IR 05000528/2022003

Units, 1, 2 and 3 Integrated Inspection Report 05000528/2022003, 05000529/2022003, and 05000530/2022003

ML22293A290
Person / Time
Site:	Palo Verde
Issue date:	10/24/2022
From:	John Dixon NRC/RGN-IV/DORS/PBD
To:	Heflin A Arizona Public Service Co
Sanchez A
References
IR 2022003
Download: ML22293A290 (26)

Text

October 24, 2022

SUBJECT:

PALO VERDE NUCLEAR GENERATING STATION - INTEGRATED INSPECTION REPORT 05000528/2022003 AND 05000529/2022003 AND 05000530/2022003

Dear Mr. Heflin:

On September 30, 2022, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Palo Verde Nuclear Generating Station. On October 7, 2022, the NRC inspectors discussed the results of this inspection with Mr. T. Horton, Senior Vice President, and other members of your staff. The results of this inspection are documented in the enclosed report.

One finding of very low safety significance (Green) is documented in this report. This finding involved a violation of NRC requirements. We are treating this violation as a non-cited violation (NCV) consistent with Section 2.3.2 of the Enforcement Policy.

If you contest the violation or the significance or severity of the violation documented in this inspection report, you should provide a response within 30 days of the date of this inspection report, with the basis for your denial, to the U.S. Nuclear Regulatory Commission, ATTN:

Document Control Desk, Washington, DC 20555-0001; with copies to the Regional Administrator, Region IV; the Director, Office of Enforcement; and the NRC Resident Inspector at Palo Verde Nuclear Generating Station.

If you disagree with a cross-cutting aspect assignment in this report, you should provide a response within 30 days of the date of this inspection report, with the basis for your disagreement, to the U.S. Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555-0001; with copies to the Regional Administrator, Region IV; and the NRC Resident Inspector at Palo Verde Nuclear Generating Station. 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, Signed by Dixon, John on 10/24/22 John L. Dixon, Jr., Chief Projects Branch D Division of Operating 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: 05000528/2022003, 05000529/2022003 and 05000530/2022003 Enterprise Identifier: I-2022-003-0006 Licensee: Arizona Public Service Facility: Palo Verde Nuclear Generating Station Location: Tonopah, AZ Inspection Dates: July 1 to September 30, 2022 Inspectors: L. Merker, Senior Resident Inspector N. Cuevas, Resident Inspector E. Lantz, Resident Inspector Approved By: John L. Dixon, Jr., Chief Projects Branch D Division of Operating Reactor Safety Enclosure

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated 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

Failure to Follow Procedures Results in Partial Loss of Offsite Power Cornerstone Significance Cross-Cutting Report Aspect Section Initiating Events Green [H.12] - Avoid 71153 NCV 05000528/2022003-01, Complacency 05000529/2022003-01, and 05000530/2022003-01 Open/Closed The inspectors reviewed a self-revealed, Green, non-cited violation of technical specification 5.4.1.a, Regulatory Guide 1.33, Revision 2, appendix A, section 9.a, for the licensees failure to ensure that maintenance that could affect the performance of safety-related equipment was properly preplanned and performed in accordance with written procedures, documented instructions, or drawings appropriate to the circumstances. Specifically, the licensees failure to follow procedures during the work planning and clearance processes resulted in an unintended personnel contact event with an energized portion of the Unit 2, 13.8 kV intermediate bus causing a partial loss of offsite power to Units 1 and 3. The partial loss of offsite power to Units 1 and 3 resulted in the valid actuation and loading of the Unit 1 emergency diesel generator B and Unit 3 emergency diesel generator A.

Additional Tracking Items

Type Issue Number Title Report Section Status LER 05000528, LER 2021-001-00 for Palo 71153 Closed 05000530/2021-001-00 Verde Nuclear Generating Station, Unit 1 and Unit 3 Emergency Diesel Generator Actuation on Loss of Offsite Power to Class 4.16 kV Buses LER 05000528, LER 2021-001-01 for Palo 71153 Closed 05000530/2021-001-01 Verde Nuclear Generating Station, Unit 1 and Unit 3 Emergency Diesel Generator Actuation on Loss of Offsite Power to Class 4.16 kV Buses LER 05000530/2021-001-01 LER 2021-001-01 for Palo 71153 Closed Verde Nuclear Generating Station (PVNGS) Unit 3,

Reactor Trip During Control

Element Assembly Alignment Activities LER 05000530/2021-001-00 LER 2021-001-00 for Palo 71153 Closed Verde Nuclear Generating Station (PVNGS) Unit 3,

Reactor Trip During Control Element Assembly Alignment Activities

PLANT STATUS

Units 1, 2, and 3 operated at or near full power for the duration of the inspection period.

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 performed activities described in IMC 2515, Appendix D, Plant Status, observed risk significant activities, and completed on-site portions of IPs. 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.

71111.01 - Adverse Weather Protection

Impending Severe Weather Sample (IP Section 03.02) (1 Sample)

(1) The inspectors evaluated readiness for impending adverse weather conditions for monsoon thunderstorms, on July 14, 2022.

External Flooding Sample (IP Section 03.03) (1 Sample)

(1) The inspectors evaluated that flood protection barriers, mitigation plans, procedures, and equipment are consistent with the licensees design requirements and risk analysis assumptions for coping with external flooding on September 28, 2022.

71111.04 - Equipment Alignment

Partial Walkdown Sample (IP Section 03.01) (3 Samples)

The inspectors evaluated system configurations during partial walkdowns of the following systems/trains:

(1) Unit 1, high-pressure safety injection train B after emergent maintenance on safety injection train A, on July 8, 2022

(2) Unit 1, low-pressure safety injection train A during summer reliability window, on September 13, 2022

(3) Unit 1, auxiliary feedwater train A during summer reliability window, on September 14, 2022

71111.05 - Fire Protection

Fire Area Walkdown and Inspection Sample (IP Section 03.01) (4 Samples)

The inspectors evaluated the implementation of the fire protection program by conducting a walkdown and performing a review to verify program compliance, equipment functionality, material condition, and operational readiness of the following fire areas:

(1) Unit 2, upper cable spreading room, fire zone 20, on July 15, 2022

(2) Unit 1, class 1E 4kV switchgear A, fire zone 5A, on August 5, 2022

(3) Unit 2, lower cable spreading room, fire zones 11A, 11B, 12, 13, and 14, on September 7, 2022

(4) Unit 1, emergency diesel generator B and emergency diesel generator B control rooms, fire zones 21B and 22B, on September 26, 2022

71111.11Q - Licensed Operator Requalification Program and Licensed Operator Performance

Licensed Operator Performance in the Actual Plant/Main Control Room (IP Section 03.01)

(1 Sample)

(1) The inspectors observed and evaluated licensed operator performance in the main control room during Units 1 and 3 alignment of electrical buses to the alternate offsite power sources following the loss startup transformer AE-NAN-X02, on August 15, 2022.

Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)

(1) The inspectors observed and evaluated licensed operator requalification simulator exam activities, on August 31, 2022.

71111.12 - Maintenance Effectiveness

Maintenance Effectiveness (IP Section 03.01) (2 Samples)

The inspectors evaluated the effectiveness of maintenance to ensure the following structures, systems, and components (SSCs) remain capable of performing their intended function:

(1) Units 1, 2, and 3, review of the 10 CFR 50.65(a)(3) periodic evaluation, on September 26, 2022

(2) Unit 3, plant protection system channel A, on September 29, 2022

Quality Control (IP Section 03.02) (2 Samples)

The inspectors evaluated the effectiveness of maintenance and quality control activities to ensure the following SSC remains capable of performing its intended function:

(1) Units 1, 2, and 3, metal bellows pump and motor assembly for the radiation monitoring system, on August 26, 2022

(2) Units 1, 2, and 3, relief valve for the essential chillers, on August 26, 2022

71111.13 - Maintenance Risk Assessments and Emergent Work Control

Risk Assessment and Management Sample (IP Section 03.01) (3 Samples)

The inspectors evaluated the accuracy and completeness of risk assessments for the following planned and emergent work activities to ensure configuration changes and appropriate work controls were addressed:

(1) Unit 3, high risk for emergent work to retorque packing on safety injection tank 1B nitrogen supply valves SIA-HV-649 and SIB-HV-642 and perform weld repairs on safety injection tank 1B pressure relief piping, on August 1, 2022

(2) Unit 1, emergent work on train A safety injection pumps' combined recirculation to refueling water tank valve SIA-UV-660, on August 8, 2022

(3) Unit 3, high risk for emergent work on balance of plant engineered safety features actuation system load sequencer train B, on September 26, 2022

71111.15 - Operability Determinations and Functionality Assessments

Operability Determination or Functionality Assessment (IP Section 03.01) (5 Samples)

The inspectors evaluated the licensee's justifications and actions associated with the following operability determinations and functionality assessments:

(1) Unit 3, pressurizer spray control valves RCE-PV-100E and RCE-PV-100F functionality assessment due to unexpected pressure decrease after boron equalization, on August 3, 2022

(2) Unit 2, emergency diesel generators A and B operability determination due to a fuel oil line modification discrepancy with design drawings, on August 16, 2022

(3) Units 1, 2, and 3, pressurized auxiliary spray control valves CHB-HV-203 and CHA-HV-205 functionality assessment due to previously observed leakage, on September 6, 2022

(4) Unit 1, atmospheric dump valve SGB-HV-178 accumulator nitrogen pressure reducing valve SGE-PCV-303 operability determination due to outlet pressure exceeding the maximum pressure specification, on September 7, 2022

(5) Unit 3, balance of plant-engineered safety features actuation system train B load sequencer module operability determination due to a failed auto test, on September 29, 2022

71111.18 - Plant Modifications

Severe Accident Management Guidelines (SAMG) Update (IP Section 03.03) (1 Sample)

(1) The inspectors verified the site severe accident management guidelines were updated in accordance with the PWR generic severe accident technical guidelines and validated in accordance with NEI 14-01, Emergency Response Procedures and Guidelines for Beyond Design Basis Events and Severe Accidents, revision 1.

71111.19 - Post-Maintenance Testing

Post-Maintenance Test Sample (IP Section 03.01) (2 Samples)

The inspectors evaluated the following post-maintenance testing activities to verify system operability and/or functionality:

(1) Unit 2, charging pump A testing following biennial maintenance, on July 14, 2022

(2) Unit 3, emergency diesel generator train A testing following speed regulating governor replacement, on September 6, 2022

71111.22 - Surveillance Testing

The inspectors evaluated the following surveillance testing activities to verify system operability and/or functionality:

Surveillance Tests (other) (IP Section 03.01) (3 Samples)

(1) Unit 3, class 1E 125 Vdc battery charger A testing, on July 19, 2022

(2) Unit 2, containment spray pump A inservice testing, on September 12, 2022

(3) Units 1, 2, and 3, pressurizer backup heater capacity surveillance testing, on

September 27, 2022 Inservice Testing (IP Section 03.01) (1 Sample)

(1) Unit 2, turbine-driven auxiliary feedwater pump inservice testing, on

September 12, 2022 RCS Leakage Detection Testing (IP Section 03.01) (2 Samples)

(1) Unit 3, manual calculation of reactor coolant system water inventory balance during adverse trend, on August 3, 2022

(2) Unit 2, reactor coolant system water inventory balance missed surveillance, on

September 29, 2022 FLEX Testing (IP Section 03.02) (1 Sample)

(1) Units 1, 2, and 3, and N+1 diverse and flexible coping strategies spent fuel pool makeup pump testing, on August 31, 2022

71114.06 - Drill Evaluation

Drill/Training Evolution Observation (IP Section 03.02) (1 Sample)

(1) The inspectors evaluated an emergency preparedness drill on August 9,

OTHER ACTIVITIES - BASELINE

===71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:

MS06: Emergency AC Power Systems (IP Section 02.05) ===

(1) Unit 1 (July 1, 2021, through June 30, 2022)

(2) Unit 2 (July 1, 2021, through June 30, 2022)

(3) Unit 3 (July 1, 2021, through June 30, 2022)

MS07: High Pressure Injection Systems (IP Section 02.06) (3 Samples)

(1) Unit 1 (July 1, 2021, through June 30, 2022)

(2) Unit 2 (July 1, 2021, through June 30, 2022)

(3) Unit 3 (July 1, 2021, through June 30, 2022)

MS08: Heat Removal Systems (IP Section 02.07) (3 Samples)

(1) Unit 1 (July 1, 2021, through June 30, 2022)

(2) Unit 2 (July 1, 2021, through June 30, 2022)

(3) Unit 3 (July 1, 2021, through June 30, 2022)

MS09: Residual Heat Removal Systems (IP Section 02.08) (3 Samples)

(1) Unit 1 (July 1, 2021, through June 30, 2022)

(2) Unit 2 (July 1, 2021, through June 30, 2022)

(3) Unit 3 (July 1, 2021, through June 30, 2022)

MS10: Cooling Water Support Systems (IP Section 02.09) (3 Samples)

(1) Unit 1 (July 1, 2021, through June 30, 2022)

(2) Unit 2 (July 1, 2021, through June 30, 2022)

(3) Unit 3 (July 1, 2021, through June 30, 2022)

71152A - Annual Follow-up Problem Identification and Resolution Annual Follow-up of Selected Issues (Section 03.03)

The inspectors reviewed the licensees implementation of its corrective action program related to the following issues:

(1) Units 1, 2, and 3, effectiveness of corrective actions related to potential auxiliary feedwater system discharge piping voiding, on August 26, 2022

(2) Units 1, 2, and 3, effectiveness of corrective actions related to control element drive mechanism control system component failures, on September 9, 2022

71153 - Follow Up of Events and Notices of Enforcement Discretion Event Report (IP Section 03.02)

The inspectors evaluated the following licensee event reports (LERs):

(1) LER 05000528, 05000530/2021-001-00 and LER 05000528, 05000530/2021-001-01, Unit 1 and Unit 3 Emergency Diesel Generator Actuation on Loss of Offsite Power to Class 4.16 kV Buses Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML21349B373 and ML22154A554. The inspectors reviewed the original and updated LER submittals and determined that the cause of the condition described in the LER was reasonably within the licensees ability to foresee and correct and therefore was reasonably preventable. A performance deficiency and violation of NRC requirements was identified and is described in the inspection results section of this report.

(2) LER 05000530/2021-001-00 and LER 05000530/2021-001-01, Unit 3, Reactor Trip During Control Element Assembly Alignment Activities (ML22034A997 and ML22195A281). The inspectors reviewed the original and updated LER submittals and determined that the cause of the condition described in the LER was not reasonably within the licensees ability to foresee and correct and therefore was not reasonably preventable. No performance deficiency nor violation of NRC requirements was identified.

INSPECTION RESULTS

Failure to Follow Procedures Results in Partial Loss of Offsite Power Cornerstone Significance Cross-Cutting Report Aspect Section Initiating Events Green [H.12] - Avoid 71153 NCV 05000528/2022003-01, Complacency 05000529/2022003-01, and 05000530/2022003-01 Open/Closed The inspectors reviewed a self-revealed, Green, non-cited violation of technical specification 5.4.1.a, Regulatory Guide 1.33, Revision 2, appendix A, section 9.a, for the licensees failure to ensure that maintenance that could affect the performance of safety-related equipment was properly preplanned and performed in accordance with written procedures, documented instructions, or drawings appropriate to the circumstances. Specifically, the licensees failure to follow procedures during the work planning and clearance processes resulted in an unintended personnel contact event with an energized portion of the Unit 2, 13.8 kV intermediate bus causing a partial loss of offsite power to Units 1 and 3. The partial loss of offsite power to Units 1 and 3 resulted in the valid actuation and loading of the Unit 1 emergency diesel generator B and Unit 3 emergency diesel generator A.

Description:

Offsite 525 kV AC power is supplied to each units 13.8 kV intermediate buses via a preferred and alternate secondary winding from two of the three startup transformers.

Each 13.8 kV intermediate bus provides power to one class 1E 4.16 kV bus, which provides power to one train of safety-related equipment. On a loss of offsite power, the associated trains safety-related emergency diesel generator provides power to the class 1E 4.16 kV safety bus.

On October 20, 2021, the licensee was performing planned maintenance in the switchgear cubicles of the Unit 2 13.8 kV train B intermediate bus. An electrician performing work in the B cubicle of the switchgear inadvertently contacted an energized, 13.8 kV element resulting in an electrical fault which tripped open the 525 kV breakers and de-energized startup transformer AE-NAN-X02. This resulted in a loss of power to the Unit 1 train B and Unit 3 train A 13.8 kV intermediate buses and consequently, a loss of power to the respective class 1E 4.16 kV safety buses. As designed, the Unit 1 emergency diesel generator B and Unit 3 emergency diesel generator A automatically started upon the undervoltage conditions and restored power to their respective class 1E 4.16 kV safety buses.

The inspectors reviewed the licensees cause evaluation and identified three examples of the licensees failure to follow procedures, which directly contributed to the worker inadvertently contacting an energized 13.8 kV element:

(1) During the clearance review, walkdown, and pre-job brief, the job leader assigned to the maintenance activity used the copy of the station electrical distribution main single line drawing, 13-E-MAA-0001, that was already used and marked up by a previous independent check to verify the adequacy of the clearance. Procedure 40DP-9OP29, Power Block Clearance and Tagging, revision 67, step 4.4.1 states, in part, to review ALL the following in the work document to understand the scope of work and the protection needed for personnel and equipment protection. This review is an independent review, and the reviewer shall pull all drawings, procedures, work documents, or other review sources independently. By using the marked-up drawings, the job leader did not perform the required independent review using a clean copy of the drawings. A proper, independent review of plant drawings to understand the scope of work and protection needed for personnel and equipment protection would have shown that while clearance 422839 de-energized the 13.8 kV line side power entering the C cubicle, cross-connecting power from the 13.8 kV line side power entering the A cubicle was still present in the B cubicle.

(2) Repetitive maintenance work order 5253920 for the cleaning and inspection of Unit 2 non-class 1E 13.8 kV outdoor switchgear, 2ENANS06, is a generic work order written for the entire cleaning and inspection of the S06 switchgear, which includes individual cubicles designated AA, A, B, C, and D. Two clearances were written for the work order to de-energize the two different sources of power coming into the various cubicles. Clearance 422838 de-energized the 13.8 kV line side power to the breaker in the A cubicle, while clearance 422839 de-energized the 13.8 kV line side power to the breaker in the C cubicle.

On October 20, 2021, the employee designated as the clearance acceptor performed the procedurally required walkdown of clearance 422839 for the work to be performed under work order 5253920 to verify that the planned work location was inside the clearance boundary. Procedure 40DP-9OP29, Power Block Clearance and Tagging, revision 67, step 4.8.2.E states, in part, to ensure clearance is walked down for the items in the clearance related to the specific work document of the discipline. Step 4.8.2.E.4 states, in part, that clearance walkdown consists of ANY of the following activities, as applicableVerify work location is inside the clearance boundaries. Contrary to these steps, the clearance acceptors walkdown failed to identify that the planned work in the B cubicle was outside of the clearance 422839 boundary prior to accepting the clearance.

(3) Procedure 01DP-0IS13, Palo Verde Generating Station Electrical Safe Work Practices, revision 16, step 4.5.2 states, in part, that the initial Live-Dead-Live (LDL) check shall be performed to test each and every exposed electrical conductor or circuit part within the restricted approach boundary/minimum approach distance to verify the absence of nominal system voltage. Before commencing, the crew discussed the scope of the work to be performed and performed a live-dead-live check in the C cubicle. Upon verifying that no voltage existed in the C cubicle, they deemed that the cubicles they planned to work were all de-energized and proceeded with the clean and inspection. They believed this was acceptable due to their understanding that clearance 422839 had removed power from all except the A cubicle and that a live-dead-live check in the C cubicle would verify that all exposed electrical elements within their planned work boundary had been de-energized. This initial live-dead-live check and the crews mindset that the clearance was acceptable resulted in them not performing the subsequent live-dead-live checks in the other cubicles as required.

When reviewing the licensees cause evaluation, inspectors noted that throughout the work planning and clearance process, the licensee believed that all aspects of the planning process had been done correctly. This overconfidence drove the workgroups actions during the process, resulting in the three examples of the failure to follow procedures described above. The inspectors assessed that this belief and expectation of a successful outcome was the most significant contributing cause of the procedural violations.

Corrective Actions: Operators restored offsite power to the affected buses from the alternate sources. The licensee entered the issue into the corrective action program and performed a cause evaluation. The licensee developed and executed a plan to reinforce worker responsibility and sensitivity to the clearance process and electrical safe work practices that included increased supervisor involvement, sitewide training focused on the learnings from this event, updating of current station trainings on clearance and tagging and electrical safety to incorporate lessons learned, and updating station procedures to more clearly define work comprising multiple clearances.

Corrective Action References: Condition reports 21-12436, 21-12511, and 21-12543

Performance Assessment:

Performance Deficiency: The failure to follow procedures was a performance deficiency.

Screening: The inspectors determined the performance deficiency was more than minor because it was associated with the Human Performance attribute of the Initiating Events cornerstone and adversely affected the cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. Specifically, on October 20, 2021, the licensees failure to follow procedures during the work planning and clearance processes resulted in an unintended personnel contact event with an energized portion of the Unit 2, 13.8 kV intermediate bus causing a partial loss of offsite power to Units 1 and 3. The partial loss of offsite power to Units 1 and 3 resulted in the valid actuation and loading of the Unit 1 emergency diesel generator B and Unit 3 emergency diesel generator A.

Significance: The inspectors assessed the significance of the finding using IMC 0609 Appendix A, The Significance Determination Process (SDP) for Findings At-Power. Using Exhibit 1, Initiating Events Screening Questions, the finding was screened as having very low safety significance (Green) because the finding did not cause a reactor trip and the loss of mitigation equipment relied upon to transition the plant from the onset of the trip to a stable shutdown condition (e.g., loss of condenser, loss of feedwater).

Cross-Cutting Aspect: H.12 - Avoid Complacency: Individuals recognize and plan for the possibility of mistakes, latent issues, and inherent risk, even while expecting successful outcomes. Individuals implement appropriate error reduction tools. Specifically, since the workgroup went into the work believing that the clearance was sufficient for their work area, they did not perform the required additional verifications during the work validation activities and in the field to confirm the clearance was adequate for the work scope.

Enforcement:

Violation: Technical specification 5.4.1.a states, in part, that written procedures shall be established, implemented, and maintained covering the applicable procedures recommended in Regulatory Guide 1.33, revision 2, appendix A, February 1978. Regulatory Guide 1.33, revision 2, appendix A, section 9.a, requires, in part, that maintenance that can affect the performance of safety-related equipment should be properly preplanned and performed in accordance with written procedures, documented instructions, or drawings appropriate to the circumstances.

Contrary to the above, on October 20, 2021, the licensee failed to ensure that maintenance that could affect the performance of safety-related equipment was properly preplanned and performed in accordance with written procedures, documented instructions, or drawings appropriate to the circumstances. Specifically, the licensee failed to follow procedures during the work planning and clearance processes resulted in an unintended personnel contact event with an energized portion of the Unit 2, 13.8 kV intermediate bus causing a partial loss of offsite power to Units 1 and 3.

Enforcement Action: This violation is being treated as a non-cited violation, consistent with Section 2.3.2 of the Enforcement Policy.

EXIT MEETINGS AND DEBRIEFS

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

On October 7, 2022, the inspectors presented the integrated inspection results to Mr. T. Horton, Senior Vice President, and other members of the licensee staff.

DOCUMENTS REVIEWED

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.01 Calculations 13-MC-ZJ-200 As Built Control Building Flooding Calculation 8

71111.01 Corrective Action 22-07104, 22-07740, 22-8544, 22-9923

Documents

71111.01 Drawings 03-C-ZVC-554 Underground Utilities Unit 3 Plan Zone V3E 29

71111.01 Drawings 13-C-ZVA-002 Site Drainage General Arrangement Plan 8

71111.01 Drawings 13-C-ZVC-065 Site Rough Grading Plan Area 1 4

71111.01 Drawings 13-C-ZVC-066 Site Rough Grading Plan Area 2 6

71111.01 Drawings 13-C-ZVC-070 Site Rough Grading Plan Area 6 6

71111.01 Drawings 13-C-ZVC-074 Site Rough Grading Plan Area 10 3

71111.01 Drawings 13-C-ZVC-100 Site Storm Drainage Dikes and Channels Sheet 1 6

71111.01 Drawings 13-P-SJE-301 Control BLDG Level A Plumbing Plan Between Elevation 74 5

foot and 100 foot,

71111.01 Drawings 13-P-ZAE-201 Auxiliary BLDG Level C Plumbing Plan Between Elevation 7

51.5 foot & 70 foot

71111.01 Drawings 13-P-ZAE-202 Auxiliary BLDG Level B Plumbing Plan Between Elevation 14

foot & 80 foot

71111.01 Drawings A0-M-STP-001 P&I Diagram Sanitary & Treatment 31

71111.01 Miscellaneous SWIMS Database, Potential Tornado borne missile zones 07/14/2022

71111.01 Miscellaneous DMWO 4541553 ENG 0

71111.01 Miscellaneous EDG 2011-00003, 2012-00703, 2022-00141

71111.01 Miscellaneous 13-MS-A135 Evaluation of Internal Flooding in Safety Related Structures 0

as a Result of Localized Ponding at the Power Block During

a LIP Event in Support of NRC 50.54(f) Letter and the

PVNGS Flood Hazard Reevaluation Report

71111.01 Miscellaneous OpESS 2012/01- High Wind Generated Missile Hazards 12/29/2011

71111.01 Procedures 01DP-0XX01 Control and Monitoring of Potential Tornado Borne Missiles 6

71111.01 Procedures 40AO-9ZZ21 Acts of Nature 39

71111.04 Corrective Action 18-12153, 19-02418, 17-15589

Documents

71111.04 Drawings 01-M-AFP-001 P & I Diagram Auxiliary-Feedwater System 45

71111.04 Drawings 01-M-SGP-002 P & I Diagram Main Steam System 53

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.04 Drawings 01-M-SIP-001 P&I Diagram Safety Injection and Shutdown Cooling 63

71111.04 Drawings 01-M-SIP-002 P&I Diagram Safety Injection and Shutdown Cooling 44

71111.04 Miscellaneous PVNGS DBM, Safety Injection System 41

71111.04 Procedures 40OP-9AF01 Essential Auxiliary Feedwater System 70

71111.04 Procedures 40ST-9AF07 Auxiliary Feedwater Pump AFA-P01 Monthly Valve 6

Alignment

71111.04 Procedures 40ST-9SI07 Train A LPSI and CS System Alignment Verification 21

71111.04 Procedures 40ST-9SI07 High Pressure Safety Injection System Alignment 21

Verification

71111.05 Calculations 13-MC-FP-808 Combustible Loads - Diesel Generator Building 6

71111.05 Corrective Action FSCCR 5460282, 22-07435, 22-07441, FSCCR 5457823

Documents

71111.05 Drawings 01-M-FPF-304 Control Building Isometric Fire Protection System CO2 0

System

71111.05 Drawings 01-M-FPP-004 P & I Fire Protection System (CO2 System) 11

71111.05 Miscellaneous DBM, Fire Protection System 15

71111.05 Miscellaneous Design Basis Manual, Fire Protection System, Section 6.3. 15

Cable Spreading Room

71111.05 Miscellaneous Pre-fire Strategies Manual 30

71111.05 Procedures 14DP-0FP02 Fire System Impairments and Notifications 28

71111.05 Procedures 14DP-0FP33 Control of Transient Combustibles 33

71111.05 Procedures 32FT-9QD20 Appendix-R Emergency Lighting Fixture Battery Discharge 15

Test (Wall Mounted Type KE, KF, and KG)

71111.11Q Corrective Action 22-08517, 22-08549

Documents

71111.11Q Miscellaneous SES-0-06-E-07 Licensed Operator Continuing Training Simulator

Examination Scenario

71111.11Q Procedures 40DP-9OP02 Conduct of Operations 76

71111.11Q Procedures 40OP-9DG01 Emergency Diesel Generator A 81

71111.11Q Procedures 40OP-9DG02 Emergency Diesel Generator B 79

71111.11Q Procedures 40OP-9NA03 13.8 kV Electrical System (NA) 40

71111.11Q Procedures 40OP-9NB01 4.16 kV Non-Class 1E Power (NB) 33

71111.11Q Procedures 40OP-9PB01 4.16 kV Class 1E Power (PB) 34

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.12 Corrective Action 18-10997, 19-06968, 21-04389, 22-03023, 22-05196, 22-

Documents 06466, 22-06976, 22-08693, 22-08931, 20-11630, 21-

03436, 21-10609, 22-01440, 22-02575, 21-15168, 22-00896

71111.12 Miscellaneous System Training Manual: Essential Chilled Water System 7

(EC)

71111.12 Miscellaneous Performance Criteria Formulation Bases for SB System 3

(Reactor Protection)

71111.12 Miscellaneous Unit 2 Emergency Diesel Generator Train B Performance 03/29/2022

Monitoring Group Report

71111.12 Miscellaneous Maintenance Rule (a)(3) Periodic Assessment for the Period

July 2020 - December 2021

71111.12 Miscellaneous 13-VTD-C150- Carrier Air Conditioning Company Item List & Specification 4

0003 Sheets

71111.12 Miscellaneous MEE-03980 Evaluate and Approve the Use of the Superior In-line Relief 0

Valve P/N 3061X1) as a Replacement for the Henry In-line

Relief Valve (P/N 5246-1) Supplied by the Carrier Corp

71111.12 Miscellaneous QRC 0417-22 Quality Receiving Checklist for APN 00157760 Metal 08/16/2022

Bellows Pump and Motor Assembly

71111.12 Miscellaneous QRC 1054-22 Quality Receiving Checklist for APN 00100154 Relief Valve 08/05/2022

71111.12 Miscellaneous VTD-E146-00004 ABB Electro-Mechanics, INC. Operation and Maintenance 8

Instruction for Plant Protection System

71111.12 Procedures 12DP-0MC46 Receipt Inspection 18

71111.12 Procedures 36ST-9SB02 PPS Bistable Trip Units Functional Test 51

71111.12 Procedures 36ST-9SE06 Log Power Functional Test 129

71111.12 Procedures 70DP-0MR01 Maintenance Rule 47

71111.12 Procedures 87DP-0MC39 Commercial Grade Dedication (CGD) Process 3

71111.12 Work Orders 5433129, 5433130, 5433131, 5433132, 5433133, 5426759,

5434301, 5414704

71111.13 Corrective Action 22-07482, 22-07965, 22-07259, 22-07261, 22-07304, 22-

Documents 10063

71111.13 Drawings 03-M-SIP-002 P & I Diagram Safety Injection and Shutdown Cooling 38

System

71111.13 Drawings 03-P-GAF-129 Containment Building Isometric Service Gas System High 0

Pressure Nitrogen

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.13 Miscellaneous Phoenix Risk Monitor - PVGS Unit 3, Work Week 2230

Schedule Risk Evaluation 7/25/2022-7/31/2022, as of

07/29/2022

71111.13 Miscellaneous Risk Management and Readiness Plan for Containment 0

Entry Authorized Work Scopes Outside Bio Shield

71111.13 Miscellaneous Protected Equipment Scheme for SIT 1B Inoperable 07/29/2022

71111.13 Miscellaneous Phoenix Risk Monitor -PVGS Unit 1, Current Risk Summary 07/07/2022

Report as of 7/7/2022 01:05

71111.13 Miscellaneous Protected Equipment For SIA-UV660 INOP 07/07/2022

71111.13 Miscellaneous Phoenix Risk Monitor -PVGS Unit 3 Current Risk Summary

Report, as of 09/26/2022, 07:23

71111.13 Miscellaneous 18-16665-002 Engineering evaluation

71111.13 Miscellaneous 20-10092-003 Engineering reply

71111.13 Procedures 02DP-0RS01 Online Integrated Risk 9

71111.13 Procedures 02DP-0RS01 Online Integrated Risk 10

71111.13 Procedures 40DP-9AP21 Protected Equipment 7

71111.13 Procedures 40DP-9OP02 Conduct of Operations 76

71111.13 Procedures 40DP-9RS03 Risk Management Actions 1

71111.13 Procedures 40DP-9RS04 RICT PRA Functionality Determination 1

71111.13 Procedures 40DP-9RS05 Calculation of RMAT and RICT 0

71111.13 Procedures 40OP-9PB01 4.16 kV Class 1E Power (PB) 34

71111.13 Procedures 40OP-9SA01 De-Energization of BOP ESFAS 25

71111.13 Procedures 40OP-9SA01 BOP ESFAS Modules Operation 33

71111.13 Procedures 40OP-9SA02 De-Energization of BOP ESFAS 25

71111.13 Procedures 73ST-9XI13 Train A HPSI Injection and Miscellaneous SI Valves - 37

Quarterly - Inservice Test

71111.13 Procedures 93DP-0LC06 Notice of Enforcement Discretion 6

71111.13 Work Orders 5398500, 5457808, 5477186

71111.15 Corrective Action 21-06761, 20-14165, 20-14089, 19-14740, 22-08243, 22-

Documents 07989, 18-16090, 22-10063, 17-00288

71111.15 Drawings 01-M-CHP-001 P & I Diagram Chemical and Volume Control System 39

71111.15 Drawings 01-M-RCP-001 P & I Diagram Chemical and Volume Control System 44

71111.15 Drawings 01-M-SGP-001 P & I Diagram Main Steam System 72

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.15 Drawings 02-9305722-D PCB Schematic, FBEVAS/CPIAS/CREFAS 2

71111.15 Drawings 03-E-SAB-002 Elementary Diagram Engineered Safety Features Actuation 1

System BOP-ESFAS Manual Actuation

71111.15 Drawings 03-E-SAB-004 Elementary Diagram ESF Actuation System BOP-ESFAS 1

Intertying Circuits Train A & Train B

71111.15 Drawings 03-E-SAF-0002 Control Wiring Diagram Engineered Safety Features 1

Actuation System BOP-ESFAS Manual Actuation

71111.15 Drawings 03-E-SAF-0004 Control Wiring Diagram Engineered Safety Features 8

Actuation System COP-ESFAS Intertying Circuits

71111.15 Drawings J691-00044 1 Inch Pressure Regulating Valve Project Control Drawing 10

71111.15 Miscellaneous DBM, Diesel Generator, Class 1E Standby Generation, Fuel 26

Oil Storage and Transfer System Design Basis Manual

71111.15 Miscellaneous Main Steam Design Basis Manual 33

71111.15 Miscellaneous PVGNS DBM, Chemical and Volume Control System 26

71111.15 Miscellaneous PVGS Operator Information Manual April 2020

71111.15 Miscellaneous Formal Troubleshooting Game Plan, B BOP ESFAS 09/26/2022

Sequencer Auto Test Failure in Unit 3

71111.15 Miscellaneous 11-F002 Licensing Document Change Request

71111.15 Miscellaneous 13-J-085-033 Self-Acting Pressure Regulators 4

71111.15 Miscellaneous 13-PN-0204 Fabrication and Installation of Nuclear Piping Systems for 25

Arizona Public Service Company, Palo Verde Generating

Station Units 1, 2, and 3

71111.15 Miscellaneous 13-VTD-F183- FBEVAS/CREFAS/CPIAS Logic Module User and 0

00002 Maintenance Manual for PVGS BOP ESFAS

71111.15 Miscellaneous 13-VTD-T020- Target Rock Technical Manual for Pressure Regulating 4

00015 Valves

71111.15 Miscellaneous 18-16090-002 Engineering Evaluation

71111.15 Miscellaneous 22-08243-003 Prompt Operability Determination 08/12/2022

71111.15 Miscellaneous 33701270 Condition Report Action Item

71111.15 Miscellaneous 3557798 Palo Verde Action Request

71111.15 Miscellaneous 3566291 Condition Report Action Item

71111.15 Miscellaneous 3566294 Condition Report Action Item

71111.15 Miscellaneous 92-SG-006 Engineering Evaluation Report 01/06/1992

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.15 Miscellaneous ANPD-19591 Resolution of Open Items Addressed at NRC Design Review

of ESF Load Sequencer

71111.15 Miscellaneous EDC 2016-00115 Engineering Design Change

71111.15 Miscellaneous EDC 2016-00119 Engineering Design Change

71111.15 Miscellaneous N001-0604-00761 PVNGS Units 1, 2, and 3 Loss of AC Power with Auxiliary 0

Spray Valve Leakage

71111.15 Procedures 40DP-9OP06 Operations Department Repetitive Task Program Vol. 1 132

71111.15 Procedures 40EP-9EO04 Steam Generator Tube Rupture 34

71111.15 Procedures 40OP-9CH01 CVCS Normal Operations 81

71111.15 Procedures 40OP-9SA01 BOP ESFAS Modules Operation, 33

71111.15 Procedures 73ST-9XI20 ADVs - Inservice Test 57

71111.15 Procedures 73ST-9XI22 CH Valves - Inservice Test 23

71111.15 Work Orders 4747946, 4747936, 2309967, 5464132, 5477186

71111.18 Corrective Action 18-10012, 22-03600, 22-04693, 22-04716

Documents

71111.18 Miscellaneous Training Task Master List for SRO Task# 124000379337 07/15/2022

Perform the Severe Accident Management Guidelines

71111.18 Miscellaneous Procedure Comment Form: Main Control Room SAG-1: 06/28/2018

Initial Response, and Main Control Room SAG-2: TSC

Recommending Strategies

71111.18 Miscellaneous Procedure Comment Form: TSC SAG-3 through SAG-10, 07/05/2018

DPG, and Tech Support Guidelines

71111.18 Miscellaneous Procedure Comment Form: TSC SAG-3 through SAG-10, 07/26/2018

DPG, and Tech Support Guidelines

71111.18 Miscellaneous CRDR 4723203 Industry Initiative to Maintain Severe Accident Management 02/18/2019

Guidelines

71111.18 Miscellaneous NLR11C050300 Licensed Operator Continuing Training Classroom Lesson: 10/06/2022

SAMG/B 5.b

71111.18 Miscellaneous NLR12S020100 Licensed Operator Continuing Training Simulator Scenario: 04/10/2012

Blackout, SAMGs

71111.18 Procedures 40DP-9AP23 Severe Accident Management Guidelines Deviation 2

Document

71111.18 Procedures 40DP-9AP26 Severe Accident Guideline (SAG) Technical Guidelines, 2

71111.18 Procedures 40DP-9OP47 Severe Accident Management Guidelines Maintenance 1

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.18 Procedures 4MG-9ZZ01-001 Main Control Room SAG-1: Initial Response 1

71111.18 Procedures 4MG-9ZZ01-002 Main Control Room SAG-2: TSC Recommending Strategies 1

71111.19 Drawings 02-M-CHP-002 P&I Diagram Chemical and Volume Control System 59

71111.19 Procedures 40ST-9DG01 Diesel Generator A Test 51

71111.19 Procedures 73ST-9CH06 Charging Pumps - Inservice Test 38

71111.19 Procedures 73ST-9DG07 Class 1E Diesel Generator Load Rejection, 24 Hour Rated 11

Load and Hot Start Test Train A

71111.19 Work Orders 5332224, 5333244, 5332598

71111.22 Calculations 02-EC-MA-0221 Load Equipment Minimum Operating Voltage Levels 14

71111.22 Corrective Action 22-08037, 5471225, 5471705, 5471706, 22-09187, 22-

Documents 09290, 22-09295, 22-09296, 22-09304, 16-14135, 22-

07988, 22-08026, 22-08028

71111.22 Miscellaneous PVGS DBM - Class 1E 125 VDC Power System 21

71111.22 Miscellaneous PVNGS Design Basis Manual - Reactor Coolant System 32

71111.22 Miscellaneous Design Basis Manual- Fuel Pool Cooling and Cleanup 18

System

71111.22 Miscellaneous Unit 2 Control Room Log 09/08/2022-

09/09/2022

71111.22 Miscellaneous PVGS DBM - Safety Injection System 21

71111.22 Miscellaneous 02-E-ZZI-0003 Electrical Equipment Database 18

71111.22 Miscellaneous 13-MC-SI-0220 Containment Spray System Hydraulic Analysis and Pump 7

Surveillance Testing Requirements

71111.22 Miscellaneous 13-MS-031 Evaluation of Heat Loss to Containment from the Reactor 2

Coolant System

71111.22 Miscellaneous APW-89-0540000 Pressurizer Heater Capacity Study

71111.22 Miscellaneous CRAI 3566294

71111.22 Miscellaneous Godwin Pump Manual

HL100MC D4M

71111.22 Miscellaneous MN725-A00935 RSB 5-1 Natural Circulation Cooldown Analysis for Power 4

Uprate and SG Replacement at PVNGS Units 1, 2, and 3

71111.22 Miscellaneous VTD-I075-00012 Ingersoll-Rand Installation, Operation, and Maintenance 6

Instructions for 8X23WDF Containment Spray Pumps

71111.22 Procedures 32MT-9ZZ52 Battery Charger Preventive Maintenance 35

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.22 Procedures 32ST-9RC01 9 Month Pressurizer Backup Heater Capacity Test 14

71111.22 Procedures 32ST-9ZZ34 Class 1E Battery Charger 18 Month Surveillance Test 15

71111.22 Procedures 40EP-9EO09 Functional Recovery 66

71111.22 Procedures 40MG-9ZZ02-010 Technical Support Center SAG-10: Control SFP Level 0

71111.22 Procedures 40MG-9ZZ07-001 FLEX Support Guidelines Mode 1, 2, 3, or 4 1

71111.22 Procedures 40ST-9R02 EFRFDADS (Preferred) Calculation of RCS Water Inventory 55

71111.22 Procedures 40ST-9RC02 ERDADS (Preferred) Calculation of RCS Water Inventory 55

71111.22 Procedures 40ST-9RC05 Manual Calculation of RCS Water Inventory Balance 34

71111.22 Procedures 73HF-1RC08 RCS Heat loss Measurement 1

71111.22 Procedures 73HF-2RC08 RCS Heat loss Measurement 1

71111.22 Procedures 73HF-3RC08 RCS Heat loss Measurement 0

71111.22 Procedures 73ST-9AF02 Auxiliary Feedwater A - Inservice Test 61

71111.22 Procedures 73ST-9SI06 Containment Spray Pump and Check Valves- Inservice Test 46

71111.22 Procedures PR-0906 Diverse and Flexible Coping Strategies (FLEX) 2

71111.22 Work Orders 5332176, 5346124, 5347966, 5347206, 5299848, 5299859,

299872

71114.06 Corrective Action 22-08234, 22-08314, 22-08393, 22-08394

Documents

71114.06 Miscellaneous 2203 and 2204 Drill Report 09/08/2022

71114.06 Miscellaneous 2022 Emergency Preparedness Scenario 2204

71114.06 Miscellaneous EP-0801H [Emergency Action Level] Classification Matrix Hot

Conditions ([Reactor Coolant System] > 210°F)

71114.06 Miscellaneous EP-0803H [Protective Action Recommendation] Flowchart

71114.06 Miscellaneous EP-0804G Release Evaluation Flowchart

71114.06 Miscellaneous EP-0930B [Emergency Action Level] Classification Matrix All Conditions

71114.06 Procedures EP-0900-011 ERO Positions Emergency Operations Director (EOF) 1

71151 Miscellaneous Units 1, 2, and 3 MSPI Run Demands Failures Report 08/26/2022

7/1/2021 - 5/31/2022

71151 Miscellaneous Units 1, 2, and 3, MSPI Unavailability Reports 7/1/2021 - 08/24/2022

5/31/2022

71151 Miscellaneous Units 1, 2, and 3, MSPI EDG System May 2022 UAI 06/15/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI EDG System May 2022 URI 06/17/2022

Inspection Type Designation Description or Title Revision or

Procedure Date

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI EDG System May 2022 PLE 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI RHR CS Systems May 2022 UAI 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI RHR CS Systems May 2022 URI 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI RHR CS Systems May 2022 PLE 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI EW SP Systems May 2022 UAI 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI EW SP Systems May 2022 URI 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI EW SP Systems May 2022 PLE 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI HPSI System May 2022 UAI 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI HPSI System May 2022 URI 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI HPSI System May 2022 PLE 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI AFW System May 2022 UAI 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI AFW System May 2022 URI 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, MSPI AFW System May 2022 PLE 06/17/2022

Derivation Reports

71151 Miscellaneous Units 1, 2, and 3, All Systems May 2022 MSPI Margin 06/15/2022

Reports

71151 Miscellaneous Units 1, 2, and 3, Control Room Operator Logs 7/1/2021 - 09/25/2021

5/31/2022

71151 Miscellaneous Units 1, 2, and 3, PI Summary Report 07/2021-06/2022 07/08/2022

71151 Miscellaneous 13-NS-C075 MSPI Bases Document 12

71151 Miscellaneous 13-NS-C075 MSPI Bases Document 13

Inspection Type Designation Description or Title Revision or

Procedure Date

71151 Miscellaneous 13-NS-C075 MSPI Bases Document 14

71151 Miscellaneous 13-NS-C075 MSPI Bases Document 15

71151 Miscellaneous 13-NS-C075 MSPI Bases Document 16

71151 Procedures 70DP-0MR01 Maintenance Rule 46

71151 Procedures 70DP-0PI01 Performance Index Data Mitigating Systems Cornerstone 9

71151 Procedures 93DP-0LC09 NRC ROP PI Data Collection, Verification and Submittal 12

71152A Corrective Action 22-05673, 21-08605, 21-08666, 21-09934, 21-12252, 21-

Documents 11574, 21-14465, 20-11172, 20-13761, 20-15237, 21-

10885, 21-11296

71152A Miscellaneous Design Basis Manual - Auxiliary Feedwater System 26

71152A Miscellaneous CRDR 335114

71152A Miscellaneous ERET 2826879

71152A Miscellaneous CRDR 2857195

71152A Miscellaneous CRAI 2872382

71152A Miscellaneous CRDR 4481512

71152A Miscellaneous13-420 Ultrasonic Thickness Report

71152A Miscellaneous13-528 Ultrasonic Thickness Report

71152A Miscellaneous 13-MS-A137 Development of AF System Pipe Arc Length Acceptance 1

Criteria Associated with Calculated Max Void Volumes

71152A Miscellaneous14-054 Ultrasonic Thickness Report

71152A Miscellaneous14-055 Ultrasonic Thickness Report

71152A Miscellaneous 20-1188 Ultrasonic Thickness Report

71152A Miscellaneous 21-12252-006 Level Three Evaluation Report

71152A Miscellaneous 21-14465-007 Level One Cause Evaluation

71152A Miscellaneous 22-00769-003 MRFF Evaluation

71152A Miscellaneous 22-00769-008 Engineering Reply

71152A Miscellaneous 22-05673-004 MRFF Evaluation

71152A Miscellaneous 22-05673-005 Level Three Evaluation Report

71152A Miscellaneous22-733 Ultrasonic Thickness Report

71152A Miscellaneous VTD-E146-00008 ABB Electro-Mechanics inc Technical Manual for Control 8

element Drive Mechanism Control System (CEDMCS)

71152A Procedures 73ST-9AF02 Auxiliary Feedwater A - Inservice Test 60

71152A Procedures 73ST-9AF03 Auxiliary Feedwater B - Inservice Test 32

Inspection Type Designation Description or Title Revision or

Procedure Date

71152A Procedures 73ST-9AF04 Auxiliary Feedwater Pump A - Comprehensive Test 29

71152A Procedures 73ST-9AF05 Auxiliary Feedwater Pump B - Comprehensive Pump Test 19

71152A Work Orders 5398840, 5359440, 5307466, 5412999, 5410408, 5298870,

5359440, 5421125, 5456143

71153 Corrective Action 21-12436, 22-08531, 21-14465

Documents

71153 Drawings 02-E-NAA-0002 Single Line Diagram: 13.8 kV Non-class 1E Power System 12

Intermediate SWGR 2E-NAN-S06 & Start-up XFMR AE-

NAN-X02

71153 Drawings 13-E-MAA-0001 Main Single Line Diagram 31

71153 Miscellaneous Level 1 CAQ Root Cause Analysis Report, 21-14465-007 1

71153 Miscellaneous 422838 2068-3 NAN-S06/S04/X04 Bus Clearance 08/19/2021

71153 Miscellaneous 422839 2068-2 NAN-S04/S06/X04 Clearance 08/19/2021

71153 Miscellaneous CRAI 4488583

71153 Miscellaneous EN 55534 Valid Specified System Actuations of Unit 1 and Unit 3 10/21/2021

Emergency Diesel Generators

71153 Miscellaneous VTD-E146-00008, ABB Electro-Mechanics Inc Technical Manual for Control 8

element Drive Mechanism Control System (CEDMCS)

71153 Procedures 01DP-0IS13 Palo Verde Generating Station Electrical Safe Work 16

Practices

71153 Procedures 01DP-0IS13 Palo Verde Generating Station Electrical Safe Work 17

Practices

71153 Procedures 30DP-9MP01 Conduct of Maintenance 84

71153 Procedures 40DP-9OP29 Power Block Clearance and Tagging 67

71153 Procedures 40DP-9OP29 Power Block Clearance and Tagging 68

71153 Work Orders 5253920, 5394082

23