exemptions for Risk-Informed Approach to Address GSI-191 and Respond to Generic Letter 2004-02 (LDCN 19-0014). 2024-01-29
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Text
AmerenUE PO Box 620 Callaway Plant Fulton, MO 65251 August 13, 2008 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop P1-137 Washington, DC 20555-0001 ULNRC-05534 Ladies and Gentlemen:
DOCKET NUMBER 50-483 CALLAWAY PLANT UNION ELECTRIC COMPANY ViAmeren ONE-TIME COMPLETION TIME EXTENSION FOR ESSENTIAL SERVICE WATER (ESW) SYSTEM (OL1282 - TAC NO. MD7252)
References:
- 1. ULNRC-05445 dated October 31, 2007
- 2. ULNRC-05476 dated February 21, 2008
- 3. ULNRC-05482 dated March 7, 2008
- 4. NRC Request for Additional Information dated March 31, 2008
- 5. ULNRC-05500 dated May 6, 2008
- 6. NRC Request for Additional Information (RAI)
Letter from Mohan C. Thadani to Charles D. Naslund dated June 10, 2008
- 7. ULNRC-05520 dated July 10, 2008 In Reference 1 above AmerenUE requested a license amendment that would revise Callaway Technical Specification (TS) 3.7.8, "Essential Service Water (ESW)
System," and TS 3.8.1, "AC Sources - Operating," to allow a one-time Completion Time extension from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 14 days per ESW train to be used prior to December 31, 2008, for replacing underground ESW piping.
From the NRC's ongoing review of the subject license amendment request (LAR), several requests for additional information (RAIs) have been transmitted to AmerenUE, to which AmerenUE has responded. The letters that transmitted NRC RAIs, as well as AmerenUE's responses to the NRC RAIs, are in the above list of references.
With regard to information provided via the letters of References 5 and 7, two additional, clarifying questions were identified by the NRC staff and then received via an electronic request on July 28, 2008. AmerenUE's responses to those questions are hereby provided 4i Attachment 1 to this letter. Within the attachment, each Ac061
,lIe a subsidiary of Ameren Corporation
ULNRC-05534 August 13, 2008 Page 2 question is presented and followed by AmerenUE's response. There are no new commitments associated with these responses.
If you have any questions on this letter or its enclosures, please contact Mr.
Scott Maglio at (573) 676-8719.
I declare under penalty of perjury that the foregoing is true and correct.
Very truly yours, Executed on: 8 -( ý -)-o o 2 Luke H. Graessle Manager - Regulatory Affairs GGY/nls Attachments: 1 - Response to Additional NRC Questions
ULNRC-05534 August 13, 2008 Page 3 cc:
U.S. Nuclear Regulatory Commission (Original and 1 copy)
Attn: Document Control Desk Mail Stop P1-137 Washington, DC 20555-0001 Mr. Elmo E. Collins, Jr.
Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. Mohan C. Thadani (2 copies)
Licensing Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O-8G14 Washington, DC 20555-2738
ULNRC-05534 August 13, 2008 Page 4 Index and send hardcopy to QA File A160.0761 Hardcopy:
Certrec Corporation 4200 South Hulen, Suite 630 Fort Worth, TX 76109 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
Electronic distribution for the following can be made via Tech Spec ULNRC Distribution:
A. C. Heflin F. M. Diya T. E. Herrmann L. H. Graessle S. A. Maglio S. L. Gallagher L. M. Belsky (NSRB)
T. B. Elwood D. E. Martin G. G. Yates Ms. Diane M. Hooper (WCNOC)
Mr. Dennis Buschbaum (TXU)
Mr. Scott Bauer (Palo Verde)
Mr. Stan Ketelsen (PG&E)
Mr. Scott Head (STP)
Mr. John O'Neill (Pillsbury, Winthrop, Shaw, Pittman LLP)
Missouri Public Service Commission Mr. Floyd Gilzow (DNR)
ATTACHMENT 1 RESPONSE TO ADDITIONAL NRC QUESTIONS to ULNRC-05534 Page 1 of 2 Question:
- 1. Does Callaway have procedures and operator training in place to permit local/manual operation of the turbine driven AFW pump during long term station blackout conditions or post-fire conditions?
Response
Emergency Operating Procedure (EOP) ECA-0.0, "Loss of All AC Power," steps 4.a and 4.b provide guidance for restoring the turbine-driven auxiliary feedwater pump (TDAFP).
EOP Addendum 18 is used to assure proper AFW valve emergency alignment, including the steam and water supply valves to the TDAFP turbine, flow control discharge valves to the steam generators, turbine mechanical trip and throttle valve, and turbine speed governor control valve. All of these valves can be operated from the auxiliary shutdown panels if the main control room is inaccessible as discussed in off-normal procedure OTO-ZZ-00001, "Control Room Inaccessibility," which would be used for a control room fire.
Lastly, Attachments R and W of Callaway's Emergency Coordinator Supplemental Guideline provide directions to be used, as directed by the Emergency Coordinator, to start the TDAFP after a loss of AC and DC power and to align firewater (from pumper truck(s) if necessary) to the TDAFP.
Training is conducted on the use of the above procedures.
Question:
- 2. Callaway states the temporary diesels are located in the switchyard. What consideration was given to assuring the presence of diesel fuel oil in the switchyard is adequate from a fire protection point of view? Are the temporary diesels adequately separated from equipment needed for offsite power to the station in the event of a diesel fire? Will the diesels be operated in the switchyard during the extended CT for testing purposes?
Response
The temporary modification for the alternate AC power supply commitment (four supplemental diesel generators (DGs) located in the switchyard) is still being designed, and fire protection provisions are still under evaluation. However, the design and implementation of this temporary modification will meet the requirements of FSAR Site Addendum Section 9.5.1, "Fire Protection System," including Section 9.5.1.12, with respect to administrative controls governing the control of flammable liquids. A combination of fire protection features - control of combustibles (a preliminary review to ULNRC-05534 Page 2 of 2 has concluded that no fuel oil containment dike or berm is needed), physical separation, manual suppression equipment, and fire barriers (if required) - will assure that a fire in the switchyard will not prevent a safe shutdown of the plant.
Storage of flammable liquids will comply with the requirements of NFPA 30-1973, "Flammable and Combustible Liquids Code." Physical separation from the safeguard transformer ring bus (as shown on FSAR Site Addendum Figure 8.2-5 and as discussed in response to RAI 2.b in ULNRC-05482 dated March 7, 2008) will be maintained to the extent allowed by the switchyard configuration. An underground yard main provides fire fighting water to the switchyard. Fire hydrants are located at approximately 250-foot intervals along the yard main with manual fire fighting equipment supplied by two mobile units.
Each temporary DG will be filled with approximately 1,000 gallons of diesel fuel. There will also be two oil-filled transformers to step the voltage up to the required level. These combustible loads have preliminarily been evaluated by the design engineer and found to not require berms. The nearest permanently-installed plant structure, system, or component (SSC) in the switchyard will be the 'B' safeguards transformer V24 (its complete equipment tag number is XMDV24) which is one of the two preferred sources of offsite power to the Class lE AC power system. The redundant 'A' safeguards transformer V22 (its complete equipment tag number is XMDV22, and is also a permanently-installed SSC in the switchyard) is located approximately 188 feet plant north of V24 and therefore is outside the vicinity of the temporary installation and will be available regardless of any potential damage. (FSAR Site Addendum Figure 8.2-7 shows the equipment arrangement for these permanent plant SSCs.) Furthermore, the temporary DGs will be situated at the maximum available distance from transformer V24. This distance (which is not yet firmly established) will be evaluated for its potential fire hazard as part of the temporary modification. If there is a potential risk associated with the proximity of the diesels to nearby plant SSCs, further steps will be taken to mitigate the fire hazards, such as installation of fire barriers or re-positioning of the diesels.
Each of the four supplemental DGs will be load tested to 1600 kW, prior to entering the one-time 14-day LCO outage on each train, in order to demonstrate that the supplemental DGs can together supply a load equal to the 6,201 kW continuous duty rating of one station emergency DG. During the LCO outage, inspections will be conducted once every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> to assure operational readiness. These commitments were made in response to RAI 2.b in ULNRC-05482. Upon successful completion of the pre-outage load test runs, the supplemental DGs will be maintained "ready to start" for the duration of the LCO outage with 24-hour support staff coverage. There will be no scheduled preventive maintenance testing, or test runs, during the LCO outage.