IR 05000321/2022002

Integrated Inspection Report 05000321/2022002 and 05000366/2022002

ML22209A253
Person / Time
Site:	Hatch
Issue date:	08/03/2022
From:	Alan Blamey NRC/RGN-II
To:	Gayheart C Southern Nuclear Operating Co
References
IR 2022002
Download: ML22209A253 (15)

Text

SUBJECT:

EDWIN I. HATCH - INTEGRATED INSPECTION REPORT 05000321/2022002 AND 05000366/2022002

Dear Ms. Gayheart:

On June 30, 2022, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Edwin I. Hatch. On July 25, 2022, the NRC inspectors discussed the results of this inspection with Johnny Weissinger 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, Alan J. Blamey, Chief Reactor Projects Branch 2 Division of Reactor Projects Docket Nos. 05000321 and 05000366 License Nos. DPR-57 and NPF-5

Enclosure:

As stated

Inspection Report

Docket Numbers: 05000321 and 05000366

License Numbers: DPR-57 and NPF-5

Report Numbers: 05000321/2022002 and 05000366/2022002

Licensee: Southern Nuclear Operating Company, INC.

Facility: Edwin I. Hatch

Location: Baxley, GA

Inspection Dates: April 01, 2022 to June 30, 2022

Inspectors: R. Smith, Senior Resident Inspector J. Hickman, Resident Inspector

Approved By: Alan J. Blamey, Chief Reactor Projects Branch 2 Division of Reactor Projects

Enclosure

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Edwin I. Hatch, 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.

PLANT STATUS

Unit 1 began the inspection period at 100 percent rated thermal power (RTP). On May 23, 2022, the operators shut down the unit to perform maintenance on the F safety relief valve (SRV).

The unit was restarted on May 25, 2022 and reached approximately 100 percent RTP on May 31, 2022. The unit operated there for the remainder of the inspection period.

Unit 2 began the inspection period at 100 percent RTP. On May 29, 2022, the operators reduced power to 65 percent RTP for a rod pattern adjustment and returned the unit to 100 percent RTP the same day. The unit operated there for the remainder 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

Seasonal Extreme Weather Sample (IP Section 03.01) (1 Sample)

(1) The inspectors evaluated readiness for seasonal extreme weather conditions prior to the onset of Summer Readiness for the following systems:

1. Plant service water (PSW) on May 9, 2022.

2. Offsite and alternate alternating current (AC) power systems on May 11, 2022.

71111.04 - Equipment Alignment

Partial Walkdown Sample (IP Section 03.01) (4 Samples)

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

(1) Unit 1 A emergency diesel generator (EDG) system following testing, using 34SO-R43-001-1, on April 5, 2022.

(2) Unit 1 PSW system during 1A PSW pump replacement on April 26, 2022.

(3) Unit 1 residual heat removal (RHR) system in a shutdown cooling alignment following reactor shutdown for the replacement of the F SRV pilot, using 34SO-E11-010-1, on May 24, 2022.

(4) Unit 2 reactor core isolation cooling (RCIC) system during the outage of the high pressure coolant injection (HPCI) system, using 34SO-E51-001-2, on May 31, 2022.

71111.05 - Fire Protection

Fire Area Walkdown and Inspection Sample (IP Section 03.01) (6 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 1 and 2 EDG building on April 8, 2022

(2) Unit 1 reactor building 158 and 164-foot elevations on April 27, 2022.

(3) Control building 130-foot elevation on April 15, 2022.

(4) Diverse and Flexible Coping Strategy (FLEX) storage building on April 21, 2022.

(5) Unit 1 turbine building on April 29, 2022.

(6) Unit 2 reactor building 130-foot elevation on May 17, 2022.

71111.06 - Flood Protection Measures

Inspection Activities - Internal Flooding (IP Section 03.01) (1 Sample)

The inspectors evaluated internal flooding mitigation protections in the:

(1) Safety related pull boxes PB1-AT and PB2-BU and evaluated cable submergence protection on May 12, 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 control room during a plant shutdown, they observed power decrease by reducing reactor recirculation flow to minimum, inserting control rods to 20 percent RTP, followed by a main turbine trip, and the insertion of a manual reactor trip to complete the shutdown.

They then observed the operating crew establish a controlled cooldown rate within technical specification (TS) limits, for a Unit 1 maintenance outage, on May 22 and 23, 2022.

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

(1) The inspectors observed and evaluated License Operator Requalification Program scenario H-LT-AF-00114, CPE Design - Loss of CRD, RFPT Controller Malfunction, Loss of Iso-Phase Bus Cooling, Loss of the 2A Drywell Chiller, Torus Leak (Isolation),

Loss of Feed Water Heating, HPCI Steam Leak, Emergency Depressurization, on April 13, 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) Unit 1 and 2 EDG fuel oil transfer system Y52 due to maintenance rule condition monitoring events being exceeded, on May 20, 2022.

(2) Unit 2 C EDG for being greater than 75-percent of the allowed unavailability time, resulting in the EDG being near 10CFR50.65 (a)(1) status, on May 27, 2022.

71111.13 - Maintenance Risk Assessments and Emergent Work Control

Risk Assessment and Management Sample (IP Section 03.01) (5 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 1 elevated risk due to the surveillance of low voltage switchyard fixed water spray systems for the E startup auxiliary transformer, on May 12, 2022.

(2) Unit 1 elevated risk due to division 2 RHR outage, from May 17 through 19, 2022.

(3) Unit 1 elevated risk during unit shutdown to replace the F SRV pilot, on May 23, 2022.

(4) Unit 2 elevated risk due to the HPCI system maintenance outage, June 1, 2022.

(5) Unit 1 elevated risk due to division 2 core spray (CS) system outage, from June 28 through 30, 2022.

71111.15 - Operability Determinations and Functionality Assessments

Operability Determination or Functionality Assessment (IP Section 03.01) (6 Samples)

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

(1) Condition report (CR) 10874075. Unit 1 A PSW pump with a degraded seismic restraint.

(2) CR 10874078. Three

(3) out of 16 bolts for Unit 1 A PSW pump bowl found outside of torque specification.

(3) CR 10878586, Unit 1 A EDG battery charger not operating properly.

(4) CR 10880391. Unit 2 division 1 of residual heat removal service water (RHRSW)piping identified with a localized point below calculated minimum pipe wall thickness.

(5) CR 10857368. Unit 1 reactor building to outside differential pressure unexpected decrease caused by blocking open secondary containment doors.

(6) Correction action reports (CARs) 304318, 309195, 309199. Unit 1 A PSW pump motor excessive vibration.

71111.18 - Plant Modifications

Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02) (2 Samples)

The inspectors evaluated the following temporary or permanent modifications:

(1) Isolation of cable SGX708C03 (associated with Unit 2 main disconnect circuit), on both ends, to support troubleshooting and repair.

(2) Removal of Unit 2 PSW valve 2P41R606 internals to restore PSW flow to the hydrogen and isophase bus coolers.

71111.19 - Post-Maintenance Testing

Post-Maintenance Test Sample (IP Section 03.01) (5 Samples)

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

(1) 34SV-P41-001-1, Plant Service Water Pump Operability, following the replacement of the Unit 1 A PSW motor, on April 9 through 10, 2022.

(2) 34SV-P41-001-2, Plant Service Water Pump Operability, following repairs of the Unit 2 A PSW pump overload and lockout relay circuit, on May 13, 2022.

(3) 34SV-E11-002-1, Residual Heat Removal Valve Operability, following breaker modifications and motor operator valve testing, on May 18 through 20, 2022.

(4) 34SV-E41-001-2, HPCI Valve Operability, and 34SV-E41-002-2, HPCI Pump Operability, following planned system outage, on June 2 through 3, 2022.

(5) SNC1198858, 2T1B004B - RCIC Pump Room Cooler Unit, pressure test following vendor coating of the room cooler to repair tube sheet and tube leaks, on June 13, 2022.

71111.20 - Refueling and Other Outage Activities

Refueling/Other Outage Sample (IP Section 03.01) (1 Sample)

(1) The inspectors evaluated Unit 1 maintenance outage activities due to pilot valve leakage on the F SRV, from May 22 through May 25.

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) (4 Samples)

(1) 34SV-R43-001-1, Diesel Generator 1A Monthly Test, Version 25.5, on April 4, 2022.

(2) 34IT-OPS-003-0, Security and Dry Storage Power Systems Test, Version 13.2, on April 13, 2022.

(3) 34SV-C41-002-1, Standby Liquid Control Pump Operability Test, Version 19.0, on May 4, 2022.

(4) 52SV-FPX-005-0, Surveillance of Low Voltage Switchyard Fixed Water Spray Systems for the 1E Startup Auxiliary Transformer, Version 1.0, on May 12, 2022.

Inservice Testing (IP Section 03.01) (1 Sample)

(1) 34SV-R43-013-2, Diesel Generator 2C 24-Month Operability Test, Version 7.1, on April 27, 2022.

71114.06 - Drill Evaluation

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

The inspectors evaluated:

(1) Licensed reactor operators respond to a HPCI steam line break in the simulator and the inspectors observed the crew make an emergency declaration and notification. This represented a drill and exercise performance (DEP) opportunity on April 6,

OTHER ACTIVITIES - BASELINE

===71151 - Performance Indicator Verification

The inspectors verified licensee performance indicators submittals listed below:

BI01: Reactor Coolant System (RCS) Specific Activity Sample (IP Section 02.10)===

(1) Unit 1 (April 1, 2021, to March 31, 2022)

(2) Unit 2 (April 1, 2021, to March 31, 2022)

BI02: RCS Leak Rate Sample (IP Section 02.11) (2 Samples)

(1) Unit 1 (April 1, 2021, to March 31, 2022)

(2) Unit 2 (April 1, 2021, to March 31, 2022)

INSPECTION RESULTS

No findings were identified.

EXIT MEETINGS AND DEBRIEFS

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

On July 25, 2022, the inspectors presented the integrated inspection results to Johnny Weissinger and other members of the licensee staff.

DOCUMENTS REVIEWED

Inspection Type Designation Description or Title Revision or

Procedure Date

71111.01 Miscellaneous NMP-GM-025 Site Certification for Summer Readiness 05/06/2022

Procedures 34AB-S11-001-0 Operation with Degraded System Voltage 6.1

NMP-OS-020 Station Response to Southern Company Alert Conditions 2.0

71111.04 Corrective Action Condition Reports 10813290, 10815976, 10827151, 10827885, 10828039,

Documents (CR) 10831205, 10833407, 10833509, 10833891, 10846610,

10836882, 10837465, 10837670, 10837928, 10843730,

10847419, 10847477, 10847703, 10847900, 10848137,

10855461, 10855651, 10856494, 10856598, 10857690,

10857760, 10858219, 10858261, 10858594, 10858625,

10860294, 10860715, 10860825, 10863976, 10864200,

10865105, 10867159, 10867171

Condition Reports 10772157, 10772419, 10772431, 10773100, 10773182,

(CR) 10773184, 10773973, 10774127, 10775453, 10776146,

10776824, 10776921, 10776967, 10777735, 10777750,

10777998, 10779485, 10780688, 10780774, 10781771,

10782366, 10782719, 10783605, 10783705, 10783757,

10783847, 10785204, 10787291, 10787842, 10787845,

10787846, 10788499, 10792231, 10797623, 10797740,

10802238, 10825262, 10825300, 10825444, 10826822

Drawings H-26023 and H-RCIC System P&ID Sheets 1 and 2 44.0/33.0

26024

Engineering Technical 1083597

Evaluations Evaluation (TE)

Procedures 34SO-E11-010-1 Residual Heat Removal System Ver. 46.1

34SO-E51-001-2 Reactor Core Isolation Cooing (RCIC) System 28.4

34SO-R43-001-1 Diesel Generator Standby AC System 29.4

Work Orders Work Orders 1033618, 1122157, 1144460

(SNC)

71111.05 Corrective Action Condition Reports 10872492, 10872493, 10872495, 10872496, 10872502

Documents (CR)

Corrective Action Condition Reports 10872504, 10876828, 10876857, 10876859, 10876860,

Documents (CR) 10876861, 10876884, 10876885, 10876886

Inspection Type Designation Description or Title Revision or

Procedure Date

Resulting from

Inspection

Fire Plans NMP-ES-035-Control Building 130' Elevation 1.0

019-GL02-F02

NMP-ES-035-Diesel Generator Building 1.0

019-GL02-F06

NMP-ES-035-Unit 1 Turbine Building 147' Elevation 1.0

019-GL02-F10

NMP-ES-035-FLEX Storage Building 1.0

019-GL02-F121

NMP-ES-035-U1 Reactor Building EL 158/164 1.0

019-GL02-F14

NMP-ES-035-Unit 2 Reactor Building 130-Foot Elevation 1.0

019-GL02-F30

71111.06 Procedures 52PM-Y46-001-0 Underground Pullbox Debris Removal / Inspection 10.3

Work Orders SNC1050537 Inspect Inground Pull Boxes 05/12/2022

71111.11Q Miscellaneous LT-AF-00114 CPE Design-Loss of CRD, RFPT Controller Malfunction, 1.0

Loss of Iso-Phase Bus Cooling, Loss of the 2A Drywell

Chiller, Torus Leak (Isolation), Loss of Feed Water Heating,

HPCI Steam Leak, Emergency Depressurization

71111.12 Corrective Action Condition Action 277887, 278347

Documents Reports (CAR)

Condition Reports 10878810, 10701368, 10739096, 10872526, 10652503,

(CR) 10667619, 10667792, 10676535, 10676906, 10677240,

10695910, 10696214, 10701368, 10701469, 10703008,

10703710, 10704348, 10705447, 10705879, 10707845,

10709151, 10710050, 10710051, 10710066, 10710204,

10711446, 10715762, 10720909, 10728437, 10728527,

10728620, 10731630, 10731822, 10731823, 10737213,

10737304, 10737767, 10737768, 10739096, 10739274,

10739608, 10740926, 10742383, 10747548, 10747703,

10748007, 10748522, 10749416, 10749675, 10750309,

10750330, 10751399, 10751790, 10753706, 10765811,

10770340, 10773811, 10777592, 10781434, 10788308,

Inspection Type Designation Description or Title Revision or

Procedure Date

10788382, 10788395, 10789017, 10791717, 10797494,

10797497, 10801285, 10803578, 10807374, 10808303,

10811406, 10811997, 10812018, 10815558, 10819132,

10844810, 10845027, 10845488, 10845787, 10845992,

10850496, 10851307, 10851327, 10852900, 10856928,

10872526, 10874221, 10875726

Miscellaneous EVAl-H-Y52-EDG Fuel Oil Supply 05/17/2022

05529

Work Orders Work Orders 1118161, 1124246, 1124606, 1069606,

(WO-SNC)

71111.13 Miscellaneous Hatch U1 R8 On-Line Configuration Risk Monitor Current 05/17/2022

Risk Summary Report

Hatch U1 R8 On-Line Configuration Risk Monitor Current 06/28/2022

Risk Summary Report

Hatch U1 R8 On-Line Configuration Risk Monitor Current 06/29/2022

Risk Summary Report

Procedures 52SV-FPX-005-0 Surveillance of Low Voltage Switchyard Fixed Water Spray 1.0

Systems

NMP-OS-010-002 Hatch Protected Equipment Logs 11.1

71111.15 Calculations SCNH-21-009 U1 Plant Service Water (PSW) Pumps and Restraints 1.0

Seismic Analysis

SCNH-22-001 RHRSW Pumps With Degraded Seismic Restraint 1.0

SNCH-90-079 Review of PSW Pump Seismic Analysis Report 0.0

Corrective Action Condition Report 10165289, 10872801. 10857368, 10873389, 10873390,

Documents (CR) 10874075, 10857430

Corrective Action 304318, 309195, 309199

Reports (CAR)

Engineering Technical 1103319

Evaluations Evaluation (TE)

Miscellaneous SNC Hatch Plant Service Water Pumps Upgrade

Presentation by Hydro

Procedures 34SO-T22-001-0 Secondary Containment Alignment 7.5

2PM-E11-005-1 Unit 1 RHRSW Pump and Motor Maintenance 9.9

2PM-P41-036-1 Unit 1 Plant Service Water Pump & Motor Major 10.1

Inspection Type Designation Description or Title Revision or

Procedure Date

Inspection/Overhaul

NMP-AD-003 Equipment clearance and Tagging 28.1

Work Orders Work Orders 1179371

(WO-SNC)

71111.18 Corrective Action Condition Reports 10780104, 10780120, 10780269, 10781097, 10850917,

Documents (CR) 10781093

Drawings H-23443 Wiring Diagram - Station Service Transformer 2BB Relay 17.0

Panel: 2H11-P680 and Generator No. 2Relay Panel 2H11-

P670

H-53115 500KV NBM #179756 Elementary & Wiring Diagram 2.0

Engineering Design TCC to remove 2P41F365 Internals 04/10/2021

Changes Equivalent

Change Package

SNC 1151803

NMP-ES-095-Engineering Change Worksheet for SNC1146831TCC001 1.0

003-F01

Engineering NMP-AD-008-F01 Applicability Determination for SNC1146831 13.2

Evaluations NMP-AD-010-F01 10 CFR 50.59 Screening for SNC1146831 10.3

NMP-ES-035-Fire Protection Program Impact Screening for 6.0

006-F05 SNC1146831TCC

Technical 1084335

Evaluation (TE)

Procedures NMP-ES-095-002 Temporary Configuration Change Process 2.0

Work Orders SNC1151601 Replace of Rebuild 2P41F365 MOV isolation valve for the 04/10/2021

Plant Service Water

Work Orders SNC146831, SNC1144553, SNC1146190, SNC1181071

(WO-SNC)

71111.19 Corrective Action Condition Report 10872678

Documents (CR)

Procedures 34SO-E11-010-1 Residual Heat Removal System 46.1

34SV-E11-002-1 RHR "B" Loop Valve Operability 21.6

34SV-E41-001-2 HPCI Valve Operability 13.7

34SV-E41-002-2 HPCI Pump Operability 39.2

34SV-P41-001-1 Plant Service Water Pump Operability 15.2

Inspection Type Designation Description or Title Revision or

Procedure Date

34SV-P41-001-2 Plant Service Water Pump Operability 16.3

2PM-T41-004-0 Cooling Coil Cleaning 6.3

Work Orders SNC1326397 Trouble Shooting of U2 PSW Pump 2A OVLD/Lockout relay 05/13/2022

Trip

Work Order SNC1198858 06/13/2022

(WO-SNC)

Work Order (WO-SNC426594

SNC)

Work Orders (WO 1014024, 1014012, 1014014

SNC)

71111.20 Procedures 34GO-OPS-013-1 Normal Plant Shutdown 32.6

NMP-GM-009-Restart PRB review Checklist (PRB # 2022-016) 7.0

F01

NMP-RE-008-F02 Simplified Reactivity Management Plan (RMP Title - Hatch - 2.1

Unit 1 Cycle 31 - MOC Shutdown for SRV Repair)

71111.22 Corrective Action Condition Report 10873785

Documents (CR)

Condition Report 10873631

(CR)

Condition Report 10873701

(CR)

Condition Reports 10777666, 10782701, 10793492, 10793494, 10795758,

(CR) 10808538, 10815466, 10820223, 10821061, 10823905,

10825430, 10829858, 10830677, 10836987, 10845277,

10845750, 10855236, 10855329, 10859928, 10861201,

10861202, 10862061, 10873540

Condition Reports 10879946, 10879964

(CR)

Corrective Action Condition Report 10873880, 10876581,10878631, 10873911

Documents (CR)

Resulting from

Inspection

Procedures 34IT-OPS-003-0 Security and Dry Storage Power Systems Test 13.2

34SV-C41-002-1 Standby Liquid Control Pump Operability Test 19.0

Inspection Type Designation Description or Title Revision or

Procedure Date

34SV-R43-001-1 Diesel Generator 1A Monthly Test 25.5

34SV-R43-013-2 Diesel Generator 2C 24 Month Operability Test (IST) 7.1

34SV-SUV-013-0 Breaker Alignment Checks 10.4

71114.06 Miscellaneous Emergency Preparedness Observation Form - LOCT DEP 04/06/2022

Observation

H-LT-AF-00114 CPE Design - Loss of CRD, RFPT Controller Malfunction, 1.0

Loss of Iso-Phase Bus Cooling, Loss of the 2A Drywell

Chiller, Torus Leak (Isolation), Loss of Feed Water Heating,

HPCI Steam Leak, Emergency Depressurization.

71151 Miscellaneous ESOM Logs for Unit 1 and Unit 2 Containment/Drywell

Leakage from April 1, 2021 to March 31, 2022

Procedures 64CH-SAM-025-0 Reactor Coolant Weekly (Reactor Coolant Sample Data for

Unit 1 and Unit 2 - April 1, 2022 to March 31, 2022)

13