Letter Sequence Request |
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TAC:MF2513, Control Room Habitability (Approved, Closed) |
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Category:Letter type:NL
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Charles A. Pierce Southern Nuclear Regulatory Affairs Director Operating Company, Inc.
40 Inverness Center Parkway Post Office Box 1295 Birmingham, AL 35242 Tel 205.992.7872 Fax 205.992.7601 sou August 5, 2014 Docket Nos.: 50-321 NL-14-1206 50-366 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington , D. C. 20555-0001 Edwin I. Hatch Nuclear Plant Operating License Revision Associated with License Amendment Request to Revise Technical Specifications Regarding Control Room Envelope Habitability in Accordance with TSTF-448, Revision 3 Ladies and Gentlemen:
By letter dated July 23 , 2013 , Southern Nuclear Operating Company (SNC) submitted a request for an amendment to the technical specifications (TS) for Edwin I. Hatch Nuclear Plant (HNP), Units 1 and 2. This request proposed an operating license (OL) condition to support implementation of the proposed TS change. The Enclosure contains the "clean typed" OL pages with the condition incorporated. Please note that OL condition proposed in the July 23, 2013 SNC letter has been modified in the Enclosure to remove outdated information .
Please note, regarding Part c. of the new Unit 1 and Unit 2 OL condition , SNC considers the date of the last successful performance of current SR 3.7.4.4 to be the date of the most recent successful pressure measurement test. Current SR 3.7.4.4 states:
Verify each MCREC subsystem can maintain a positive pressure of::::: 0.1 inches water gauge relative to the turbine building during the pressurization mode of operation at a subsystem flow rate of::; 2750 cfm and an outside air flow rate ::; 400 cfm .
The current Unit 1 and Unit 2 SR 3.7.4.4 does not meet all the requirements of (proposed) Specification 5.5.14.d , which is referenced in Part c. However, based on SNC's interpretation , the last successful positive pressure test meets the intent of this requirement.
This letter contains no NRC commitments. If you have any questions, please contact Ken McElroy at (205) 992-7369 .
U. S. Nuclear Regulatory Commission NL-14-1206 Page2 Mr. C. R. Pierce states he is Regulatory Affairs Director of Southern Nuclear Operating Company, is authorized to execute this oath on behalf of Southern Nuclear Operating Company and, to the best of his knowledge and belief, the facts set forth in this letter are trlJe.
Respectfully submitted, c.rt.~ .:.-..... "~- ~
C. R. Pierce :.: ~*-
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Regulatory Affairs Director =.::: : . . . : ./.:: :~~
CRP/RMJ/Iac Sworn to and subscribed before me this ~day of Aujtt s"t 12014.
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Notary Public r My commission expires: 1- Z- 2...0 I~
Enclosure:
HNP Unit 1 and Unit 2 Clean Typed Operating License Change cc: Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President & CEO Mr. D. G. Bost, Executive Vice President & Chief Nuclear Officer Mr. D. R. Vineyard, Vice President- Hatch Mr. B. L. lvey, Vice President- Regulatory Affairs Mr. D. R. Madison, Vice President- Fleet Operations Mr. B. J. Adams, Vice President- Engineering Mr. G. L. Johnson, Regulatory Affairs Manager- Hatch RType: CHA02.004 U.S. Nuclear Regulatorv Commission Mr. V. M. McCree, Regional Administrator Mr. R. E. Martin, NRR Senior Project Manager- Hatch Mr. D. H. Hardage, Senior Resident Inspector- Hatch State of Georaia Mr. J. H. Turner, Environmental Director Protection Division
Edwin I. Hatch Nuclear Plant Operating License Revision Associated with License Amendment Request to Revise Technical Specifications Regarding Control Room Envelope Habitability in Accordance with TSTF-448, Revision 3 Enclosure HNP Unit 1 and Unit 2 Clean Typed Operating License Change
that will be located in a seismically qualified manual transfer switch housing. The aforementioned circuit breaker and fuses shall be adequately coordinated with the upstream load center breaker over the entire range. These devices shall be adequately rated to prevent adverse effects of a fault to the rest of the distribution system.
- 2) SNC shall implement modifications by May 31, 2010, as described in Enclosure 1, section 2. 7 .3.2, of the LAR and section 5. 7 of SNC's letter dated February 25, 2008 (NL 08-0175) to modify the design for the air supply to the turbine building exhaust ventilation dampers, such that operating air to the dampers will be supplied from a non-interruptible instrument air source to eliminate single failure point vulnerability to loss of system/instrument air.
- 3) SNC shall complete actions by May 31, 2010, as described in SNC's letter dated February 25, 2008 (NL-08-0175) to install and implement the capability for Standby Liquid Control System hand switch jumpers for HNP Units 1 and 2.
- 4) SNC shall complete actions by May 31, 2012 for HNP Unit 1, as described in SNC's letters dated February 25, 2008 (NL-08-0175) and July 2, 2008 (NL-08-1 022), to modify the following Main Steam Isolation Valve alternate leakage treatment boundary valves, such that they can be closed in the event of a loss of offsite power without requiring local operation:
1N38-F1 01 A, 1N38-F1 01 B, 1N33-F012, 1N33-F013
- 5) SNC shall implement actions by May 31, 2010, as described in SNC's letter dated February 27, 2008, to assure that temperature switches which monitor charcoal bed temperature meet the environmental qualification requirements of 10 CFR 50.49.
(1 0) TSTF-448. Control Room Habitabilitv Upon implementation of the Amendments adopting TSTF-448, Revision 3, the determination of control room envelope (CAE) unfiltered air inleakage as required by SA 3.7.4.4, in accordance with TS 5.5.14.c.(i), the assessment of CAE habitability as required by Specification 5.5.14.c.(ii), and the measurement of CAE pressure as required by Specification 5.5.14.d, shall be considered met. Following implementation:
- a. The first performance of SA 3.7.4.4, in accordance with Specification 5.5.14.c.(i), shall be within the next 18 months.
- b. The first performance of the periodic assessment of CAE habitability, Specification 5.5.14.c.(ii), shall be within 3 years, plus the 9-month allowance of SA 3.0.2, of the next successful tracer gas test.
Renewed License No. DPR-57 Amendment No.
- c. The first performance of the periodic measurement of CRE pressure, Specification 5.5.14.d, shall be within 24 months, plus the 6 months allowed by SR 3.0.2, from the date of the most recent successful pressure measurement test.
D. Southern Nuclear shall not market or broker power or energy from Edwin I. Hatch Nuclear Plant, Unit 1.
- 3. This renewed license is effective as of the date of issuance and shall expire at midnight, August 6, 2034.
FOR THE U.S. NUCLEAR REGULATORY COMMISSION Samuel J. Collins, Director Office of Nuclear Reactor Regulation Attachments:
Appendix A- Technical Specifications Appendix B - Environmental Protection Plan Date of Issuance: January 15, 2002 Renewed License No. DPR-57 Amendment No.
- 6a-manually switched over from normally operating power supplies, to a Class -
1E circuit that will be isolated by an appropriately rated safety related, environmentally and seismically qualified circuit breaker. For further protection and isolation, the licensee shall also use fuses that will be located in a seismically qualified manual transfer switch housing. The aforementioned circuit breaker and fuses shall be adequately coordinated with the upstream load center breaker over the entire range. These devices shall be adequately rated to prevent adverse effects of a fault to the rest of the .distribution system.
ii} SNC shall implement modifications by May 31, 2010, as described in Enclosure 1, section 2.7.3.2, of the LAR and section 5.7 of SNC's letter dated February 25, 2008, (NL 08-0175} to modify the design for the air supply to the turbine building exhaust ventilation dampers, such that operating air to the dampers will be supplied from a non-interruptible instrument air source to eliminate single failure point vulnerability to loss of system/instrument air.
iii} SNC shall complete actions by May 31, 2010, as described in SNC's letter dated February 25, 2008 (NL-08-0175} to install and implement the capability for Standby Liquid Control System hand switch jumpers for HNP Units 1 and 2.
iv} SNC shall complete actions by May 31, 2011, for HNP Unit 2, as described in SNC's letters dated February 25, 2008 (NL-08-0175} and July 2, 2008 (NL-08-1022}, to modify the following Main Steam Isolation Valve alternate leakage treatment boundary valves, such that they can be closed in the event of a loss of offsite power without requiring local operation:
2N11-F004A, 2N11-F004B, 2N33-F003, 2N33-F004 v} SNC shall implement actions by May 31, 2010, as described in SNC's letter dated February 27, 2008, to assure that temperature switches which monitor charcoal bed temperature meet the environmental qualification requirements of 10 CFR 50.49.
Renewed License No. NPF-5 Amendment No.
- 6b-(h) TSTF-448. Control Room Habitability Upon implementation of the Amendments adopting TSTF-448, Revision 3, the determination of control room envelope (CRE) unfiltered air inleakage as required by SR 3. 7.4.4, in accordance with TS 5.5.14.c.(i), the assessment of CRE habitability as required by Specification 5.5.14.c.(ii), and the measurement of CRE pressure as required by Specification 5.5.14.d, shall be considered met. Following implementation:
i) The first performance of SR 3.7.4.4, in accordance with Specification 5.5.14.c.(i), shall be within the next 18 months.
ii) The first performance of the periodic assessment of CRE habitability, Specification 5.5.14.c.(ii), shall be within 3 years, plus the 9-month allowance of SR 3.0.2, of the next successful tracer gas test.
iii) The first performance of the periodic measurement of CRE pressure, Specification 5.5.14.d, shall be within 24 months, plus the 6 months allowed by SR 3.0.2, from the date of the most recent successful pressure measurement test.
D. This renewed license is subject to the following antitrust conditions:
(1) As used herein:
(a) "Entity means any financially responsible person, private or public corporation, municipality, county, cooperative, association, joint stock association or business trust, owning, operating or proposing to own or operate equipment or facilities within the state of Georgia (other than Chatham, Effingham, Fannin, Towns and Union Counties) for Renewed License No. NPF-5 Amendment No.