IR 05000528/2021012

Triennial Fire Protection Inspection Report 05000528/2021012, 05000529/2021012 and 05000530/2021012

ML21123A163
Person / Time
Site:	Palo Verde
Issue date:	05/04/2021
From:	Nick Taylor NRC Region 4
To:	Lacal M Arizona Public Service Co
References
IR 2021012
Download: ML21123A163 (12)

Text

May 4, 2021

SUBJECT:

PALO VERDE NUCLEAR GENERATING STATION - TRIENNIAL FIRE PROTECTION INSPECTION REPORT 05000528/2021012, 05000529/2021012 AND 05000530/2021012

Dear Ms. Lacal:

On April 16, 2021, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Palo Verde Nuclear Generating Station. The NRC inspectors discussed the results of this inspection with Mr. Todd Horton, Senior Vice President, Site Operations 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 (10 CFR) 2.390, Public Inspections, Exemptions, Requests for Withholding.

Sincerely, Nicholas Digitally signed by Nicholas H. Taylor H. Taylor Date: 2021.05.04 08:11:57 -05'00'

Nicholas H. Taylor, Chief Engineering Branch 2 Division of Reactor Safety Docket Nos. 05000528, 05000529 and 05000530 License Nos. NPF-41, NPF-51 and NPF-74

Enclosure:

As stated

Inspection Report

Docket Numbers: 05000528, 05000529 and 05000530 License Numbers: NPF-41, NPF-51 and NPF-74 Report Numbers: 05000528/2021012, 05000529/2021012 and 05000530/2021012 Enterprise Identifier: I-2021-012-0000 Licensee: Arizona Public Service Company Facility: Palo Verde Nuclear Generating Station Location: Tonopah, AZ Inspection Dates: March 29, 2021, to April 16, 2021 Inspectors: G. Pick, Senior Reactor Inspector S. Makor, Reactor Inspector J. Mateychick, Senior Reactor Inspector Approved By: Nicholas H. Taylor, Chief Engineering Branch 2 Division of Reactor Safety Enclosure

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a triennial fire protection 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 in effect at the beginning of the inspection unless otherwise noted. Currently approved inspection procedures 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.

Starting on March 20, 2020, in response to the National Emergency declared by the President of the United States on the public health risks of the coronavirus (COVID-19), resident and regional inspectors were directed to begin telework and to remotely access licensee information using available technology. During this time, resident and regional baseline inspections were evaluated to determine if all or portions of the objectives and requirements stated in the inspection procedure could be performed remotely. If the inspections could be performed remotely, they were conducted per the applicable inspection procedure. In some cases, portions of an inspection procedure were completed remotely and on site. The inspections documented below met the objectives and requirements for completion of the inspection procedure.

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 located in the fire hazards analysis or safe shutdown analysis.

(1) Verified that operator actions can be accomplished as assumed in the fire probabilistic risk assessment analysis and safe shutdown analysis.

(2) Walked down the fire water system components including the fire water tank and fire pumps to inspect for deficient conditions.

(3) Evaluated readiness of the carbon dioxide fire suppression system protecting the essential switchgear rooms (Fire Areas 5A and 5B) in Unit 2.

(4) Ensured that post maintenance and surveillance activities for the selected fire areas and fire water systems were performed as scheduled.

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 fire protection program contains adequate procedures to implement the selected administrative control.

Verify that the selected administrative control meets the requirements of all committed industry standards.

(1) Reviewed administrative controls of hot work, transient combustibles, and fire impairments.

(2) Ensured that the fire brigade training program met requirements and readiness of the licensee to combat fires.

Fire Protection Program Changes/Modifications (IP Section 03.03) (2 Samples)

The inspectors evaluated the licensee's procedures controlling modifications and procedure revisions for adequacy in reviewing potential impacts to the fire protection program.

(1) Reviewed fire protection configuration review requests associated with plant modifications.

(2) Reviewed fire protection change review requests associated with procedure changes.

INSPECTION RESULTS

No findings were identified.

EXIT MEETINGS AND DEBRIEFS

The inspectors verified no proprietary information was retained or documented in this report.

• On April 16, 2021, the inspectors presented the triennial fire protection inspection results to Mr. Todd Horton, Senior Vice President, Site Operations and other members of the licensee staff.

DOCUMENTS REVIEWED

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.21N.05 Calculations 13-MC-FP-0316 10 CFR 50, Appendix R, Manual Action Feasibility 12

13-MC-FP-0317 10 CFR 50, Appendix R, Operational Considerations 11

13-MC-FP-0318 10 CFR 50, Appendix R, III.G/III.L Compliance 13

Assessment

13-MC-FP-0320 10 CFR 50, Appendix R, Multiple Spurious Operations 0

Analysis

13-NS-F001 Fire Probabilistic Risk Assessment - Plant Boundary 1

Definition and Partitioning

13-NS-F002 Fire Probabilistic Risk Assessment - Equipment Selection 1

13-NS-F004 Fire Probabilistic Risk Assessment - Quantification and 1

Screenings

13-NS-F006 Fire Probabilistic Risk Assessment - Ignition Frequencies 1

Analysis

13-NS-F007 Fire Probabilistic Risk Assessment - Zone of Influence 1

(ZOI)

13-NS-F009 Fire Probabilistic Risk Assessment - Fire Scenario 1

Selection and Seismic-Fire Interactions (FSS/SF)

13-NS-F010 Fire Probabilistic Risk Assessment - Post-Fire Human 1

Reliability Analysis (HRA)

NN345-A00021 Evaluation of the Development and Timing of Hot Gas 0

Layer Conditions in Generic Palo Verde Fire

Compartments with Secondary Combustibles (0001-0014-

2-002, R1)

TA-13-C00-2000- CENTS Computer Code Analysis of the 10 CFR 50, 3

004 Appendix R, Fire Protection Scenarios

Corrective Action 19-05839, 19-09863, 19-09864, 19-09865, 19-09878

Documents

Corrective Action 21-03715, 21-03723, 21-03739, 21-03740, 21-04029

Documents

Resulting from

Inspection

Drawings Chemical Volume Control System Overview 04/2020

Inspection Type Designation Description or Title Revision or

Procedure Date

01-M-FPP-002, P & I Diagram - Fire Protection System 19

Sheet 1

01-M-FPP-003 P & I Diagram - Fire Protection System 23

01-M-FPP-006 P & I Diagram - Fire Protection System 16

2-M-AFP-001, P & I Diagram - Auxiliary Feedwater System 35

Sheet 1 of 2

2-M-AFP-001, P & I Diagram - Auxiliary Feedwater System 35

Sheet 2 of 2

2-M-EWP-001 P & I Diagram - Essential Cooling Water System 28

2-M-FPP-002, P & I Diagram - Fire Protection System 18

Sheet 1

2-M-FPP-003 P & I Diagram - Fire Protection System 18

2-M-FPP-004 P & I Diagram - Fire Protection System (CO2 System) 9

2-M-FPP-006 P & I Diagram - Fire Protection System 14

2-M-NCP-001 P & I Diagram - Nuclear Cooling Water System 17

2-M-NCP-002 P & I Diagram - Nuclear Cooling Water System 13

2-M-NCP-003 P & I Diagram - Nuclear Cooling Water System 13

2-M-SIP-001 P & I Diagram Safety Injection & Shutdown Cooling 55

System

2-W-HJP-001 P & I Diagram - Control Building Heating, Ventilation, and 21

Air Conditioning

03-M-FPP-002 P & I Diagram - Fire Protection System 15

03-M-FPP-003 P & I Diagram - Fire Protection System 19

03-M-FPP-006 P & I Diagram - Fire Protection System 16

13-A-ZYD-029, Fire Protection Control Building Floor Plan at Elevation 23

Sheet 2 100' - 0", Level 1

13-E-MAA-001 Main Single Line Diagram 31

AO-M-FPP-001 P & I Diagram - Fire Protection System 39

Engineering 07-00110-004 Strategic Modernization Program Ovation Distributed 1

Changes Control System Infrastructure and Cyber Security System

19-00424-002 The TCCP# 5048813 in U1 Fuel Building that's being use 01/29/19

for L-Insert Spent Fuel Pool (SFP) PC-1678 modification

(DMWO 4887256)

Inspection Type Designation Description or Title Revision or

Procedure Date

20-00424 13-MC-FP-0803 16

EDC 2019-00674 Fire Protection Change Regulatory Review 4

Engineering 18-10070-003 EWR to Further Evaluate Penetration Seal 07/24/18

Evaluations 20-07630-003 Review Technical Issue Notifications for the Fire 06/09/2020

Protection EST3 and Fireworks System

20-14739-001 NRC Information Notice (IN) 2020-03, Recall of 11/10/2020

Mechanical Rate of Rise and Fixed Temperature Heat

Detectors

20-16734-001 NRC Information Notice (IN) 2020-04, Operating 12/28/2020

Experience Related to Failure of Buried Fire Protection

Main Yard Piping

EE 17-15769-001 Fire Protection Change Regulatory Review (FPCRR) 1

EE 18-08959-002 Fire Protection Change Regulatory Review (FPCRR) 2

EE 19-01360-056 Fire Protection Change Regulatory Review (FPCRR) 5

Miscellaneous Fire Protection Design Basis Manual 15

List of Modifications Associated with Fire Protection

Licensing Alternatives for Resolution of Operator Manual 05/12/2012

Actions (OMAs) for Multiple Spurious Operations (MSOs)

Top 10 risk significant systems from the Fire Probabilistic 01/21/2021

Risk Assessment based on contribution to core damage

frequency and on contribution to large early release

frequency

Description of fire modeling key inputs and associated

studies related to essential switchgear room Train A and

the turbine-driven auxiliary feedwater pump

24831 CAFTA - Fault Tree Analysis System, Version 6.0 12/2021

13-LS-A112 PVNGS Aging Management Program Evaluation Report - 0

Fire Protection-B.2.1.12, NUGEG 1801 Program XI.M26

13-LS-A113 PVNGS Aging Management Program Evaluation Report- 0

Fire Water System-B2.1.13, NUREG 1801 Program

XI.M27

13-LS-A116 PVNGS Aging Management Program Evaluation Report- 2

One Time Inspection -B2.1.16, NUREG 1801 Program

XI.M32

Inspection Type Designation Description or Title Revision or

Procedure Date

13-LS-A117 PVNGS Aging Management Program Evaluation Report- 1

Selective Leaching of Materials-B2.1.17, NUREG

Program XI.M33

13-LS-A118 PVNGS Aging Management Program Evaluation Report- 0

Buried Piping and Tanks Inspection-B2.1.18, NUREG 1801 Program XI.M34

13-MS-A83 NFPA Code Applicability and Conformance Review 9

3002010659 FRANX Software Manual, Version 4.4 07/2017

NLR20S010402 Licensed Operator Continuing Training Simulator 01/16/2020

Scenario

NLR21S020400 Licensed Operator Continuing Training Simulator 02/23/2021

Scenario

NNR20C050600 Non-Licensed Operator Continuing Training Simulator 08/12/2020

Scenario

NUREG/CR- EPRI/NRC-RES Fire PRA Methodology for Nuclear Power 09/2005

6850, v1 Facilities, Volume 1: Summary & Overview

NUREG/CR- EPRI/NRC-RES Fire PRA Methodology for Nuclear Power 09/2005

6850, v2 Facilities, Volume 2: Detailed Methodology

PR-0904 Fire Protection Program Requirement Description 2

Supplement 1 to Fire Probabilistic Risk Assessment Methods 12/2009

NUREG/CR-6850 Enhancements

Technical Fire Protection 62

Requirements

Manual Section

T3.11

Procedures 14DP-0FP01 Firewatch Requirements 14

14DP-0FP01 Firewatch Requirements 14

14DP-0FP02 Fire System Impairments and Notifications 26

14DP-0FP02 Fire Systems Impairments and Notifications 26

14DP-0FP13 Fire Protection System Status Control 14

14DP-0FP33 Control of Transient Combustibles 31

14DP-0FP36 Hot Work Permit 24

14DP-0FP43 Fire Protection Program Responsibilities, Authorities, and 2

Management Expectations

Inspection Type Designation Description or Title Revision or

Procedure Date

14DP-0FP44 Fire Protection Test Program Requirement 5

14DP-0FP46 Fire Protection Impact Screening 2

14DP-0TR01 Fire Department Training Program Description 22

14DP-0TR02 Fire Department Training Program Administration 30

14FT-0FP04 Annual Fire Water Loop Test 25

14FT-0FP05 Monthly Diesel Driven Fire Pump Start and Run 25

14FT-0FP34 Fire Hydrant Street Key Flush & Post Indicator Valve 2

Operational Testing Water Reclamation Facility

14FT-1FP02 Motor Driven Fire Pump Start and Run 14

14FT-2FP03 Fire Water Valve Verification 17

14FT-2FP04 Fire Protection Valve Cycling 16

14FT-2FP05 Unit 2 Wet Pipe, Deluge and Pre-Action System 3

Inspection

14FT-2FP34 Fire Hydrant Street Key Flush & Post Indicator Valve 2

Operational Testing Unit 2

14FT-9FP04 Annual Fire Pump Test 19

14FT-9FP08 CO2 Fire Suppression System Functional Test 19 & 21

14FT-9FP28 FPN-Spray and/or Sprinkler System Functional Test 24

14FT-9FP29 CO2 Fire Suppression System Valve and Test Switch 10

Position Verification

14FT-9FP65 Appendix R/FTS Fire Barrier Surveillance (for Walls, 14

Floors/Ceilings and Raceways)

1DP-0FP38 Fire Protection Test Program 17

2DP-0AC03 Digital Assessments 5

33FT-9FP01 Appendix R and Technical Requirements Manual Fire 11

Damper Surveillance

38FT-9QK14 Fire Detection/Protection System Supervised Circuits Test 14

and Functional Test - Carbon Dioxide Panels

3FT-9FP04 Appendix A Fire Damper Surveillance Test 11

40AO-9ZZ19 Control Room Fire 42

40DP--9ZZ04 Time Critical Action (TCA) Program 16

40DP-9ZZ17 Control of Doors, Hatches and Floor Plugs 65

73DP-9EE05 One-Time Inspection Program 2

Inspection Type Designation Description or Title Revision or

Procedure Date

73DP-9EE06 One-Time Inspection for Selective Leaching Degradation 3

of Components

73DP-9EE07 Internal Surfaces Inspection 1

81DP-0DC17 Temporary Configuration Changes 45

81DP-0EE02 Design Change Request 16

81DP-0EE10 Design Change Process 49

81DP-0ZZ01 Civil System, Structure, and Component Monitoring 25

Program

83DP-0AP01 Buried Piping and Tanks Program 9

IP-ENG-001 Standard Design Process Overview 2

PR-0904 Program Requirement Description - Fire Protection 2

STP M-65 Sprinkler/Deluge System Visual Verifications 22

Work Orders 2765970, 4443275, 4580980, 4946829, 4946860,

4973747, 4973749, 4981416, 5007899, 5007900,

5030240, 5048552, 5065781, 5071664, 5072404,

5073224, 5074929, 5091039, 5152582, 5156565,

5164350, 5164555, 5167697, 5169459, 5173126,

5178911, 5179302, 5180651, 5182685, 5183112,

5189568, 5264169, 5317536, 5319595

10