CP-202200273, Third Supplement to License Amendment Request (LAR) 20-006 Application to Revise Technical Specifications to Adopt Risk Informed Completion Times, TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative

Third Supplement to License Amendment Request (LAR)20-006 Application to Revise Technical Specifications to Adopt Risk Informed Completion Times, TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative

ML22201A080
Person / Time
Site:	Comanche Peak
Issue date:	07/20/2022
From:	Thomas McCool Luminant, Vistra Operating Co. (VistraOpCo)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CP-202200273, TXX-22062
Download: ML22201A080 (4)

Text

m Luminant Thomas P. McCool Site Vice President Comanche Peak Nuclear Power Plant (Vistra Operations Company LLC)

P.O. Box 1002 6322 North FM 56 Glen Rose, TX 76043 T 254.897.6042 CP-202200273 TXX-22062 July 20, 2022 U. S. Nuclear Regulatory Commission Ref 10 CFR 50.90 ATTN: Document Control Desk 10 CFR 50.91(a)(6)

Washington, DC 20555-0001 10 CFR 50.91(b)(l)

Subject:

Comanche Peak Nuclear Power Plant (CPNPP)

Docket Nos. 50-445 and 50-446 Third Supplement to License Amendment Request (LAR)20-006 APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT RISK INFORMED COMPLETION TIMES, TSTF-505, REVISION 2, "PROVIDE RISK-INFORMED EXTENDED COMPLETION TIMES - RITSTF INITIATIVE 4b (Accession No. ML21131A233)"

Reference:

1. Letter TXX-21046 from Thomas P. McCool to the NRC, License Amendment Request (LAR)20-006, APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT RISK INFORMED COMPLETION TIMES, TSTF-505, REVISION 2, "PROVIDE RISK-INFORMED EXTENDED COMPLETION TIMES - RITSTF INITIATIVE 4b," dated May 11, 2021 (Accession No. ML21131A233)

2. Letter TXX-21093 from Thomas P. McCool to the NRC, Supplement to License Amendment Request (LAR)20-006 APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT RISK INFORMED COMPLETION TIMES, TSTF-505, REVISION 2, "PROVIDE RISK INFORMED EXTENDED COMPLETION TIMES - RITSTF INITIATIVE 4b (Accession No. ML21194A078)"

3. Letter TXX-22002 from Thomas P. McCool to the NRC, Second Supplement to License Amendment Request (LAR)20-006 APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT RISK INFORMED COMPLETION TIMES, TSTF-505, REVISION 2, "PROVIDE RISK-INFORMED EXTENDED COMPLETION TIMES - RITSTF INITIATIVE 4b (Accession No. ML22048B490)"

Dear Sir or Madam:

Pursuant to 10 CFR 50.90 and 10 CFR 50.91, Vistra Operations Company LLC (Vistra OpCo) hereby submits a supplement to the license amendment request for the Comanche Peak Nuclear Power Plant (CPNPP) Unit 1 and Unit 2 Technical Specifications in connection with LAR 20-006, Revision to multiple specifications as requested in References 1 and 2. This third change supplement applies to both units.

This third supplement to the proposed amendment will modify Technical Specifications (TS) requirements for CPNPP to permit the use of Risk Informed Completion Times in accordance with TSTF-505, Revision 2, "Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b",

TXX-22062 Page 2 of2 (ADAMS Accession No. ML18183A493). A model safety evaluation was provided by the NRC to the TSTF on November 21, 2018 (ADAMS Accession No. ML18267A259). This supplement includes corrections to prior submittals.

This third supplement gives clarifying information regarding TS 3.3.2 ESFAS Instrumentation.

Specifically, Condition L is changed to follow the format of other conditions within TS 3.3.2 and removes redundant and unnecessary information. This change is an acceptable variation from TSTF-505, Revision 2.

In accordance with 10 CFR 50.91(b)(l), a copy of this third supplement for the proposed license amendment is being forwarded to the State of Texas.

Vistra OpCo has determined that this supplement does not change the No Significant Hazards Consideration provided in the Enclosure submitted by Reference 1.

This communication contains no new commitments regarding CPNPP Units 1 and 2.

Should you have any questions, please contact Garry Struble at (254) 897-6628 or Garry.Struble@luminant.com.

I state under penalty of perjury that the foregoing is true and correct.

Executed on July 20, 2022.

Sincerely, Thom

Attachment:

Revised Proposed Technical Specification (TS) 3.3.2 pages (markup)

Enclosure:

Technical Specification (TS) 3.3.2 Condition L variation from TSTF-505 c (email) - Scott Morris, Region IV [Scott.Morris@mc.gov]

Dennis Galvin, NRR [Dennis.Galvin@mc.gov]

John Ellegood, Senior Resident Inspector, CPNPP Uohn.Ellegood@mc.gov]

Neil Day, Resident Inspector, CPNPP [Neil.Day@mc.gov]

Mr. Robert Free [robert.free@dshs.state.tx.us]

Environmental Monitoring & Emergency Response Manager Texas Department of State Health Services Mail Code 1986 P.O. Box 149347 Austin, TX 78714-9347

Attachment to TXX-22062 ESFAS Instrumentation 3.3.2 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME L. One or more required L.1 Verify interlock is in required state for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> ohannel(s) inoperable. existing unit condition .

channels 00 L.2.1 Be in MODE: 3. 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> INSERT TS 3.3.2 ANG Conditions M, N, and r 0 L.2.2 Be in MODE: 4. 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> SURVEILLANCE REQUIREMENTS

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NOTE-------------------------------------------------------------

Refer to Table 3.3.2-1 to determine which SRs apply for each ESFAS Function.

SURVEILLANCE FREQUENCY SR 3.3.2.1 Perform CHANNEL CHECK. In accordance with the Surveillance Frequency Control Program .

SR 3.3.2.2 Perform ACTUATION LOGIC TEST. In accordance with the Surveillance Frequency Control Program.

SR 3.3.2.3 Not Used .

COMANCHE PEAK - UNITS 1 AND 2 3.3-26 Amendment No. 4-W, 183

Enclosure to TXX-22062 Technical Specification (TS) 3.3.2 Condition L variation from TSTF-505 The Comanche Peak current TS 3.3.2 Condition L reads as follows; ACTIONS (continued)

CO DITION REQUIRED ACTIO COMP LETION TIME L. One or more required l. 1 Verify interlock is in required s a e for 1 our channel(s) inoperable. existing unit condition .

OR l.2.1 Be in MODE 3. 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> l.2.2 Be in MODE 4. 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> Comanche Peak has requested that TS 3.3.2 Condition L be as follows; ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME L. One or more channels L.1 Verify interlock is in 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> inoperable. required state for existing unit condition.

Please see Attachment to TXX-22062 for a markup of the current Comanche Peak TS 3.3.2.

The requested variation from TSTF-505, Revision 2 allows alignment with other conditions in TS 3.3.2 that are changed by TSTF-505 and includes Condition Lin default Condition N. This variation will aid the operators in application of Condition Las it will follow the same format as other conditions and utilizes default Condition N.

Deletion of "required" is supported by revision 5 to NUREG-1431, TS 3.3.2 in which Conditions B through Condition Odo not use "required." So, removing "required" from Condition L will establish consistency across "Required Actions" in TS 3.3.2 and aid the operators when applying Condition L. This is an administrative change because the use of "required" is assumed in other Conditions within TS 3.3.2 and is redundant. Also removing the parentheses from the '(s)' at the end of the word 'channel' corrects an unnecessary grammatical difference with other conditions within TS 3.3.2.