ML12340A406

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Technical Specifications & Technical Specification Bases Updates. Includes Tsb Loes (Revision 114) & Tsb 3.6.15 (Entire Section) Rev 125
ML12340A406
Person / Time
Site: Mcguire, McGuire  Duke Energy icon.png
Issue date: 11/27/2012
From: Beaver B
Duke Energy Carolinas
To:
Office of Nuclear Reactor Regulation
References
DUK123320011
Download: ML12340A406 (11)
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Text

DISPOSITION OF THE ORIGINAL DOCUMENT WILL BE TO PRIORITY Normal THE TRANSMITTAL SIGNATURE UNLESS RECIPIENT IS Date: 11/27/12 OTHERWISE IDENTIFIED BELOW Document Transmittal #: DUK123320011

1) 00003 NRI&IA MGR EC050
2) 00070 VICKIE BREWER - MG03OT Duke Energy QA CONDITION 0 Yes
  • No
3) 00200 M E CARROLL ECO8H
4) 00297V M MCCREE REG ATL, GA DOCUMENT TRANSMITTAL FORM OTHER ACKNOWLEDGEMENT REQUIRED N Yes IF QA OR OTHER ACKNOWLEDGEMENT REQUIRED, PLEASE
5) 00422 MCG BONNIE C BEAVER - MG01RC ACKNOWLEDGE RECEIPT BY RETURNING THIS FORM TO:

REFERENCE

6) 00485 OPS TEST GROUP - MG01OP
7) 00568 MCG RAD PROT MG01RP MCGUIRE NUCLEAR STATION Duke Energy
8) 00707 SERV BLDG FILE ROOM -MG01S1 McGuire
9) 00841 OPS HUMAN PERFORMANCE - MG01OP DCRM MGO2DM TECHNICAL SPECIFICATIONS
10) 01202 KL CRANE - MG01RC 13225 Hagers Ferry Road
11) 01492 BLUE DOT LIBRARY MG02MO (TS) Huntersville, N.C. 28078
12) 01503 VICKIE LMC GINNIS - MG030T TECHNICAL SPECIFICATIONS
13) 01545 TERESA B PUTNAM MG01OP (TSB)
14) 01623 0 LMONTGOMERY MG01WC
15) 01749 L C GIBBY - MG01VP Rec'd By Page 1 of 3 Date DOCUMENT NO CACOND REV4/DATE DISTR CODE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 TOTAL TS & TSB MEMORANDUM 1 PAGE NA --- 11/01/12 MADM-04B V1 V1 V1 V1 T1 V1 V1 V1 V1 V1 VI Vi V1 V1 V1 31 TSB LIST OF EFFECTIVE SECTIONS 3 PAGES NA 114 11/01/12 B 3.6.15 ENTIRE SECTION 4 PAGES NA 125 11/01/12 REMARKS: PLEASE UPDATE ACCORDINGLY S D CAPPS VICE PRESIDENT MCGUIRE NUCLEAR STATION BY:

B C BEAVER MG01RP BCBITLC bv I p

0 A-F,

DISPOSITION OF THE ORIGINAL DOCUMENT WILL BE TO PRIORITY Normal THE TRANSMITTAL SIGNATURE UNLESS RECIPIENT IS Date: 11/27/12 OTHERWISE IDENTIFIED BELOW Document Transmittal #: DUK123320011

1) 01820 J R ELKINS- EC08I
2) 02388 BOB SCHOMAKER LYNCHBG, VA Duke Energy QA CONDITION [: Yes
  • No
3) 02532 RESIDENT NRC INSPECT MG01NRC
4) 02546 WC LIBRARY - MG01WC DOCUMENT TRANSMITTAL FORM OTHER ACKNOWLEDGEMENT REQUIRED
  • Yes IF QA OR OTHER ACKNOWLEDGEMENT REQUIRED, PLEASE
5) 03044 MCG DOC CNTRL MISC MAN MG05DM ACKNOWLEDGE RECEIPT BY RETURNING THIS FORM TO:

REFERENCE

6) 03614 MCG OPS PROCEDURE GP MG01OP
7) 03743 MCG QATEC SUP MNT QC MG01MM MCGUIRE NUCLEAR STATION Duke Energy
8) 03744 OPS TRNG MGR. MG03OT McGuire
9) 03759 U S NUC REG WASHINGTON, DC DCRM MGO2DM TECHNICAL SPECIFICATIONS
10) 03796 SCIENTECH CLEARWTR, FL 13225 Hagers Ferry Road
11) 04698 D E BORTZ EC08G (TS) Huntersville, N.C. 28078
12) 04809 MCG PLANT ENG. LIBR. MG05SE TECHNICAL SPECIFICATIONS
13) 05262 J L FREEZE MG01IE (TSB)
14) 05606J C MORTON MG01EP
15) 08103 WESTINGHOUSE ELECTRIC CO LLC Rec'd By Page 2 of 3 Date DOCUMENT NO QACOND REV #/ DATE DISTR CODE 1 2 3 4 5 6 7 8 9 10 11 12 t 13 14 15 TOTAL TS & TSB MEMORANDUM 1 PAGE NA --- 11/01/12 MADM-04B V1 V1 V1 V1 x V1 V1 V3 V1 V1 V1 Vi1 V1 31 TSB LIST OF EFFECTIVE SECTIONS 3 PAGES NA 114 11/01/12 B 3.6.15 ENTIRE SECTION 4 PAGES NA 125 11/01/12 S D CAPPS REMARKS: PLEASE REMARKS: PLEASE UPDATE ACCORDINGLY UPDATE ACCORDINGLY S D CAPPS VICE PRESIDENT MCGUIRE NUCLEAR STATION BY:

BC BEAVER MG01RP BCB[TLC

DISPOSITION OF THE ORIGINAL DOCUMENT WILL BE TO PRIORITY Normal THE TRANSMITTAL SIGNATURE UNLESS RECIPIENT IS Date: 11/27/12 OTHERWISE IDENTIFIED BELOW Document Transmittal #: DUK123320011

1) 09665 JON H THOMPSON, USNRC Duke Energy QA CONDITION [: Yes
  • No DOCUMENT TRANSMITTAL FORM OTHER ACKNOWLEDGEMENT REQUIRED N Yes IF QA OR OTHER ACKNOWLEDGEMENT REQUIRED, PLEASE ACKNOWLEDGE RECEIPT BY RETURNING THIS FORM TO:

REFERENCE MCGUIRE NUCLEAR STATION Duke Energy McGuire TECHNICAL SPECIFICATIONS DCRM MGO2DM 13225 Hagers Ferry Road (TS) Huntersville, N.C. 28078 TECHNICAL SPECIFICATIONS (TSB) '

Rec'd By Page 3 of 3 Date DOCUMENT NO QA COND REV #/DATE DISTR CODE 1 2 3 4 15 6 7 8 9 110 11 12 13 14 15 TOTAL TS & TSB MEMORANDUM 1 PAGE NA --- 11/01/12 MADM-04B Vi 31 TSB LIST OF EFFECTIVE SECTIONS 3 PAGES NA 114 11/01/12 B 3.6.15 ENTIRE SECTION 4 PAGES NA 125 11/01/12 REMARKS: PLEASE UPDATE ACCORDINGLY S D CAPPS VICE PRESIDENT MCGUIRE NUCLEAR STATION BY:

B C BEAVER MGO1RP BCB/TLC

November 1, 2012 MEMORANDUM To: All McGuire Nuclear Station Technical Specification (TS) and Tech Spec Bases (TSB) Manual Holders

Subject:

McGuire TSB Updates REMOVE INSERT TS Bases Manual TSB LOES (Entire Section) TSB LOES (Revision 114)

TSB 3.6.15 (Entire Section) TSB 3.6.15 (Entire Section) Rev 125 Revision numbers may skip numbers due to Regulatory Compliance Filing System.

Please call me if you have questions.

Bonnie Beaver Regulatory Compliance 875-4180

McGuire Nuclear Station Technical Specification Bases LOES TS Bases are revised by section Page Number Revision Revision Date BASES (Revised per section) i Revision 87 8/15/07 ii Revision 87 8/15/07 iii Revision 87 8/15/07 B 2.1.1 Revision 51 01/14/04 B 2.1.2 Revision 109 9/20/10 B 3.0 Revision 81 3/29/07 B 3.1.1 Revision 115 3/29/11 B 3.1.2 Revision 115 3/29/11 B 3.1.3 Revision 10 9/22/00 B 3.1.4 Revision 115 3/29/11 B 3.1.5 Revision 115 3/29/11 B 3.1.6 Revision 115 3/29/11 B 3.1.7 Revision 58 06/23/04 B 3.1.8 Revision 115 3/29/11 B 3.2.1 Revision 115 3/29/11 B 3.2.2 Revision 115 3/29/11 B 3.2.3 Revision 115 3/29/11 B 3.2.4 Revision 115 3/29/11 B 3.3.1 Revision 124 10/1/12 B 3.3.2 Revision 122 10/25/12 B 3.3.3 Revision 122 10/25/12 B 3.3.4 Revision 115 3/29/11 B 3.3.5 Revision 115 3/29/11 B 3.3.6 Not Used - Revision 87 6/29/06 B 3.4.1 Revision 115 3/29/11 B 3.4.2 Revision 0 9/30/98 B 3.4.3 Revision 115 3/29/11 B 3.4.4 Revision 115 3/29/11 B 3.4.5 Revision 115 3/29/11 McGuire Units 1 and 2 Page I Revision 114

PageNumber Amendment Revision Date B 3.4.6 Revision 115 3/29/11 B 3.4.7 Revision 115 3/29/11 B 3.4.8 Revision 115 3/29/11 B 3.4.9 Revision 115 3/29/11 B 3.4.10 Revision 102 8/17/09 B 3.4.11 Revision 115 3/29/11 B 3.4.12 Revision 115 3/29/11 B 3.4.13 Revision 115 3/29/11 B 3.4.14 Revision 115 3/29/11 B 3.4.15 Revision 115 3/29/11 B 3.4.16 Revision 121 8/5/09 B 3.4.17 Revision 115 3/29/11 B 3.4.18 Revision 86 6/25/07 B 3.5.1 Revision 115 3/29/11 B 3.5.2 Revision 116 8/18/11 B 3.5.3 Revision 57 4/29/04 B 3.5.4 Revision 122 10/25/12 B 3.5.5 Revision 115 3/29/11 B 3.6.1 Revision 53 2/17/04 B 3.6.2 Revision 115 3/29/11 B 3.6.3 Revision 115 3/29/11 B 3.6.4 Revision 115 3/29/11 B 3.6.5 Revision 115 3/29/11 B 3.6.6 Revision 122 10/25/12 B 3.6.7 Not Used - Revision 63 4/4/05 B 3.6.8 Revision 115 3/29/11 B 3.6.9 Revision 115 3/29/11 B 3.6.10 Revision 120 4/26/12 B 3.6.11 Revision 122 10/25/12 B 3.6.12 Revision 115 3/29/11 B 3.6.13 Revision 115 3/29/11 B 3.6.14 Revision 115 3/29/11 B 3.6.15 Revision 125 10/19/12 B 3.6.16 Revision 115 3/29/11 McGuire Units 1 and 2 Page 2 Revision 114

Page Number Amendment Revision Date B 3.7.1 Revision 102 8/17/09 B 3.7.2 Revision 105 2/22/10 B 3.7.3 Revision 102 8/17/09 B 3.7.4 Revision 115 3/29/11 B 3.7.5 Revision 115 3/29/11 B 3.7.6 Revision 115 3/29/11 B 3.7.7 Revision 115 3/29/11 B 3.7.8 Revision 115 3/29/11 B 3.7.9 Revision 120 4/26/12 B 3.7.10 Revision 115 3/29/11 B 3.7.11 Revision 115 3/29/11 B 3.7.12 Revision 115 3/29/11 B 3.7.13 Revision 115 3/29/11 B 3.7.14 Revision 115 3/29/11 B 3.7.15 Revision 66 6/30/05 B 3.7.16 Revision 115 3/29/11 B 3.8.1 Revision 115 3/29/11 B 3.8.2 Revision 92 1/28/08 B 3.8.3 Revision 123 9/29/12 B 3.8.4 Revision 115 3/29/11 B 3:8.5 Revision 41 7/29/03 B 3.8.6 Revision 115 3/29/11 B 3.8.7 Revision 115 3/29/11 B 3.8.8 Revision 115 3/29/11 B3.8.9 Revision 115 3/29/11 B 3.8.10 Revision 115 3/29/11 B 3.9.1 Revision 115 3/29/11 B 3.9.2 Revision 115 3/29/11 B 3.9.3 Revision 115 3/29/11 B 3.9.4 Revision 115 3/29/11 B 3.9.5 Revision 115 3/29/11 B 3.9.6 Revision 115 3/29/11 B 3.9.7 Revision 115 3/29/11 McGuire Units 1 and 2 Page 3 Revision 114

Containment Recirculation Drains B 3.6.15 B 3.6 CONTAINMENT SYSTEMS B 3.6.15 Containment Recirculation Drains BASES BACKGROUND The containment recirculation drains consist of the ice condenser drains and the refueling canal drains. The ice condenser is partitioned into 24 bays, each having a pair of inlet doors that open from the bottom plenum to allow the hot steam-air mixture from a Design Basis Accident (DBA) to enter the ice condenser. Twenty of the 24 bays have an ice condenser floor drain at the bottom to drain the melted ice into the lower compartment (in the 4 bays that do not have drains, the water drains through the floor drains in the adjacent bays). Each drain leads to a drain pipe that drops down several feet, then makes one or more 900 bends and exits into the lower compartment. A check (flapper) valve at the end of each pipe keeps warm air from entering during normal operation, but when the water exerts pressure, it opens to allow the water to spill into the lower compartment. This prevents water from backing up and interfering with the ice condenser inlet doors. The water delivered to the lower containment serves to cool the atmosphere as it falls through to the floor and provides a source of borated water at the containment sump for long term use by the Emergency Core Cooling System (ECCS) and the Containment Spray System during the recirculation mode of operation.

The six refueling canal drains are positioned in the bottom and sides of the refueling canal. During a refueling, valves are closed in the drains and the canal is flooded to facilitate the refueling process. The water acts to shield and cool the spent fuel as it is transferred from the reactor vessel to storage. After refueling, the canal is drained and the valves are locked open. In the event of a DBA, the refueling canal drains are the main return path to the lower compartment for Containment Spray System water sprayed into the upper compartment.

The ice condenser drains and the refueling canal drains function with the ice bed, the Containment Spray System, and the ECCS to limit the pressure and temperature that could be expected following a DBA.

APPLICABLE The limiting DBAs considered relative to containment temperature and SAFETY ANALYSES pressure are the loss of coolant accident (LOCA) and the steam line break (SLB). The LOCA and SLB are analyzed using computer codes designed to predict the resultant containment pressure and temperature transients. DBAs are assumed not to occur simultaneously or consecutively. Although the ice condenser is a passive system that McGuire Units 1 and 2 B 3.6.15-1 Revision No. 125

Containment Recirculation Drains B 3.6.15 BASES APPLICABLE SAFETY ANALYSES (continued) requires no electrical power to perform its function, the Containment Spray System and the Air Return System (ARS) also function to assist the ice bed in limiting pressures and temperatures. Therefore, the analysis of the postulated DBAs, with respect to Engineered Safety Feature (ESF) systems, assumes the loss of one ESF bus, which is the worst case single active failure and results in one train of the Containment Spray System and one train of the ARS being rendered inoperable.

The limiting DBA analyses (Ref. 1) show that the maximum peak containment pressure results from the LOCA analysis and is calculated to be less than the containment design pressure. The maximum peak containment atmosphere temperature results from the SLB analysis and is discussed in the Bases for LCO 3.6.5, "Containment Air Temperature."

In addition to calculating the overall peak containment pressures, the DBA analyses include calculation of the transient differential pressures that occur across subcompartment walls during the initial blowdown phase of the accident transient. The internal containment walls and structures are designed to withstand these local transient pressure differentials for the limiting DBAs.

The containment recirculation drains satisfy Criterion 3 of 10 CFR 50.36 (Ref. 2).

LCO This LCO establishes the minimum requirements to ensure that the containment recirculation drains perform their safety functions. The ice condenser floor drain valve disks must be closed to minimize air leakage into and out of the ice condenser during normal operation and must open in the event of a DBA when water begins to drain out. The refueling canal drain valves must be locked open and remain clear to ensure the return of Containment Spray System water to the lower containment in the event of a DBA. The containment recirculation drains function with the ice condenser, ECCS, and Containment Spray System to limit the pressure and temperature that could be expected following a DBA.

APPLICABILITY In MODES 1, 2, 3, and 4, a DBA could cause an increase in containment pressure and temperature, which would require the operation of the containment recirculation drains. Therefore, the LCO is applicable in MODES 1, 2, 3, and 4.

The probability and consequences of these events in MODES 5 and 6 are low due to the pressure and temperature limitations of these MODES.

McGuire Units 1 and 2 B 3.6.15-2 Revision No. 125

Containment Recirculation Drains B 3.6.15 BASES APPLICABILITY (continued)

As such, the containment recirculation drains are not required to be OPERABLE in these MODES.

ACTIONS A.1 If one ice condenser floor drain is inoperable, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> is allowed to restore the drain to OPERABLE status. The Required Action is necessary to return operation to within the bounds of the containment analysis. The 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> Completion Time is consistent with the ACTIONS of LCO 3.6.1, "Containment," which requires that containment be restored to OPERABLE status within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

B. 1 If one refueling canal drain is inoperable, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> is allowed to restore the drain to OPERABLE status. The Required Action is necessary to return operation to within the bounds of the containment analysis. The 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> Completion Time is consistent with the ACTIONS of LCO 3.6.1, which requires that containment be restored to OPERABLE status in 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

C.1 and C.2 If the affected drain(s) cannot be restored to OPERABLE status within the required Completion Time, the plant must be brought to a MODE in which the LCO does not apply. To achieve this status, the plant must be brought to at least MODE 3 within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and to MODE 5 within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. The allowed Completion Times are reasonable, based on operating experience, to reach the required plant conditions from full power conditions in an orderly manner and without challenging plant systems.

SURVEILLANCE SR 3.6.15.1 and SR 3.6.15.2 REQUIREMENTS Verifying the OPERABILITY of the refueling canal drains ensures that they will be able to perform their functions in the event of a DBA. SR 3.6.15.1 confirms that the refueling canal drain valves have been locked open and that the drains are clear of any obstructions that could impair their functioning. In addition to debris near the drains, SR 3.6.15.2 requires attention be given to any debris that is located where it could be McGuire Units 1 and 2 B 3.6.15-3 Revision No. 125

Containment Recirculation Drains B 3.6.15 BASES SURVEILLANCE REQUIREMENTS (continued) moved to the drains in the event that the Containment Spray System is in operation and water is flowing to the drains. SR 3.6.15.1 must be performed before entering MODE 4 from MODE 5 after every filling of the canal to ensure that the valves have been locked open and that no debris that could impair the drains was deposited during the time the canal was filled. The Surveillance Frequency is based on operating experience, equipment reliability, and plant risk and is controlled under the Surveillance Frequency Control Program.

SR 3.6.15.3 Verifying the OPERABILITY of the ice condenser floor drains ensures that they will be able to perform their functions in the event of a DBA.

Inspecting the drain valve disk ensures that the valve is performing its function of sealing the drain line from warm air leakage into the ice condenser during normal operation, yet will open if melted ice fills the line following a DBA. Verifying that the drain lines are not obstructed ensures their readiness to drain water from the ice condenser. The Surveillance Frequency is based on operating experience, equipment reliability, and plant risk and is controlled under the Surveillance Frequency Control Program.

REFERENCES 1. UFSAR, Section 6.2.

2. 10 CFR 50.36, Technical Specifications, (c)(2)(ii).

McGuire Units 1 and 2 B 3.6.15-4 Revision No. 125

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