IR 05000528/2025011
| ML25058A129 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 03/04/2025 |
| From: | Greg Warnick NRC/RGN-IV/DORS/EB2 |
| To: | Heflin A Arizona Public Service Co |
| References | |
| IR 2025011 | |
| Download: ML25058A129 (1) | |
Text
March 04, 2025
SUBJECT:
PALO VERDE NUCLEAR GENERATING STATION - FIRE PROTECTION TEAM INSPECTION REPORT 05000528/2025011 AND 05000529/2025011 AND 05000530/2025011
Dear Adam C. Heflin:
On February 13, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Palo Verde Nuclear Generating Station and discussed the results of this inspection with Katherine Gil, Director, Nuclear Regulatory Affairs and other members of your staff. The results of this inspection are documented in the enclosed report.
No findings or violations of more than minor significance were identified during this inspection.
This letter, its enclosure, and your response (if any) will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in accordance with Title 10 of the Code of Federal Regulations 2.390, Public Inspections, Exemptions, Requests for Withholding.
Sincerely, Gregory G. Warnick, Chief Engineering Branch 2 Division of Operating Reactor Safety Docket Nos. 05000528; 05000529; 05000530 License Nos. NPF-41; NPF-51; NPF-74
Enclosure:
As stated
Inspection Report
Docket Numbers:
05000528; 05000529; 05000530
License Numbers:
Report Numbers:
05000528/2025011; 05000529/2025011; 05000530/2025011
Enterprise Identifier:
I-2025-011-0002
Licensee:
Arizona Public Service
Facility:
Palo Verde Nuclear Generating Station
Location:
Tonopah, AZ
Inspection Dates:
January 27 to February 13, 2025
Inspectors:
S. Makor, Senior Reactor Inspector
N. Okonkwo, Reactor Inspector
G. Pick, Senior Reactor Inspector
Approved By:
Gregory G. Warnick, Chief
Engineering Branch 2
Division of Operating Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a fire protection team inspection at Palo Verde Nuclear Generating Station, in accordance with the Reactor Oversight Process. The Reactor Oversight Process is the NRCs program for overseeing the safe operation of commercial nuclear power reactors.
Refer to https://www.nrc.gov/reactors/operating/oversight.html for more information.
List of Findings and Violations
No findings or violations of more than minor significance were identified.
Additional Tracking Items
None.
INSPECTION SCOPES
Inspections were conducted using the appropriate portions of the inspection procedures (IPs) in effect at the beginning of the inspection unless otherwise noted. Currently approved IPs with their attached revision histories are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. Samples were declared complete when the IP requirements most appropriate to the inspection activity were met consistent with Inspection Manual Chapter (IMC) 2515, Light-Water Reactor Inspection Program - Operations Phase. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.
REACTOR SAFETY
71111.21N.05 - Fire Protection Team Inspection (FPTI) Structures, Systems, and Components (SSCs) Credited for Fire Prevention, Detection, Suppression, or Post-Fire Safe Shutdown Review (IP Section 03.01)
The inspectors verified that components and/or systems will function as required to support the credited functions stated for each sample. Additional inspection considerations are in the fire hazards analysis (FHA) or safe shutdown analysis (SSA).
(1)switchgear and battery rooms (zone TB-4), turbine building, elevation 100
- (2) DC equipment room - train A, channel A (zone 7A) control building, elevation 100 (3)auxiliary feedwater system, zone 72 & TB-3 (4)gaseous fire extinguishing systems, computer room (zone 16), control building, elevation 140
Fire Protection Program Administrative Controls (IP Section 03.02) (2 Samples)
The inspectors verified that the selected control or process is implemented in accordance with the licensees current licensing basis. If applicable, ensure that the licensees fire protection program (FPP) contains adequate procedures to implement the selected administrative control. Verify that the selected administrative control meets the requirements of all committed industry standards.
(1)review fire protection training program (2)review fire protection operating experience program
Fire Protection Program Changes/Modifications (IP Section 03.03) (3 Samples)
The inspectors verified the following:
a. Changes to the approved FPP do not constitute an adverse effect on the ability to safely shutdown.
b. The adequacy of the design modification, if applicable.
c. Assumptions and performance capability stated in the SSA have not been degraded through changes or modifications.
d. The FPP documents, such as the updated final safety analysis report, fire protection report, FHA, and SSA were updated consistent with the FPP or design change.
e. Post-fire safe shutdown (SSD) operating procedures, such as abnormal operating procedures, affected by the modification were updated.
- (1) Engineering Change DEC-16-15266- 004, "Pressurizer Spray Valve"
- (2) Engineering Change DEC-17-04380- 004, "Fire Protection Drain Line Modification"
- (3) Engineering Change DEC-00410, "RCP Motor Replacement"
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On February 13, 2025, the inspectors presented the fire protection team inspection results to Katherine Gil, Director, Nuclear Regulatory Affairs and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
13-EC-PK-0204
Hydrogen Generation Calculation for Class IE Station
Batteries - GNB model NCN-33
13-MC-FP-0803
Combustible Loading Calculation for Control Building
13-MC-FP-821
Halon-1301 Fire Protection System for Remote Shutdown
Rooms - Train A and Train B
13-MC-ZA-0808
Calc for MSSS Flooding at Elevation 81'
Calculations
13-MC-ZJ-0200
AS Built Control Building Flooding Calculation
Corrective Action
Documents
CR
16-00686, 21-11895, 21-11896, 22-01219, 22-07832,
2-08881, 22-10502, 22-13140, 23-00426, 23-10757,
24-03262, 24-05075, 24-05273, 24-13271, 23-06635,
21-08588, 18-12590, 23-04338
Corrective Action
Documents
Resulting from
Inspection
CR
25-00937, 25-00981, 25-00982, 25-00983, 25-00984,
25-00986, 25-01000, 25-01079, 25-01081,
Markups for flow through buildings and around the
underground loop
01-M-FPP-002,
sheet 1
Fire Protection System
01-M-FPP-003
Fire Protection System
01-M-FPP-004
Fire Protection System (CO2 System)
01-M-FPP-006
Fire Protection System
01-M-RCP-003
Reactor Coolant System Lube Oil Collection System
13-A-ZYD-022
Fire Protection Containment Bldg. Floor Plan at EL 55-0
13-A-ZYD-027
Fire Protection Turbine Building Floor Plan at Elevation
100-0 Level0
13-A-ZYD-029
Fire Protection Control Building Floor Plan at Elevation
100'-0", Level 1, sheet 2
13-A-ZYD-029
Fire Protection Control Building Floor Plan at Elevation
20'-0", Level 2, sheet 3
71111.21N.05
Drawings
13-A-ZYD-029
Fire Protection Control Building Floor Plan at Elevation
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
140'-0", Level 3, sheet 4
13-A-ZYD-029
Fire Protection Control Building Floor Plan at Elevation
140'-0", Level 4, sheet 5
13-C-ZVA-011
Fire Protection System General Arrangement
A-E-NGB-004
Elementary Diagram 480V Non-Class 1E Power System,
Load Center A-E-NGN-L41 & L42, 480 V Main Feeder
Breakers
A-E-NGF-004,
Sh. 2
Control Wiring Diagram 480V Non-Class 1E Power
System, Load Center A-E-NGN-L41, 480 V Main Feeder
Breakers
A0-E-NGA-001
Single Line 480 V Non-Class IE power system load
Center AE-NGN-L41
A0-E-NGA-009
Single Line 480 V Non-Class IE power system load
Center AE-NGN-L49
A0-E-NHA-003
Single Line Diagram 480V Non-Class 1E Power System,
Motor Control Center AE-NHN-M53
E017 00251
LC41 Connection Diagram Transformer Windings
E017 00251
Connection Diagram for Winding Temp. Indicator Type LC
Transformer
M650-00647
Main Steam Support Structure Feed Water Pre-Action
Sprinkler Piping
M652-00059
Detector Wiring Diagram
DEC 16-15266
Spray Valve Positioner Replacement with Digital DVCs
DEC 17-04380-
004
FP Permanent Drain Line Modification
Engineering
Changes
DEC-00410
RCP Motor Replacement and Enhancement Equivalency
19-10825-002
Justify Use of Temperature Indication to Identify Liquid
Level in Halon Bottles
8/15/2019
Engineering
Evaluations
2-03027-002
Fire Hose Evaluation
5/4/2022
Encasement on Ends of Battery Packs
N/A
Battery Room D Detection Key-Legend
N/A
No Hydrogen Monitoring - Battery Rooms
N/A
Pre-fire strategies
Miscellaneous
No Hydrogen Monitoring - Battery Rooms Response
N/A
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
13-MM-658
Specification for Fire Protection Halon 1301 System
13-NS-C088
Mission Times Operability determinations for the EW, SP,
23-10855-001
Level 4 Evaluation Operating Experience (OE) 559337
(Watts Bar 2 - Missing Fire Barrier)
24-02030-001
Operating Experience Related to Fire Events at
Decommissioning Nuclear Power Plants in the United
States
3/5/2024
24-03262-001
Stars Regulatory OE: Wolf Creek Greek NCV: Failure to
Maintain Fire Protection Compensatory Measures During
Control Room Ventilation Isolation Signal Actuation
4/5/2024
24-03264-001
STARS Regulatory OE: Callaway Green NCV: Failure to
Maintain Fire Door Closed or Implement Fire Watch
4/5/2024
24-08440-001
STARS Regulatory OE: Wolf Creek NCV: Failure to
Maintain Surveillance Testing Procedure in Accordance
with the Fire Protection Program
8/14/2024
24-11314-001
Level 4 Business Review Evaluation
10/21/2024
50.59 Screening
95-00197
Revise FP Halon System surveillance procedure 14FT-
6/22/1996
Fire Protection - Design Basis Manual
FPCRR
DEC 18-13957-003 R4 and EDC 2023-00452 (ZT-1749
Online Condition Monitoring Equipment Installation, Units
1, 2, and 3)
9/10/2024
FPCRR
EE 21-13516-003 and PCP 5564384
10/18/2023
FPCRR
TAPA for 14FT-0FP04, Annual Fire Water Loop Test, Rev
26a
7/5/2023
FPCRR
EC 22-13057-002 R0 (including FCR-APS-2024-0773)
and EDC 2024-00037 (SMP Phase 3)
2/13/2024
FPD01-00-001
Initial Fire Team Member Qual Card
11/1/2018
MA Q2-2024 (2-1-
24_7-31-24)
System Health Report (SHR) MA System for 2025 FP TRI
annual Inspection
1/16/2025
NA Q2-2024 (2-1-
24_7-31-24)
System Health Report (SHR) NA System for 2025 FP TRI
annual Inspection
1/16/2025
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
NKASMC071210
Licensed Operator Initial Training Classroom Lesson
2/24/2020
NPL66-L-0031-24
Palo Verde Nuclear Generating Station Fire Department
24 1st Quarter Training
1/26/2024
NPL67-L-0030-23
Palo Verde Generating Station Fire Department 2024 2nd
Quarter Training
5/8/2024
SDOC M660-
00084
Electric Motor Data A-M-FPP03 N-for Jockey Pump Motor
2/2/1993
VTD-E930-00006
Vendor Manual for Z-lights Vendor Manual for Phillips
Light Guard Vectra Series Emergency Light
4/26/2021
Condition Reporting Process
Condition Reporting Process Administrative Guideline
13-A-ZYD-0022
Fire Protection Containment Bldg. Floor Plan at EL 55-0
13-MS-A83
NFPA Code Applicability and Conformance Review
Fire Protection Test Program
Fire Protection Program Impact Screening
Fire Department Training Program Description
Fire Department Training Program Administration
Annual Fire Water Loop Test
Monthly Diesel Driven Fire Pump Start and Run
CO2 Fire Suppression System Functional Test
Halon Cylinder Liquid Level and Pressure (License and
Non-license Commitment)
Halon Fire Suppression System Functional Test
Halon System Inspection
Fire Suppression Water System Flow Test
Inspection/Cleaning of 1E and Non-1E 480 Volt Load
Appendix R and Technical Requirements Manual Fire
Damper Surveillance
Procedures
Appendix A Fire Damper Surveillance Test
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Infrared Thermography Inspection of Plant Components
Infrared Thermography Inspection of Plant component
Control Room Fire
Operations Interface
Engineering Work Orders and Evaluations
Classification of Structures, Systems, and Components
Control of Engineering Data in SWMS
Item Equivalency Evaluation (IEE)
NISP-EN-02
Standard Item Equivalency Process (EO-18-EG-01)
NNI01C073704
Non-Licensed Operator Initial Training
7/26/2024
Work Orders
5336792-0, 5375830-0, 5456727-0, 5540778-0,
5569443-0, 5569444-0, 4782660, 2803240, 5395840,
5395838, 5430733, 5459108, 5562435, 2555776