ND-22-0664, ITAAC Closure Notification on Completion of ITAAC 2.5.01.03e (Index Number 515)

ITAAC Closure Notification on Completion of ITAAC 2.5.01.03e (Index Number 515)

ML22230D021
Person / Time
Site:	Vogtle
Issue date:	08/18/2022
From:	Coleman J Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
ITAAC 2.5.01.03e, ND-22-0664
Download: ML22230D021 (7)

Text

Jamie M. Coleman 7825 River Road A Southern Nuclear Regulatory Affairs Director Waynesboro, GA 30830 706-848-6926 tel Vogtle 3 & 4 August 18, 2022 Docket No.: 52-026 ND-22-0664 10 CFR 52 .99(c)(1)

U.S. Nuclear Regulatory Commission Document Control Desk Washington , DC 20555-0001 Southern Nuclear Operating Company Vogtle Electric Generating Plant Unit 4 ITAAC Closure Notification on Completion of ITAAC 2.5.01 .03e [Index Number 5151 Ladies and Gentlemen :

In accordance with 10 CFR 52.99(c)(1) , the purpose of this letter is to notify the Nuclear Regulatory Commission (NRC) of the completion of Vogtle Electric Generating Plant (VEGP) Unit 4 Inspections, Tests, Analyses , and Acceptance Criteria (ITAAC) Item 2.5.01 .03e [Index Number 5151. This ITAAC verifies that the Diverse Actuation System (DAS) sensors identified in Combined License Appendix C Table 2.5.1-3 are used for DAS input and are separate from those being used by the Protection and Safety Monitoring System (PMS) and Plant Control System (PLS) . The closure process for this ITAAC was based on the guidance described in NEI 08-01 , "Industry Guideline for the ITAAC Closure Process under 10 CFR Part 52 ," which was endorsed by the NRC in Reg*ulatory Guide 1.215.

This letter contains no new NRC regulatory commitments . Southern Nuclear Operating Company (SNC) requests NRC staff confirmation of this determination and publication of the required notice in the Federal Register per 10 CFR 52.99.

If there are any questions, please contact Kelli Roberts at 706-848-6991 .

Respectfully submitted ,

i~~

Jamie M. Coleman Regulatory Affairs Director Vogtle 3 & 4

Enclosure:

Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 2.5.01 .03e [Index Number 5151 JMC/T JC/sfr

U.S. Nuclear Regulatory Commission ND-22-0664 Page 2 of 3 To:

Southern Nuclear Operating Company/ Georgia Power Company Mr. Peter P. Sena Ill Mr. D. L. McKinney Mr. H. Nieh Mr. G. Chick Mr. S. Stimac Mr. P. Martino Mr. D. Pitts Mr. J.B. Williams Mr. A. S. Parton Ms. K. A. Roberts Ms. J.M . Coleman Mr. C. T. Defnall Mr. C. E. Morrow Mr. K. J. Drudy Mr. J. M. Fisher Mr. R. L. Beilke Mr. S. Leighty Ms. A. C. Chamberlain Mr. J. C. Haswell Document Services RTYPE : VND .LI.L06 File AR.01 .02 .06 Nuclear Regulatory Commission Mr. M. King Mr. G. Bowman Ms. A. Veil Mr. G. J. Khouri Mr. C. J. Even Mr. B. J. Kemker Ms. N. C. Coovert Mr. C. Welch Mr. J. Gaslevic Mr. 0 . Lopez-Santiago Mr. G. Armstrong Mr. M. Webb Mr. T. Fredette Mr. C. Santos Mr. B. Davis Mr. J. Vasquez Mr. J. Eargle Ms. K. Mccurry Mr. J. Parent Mr. B. Griman Mr. V. Hall

U.S. Nuclear Regulatory Commission ND-22-0664 Page 3 of 3 Oglethorpe Power Corporation Mr. R. B. Brinkman Mr. E. Rasmussen Municipal Electric Authority of Georgia Mr. J. E. Fuller Mr. S. M. Jackson Dalton Utilities Mr. T. Bundros Westinghouse Electric Company, LLC Dr. L. Oriani Mr. D. C. Durham Mr. M. M. Corletti Mr. Z. S. Harper Ms. S.L. Zwack Other Mr. S. W. Kline , Bechtel Power Corporation Ms. L. Matis , Tetra Tech NUS, Inc.

Dr. W . R. Jacobs, Jr., Ph .D., GOS Associates, Inc.

Mr. S. Roetger, Georgia Public Service Commission Mr. R. L. Trokey, Georgia Public Service Commission Mr. K. C. Greene, Troutman Sanders Mr. S. Blanton , Balch Bingham

U.S. Nuclear Regulatory Commission ND-22-0664 Enclosure Page 1 of 4 Southern Nuclear Operating Company ND-22-0664 Enclosure Vogtle Electric Generating Plant (VEGP) Unit 4 Completion of ITAAC 2.5.01.03e [Index Number 515]

U.S. Nuclear Regulatory Commission ND-22-0664 Enclosure Page 2 of 4 ITAAC Statement Design Commitment 3.e) The sensors identified on Table 2.5.1-3 are used for DAS input and are separate from those being used by the PMS and plant control system.

Inspections, Tests, Analyses Inspection of the as-built system will be performed except for the core exit temperature sensor installation .

Acceptance Criteria The sensors identified on Table 2.5.1-3 are used by DAS and are separate from those being used by the PMS and plant control system .

ITAAC Determination Basis Inspection of the as-built Diverse Actuation System (DAS) was performed to demonstrate that the sensors identified in Combined License (COL) Appendix C Table 2.5.1-3 (Attachment A) ,

except for the core exit temperature sensor installation, are used for Diverse Actuation System (DAS) input and are separate from those being used by the Protection and Safety Monitoring System (PMS) and Plant Control System (PLS) . Inspection of the core exit temperature sensors was performed to demonstrate that the sensors are used for DAS input and are separate from those being used by the PMS and PLS .

The DAS System Specification Document (Reference 1) requires that the sensors identified in Attachment A are used for DAS input and are separate and independent from the sensor inputs in the PMS and plant control system. Construction drawing SV4-DAS-J0-001 , (Reference 2) ,

illustrates the DAS sensor flow and indication architecture . An inspection of construction drawings, completed construction records, and select field inspections were performed in accordance with SV4-DAS-ITR-800515 (Reference 3) , to confirm that the sensors identified in Attachment A were installed , except for the core exit temperature sensor installation, per the DAS sensor input requirements of Reference 1 and are separate from those being used by the PMS and plant control system .

The inspection of the DAS Core Exit Temperature sensors was performed using a combination of methods in accordance with Reference 3. This included inspections of plant drawings and quality release and certificate of conformance records to ensure the Core Exit Temperature sensors designated for DAS are separate from those being used by the PMS and PLS .

The inspection results are documented in Reference 3 and confirm that the sensors identified in Attachment A are used by DAS and are separate from those being used by the PMS and plant control system.

References 1 through 3 are available for NRC inspection as part of the Unit 4 ITAAC 2.5.01 .03e Completion Package (Reference 5).

U.S. Nuclear Regulatory Commission ND-22-0664 Enclosure Page 3 of 4 ITAAC Finding Review In accordance with plant procedures for ITAAC completion , Southern Nuclear Operating Company performed a review of all lTAAC findings pertaining to the subject ITAAC and associated corrective actions. This review found there are no relevant findings associated with the ITAAC . The ITAAC completion review is documented in the ITAAC Completion Package 2.5.01 .03e (Reference 5) and is available for NRG review.

ITAAC Completion Statement Based on the above information , SNC hereby notifies the NRG that ITAAC 2.5 .01 .03e was performed for VEGP Unit 4 and that the prescribed acceptance criteria were met.

Systems, structures , and components verified as part of this ITAAC are being maintained in their as-designed , ITAAC compliant condition in accordance with approved plant programs and procedures.

References (available for NRC inspection)

1. SV4-DAS-J4-001 , "AP1000 Diverse Actuation System System Design Specification",

Revision 3

2. SV4-DAS-J0-001 , "Diverse Actuation System (DAS) Sensor Flow and Indication Architecture",

Revision 1

3. SV4-DAS-ITR-800515, "Unit 4 Inspection Results of Diverse Actuation System (DAS)

Sensor Hardware Diversity: ITAAC 2.5.01 .03e NRG Index Number: 515", Revision 1

4. NEI 08-01 , "Industry Guideline for the ITAAC Closure Process Under 10 CFR Part 52",

Revision 5 - Corrected

5. 2.5.01 .03e-U4-CP-Rev0, ITAAC Completion Package"

U.S. Nuclear Regulatory Commission ND-22-0664 Enclosure Page 4 of 4 Attachment A

• Excerpt from COL Table 2.5.1-3

• Equipment Name *Tag Number Reactor Coolant System (RCS) Hot Leg Temperature RCS-300A RCS Hot Leg Temperature RCS-300B Steam Generator 1 Wide-range Level SGS-044 Steam Generator 1 Wide-range Level SGS-045 Steam Generator 2 Wide-range Level SGS-046 Steam Generator 2 Wide-range Level SGS-047 Pressurizer Water Level RCS-305A Pressurizer Water Level RCS-305B Containment Temperature VCS-053A Containment Temperature VCS-053B Core Exit Temperature IIS-009 Core Exit Temperature IIS-013 Core Exit Temperature IIS-030 Core Exit Temperature IIS-034 Rod Control Motor Generator Voltage PLS-001 Rod Control Motor Generator Voltage PLS-002