ML24193A344

Fourth 10-Year Interval, Second Period Owner’S Activity Report Number 3R24

ML24193A344
Person / Time
Site:	Palo Verde
Issue date:	07/11/2024
From:	Dilorenzo M Arizona Public Service Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
102-08832-MDD/CJS
Download: ML24193A344 (1)

Text

10 CFR 50.55a

Palo Verde Nuclear Generating Station P.O. Box 52034 Phoenix, AZ 85072 102-08832-MDD/CJS Mail Station 7636 July 11, 2024 Tel: (623) 393-3495

ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Palo Verde Nuclear Generating Station Unit 3 Docket No. STN 50-530 Fourth 10-Year Interval, Second Period Owners Activity Report Number 3R24

Pursuant to Title 10 of the Code of Federal Regulations 50.55a and in accordance with the American Society of Mechanical Engineers Boiler and Pressure Vessel Code Case N-532-5, Repair/Replacement Activity Documentation Requirements and Inservice Inspection Summary Report Preparation and Submission Section XI, Division 1, Arizona Public Service Company hereby submits the Owners Activity Report (Form OAR-1) for Unit 3 refueling outage 24 (3R24). The outage ended on May 12, 2024.

No commitments are being made to the NRC by this letter. Should you need further information regarding this submittal, please contact me at (623) 393-3495.

Sincerely, Dilorenzo, Michael Digitally signed by Dilorenzo, Michael D(Z99838)

D(Z99838) Date: 2024.07.11 09:48:14

-07'00'

Michael D. DiLorenzo Department Leader Nuclear Regulatory Affairs - Licensing

MDD/CJS/cr

Enclosure:

Unit 3 Twenty-Fourth Refueling Outage Owners Activity Report, Report 3R24

cc: J. D. Monninger NRC Region IV Regional Administrator W. T. Orders NRC NRR Project Manager for PVNGS N. Cuevas NRC Acting Senior Resident Inspector for PVNGS

A member of the STARS Alliance LLC Callaway Diablo Canyon Palo Verde Wolf Creek ENCLOSURE

Unit 3

Twenty-Fourth Refueling Outage Owners Activity Report

Report 3R24 FORM OAR-1 OWNERS ACTIVITY REPORT

Report Number: ________________________________________________________________________________________________3R24

Plant: ___________________________________________________________________________________________________________Palo Verde Generating Station, 5801 S. Wintersburg Road, Tonopah, Arizona 85354-7529

Unit No.: ___________ Commercial service date: ___________________ Refueling Outage No.: ___________________3 Jan 8, 1988 24 (if applicable)

Current inspection interval ______________________________________________________________________________________IWB,IWC,IWD,IWF = 4th ; IWE = 3rd ; IWL = 3rd ; SPT = 4th (1st, 2nd, 3rd, 4th, other)

Current inspection period _______________________________________________________________________________________IWB,IWC,IWD,IWF = 2nd ; IWE = 2nd ; IWL = 1st ; SPT = 2nd (1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the inspection plans ____________________________________________2013 Edition (IWE = 2007 Ed.,'08 Ad.)

Date and revision of inspection plans ___________________________________________________________________________ISI = 3/6/24 R2; IWE = 10/3/18 R0; IWL = 6/17/22 R0; SPT = 6/21/18 R0

Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans ____________________________________________________________________________2013 Edition

Code Cases used for inspection and evaluation:

_____________________________________________________________________________________________N-532-5, N-716-1, N-722-1, N-729-6, N-770-5, N-845, N-885 (if applicable)

CERTIFICATE OF CONFORMANCE

I certify that (a) the statements made in this report are correct; (b) the examinations and tests meet the Inspection Plan as required by the ASME Code,Section XI; and (c) the repair/replacement activities and evaluations supporting the completion of

_______________ conform to the requirements of Section XI. U3R24 (refueling outage number)

Folley, Roy Digitally signed by Folley, Roy C(Z07131)

Signed _________________________________________________________ Date: _____________________________________ C(Z07131)Date: 2024.07.03 11:18:37 -07'00'Jul 3, 2024

CERTIFICATE OF INSERVICE INSPECTION

I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and employed by _____________________________ of _______________________________ have inspected the items described in

• Hartford, Connecticut this Owners Activity Report, and state that, to the best of my knowledge and belief, the Owner has performed all activities represented by this report in accordance with the requirements of Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the repair/replacement activities and evaluation described in this report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or connected with this inspection.

Digitally signed by 7KH+DUWIRUG6WHDP%RLOHU,QVSHFWLRQDQG,QVXUDQFH&RPSDQ\\

Hogstrom, Hogstrom, Robert (YH2450)

Robert (YH2450) Date: 2024.07.03 11:32:40

__________________________________________ Commissions ____________________________________________________-07'00'N.B. 9685 "A, N, I, C" AZ 264

(Inspectors Signature) National Board, State, Province, and Endorsements Date: _____________________________________Jul 3, 2024

PV-E0796 Ver. 2 Table 1 3R24 Items with Flaws or Relevant Conditions That Required Evaluation for Continued Service

Examination Category and Item Description Evaluation Description Item Number None None None

Table 2 Abstract of 3R24 Repair/Replacement Activities Required for Continued Service

Code Component ID Description of Work Date Repair/Replacement Class Complete Plan Number SEAL INJECTION TO RCP 2B MANUAL ISOLATION VALVE 1 3PCHNV813 Replace valve due to degraded stem. New 4/30/2024 5333988-0 valve will be installed with half couplings welded to the valve body SEAL INJECTION TO RCP 2B MANUAL 1 3PCHNV813 ISOLATION VALVE 4/16/2024 5333988-3 Socket weld half couplings to valve to be installed by task 0 per DEC 18-07684-002

REPLACEMENT STEAM GENERATOR 1 3MRCEE01A Install Westinghouse mechanical plugs in SG 4/26/2024 5340281-0

3MRCEE01A "HOT" leg

REPLACEMENT STEAM GENERATOR 1 3MRCEE01A Install Westinghouse mechanical plugs in SG 4/26/2024 5340282-0

3MRCEE01A "COLD" leg

REPLACEMENT STEAM GENERATOR 1 3MRCEE01B Install Westinghouse mechanical plugs in SG 4/26/2024 5340283-0

3MRCEE01B "HOT" leg

REPLACEMENT STEAM GENERATOR 1 3MRCEE01B Install Westinghouse mechanical plugs in SG 4/26/2024 5340284-0

3MRCEE01B "COLD" leg

PRESSURIZER SAFETY RELIEF VALVE 1 3JRCEPSV0200 Replace the pressurizer relief valve with a 5/09/2024 5502249-0

reconditioned spare.

PRESSURIZER SAFETY RELIEF VALVE 1 3JRCEPSV0201 Replace the pressurizer relief valve with a 5/09/2024 5502250-0 reconditioned spare.

PRESSURIZER SAFETY RELIEF VALVE 1 3JRCEPSV0202 Replace the pressurizer relief valve with a 5/09/2024 5502251-0

reconditioned spare.

PRESSURIZER SAFETY RELIEF VALVE 1 3JRCEPSV0203 Replace the pressurizer relief valve with a 5/09/2024 5502252-0

reconditioned spare.

RC LOOP "1B" DRAIN VALVE TO RDT 1 3PRCEV235 RCE-L058 Spool N-00B will be removed from 5/10/2024 5618251-0 RCE-V235 and weld replaced with Vendor supplied materials.

RC LOOP "1B" DRAIN VALVE TO RDT 1 3PRCEV335 RCE-V335 will be removed and weld replaced 5/10/2024 5618251-0

with vendor supplied material.

1 Table 2 Abstract of 3R24 Repair/Replacement Activities Required for Continued Service

Code Component ID Description of Work Date Repair/Replacement Class Complete Plan Number STEAM GEN 1 RCEE01A DISCHDR TO REACT 1 3PRCEL058 DRAIN TK 5/10/2024 5618251-0 Replace RCE-L058 Spool N-00B with vendor supplied material.

S/G #2 LINE 2 SAFETY RELIEF VALVE

2 3JSGEPSV0558 Replacement of main steam safety valve with 5/10/2024 5502165-0 reconditioned and tested spare.

SNUBBER SUPPORT AT TOP OF AIR CYLINDER ON 3JSGAUV0175.

2 3SG203H014 PM for replacement of air cylinder. Existing 5/10/2024 5502596-1 snubber support bracket to be transferred to the replacement air cylinder.

SNUBBER SUPPORT AT TOP OF AIR CYLINDER ON 3JSGAUV0135.

2 3SG203H013 PM for replacement of air cylinder. Existing 5/10/2024 5502597-1 snubber support bracket to be transferred to the replacement air cylinder.

S/G #1 LINE 2 SAFETY RELIEF VALVE 2 3JSGEPSV0579 Replacement of main steam safety valve with 5/10/2024 5502165-0 reconditioned and tested spare.

SIT "1A" PRESSURE RELIEF VALVE 2 3JSIEPSV0231 5/08/2024 5502802-0 Remove and test PSV, rework if required.

SIT 1B To Safety Valve 3JSIEPSV0241 2 3PSIEL230 Modify SIE-L230 Spool N-00B per DEC 22-5/08/2024 5598241-0 07965-018 and EDC 2024-00129 using vendor supplied materials.

STEAM GEN 2 MAIN STEAM LN1 CONSTANT 2 3SG042H011 SPRING HANGER 5/10/2024 5615569-0 Replace failed constant spring support.

SNUBBER HPSI PMP DISCHGTRAIN B AND RWT 2 3SI107H012 Replace snubber for cause. Torque carrier and 2/20/2024 5510445-0 shaft assembly are bent. Snubber passed ST requirements.

AIR AFTERCORS HT EXCH TOSPRAY POND 3 3PSPAL101 TRAIN A S-001 3/05/2023 5392007-3 Base metal repair of pipe spool.

3 3MDGAE01A EDG INTERCOOLER A 3/05/2023 5392011-0 Weld repair of corroded areas

3 3MDGAE01B EDG INTERCOOLER B 3/05/2023 5392011-0 Weld repair of corroded areas EDG INTERCOOLER CROSS CONNECT SPOOLS 3 3MDGAE01A (5, 6, 7, and 8) 3/05/2023 5392011-0 Weld repair of corroded areas

2 Table 2 Abstract of 3R24 Repair/Replacement Activities Required for Continued Service

Code Component ID Description of Work Date Repair/Replacement Class Complete Plan Number

3 3MDGAE05 EDG JACKET WATER COOLER 3/05/2023 5392011-0 Weld repair of corroded areas

3 3MDGAE04 EDG LUBE OIL COOLER 3/05/2023 5392011-0

Weld repair of corroded areas ESS SPRAY POND SPBP01 TOJACKET WATER 3 3PSPBL032A COOLER (Spools 14 and 15) 6/16/2023 5398442-4 Base Metal Repair of piping DG CLG WTR HT EXCH DGBE01 FROM SPRAY 3 3PSPBL049A POND TRAIN B (Spool 1) 6/16/2023 5398442-4 Base Metal Repair of Piping LUBE OIL CLR DGBE04 TOSPRAY POND TRAIN 3 3PSPBL106 B (Spools 1 and 4) 6/16/2023 5398442-4 Base Metal Repair of Piping 3 3MDGBE01A EDG INTERCOOLER A 6/16/2023 5398449-0 Weld repair of corroded areas 3 3MDGBE04 EDG LUBE OIL COOLER 6/16/2023 5398449-0 Weld repair of corroded areas

3 3MDGBE01B EDG INTERCOOLER B 6/16/2023 5398449-0 Weld repair of corroded areas 3 3MDGBE05 EDG JACKET WATER COOLER 6/16/2023 5398449-0 Weld repair of corroded areas

ECWS HTEXCH A 3 3MEWAE01 Perform base material repairs to the heat 4/24/2024 5502134-1 exchanger as directed by engineering weld inspection maps.

"B" D/G FUEL OIL STORAGE TANK 3 3MDFBT01 Fab and Install splice plate on cracked 6/16/2023 5542379-0 stiffener ring in Diesel Fuel Oil Tank

3