ML12283A344

Technical Update Instructions Specifications

ML12283A344
Person / Time
Site:	Duane Arnold
Issue date:	10/02/2012
From:	Byrne T Florida Power & Light Co
To:	Office of Nuclear Reactor Regulation
References
Download: ML12283A344 (15)

Text

October 2, 2012 TO: TECHNICAL SPECIFICATION DISTRIBUTION Attached is Amendment No. 283 to the Duane Arnold Energy Center Technical Specifications.

Amendment No. 283 {TSCR No. 135} is a "one time only" change to the Operability requirements for Core Spray in MODES 4 & 5 to support the upcoming Torus Recoat Project during RF023.

Please update your copy of the Technical Specifications as indicated in the attached Update Instructions.

THIS AMENDMENT BECOMEs EFFECTIVE 101512012.

IMPORTANT: Holders of Technical Specification Copies are required to sign and date the Notice of Receipt Form below, detach it at the dotted line and:

RETURN IT TO THE ADDRESSEE ALONG WITH THE SHEETS REMOVED FROM THE TECHNICAL SPECIFICATIONS.

Tom Byrne Regulatory Affairs Manager (Acting)

Copy No: 14 NRC REGION III Issued To: REGIONAL LIBRARY NOTICE OF RECEIPT OF TECHNICAL SPECIFICATION REVISION To: Pat Vandersee, Licensing Department Duane Arnold Energy Center, 3277 DAEC Road, Palo, IA 52324 This acknowledges receipt of Amendment #283to the Duane Arnold Energy Center Technical Specifications.

Signature: DATE DATE Signature:

Dot t1i aI-L-

October 2, 2012 Page 1 of 1 DUANE ARNOLD ENERGY CENTER TECHNICAL SPECIFICATIONS UPDATE INSTRUCTIONS REMOVE INSERT Technical Specifications: Technical Specifications:

Op. License Page No. 3 Op. License Page No. 3 List of Effective Pages 1-3 List of Effective Pages 1-3 Pg 3.3-41 Pg 3.3-41 TS BASES VOL 1: TS BASES VOL 1:

List of Effective Pages 1-5 List of Effective Pages 1-5 Pg B 3.3-110 Pg B 3.3-110 TS BASES VOL 2: TS BASES VOL 2:

Pg B 3.5-22 Pg B 3.5-22 Pg B 3.5-25 Pg B 3.5-25

C. This renewed operating license shall be deemed to contain and is subject to the conditions specified in the following Commission regulations in 10 CFR Chapter I; Part 20, Section 30.34 of Part 30, Section 40.41 of Part 40, Sections 50.54 and 50.59 of Part 50, and Section 70.32 of Part 70; is subject to all applicable provisions of the Act and to the rules, regulations, and orders of the Commission now or hereafter in effect; and is subject to the additional conditions specified or incorporated below:

(1) Maximum Power Level NextEra Energy Duane Arnold, LLC is authorized to operate the Duane Arnold Energy Center at steady state reactor core power levels not in excess of 1912 megawatts (thermal).

(2) Technical Specifications The Technical Specifications contained in Appendix A, as revised through Amendment No. 283, are hereby incorporated in the license. NextEra Energy Duane Arnold, LLC shall operate the facility in accordance with the Technical Specifications.

(a) For Surveillance Requirements (SRs) whose acceptance criteria are modified, either directly or indirectly, by the increase in authorized maximum power level in 2.C.(1) above, in accordance with Amendment No. 243 to Facility Operating License DPR-49, those SRs are not required to be performed until their next scheduled performance, which is due at the end of the first surveillance interval that begins on the date the Surveillance was last performed prior to implementation of Amendment No. 243.

(b) Deleted.

(3) Fire Protection NextEra Energy Duane Arnold, LLC shall implement and maintain in effect all provisions of the approved fire protection program as described in the Final Safety Analysis Report for the Duane Arnold Energy Center and as approved in the SER dated June 1, 1978, and Supplement dated February 10, 1981, subject to the following provision:

NextEra Energy Duane Arnold, LLC may make changes to the approved fire protection program without prior approval of the Commission only if those changes would not adversely affect the ability to achieve and maintain safe shutdown in the event of a fire.

(4) The licensee is authorized to operate the Duane Arnold Energy Center following installation of modified safe-ends on the eight primary recirculation system inlet lines which are described in the licensee letter dated July 31, 1978, and supplemented by letter dated December 8, 1978.

(5) Physical Protection NextEra Energy Duane Arnold, LLC shall fully implement and maintain in effect all provisions of the Commission-approved physical security, training and qualification, Renewed License No. DPR-49 Amendment 283

Page 1 of 3 LIST OF EFFECTIVE PAGES Appendix A to DPR-49 Technical Specifications Revision Date 10/0512 Pane Date Rev. Pane Date Rev. Pane Date Rev.

1.1-1 10/30/00 234 3.1-10 04/27/12 280 3.3-29 04/27/12 280 1.1-2 10/30/00 234 3.1-11 11/20/08 271 3.3-30 08/01/98 223 1.1-3 08/21/01 240 3.1-12 08/01/98 223 3.3-31 04/27/12 280 1.1-4 10/30/00 234 3.1-13 08/01/98 223 3.3-32 08/01/98 223 1.1-5 11/07/01. 243 3.1-14 11/20/08 271 3.3-33 08/01/98 223 1.1-6 04/27/12 280 3.1-15 08/01/98 223 3.3-34 08/01/98 223 1.1-7 08/01/98 223 3.1-16 08/01/98 223 3.3-35 08/01/98 223 1.1-8 08/01/98 223 3.1-17 04/27/12 280 3.3-36 08/01/98 223 1.2-1 08/01/98 223 3.1-18 08/01/98 223 3.3-37 09/30/09 243 1.2-2 08/01/98 223 3.1-19 04/27/12 280 3.3-38 08/01/98 223 1.2-3 08/01/98 223 3.1-20 08/01/98 223 3.3-39 04/27/12 280 1.3-1 08/01/98 223 3.1-21 04/27/12 280 3.3-40 04/27/12 280 1.3-2 08/01/98 223 3.1-22 04/27/12 280 3.3-41 10/05/12 283 1.3-3 08/01/98 223 3.1-23 04/11/01 236 3.3-42 08/01/98 223 1.3-4 08/01/98 223 3.1-24 08/01/98 223 3.3-43 08/01/98 223 1.3-5 08/01/98 223 3.1-25 09/20/05 259 3.3-44 03/27/02 245 1.3-6 08/01/98 223 3.1-26 04/27/12 280 3.3-45 03/27/02 245 1.3-7 08/01/98 223 3.2-1 04/27/12 280 3.3-46 08/01/98 223 1.3-8 08/01/98 223 3.2-2 04/27/12 280 3.3-47 08/01/98 223 1.3-9 08/01/98 223 3.2-3 08/01/98 223 3.3-48 04/27/12 280 1.3-10 08/01/98 223 3.3-1 08/01/98 223 3.3-49 08/01/98 223 1.3-11 08/01/98 223 3.3-2 11/07/01 243 3.3-50 08/01/98 223 1.3-12 08/01/98 223 3.3-3 04/27/12 280 3.3-51 08/01/98 223 1.3-13 08/01/98 223 3.3-4 04/27/12 280 3.3-52 06/29/00 231 1.4-1 07/11/05 258 3.3-5 04/27/12 280 3.3-53 08/01/98 223 1.4-2 07/11/05 258 3.3-6 04/27/12 280 3.3-54 08/01/98 223 1.4-3 07/11/05 258 3.3-7 11/07/01 243 3.3-55 04/27/12 280 1.4-4 07/11/05 258 3.3-8 08/01/98 223 3.3-56 04/27/12 280 1.4-5 11/20/08 271 3.3-9 11/07/01 243 3.3-57 02/09/07 261 1.4-6 07/11/05 258 3.3-10 08/01/98 223 3.3-58 08/01/98 223 1.4-7 07/11/05 258 3.3-11 08/01/98 223 3.3-59 06/29/00 231 1.4-8 07/11/05 258 3.3-12 04/27/12 280 3.3-60 06/29/00 231 2.0-1 11/07/01 243 3.3-13 04/27/12 280 3.3-61 08/01/98 223 3.0-1 04/29/11 277 3.3-14 08/01/98 223 3.3-62 08/01/98 223 3.0-2 04/18/05 255 3.3-15 08/01/98 223 3.3-63 08/01/98 223 3.0-3 04/29/11 277 3.3-16 08/01/98 223 3.3-64 04/27/12 280 3.0-3a 04/29/11 277 3.3-17 04/27/12 280 3.3-65 05/16/01 237 3.0-4 07/30/02 246 3.3-18 04/27/12 280 3.3-66 04/18/05 255 3.0-5 04/18/05 255 3.3-19 04/27/12 280 3.3-67 04/27/12 280 3.1-1 08/01/98 223 3.3-20 04/18/08 268 3.3-68 04/27/12 280 3.1-2 08/01/98 223 3.3-21 04/18/05 255 3.3-69 08/01/98 223 3.1-3 08/01/98 223 3.3-22 08/01/98 223 3.3-70 08/01/98 223 3.1-4 08/01/98 223 3.3-23 04/27/12 280 3.3-71 04/27/12 280 3.1-5 08/01/98 223 3.3-24 07/06/04 254 3.3-72 08/01/98 223 3.1-6 08/01/98 223 3.3-25 04/27/12 280 3.3-73 08/01/98 223 3.1-7 08/01/98 223 3.3-26 04/27/12 280 3.3-74 04/27/12 280 3.1-8 11/20/08 271 3.3-27 10/01/09 243 3.3-75 06/12/09 273 3.1-9 08/01/98 223 3.3-28 04/27/12 280 3.3-76 08/01/98 223

Page 2 of 3 LIST OF EFFECTIVE PAGES Appendix A to DPR-49 Technical Specifications Revision Date 10/0512 Page Date Rev_ Page Date Rev Page Date Pe.v Rev Pape Date 3.3-77 04/27/12 280 3.6-9 10/30/00 234 3.7-14 08/01/98 223 3.4-1 08/01/98 223 3.6-10 10/30/00 234 3.7-15 04/27/12 280 3.4-2 08/01/98 223 3.6-11 10/30/00 234 3.7-16 11/07/01 243 3.4-3 04/27/12 280 3.6-12 10/30/00 234 3.7-17 04/27/12 280

.3.7-18 3.4-4 08/01/98 223 3.6-13 04/27/12 280 04/27/12 280 3.4-5 04/27/12 280 3.6-14 04/27/12 280 3.7-19 07/02/99 227 3.4-6 08/01/98 223 3.6-1.5 4/16/10 276 3.7-20 04/27/12 280 3.4-7 09/26/12 282 3.6-16 04/27/12 280 3.8-1 04/18/05 255 3.4-8 08/01/98 223 3.6-17 08/01/98 223 3.8-2 08/01/98 223 3.4-9 04/27/12 280 3.6-18 09/26/12 282 3.8-3 09/26/08 270 3.4-10 04/18/05 255 3.6-19 08/01/98 223 3.8-4 09/26/08 270 3.4-11 04/18/05 255 3.6-20 04/27/12 280 3.8-5 04/27/12 280 3.4-12 04/27/12 280 3.6-21 04/27/12 280 3.8-6 04/27/12 280 3.4-13 04/16/10 255 3.6-22 08/01/98 223 3.8-7 04/27/12 280 3.4-14 04/27/12 280 3.6-23 04/27/12 280 3.8-8 04/27/12 280 3.4-15 04/18/05 255 3.6-24 08/01/98 223 3.8-9 04/27/12 280 3.4-16 08/01/98 223 3.6-25 08/01/98 223 3.8-10 04/27/12 280 3.4-17 04/27/12 280 3.6-26 04/27/12 280 3.8-11 08/01/98 223 3.4-18 10/30/00 234 3.6-27 04/27/12 280 3.8-12 08/01/98 223 3.4-19 04/27/12 280 3.6-28 08/01/98 223 3.8-13 10/30/00 234 3.4-20 08/01/98 223 3.6-29 04/27/12 280 3.8-14 08/01/98 223 3.4-21 04/27/12 280 3.6-30 08/01/98 223 3.8-15 08/01/98 223 3.4-22 08/01/98 223 3.6-31 04/27/12 280 3.8-16 04/27/12 280 3.4-23 04/27/12 280 3.6-32 07/27/07 265 3.8-17 11/22/02 247 3.4-24 08/31/03 253 3.6-33 07/27/07 265 3.8-18 04/27/12 280 3.4-25 04/27/12 280 3.6-34 04/27/12 280 3.8-19 04/27/12 280 3.5-1 04/18/05 255 3.6-35 05/16/01 237 3.8-20 04/27/12 280 3.5-2 08/01/98 223 3.6-36 04/27/12 280 3.8-21 08/01/98 223 3.5-3 08/01/98 223 3.6-37 05/16/01 237 3.8-22 08/01/98 223 3.5-4 04/27/12 280 3.6-38 10/30/00 234 3.8-23 10/30/00 234 3.5-5 04/27/12 280 3.6-39 05/16/01 237 3.8-24 10/30/00 234 3.5-6 04/27/12 280 3.6-40 04/27/12 280 3.8-25 04/27/12 280 3.5-7 09/26/12 282 3.6-41 05/16/01 237 3.8-26 08/01/98 223 3.5-8 08/01/98 223 3.6-42 05/16/01 237 3.8-27 08/01/98 223 3.5-9 04/27/12 280 3.6-43 04/27/12 280 3.8-28 08/01/98 223 3.5-10 04/27/12 280 3.7-1 04/18/05 255 3.8-29 04/27/12 280 3.5-11 04/27/12 280 3.7-2 04/27/12 280 3.8-30 08/01/98 223, 3.5-12 04/18/05 255 3.7-3 08/01/98 223 3.8-31 04/27/12 280 3.5-13 04/27/12 280 3.7-4 04/27/12 280 3.9-1 08/01/98 223 3.5-14 04/27/12 280 3.7-5 08/01/98 223 3.9-2 04/27/12 280 3.6-1 08/01/98 223 3.7-6 04/27/12 280 3.9-3 04/27/12 280 3.6-2 04/27/12 280 3.7-7 12/18/08 269 3.9-4 04/27/12 280 3.6-3 08/01/98 223 3.7-8 12/18/08 269 3.9-5 04/27/12 280 3.6-4 08/01/98 223 3.7-9 04/27/12 280 3.9-6 08/01/98 223 3.6-5 08/01/98 223 3.7-10 04/27/12 280 3.9-7 08/01/98 223 3.6-6 08/01/98 223 3.7-11 01/18/08 267 3.9-8 04/27/12 280 3.6-7 04/27/12 280 3.7-12 01/18/08 267 3.9-9 04/27/12 280 3.6-8 08/01/98 223 3.7-13 04/27/12 280 3.9-10 10/30/00 234

Page 3 of 3 LIST OF EFFECTIVE PAGES Appendix A to DPR-49 Technical Specifications Revision Date 10/0512 Page Date Rev. Page Date Rev. Page Date Rev.

3.9-11 08/01/98 223 5.0-18 4/16/10 276 3.9-12 04/27/12 280 5.0-18a 04/27/12 280 3.9-13 10/30/00 234 5.0-18b 04/27/12 280 3.9-14 08/01/98 223 5.0-19 03/11/05 256 3.9-15 04/27/12 280 5.0-20 03/11/05 256 3.10-1 07/27/07 264 5.0-21 08/01/98 223 3.10-2 08/01/98 223 5.0-22 11/22/02 248 3.10-3 08/01/98 223 5.0-23 11/22/02 248 3.10-4 08/01/98 223 5.0-24 11/22/02 248 3.10-5 04/27/12 280 5.0-25 11/22/02 248 3.10-6 08/01/98 223 3.10-7 08/01/98 223 3.10-8 04/27/12 280 3.10-9 08/01/98 223 3.10-10 08/01/98 223 3.10-11 04/27/12 280 3.10-12 04/27/12 280 3.10-13 08/01/98 223 3.10-14 04/27/12 280 3.10-15 04/27/12 280 3.10-16 08/01/98 223 3.10-17 04/27/12 280 3.10-18 08/01/98 223 3.10-19 08/01/98 223 3.10-20 08/01/98 223 3.10-21 08/01/98 223 3.10-22 04/27/12 280 3.10-23 04/27/12 280 4.0-1 08/01/98 223 4.0-2 07/16/99 226 4.0-3 08/01/98 223 5.0-1 08/01/98 223 5.0-2 08/01/98 223 5.0-3 10/01/09 274 5.0-4 11/22/02 248 5.0-5 08/01/98 223 5.0-6 08/01/98 223 5.0-7 10/30/00 234 5.0-8 07/11/05 258 5.0-9 08/01/98 223 5.0-10 11/22/02 248 5.0-11 10/30/00 234 5.0-12 08/01/98 223 5.0-13 01/26/01 235 5.0-14 08/01/98 223 5.0-15 10/30/00 234 5.0-16 10/12/01 241 5.0-17 4/16/10 276

ECCS Instrumentation 3.3.5.1 Table 3.3.5.1-1 (page 1 of 5)

Emergency Core Cooling System Instrumentation APPLICABLE CONDITIONS MODES REQUIRED REFERENCED OR OTHER CHANNELS FROM SPECIFIED PER REQUIRED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS FUNCTION ACTION A.1 REQUIREMENTS VALUE

1. Core Spray System

a. Reactor Vessel Water 1,2,3, 4(b) B SR 3.3.5.1.1 > 38.3 inches Level - Low Low Low (a) (a) SR 3.3.5.1.3 4 5 SR 3.3.5.1.8 SR 3.3.5.1.9

b. Drywell Pressure - 1,2,3 4(b) B SR 3.3.5.1.3 < 2.19 psig High SR 3.3.5.1.8 SR 3.3.5.1.9

c. Reactor Steam Dome 1,2,3 4 C SR 3.3.5.1.3 > 363.3 psig Pressure - Low SR 3.3.5.1.8 and < 485.1 psig (Injection Permissive) SR 3.3.5.1.9 4 (a) 5 (a) 4 B SR 3.3.5.1.3 > 363.3 psig SR 3.3.5.1.8 SR 3.3.5.1.9 and < 485.1 psig

d. Core Spray Pump 1,2,3, 1 per E SR 3.3.5.1.3 >256.6 gpm Discharge Flow - Low (a) (a) (e) SR 3.3.5.1.8 and (Bypass) 4 5 pump SR 3.3.5.1.9 _<2382.1 gpm

e. Core Spray Pump Start 1,2,3, 1 per C SR 3.3.5.1.8 > 2.6 seconds Time Delay Relay 4 (a) 5 (a) pump SR 3.3.5.1.9 and < 6.8 seconds

f. 4.16 kV Emergency Bus 1,2,3, 1 per F SR 3.3.5.1.5 < 3500 V Sequential Loading 4 (a) 5 (a) pump SR 3.3.5.1.6 Relay SR 3.3.5,1.9

2. Low Pressure Coolant Injection (LPCI) System

a. Reactor Vessel Water 1,2,3, 4 B SR 3.3.5.1.1 > 38.3 inches Level- Low Low Low (a) (a) SR 3.3.5.1.3 411 51 SR 3.3.5.1.8 SR 3.3.5.1.9

b. Drywell Pressure - 1,2,3 4 B SR 3.3.5.1.3 < 2.19 psig High SR 3.3.5.1.8 SR 3.3.5.1.9 (continued)

(a) When associated ECCS subsystem(s) are required to be OPERABLE per LCO 3.5.2, ECCS-Shutdown.

(b) Al;o required to initiate the associated Diesel Generator (DG).

(e) During Refuel Outage (RFO) 23, the MODE 4 and 5 requirement for Function 1.d is revised to be zero (0) required channels per pump.

DAEC 3.3-41 Amendment 283

Page 1 of 5 LIST OF EFFECTIVE PAGES Appendix A to DPR-49 Technical Specifications Bases Revision Date 09/26/12 Page Date Rev. Page Date Rev. Page Date Rev.

B 2.0-1 08/01/98 223 B 3.1-18 08/01/98 223 B 3.3-7 11/07/01 044 B 2.0-2 08/01/98 223 B 3.1-19 08/01/98 223 B 3.3-8 11/07/01 044 B 2.0-3 11/07/01 044 B 3.1-20 04/27/12 120 B 3.3-9 08/01/98 223 B 2.0-4 08/01/98 223 B 3.1-21 04/27/12 120 B 3.3-10 05/31/02 057 B 2.0-5 04/09/04 044A B 3.1-22 11/20/08 098 B 3.3-11 08/01/98 223 B 2.0-6 04/09/04 044A B 3.1-23 08/01/98 223 B 3.3-12 08/01/98 223 B 2.0-7 08/01/98 223 B 3.1-24 08/01/98 223 B 3.3-13 02/23/09 102 B 2.0-8 04/09/04 044A B 3.1-25 11/20/08 098 B 3.3-14 04/18/08 100 B 2.0-9 04/09/04 044A B 3.1-26 08/01/98 223 B 3.3-15 08/01/98 223 B 3.0-I 04/29/11 122 B 3.1-27 04/09/04 044A. B 3.3-16 08/01/98 223 B 3.0-2 10/30/00 026A B 3.1-28 08/01/98 223 B 3.3-17 08/01/98 223 B 3.0-3 08/01/98 223 B 3.1-29 08/01/98 223 B 3.3-18 08/25/10 123 B 3.0-4 08/01/98 223 B 3.1-30 08/01/98 223 B 3.3-19 11/07/01 044 B 3.0-5 04/18/05 064 B 3.1-31 08/01/98 223 B 3.3-20 08/25/10 123 B 3.0-6 04/18/05 064 B 3.1-32 04/27/12 120 B 3.3-21 08/01/98 223 B 3.0-7 04/18/05 064 B 3.1-33 04/09/04 044A B 3.3-22 08/01/98 223 B 3.0-8 04/18/05 064 B 3.1-34 08/01/98 223 B 3.3-23 08/01/98 223 B 3.0-9 04/18/05 064 B 3.1-35 04/18/08 093 B 3.3-24 08/01/98 223 B 3.0-10 04/18/05 064 B 3.1-36 03/25/05 070 B 3.3-25 08/01/98 223 B 3.0-11 04/18/05 064 B 3.1-37 03/25/05 070 B 3.3-26 04/27/12 120 B 3.0-12 04/18/05 029 B 3.1-38 04/27/12 120 B 3.3-27 04/27/12 120 B 3.0-13 06/12/07 079 B 3.1-39 04/11/01 236 B 3.3-28 04/27/12 120 B 3.0-13A 04/29/11 122 B 3.1-40 08/01/98 223 B 3.3-29 04/27/12 120 B 3.0-13B 04/29/11 122 B 3.1-41 08/01/98 223 B 3.3-30 04/27/12 120 B3.0-13C 04/29/11 122 B3.1-42 04/27/12 120 B3.3-31 04/12/12 120 B 3.0-13D 04/29/11 122 B 3.1-43 04/27/12 120 B 3.3-32 04/27/12 120 B 3.0-14 07/11/05 029 B 3.1-44 04/27/12 120 B 3.3-33 04/27/12 120 B 3.0-15 07/11/05 029 B 3.1-45 04/09/04 044A B 3.3-34 04/27/12 120 B 3.0-16 07/11/05 029 B 3.1-46 09/20/05 044A B 3.3-35 04/27/12 120 B 3.0-17 07/11/05 029 B 3.1-47 09/20/05 223 B 3.3-36 04/09/04 044A B 3.0-18 07/11/05 029 B 3.1-48 04/27/12 120 B 3.3-37 08/01/98 223 B 3.0-19 07/11/05 029 B 3.1-49 04/27/12 120 B 3.3-38 08/01/98 223 B 3.1-1 08/01/98 223 B 3.2-1 04/09/04 044A B 3.3-39 08/01/98 223 B 3.1-2 08/01/98 223 B 3.2-2 02/23/09 115 B 3.3-40 08/01/98 223 B 3.1-3 08/01/98 223 B 3.2-3 04/09/04 044A B 3.3-41 08/01/98 223 B 3.1-4 08/01/98 223 B 3.2-4 04/27/12 120 B 3.3-42 04/27/12 120 B 3.1-5 08/01/98 223 B 3.2-5 04/09/04 044A B 3.3-43 04/27/12 120 B 3.1-6 08/01/98 223 B 3.2-6 04/09/04 044A B 3.3-44 04/27/12 120 B 3.1-7 04/09/04 044A B 3.2-7 04/09/04 044A B 3.3-45 04/27/12 120 B 3.1-8 04/09/04 044A B 3.2-8 04/09/04 044A B 3.3-46 08/01/98 223 B 3.1-9 08/01/98 223 B 3.2-9 11/07/01 044 B 3.3-47 08/01/98 223 B 3.1-10 08/01/98 223 B 3.2-10 04/27/12 120 B 3.3-48 08/01/98 223 B 3.1-11 08/01/98 223 B 3.2-11 04/09/04 044A B 3.3-49 04/18/08 093 B 3.1-12 08/01/98 223 B 3.3-1 08/01/98 223 B 3.3-50 03/25/05 070 B 3.1-13 04/09/04 044A B 3.3-2 08/01/98 223 B 3.3-51 03/25/05 070 B 3.1-14 08/01/98 223 B 3.3-3 04/09/04 044A B 3.3-52 03/25/05 070 B 3.1-15 08/01/98 223 B 3.3-4 08/01/98 223 B 3.3-53 03/25/05 070 B 3.1-16 08/01/98 223 B 3.3-5 08/01/98 223 B 3.3-54 04/27/12 120 B 3.1-17 11/20/08 098 B 3.3-6 08/01/98 223 B 3.3-55 04/27/12 120

Page 2 of 5 LIST OF EFFECTIVE PAGES Appendix A to DPR-49 Technical Specifications Bases Revision Date 09/26/12 PaCe Date Rev Pa0e Date Rev PaneP f DaT)Re R e-v B 3.3-56 04/27/12 120 B 3.3-104 08/01/98 223 B 3.3-153 08/01/98 223 B 3.3-57 04/27/12 120 B 3.3-105 08/01/98 223 B 3.3-154 08/01/98 223 B 3.3-57A 04/18/08 093 B 3.3-106 04/09/04 044A B 3.3-155 08/01/98 223 B 3.3-58 07/06/04 067A B 3.3-107 04/09/04 044A B 3.3-156 08/01/98 223 B 3.3-59 07/06/04 067A B 3.3-108 04/09/04 044A B 3.3-157 08/01/98 223 B 3.3-60 10/20/03 065 B 3.3-109 08/01/98 223 B 3.3-158 04/09/04 044A B 3.3-61 10/20/03 065 B 3.3-110 10/05/12 283 B 3.3-159 04/09/04 044A B 3.3-62 10/20/03 065 B 3.3-111 08/01/98 223 B 3.3-160 08/01/98 223 B 3.3-63 09/11/06 088 B 3.3-112 08/01/98 223 B 3.3-161 02/09/07 074A B 3.3-64 04/18/05 064 B 3.3-113 08/01/98 223 B 3.3-162 02/09/07 074A B 3.3-65 04/18/05 064 B 3.3-114 08/01/98 223 B 3.3-163 04/09/04 044A B 3.3-66 07/06/04 067A B 3.3-115 08/01/98 223 B 3.3-164 08/01/98 223 B 3.3-67 04/27/12 120 B 3.3-116 08/01/98 223 B 3.3-165 08/01/98 223 B 3.3-68 04/27/12 120 B 3.3-117 04/09/04 044A B 3.3-166 08/01/98 223 B 3.3-69 07/06/04 067A B 3.3-118 08/01/98 223 B 3.3-167 08/01/98 223 B 3.3-70 08/01/98 223 B 3.3-119 08/01/98 223 B 3.3-168 04/09/04 044A B 3.3-71 08/01/98 223 B 3.3-120 04/09/04 044A B 3.3-169 08/01/98 223 B 3.3-72 04/18/05 064 B 3.3-121 08/01/98 223 B 3.3-170 06/29/00 003 B 3.3-73 04/27/12 120 B 3.3-122 08/01/98 223 B 3.3-171 06/29/00 003 B 3.3-74 04/27/12 120 B 3.3-123 08/01/98 223 B 3.3-172 06/29/00 003 B 3.3-75 08/01/98 223 B 3.3-124 08/01/98 223 B 3.3-173 06/29/00 003 B 3.3-76 08/01/98 223 B 3.3-125 08/01/98 223 B 3.3-174 06/29/00 003 B 3.3-77 08/01/98 223 B 3.3-126 08/01/98 223 B 3.3-175 06/29/00 003 B 3.3-78 11/07/01 044 B 3.3-127 08/01/98 223 B 3.3-176 06/29/00 003 B 3.3-79 08/01/98 223 B 3.3-128 08/01/98 223 B 3.3-177 06/29/00 003 B 3.3-80 08/25/10 123 B 3.3-129 08/01/98 223 B 3.3-178 06/29/00 003 B 3.3-81 08/25/10 123 B 3.3-130 08/01/98 223 B 3.3-179 06/29/00 003 B 3.3-82 11/07/01 044 B 3.3-131 08/01/98 223 B 3.3-180 06/29/00 003 B 3.3-83 08/0-1/98 223 B 3.3-132 08/01/98 223 B 3.3-181 06/29/00 003 B 3.3-84 04/27/12 120 B 3.3-133 08/01/98 223 B 3.3-182 06/29/00 003 B 3.3-85 04/27/12 120 B 3.3-134 08/01/98 223 B 3.3-183 06/29/00 003 B 3.3-86 04/27/12 120 B 3.3-135 08/01/98 223 B 3.3-184 06/29/00 003 B 3.3-87 04/09/04 044A B 3.3-136 08/01/98 223 B 3.3-185 02/09/07 074A B 3.3-88 08/01/98 223 B 3.3-137 04/27/12 120 B 3.3-186 04/27/12 120 B 3.3-89 11/02/98 005 B 3.3-138 04/27/12 120 B 3.3-187 04/27/12 120 B 3.3-90 08/01/98 223 B 3.3-139 04/27/12 120 B 3.3-188 04/27/12 120 B 3.3-91 08/01/98 223 B 3.3-140 08/01/98 223 B 3.3-189 06/29/00 003 B 3.3-92 08/01/98 223 B 3.3-141 08/01/98 223 B 3.3-190 08/01/98 223 B 3.3-93 08/01/98 223 B 3.3-142 11/07/01 044 B 3.3-191 08/01/98 223 B 3.3-94 04/27/12 120 B 3.3-143 11/07/01 044 B 3.3-192 08/01/98 223 B 3.3-95 04/27/12 120 B 3.3-144 08/01/98 223 B 3.3-193 08/01/98 223 B 3.3-96 08/01/98 223 B 3.3-145 08/01/98 223 B 3.3-194 05/16/01 037 B 3.3-97 08/01/98 223 B 3.3-146 08/01/98 223 B 3.3-195 05/16/01 037 B 3.3-98 08/18/06 084 B 3.3-147 08/01/98 223 B 3.3-196 08/01/98 223 B 3.3-99 08/01/98 223 B 3.3-148 04/27/12 120 B 3.3-197 08/01/98 223 B 3.3-100 04/09/04 044A B 3.3-149 04/27/12 120 B 3.3-198 04/27/12 120 B 3.3-101 08/18/06 084 B 3.3-150 04/27/12 120 B 3.3-199 04/27/12 120 B 3.3-102 08/01/98 223 B 3.3-151 02/09/07 074A B 3.3-200 04/27/12 120 B 3.3-103 08/01/98 223 B 3.3-152 08/01/98 223 B 3.3-201 08/01/98 223

Page 3 of 5 LIST OF EFFECTIVE PAGES Appendix A to DPR-49 Technical Specifications Bases Revision Date 09/26/12 Pane Date Rev. Page Date Rev. Page Date Rev B 3.3-202 08/01/98 223 B 3.4-21 08/01/98 223 B 3.5-8 08/01/98 223 B 3.3-203 04/09/04 044A B 3.4-22 08/01/98 223 B 3.5-9 08/01/98 223 B 3.3-204 08/01/98 223 B 3.4-23 08/01/98 223 B 3.5-10 08/01/98 223 B 3.3-205 04/18/05 064 B 3.4-24 08/01/98 223 B 3.5-11 08/01/98 223 B 3.3-206 08/01/98 223 B 3.4-25 04/27/12 120 B 3.5-12 11/07/01 044 B 3.3-207 04/27/12 120 B 3.4-26 08/01/98 223 B 3.5-13 04/27/12 120 B 3.3-208 04/27/12 120 B 3.4-27 04/30/99 005 B 3.5-14 04/27/12 120 B 3.3-209 04/09/04 044A B 3.4-28 05/16/01 045 B 3.5-15 04/27/12 120 B 3.3-210 04/09/04 044A B 3.4-29 05/16/01 045 B 3.5-16 04/27/12 120 B 3.3-211 08/01/98 223 B 3.4-30 05/16/01 045 B 3.5-17 04/27/12 120 B 3.3-212 04/27/12 120 B 3.4-31 04/18/05 064 B 3.5-18 09/26/12 129 B 3.3-213 04/27/12 120 B 3.4-32 04/27/12 120 B 3.5-19 09/26/12 129 B 3.3-214 04/27/12 120 B.3.4-32a 04/27/12 120 B 3.5-20 04/09/04 044A B 3.3-215 11/02/98 005 B 3.4-33 04/09/04 044A B 3.5-21 08/01/98 223 B 3.3-216 11/02/98 005 B 3.4-34 08/20/01 037 B 3.5-22 10/05/12 283 B 3.3-217 08/01/98 223 B 3.4-35 04/18/05 064 B 3.5-23 08/01/98 223 B 3.3-218 08/01/98 223 B 3.4-36 04/27/12 120 B 3.5-24 08/01/98 223 B 3.3-219 08/01/98 223 B 3.4-37 08/01/98 223 B 3.5-25 10/05/12 283 B 3.3-220 08/01/98 223 B 3.4-38 10/30/00 026A B 3.5-26 04/27/12 120 B 3.3-221 10/20/03 066 B 3.4-39 04/18/05 064 B 3.5-27 08/01/98 223 B 3.3-222 04/27/12 120 B 3.4-40 08/01/98 223 B 3.5-28 04/09/04 044A B 3.3-223 04/27/12 120 B 3.4-41 04/27/12 120 B 3.5-29 04/18/05 064 B 3.3-224 08/01/98 223 B 3.4-42 08/01/98 223 B 3.5-30 04/27/12 120 B 3.3-225 08/01/98 223 B 3.4-43 08/01/98 223 B 3.5-31 04/27/12 120 B 3.3-226 08/01/98 223 B 3.4-44 10/30/00 026A B 3.5-32 04/27/12 120 B 3.3-227 08/01/98 223 B 3.4-45 08/01/98 223 B 3.5-33 04/27/12 223 B 3.3-228 08/01/98 026A B 3.4-46 08/01/98 223 B 3.6-1 08/01/98 223 B 3.3-229 04/27/12 120 B 3.4-47 04/27/12 120 B 3.6-2 08/01/98 223 B 3.3-230 04/27/12 120 B 3.4-48 08/01/98 223 B 3.6-3 04/09/04 044A B 3.4-1 08/01/98 223 B 3.4-49 08/01/98 223 B 3.6-4 08/01/98 223 B 3.4-2 08/01/98 223 B 3.4-50 08/01/98 223 B 3.6-5 04/27/12 120 B 3.4-3 11/07/01 044 B 3.4-51 04/30/99 017 B 3.6-6 08/01/98 223 B 3.4-4 11/07/01 044 B 3.4-52 04/30/99 017 B 3.6-7 11/07/01 044 B 3.4-5 08/01/98 223 B 3.4-53 04/30/99 017 B 3.6-8 08/01/98 223 B 3.4-6 08/01/98 223 B 3.4-54 04/27/12 120 B 3.6-9 08/01/98 223 B 3.4-7 08/01/98 223 B 3.4-55 04/30/99 017 B 3.6-10 08/01/98 223 B 3.4-8 04/27/12 120 B 3.4-56 04/27/12 120 B 3.6-11 08/01/98 223 B 3.4-9 04/09/04 044A B 3.4-57 04/27/12 120 B 3.6-12 08/01/98 223 B 3.4-10 08/01/98 223 B 3.4-58 04/09/04 044A B 3.6-13 04/27/12 120 B 3.4-11 08/01/98 223 B 3.4-59 10/26/07 097 B 3.6-14 9/30/10 104 B 3.4-12 08/01/98 223 B 3.4-60 04/27/12 120 B 3.6-15 02/09/07 074A B 3.4-13 04/27/12 120 B 3.4-61 10/26/07 097 B 3.6-16 9/30/10 104 B 3.4-14 04/09/04 044A B 3.5-1 08/01/98 223 B 3.6-17 9/30/10 104 B 3.4-15 08/01/98 223 B 3.5-2 08/01/98 223 B 3.6-18 09/30/10 104 B 3.4-16 11/07/01 044 B 3.5-3 08/01/98 223 B 3.6-19 07/02/99 006 B 3.4-17 08/01/98 223 B 3.5-4 10/10/08 112 B 3.6-20 09/30/10 104 B 3.4-18 08/01/98 223 B 3.5-5 10/10/08 112 B 3.6-21 09/30/10 104 B 3.4-19 09/26/12 129 B 3.5-6 10/10/08 112 B 3.6-22 09/30/10 104 B 3.4-20 09/26/12 129 B 3.5-7 04/18/05 064 B 3.6-23 09/30/10 104

Page 4 of 5 LIST OF EFFECTIVE PAGES Appendix A to DPR-49 Technical Specifications Bases Revision Date 09/26/12 Paoe Date Rev Page Date Rev Date R ev Date Rev B 3.6-24 09/30/10 104 B 3.6-73 Deleted B 3.7-24B 04/27/12 120 B 3.6-25 09/30/10 104 B 3.6-74 07/27/07 083A B 3.7-24C 04/27/12 120 B 3.6-26 04/27/12 120 B 3.6-75 07/27/07 083A B 3.7-25 12/18/08 223 B 3.6-27 04/27/12 120 B 3.6-76 04/27/12 120 B 3.7-26 12/18/08 223 B 3.6-28 04/27/12 120 B 3.6-77 07/27/07 083A B 3.7-27 12/18/08 113 B 3.6-29 4/16/10 096A B 3.6-78 05/16/01 037 B 3.7-28 01/18/08 068 B 3.6-30 11/07/01 044 B 3.6-79 05/16/01 037 B 3.7-29 04/27/12 120 B 3.6-31 08/01/98 223 B 3.6-80 05/16/01 037 B 3.7-30 04/09/04 044A B 3.6-32 04/27/12 120 B 3.6-81 04/27/12 120 B 3.7-31 08/01/98 223 B 3.6-33 08/01/98 223 B 3.6-82 04/09/04 044A B 3.7-32 04/27/12 120 B 3.6-34 08/01/98 223 B 3.6-83 09/30/10 104 .B 3.7-33 08/25/10 123 B 3.6-35 09/26/12 129 B 3.6-84 09/30/10 104 B 3.7-34 02/23/09 115 B 3.6-36 09/26/12 129 B 3.6-85 05/16/01 037 B 3.7-35 04/27/12 120 B 3.6-37 08/01/98 223 B 3.6-86 09/30/10 104 B 3.7-36 04/27/12 120 B 3.6-38 08/01/98 223 B 3.6-87 09/30/10 104 B 3.7-37 04/09/04 044A B 3.6-39 08/01/98 223 B 3.6-88 04/27/12 120 B 3.7-38 04/27/12 120 B 3.6-40 08/01/98 223 B 3.6-89 04/27/12 120 B 3.7-39 04/09/04 044A B 3.6-41 08/01/98 223 B 3.6-90 04/09/04 044A B 3.7-40 04/09/04 044A B 3.6-42 04/27/12 120 B 3.6-91 08/20/01 037 B 3.7-41 07/02/99 006 B 3.6-43 08/01/98 223 B 3.6-92 05/16/01 223 B 3.7-42 07/02/99 006 B 3.6-44 04/09/04 044A B 3.6-93 05/16/01 037 B 3.7-43 07/02/99 006 B 3.6-45 08/01/98 223 B 3.6-94 04/27/12 120 B 3.7-44 04/27/12 120 B 3.6-46 08/01/98 223 B 3.6-95 04/27/12 120 B 3.8-1 04/09/04 044A B 3.6-47 04/27/12 120 B 3.6-96 04/09/04 044A B 3.8-2 10/10/08 111 B 3.6-48 04/27/12 120 B 3.7-1 04/09/04 044A B 3.8-3 04/09/04 044A B 3.6-49 08/01/98 044A B 3.7-2 04/09/04 044A B 3.8-4 06/09/06 082 B 3.6-50 11/07/01 223 B 3.7-3 08/01/98 044A B 3.8-5 06/09/06 082 B 3.6-51 11/02/98 005 B 3.7-4 04/18/05 064 B 3.8-6 06/09/06 082 B 3.6-52 08/01/98 223 B 3.7-5 08/01/98 223 B 3.8-7 08/01/98 223 B 3.6-53 04/27/12 120 B 3.7-6 04/27/12 120 B 3.8-8 09/26/08 lOlA B 3.6-54 04/09/04 044A B 3.7-7 04/02/09 095 B 3.8-9 09/26/08 lOlA B 3.6-55 08/01/98 223 B 3.7-8 04/02/09 095 B 3.8-10 09/26/08 101A B 3.6-56 08/01/98 223 B 3.7-9 04/02/09 095 B 3.8-11 09/26/08 lOlA B 3.6-57 04/27/12 120 B 3.7-10 04/27/12 120 B 3.8-12 09/26/08 lOlA B 3.6-58 08/01/98 223 B 3.7-11 04/27/12 120 B 3.8-13 09/26/08 lOlA B 3.6-59 11/07/01 044 B 3.7-12 04/27/12 120 B 3.8-14 09/26/08 101A B 3.6-60 11/07/01 044 B 3.7-13 04/09/04 044A B 3.8-15 04/27/12 120 B 3.6-61 08/01/98 223 B 3.7-14 05/27/11 127 B 3.8-16 04/27/12 120 B 3.6-62 08/01/98 223 B 3.7-15 08/01/98 223 B 3.8-17 04/27/12 120 B 3.6-63 04/27/12 120 B 3.7-16 08/01/98 223 B 3.8-18 04/27/12 120 B 3.6-64 04/09/04 044A B 3.7-17 04/27/12 120 B 3.8-19 04/27/12 120 B 3.6-65 10/20/99 018 B 3.7-18 12/18/08 092 B 3.8-20 04/27/12 120 B 3.6-66 10/20/99 018 B 3.7-19 12/18/08 092 B 3.8-21 04/27/12 120 B 3.6-67 08/01/98 223 B 3.7-20 12/18/08 092 B 3.8-22 04/27/12 120 B 3.6-68 04/27/12 120 B 3.7-21 12/18/08 092 B 3.8-23 04/09/04 044A B 3.6-69 07/27/07 083A B 3.7-22 12/18/08 092 B 3.8-24 04/27/12 120 B 3.6-70 Deleted B 3.7-23 12/18/08 092 B 3.8-25 06/09/06 082 B 3.6-71 Deleted B 3.7-24 12/18/08 092 B 3.8-26 08/01/98 223 B 3.6-72 Deleted B 3.7-24A 04/27/12 120 B 3.8-27 08/01/98 223

Page 5 of 5 LIST OF EFFECTIVE PAGES Appendix A to DPR-49 Technical Specifications Bases Revision Date 09/26/12 Pane Date Rev. Pa2e Date Rev. Paee Date Rev.

B 3.8-28 08/01/98 223 B 3.8-77 11/02/98 005 B 3.10-16 08/01/98 223 B 3.8-29 08/01/98 223 B 3.8-78 04/27/12 120 B 3.10-17 08/01/98 223 B 3.8-30 10/30/00 026A B 3.9-1 08/01/98 223 B 3.10-18 08/01/98 223 B 3.8-31 10/30/00 026A B 3.9-2 08/01/98 223 B 3.10-19 08/01/98 223 B 3.8-32 08/18/06 085 B 3.9-3 08/01/98 223 B 3.10-20 04/27/12 120 B 3.8-33 08/18/06 085 B 3.9-4 04/27/12 120 B 3.10-21 08/01/98 223 B 3.8-34 08/01/98 223 B 3.9-5 08/01/98 223 B 3.10-22 08/01/98 223 B 3.8-35 10/27/06 086 B 3.9-6 08/01/98 223 B 3.10-23 08/01/98 223 B 3.8-36 08/01/98 223 B 3.9-7 04/27/12 120 B 3.10-24 08/01/98 223 B 3.8-37 04/27/12 120 B 3.9-8 04/27/12 120 B 3.10-25 04/27/12 120 B 3.8-38 08/01/98 223 B 3.9-9 08/01/98 223 B 3.10-26 08/01/98 223 B 3.8-39 04/27/12 120 B 3.9-10 04/27/12 120 B 3.10-27 08/01/98 223 B 3.8-40 04/27/12 120 B 3.9-11 04/09/04 044A B 3.10-28 04/27/12 120 B 3.8-41 08/01/98 223 B 3.9-12 08/01/98 223 B 3.10-29 08/01/98 223.

B 3.8-42 06/02/09 118 B 3.9-13 08/01/98 223 B 3.10-30 08/01/98 223 B 3.8-43 04/09/04 044A B 3.9-14 08/01/98 223 B 3.10-31 08/01/98 223 B 3.8-44 08/01/98 223 B 3.9-15 04/09/04 044A B 3.10-32 08/01/98 223 B 3.8-45 11/22/02 048 B 3.9-16 08/01/98 223 B 3.10-33 08/01/98 223 B 3.8-46 11/22/02 048 B 3.9-17 08/01/98 223 B 3.10-34 08/01/98 223 B 3.8-47 04/27/12 120 B 3.9-18 04/27/12 120 B 3.10-35 08/01/98 223 B 3.8-48 04/27/12 120 B 3.9-19 04/09/04 044A B 3.10-36 08/01/98 223 B 3.8-49 04/27/12 120 B 3.9-20 08/01/98 223 B 3.10-37 04/27/12 120 B 3.8-50 01/24/03 060 B 3.9-21 04/27/12 120 B 3.10-38 04/27/12 120 B 3.8-51 04/27/12 120 B 3.9-22 08/01/98 223 B 3.8-52 04/09/04 044A B 3.9-23 10/30/00 223 B 3.8-53 08/01/98 223 B 3.9-24 06/12/09 117 B 3.8-54 08/01/98 223 B 3.9-25 03/17/99 019 B 3.8-55 04/09/04 044A B 3.9-26 04/27/12 120 B 3.8-56 04/09/04 044A B 3.9-27 08/01/98 223 B 3.8-57 06/12/09 118 B 3.9-28 10/30/00 026A B 3.8-58 06/12/09 118 B 3.9-29 03/17/99 019 B 3.8-59 04/27/12 120 B 3.9-30 08/01/98 223 B 3.8-60 08/01/98 223 B 3.9-31 04/27/12 120 B 3.8-61 08/01/98 223 B 3.10-1 02/16/07 078 B 3.8-62 04/09/04 044A B 3.10-2 02/16/07 078 B 3.8-63 04/09/04 044A B 3.10-3 02/16/07 078 B 3.8-64 11/02/98 005 B 3.10-4 02/16/07 078 B 3.8-65 08/01/98 223 B 3.10-5 02/16/07 078 B 3.8-66 08/01/98 223 B 3.10-5A 02/16/07 078 B 3.8-67 08/01/98 223 B 3.10-6 08/01/98 223 B 3.8-68 08/01/98 223 B 3.10-7 08/01/98 223 B 3.8-69 08/01/98 223 B 3.10-8 08/01/98 223 B 3.8-70 11/02/98 005 B 3.10-9 08/01/98 223 B 3.8-71 04/27/12 120 B 3.10-10 04/27/12 120 B 3.8-72 04/27/12 120 B 3.10-11 08/01/98 223 B 3.8-73 08/01/98 223 B 3.10-12 08/01/98 223 B 3.8-74 04/09/04 044A B 3.10-13 08/01/98 223 B 3.8-75 08/01/98 223 B 3.10-14 08/01/98 223 B 3.8-76 11/02/98 005 B 3.10-15 04/27/12 120

ECCS Instrumentation B 3.3.5.1 BASES APPLICABLE 1.d, 2.f. Core Spray and Low Pressure Coolant Iniection Pump SAFETY Discharge Flow-Low (Bypass) (continued)

ANALYSES, LCO, and that the closure of the minimum flow valve is initiated to allow the APPLICABILITY assumed flow into the core. Each channel of Pump Discharge Flow - Low Function (two CS channels, one per pump and two LPCI channels, one per loop) is only required to be OPERABLE when the associated ECCS is required to be OPERABLE to ensure that no single instrument failure can preclude the ECCS function.* Refer to LCO 3.5.1 and LCO 3.5.2 for Applicability Bases for the low pressure ECCS subsystems.

I

• Per footnote (e) to Function ld in Table 3.3.5.1-1, the CS minimum flow path instrumentation is not required to be OPERABLE in MODES 4 and 5 during RFO 23.

2.d. Reactor Vessel Shroud Level - Low The Reactor Vessel Shroud Level-Low Function is provided as a permissive to allow the RHR System to be manually aligned from the LPCI mode to the suppression pool cooling/spray or drywell spray modes with a LPCI initiation signal still present. This function ensures: 1) that the permissive is removed prior to reaching two thirds core height when vessel level is decreasing, and 2) that the permissive is not restored until two thirds core height is reached when vessel level is increasing. This ensures that LPCI is available to prevent or minimize fuel damage. This function may be overridden during accident conditions as allowed by plant procedures to allow containment cooling/spray regardless of the level present in the shroud.

Reactor Vessel Shroud Level - Low signals are initiated from four level transmitters that sense the difference between the pressure due to a constant column of water (reference leg) and the pressure due to the actual water level (variable leg) in the vessel. The Reactor Vessel Shroud Level - Low Allowable Value is chosen to allow the low pressure core flooding systems to activate and provide adequate cooling before allowing a manual transfer.

Four channels of the Reactor Vessel Shroud Level - Low Function are only required to be OPERABLE in MODES 1, 2, and 3. In MODES 4 and 5, the specified initiation time of the LPCI subsystems is not assumed, and other administrative controls are adequate to control the valves that this Function isolates (since the containment cooling mode of RHR is not required to be OPERABLE in MODES 4 and 5 and is normally not used).

(continued)

DAEC B 3.3-110 TSCR-135

ECCS - Shutdown B 3.5.2 BASES LCO Vessel (RPV)*. Each LPCI subsystem consists of one motor (continued) driven RHR pump, piping, and valves to transfer water from the suppression pool to the RPV. Only a single RHR pump is required per subsystem because of the larger injection capacity in relation to a CS subsystem. In MODES 4 and 5, the RHR System cross tie valve is not required to be open. The necessary portions of Emergency Service Water are also required to provide appropriate cooling to each required CS subsystem. One LPCI subsystem may be aligned for decay heat removal and considered OPERABLE for the ECCS function, if it can be manually realigned (remote or local) to the LPCI mode and is not otherwise inoperable. Because of low pressure and low temperature conditions in MODES 4 and 5, sufficient time will be available to manually align and initiate LPCI subsystem operation to provide core cooling prior to postulated fuel uncovery.

APPLICABILITY OPERABILITY of the low pressure ECCS subsystems is required in MODES 4 and 5 to ensure adequate coolant inventory and sufficient heat removal capability for the irradiated fuel in the core in case of an inadvertent draindown of the vessel. Requirements for ECCS OPERABILITY during MODES 1, 2, and 3 are discussed in the Applicability section of the Bases for LCO 3.5.1.

ECCS subsystems are not required to be OPERABLE during MODE 5 with the spent fuel storage pool gates removed and the water level maintained at > 21 ft 1 inch above the RPV flange.

This provides sufficient coolant inventory to allow operator action to terminate the inventory loss prior to fuel uncover in case of an inadvertent draindown.

The Automatic Depressurization System is not required to be OPERABLE during MODES 4 and 5 because the RPV pressure is

< 100 psig, and the CS and LPCI subsystems can provide core cooling without any depressurization of the primary system.

The High Pressure Coolant Injection System is not required to be OPERABLE during MODES 4 and 5 since the low pressure ECCS subsystems can provide sufficient flow to the vessel and because insufficient reactor pressure is available to drive the HPCI turbine.

• During Refuel Outage (RFO) 23, the CS minimum flow path is not required to be available for CS to be considered OPERABLE.

(continued)

DAEC B 3.5-22 TSCR-1 35

ECCS - Shutdown B 3.5.2 BASES SURVEILLANCE SR 3.5.2.1 and SR 3.5.2.2 (continued)

REQUIREMENTS When suppression pool level is < 8.0 ft, the CS System is considered OPERABLE only if it can take suction from the CST, and the CST water level is sufficient to provide the required NPSH for the CS pump. Therefore, a verification that either the suppression pool water level is >_8.0 ft or that CS is aligned to take suction from the CSTs and the CSTs contain

> 75,000 gallons of water, equivalent to 11 ft in one CST or > 7 ft in both CSTs, ensures that the CS System can supply at least 75,000 gallons.of makeup water to the RPV. However, as noted, only one required CS subsystem may take credit for the CST option during OPDRVs. During OPDRVs, the volume in the CST may not provide adequate makeup if the RPV were completely drained. Therefore, only one CS subsystem is allowed to use the CST. This ensures the other required ECCS subsystem has adequate makeup volume.

The Surveillance Frequency is controlled under the Surveillance Frequency Control Program. The Frequency of these SRs was developed considering operating experience related to suppression pool water level and CST water level variations during the applicable MODES. Furthermore, the Frequency is considered adequate in view of other indications available in the control room to alert the operator to an abnormal suppression pool or CST water level condition.

SIR 3.5.2.3, SR 3.5.2.5, and SIR 3.5.2.6 The Bases provided for SIR 3.5.1.1, SR 3.5.1.4, and SIR 3.5.1.7 are applicable to SR 3.5.2.3, SIR 3.5.2.5, and SR 3.5.2.6, respectively.

S R 3.5.2.4 Verifying the correct alignment for power operated and automatic valves in the ECCS flow paths provides assurance that the proper flow paths will exist for ECCS operation.* This SR does not apply to valves that are locked, sealed, or otherwise secured in position, since these valves were verified to be in the correct position prior to locking, sealing, or securing. A valve that receives an initiation signal is allowed to be in a nonaccident position provided the

• During Refuel Outage (RFO) 23, the CS minimum flow path is not required to be available for CS to be considered OPERABLE.

(continued)

DAEC B 3.5-25 TSCR-1 35