IR 05000395/2021003

Integrated Inspection Report 05000395/2021003

ML21301A083
Person / Time
Site:	Summer
Issue date:	10/28/2021
From:	David Dumbacher Division Reactor Projects II
To:	Stoddard D Dominion Energy Co
References
IR 2021003
Download: ML21301A083 (12)

Text

October 28, 2021

SUBJECT:

VIRGIL C. SUMMER NUCLEAR STATION - INTEGRATED INSPECTION REPORT 05000395/2021003

Dear Mr. Stoddard:

On September 30, 2021, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Virgil C. Summer Nuclear Station and discussed the results of this inspection with Mr. George Lippard 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,

/RA/

David E. Dumbacher, Chief Reactor Projects Branch 3 Division of Reactor Projects

Docket No. 05000395 License No. NPF-12

Enclosure:

As stated

Inspection Report

Docket Number:

05000395

License Number:

NPF-12

Report Number:

05000395/2021003

Licensee:

Dominion Energy

Facility:

Virgil C. Summer

Location:

Jenkinsville, SC

Inspection Dates:

July 01, 2021 to September 30, 2021

Inspectors:

M. Donithan, Operations Engineer

J. Evans, Reliability and Risk Analyst

A. Goldau, Operations Engineer

J. Hamman, Senior Project Engineer

A. Nielsen, Senior Health Physicist

M. Read, Senior Resident Inspector

S. Roberts, Resident Inspector

Approved By:

David E. Dumbacher, Chief

Reactor Projects Branch 3

Division of Reactor Projects

SUMMARY

The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Virgil C. Summer, 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

Type Issue Number Title Report Section Status LER 05000395/2021-001-00 LER 2021-001-00 for Virgil C. Summer Nuclear Station (VCSNS), Unit 1, Condition Prohibited by Technical Specifications 71153 Closed

PLANT STATUS

The unit operated at or near rated thermal power for the entire 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 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, the resident inspectors performed periodic site visits each week, increasing the amount of time on-site as local COVID-19 conditions permitted.

As part of their on-site activities, resident inspectors conducted plant status activities as described in IMC 2515, Appendix D, Plant Status, and conducted routine reviews using IP

===71152, Problem Identification and Resolution, observed risk significant activities; and completed on-site portions of IPs. In addition, resident and regional baseline inspections were evaluated to determine if all or a portion of the objectives and requirements stated in the IP could be performed remotely. If the inspections could be performed remotely, they were conducted per the applicable IP. In some cases, portions of an IP were completed remotely and on-site. The inspections documented below met the objectives and requirements for completion of the IP.

71111.01 - Adverse Weather Protection

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

(1) The inspectors observed plant activities in response to a tornado warning on August 17, 2021.

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) Steam generator blowdown system following stroke time testing on July 20, 2021 (2)

'B' train chilled water loop on August 4, 2021 (3)

'B' emergency diesel generator while the 'A' emergency diesel generator was tagged out for testing on August 10, 2021

71111.05 - Fire Protection

Fire Area Walkdown and Inspection Sample (IP Section 03.01) (5 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) Intermediate building elevation 412 feet on July 9, 2021

(2) Control building elevation 425 feet July 27, 2021

(3) Control building elevation 463 feet on July 28, 2021

(4) Auxiliary building elevation 412 feet on August 24, 2021

(5) Auxiliary building elevation 388 feet on September 13, 2021

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) Service water pump house on September 8, 2021

71111.07A - Heat Sink Performance

Annual Review (IP Section 03.01) (1 Sample)

The inspectors evaluated readiness and performance of:

(1) Component cooling heat exchangers during the week August 23, 2021

71111.11B - Licensed Operator Requalification Program and Licensed Operator Performance

Licensed Operator Requalification Program (IP Section 03.04) (1 Sample)

(1) Biennial Requalification Written Examinations

The inspectors evaluated the quality of the licensed operator biennial requalification written examinations administered on July 8 and July 22, 2021.

Annual Requalification Operating Tests

The inspectors evaluated the adequacy of the facility licensees annual requalification operating test.

Administration of an Annual Requalification Operating Test

The inspectors evaluated the effectiveness of the facility licensee in administering requalification operating tests required by 10 CFR 55.59(a)(2) and that the facility licensee is effectively evaluating their licensed operators for mastery of training objectives.

Requalification Examination Security

The inspectors evaluated the ability of the facility licensee to safeguard examination material, such that the examination is not compromised.

Remedial Training and Re-examinations

The inspectors evaluated the effectiveness of remedial training conducted by the licensee, and reviewed the adequacy of re-examinations for licensed operators who did not pass a required requalification examination.

Operator License Conditions

The inspectors evaluated the licensees program for ensuring that licensed operators meet the conditions of their licenses.

Control Room Simulator

The inspectors evaluated the adequacy of the facility licensees control room simulator in modeling the actual plant, and for meeting the requirements contained in 10 CFR 55.46.

Problem Identification and Resolution

The inspectors evaluated the licensees ability to identify and resolve problems associated with licensed operator performance.

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 operations personnel during STP-136.001, Steam Generator Blowdown Valve Operability Test, on July 20, 2021

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

(1) The inspectors observed a simulator evaluation on July 14, 2021, which included a steamline break downstream of a main steam isolation valve

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) Component cooling system on August 23, 2021

(2) Emergency feedwater system on September 7, 2021

71111.13 - Maintenance Risk Assessments and Emergent Work Control

Risk Assessment and Management Sample (IP Section 03.01) (1 Sample)

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) Elevated risk during breaker replacement for the Parr Hydro offsite power source during the week of July 19, 2021

71111.15 - Operability Determinations and Functionality Assessments

Operability Determination or Functionality Assessment (IP Section 03.01) (3 Samples)

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

(1) CR-21-01909, 'B' chiller refrigerant leak, on August 11, 2021

(2) CR-21-01723, Engineered Safety Feature loading sequencer Control Panel Train B, on August 11, 2021

(3) CR-21-02492, Scaffold pole interference with closure of 'C' main steam isolation valve, on September 27, 2021

71111.18 - Plant Modifications

Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02) (1 Sample)

The inspectors evaluated the following temporary or permanent modifications:

(1) ECR-50940, Alternate power cables for spent fuel cooling pumps, on September 15, 2021

71111.19 - Post-Maintenance Testing

Post-Maintenance Test Sample (IP Section 03.01) (7 Samples)

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

(1) STP-205.003, charging and safety injection pump and valve test, following 'B' charging pump motor and valve maintenance, on July 6, 2021

(2) MTP-50585W.001, 'B' chiller replacement functional test, following chiller replacement on July 9, 2021

(3) MTP-E-50940.002, 'A' train spent fuel cooling pump alternate power testing on July 29, 2021, following installation of an alternate power supply and switch

(4) STP-121.002, steam generator power operated valve operability test, following maintenance on the solenoid air volume booster for the 'B' steam generator power operated valve, on August 18, 2021

(5) FLEX fuel oil transfer pump on August 23, 2021, following pump rebuild

(6) MTP-E-10940.002, 'B' train spent fuel pool cooling pump testing, on August 24, 2021, following installation of an alternate power supply and switch

(7) SOP-509, diesel-driven fire pump testing following engine oil change on September 15, 2021

71111.22 - Surveillance Testing

The inspectors evaluated the following surveillance tests:

Surveillance Tests (other) (IP Section 03.01)

(1) STP-121.002A, 'C' steam generator power operated relief valve operability test, on August 18, 2021

(2) STP-345.037, 'A' solid state protection system actuation logic and master relay test, on August 20, 2021

(3) STP-125.002B, 'B' emergency diesel generator operability test, on August 25, 2021

Inservice Testing (IP Section 03.01) (2 Samples)

(1) STP-136.001, steam generator blowdown valve operability test, on July 20, 2021

(2) Disassembly and inspection of service water cross-connect check valve to the 'B' emergency feedwater pump on August 3,

71124.08 - Radioactive Solid Waste Processing & Radioactive Material Handling, Storage, &

Transportation

Radioactive Material Storage (IP Section 03.01)

(1) Inspectors evaluated the licensees performance in controlling, labelling and securing radioactive materials.

Radioactive Waste System Walkdown (IP Section 03.02) (1 Sample)

(1) Inspectors walked down accessible portions of the solid radioactive waste systems and evaluated system configuration and functionality.

Waste Characterization and Classification (IP Section 03.03) (2 Samples)

The inspectors evaluated the licensees characterization and classification of radioactive waste.

(1)2019 Primary resin (2)2020 Reactor coolant filters

Shipping Records (IP Section 03.05) (4 Samples)

The inspectors evaluated the following non-excepted radioactive material shipments through a record review:

(1)19-038, Filters, Low Specific Activity (LSA)

(2)20-017, Resin, LSA (3)20-069, Resin, LSA (4)21-008, Outage equipment, surface contaminated object

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) July 1, 2020, to June 30, 2021

MS07: High Pressure Injection Systems (IP Section 02.06) (1 Sample)

(1) July 1, 2020, to June 30, 2021

MS09: Residual Heat Removal Systems (IP Section 02.08) (1 Sample)

(1) July 1, 2020, to June 30, 2021

PR01: Radiological Effluent Technical Specifications/Offsite Dose Calculation Manual Radiological Effluent Occurrences (RETS/ODCM) Radiological Effluent Occurrences Sample (IP Section 02.16) (1 Sample)

(1) May 1, 2020 through July 30, 2021

71152 - Problem Identification and Resolution

Annual Follow-up of Selected Issues (IP Section 02.03) (1 Sample)

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

(1) CR-21-01783, equipment building diesel generator failed to start, completed reviewed on August 31, 2021

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 05000395/2021-001-00, Condition Prohibited by Technical Specifications (ADAMS Accession No. ML21238A158). The inspectors determined that it was not reasonable to foresee or correct the cause discussed in the LER therefore no performance deficiency was identified. The inspectors did not identify a violation of NRC requirements.

INSPECTION RESULTS

No findings were identified.

EXIT MEETINGS AND DEBRIEFS

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

• On September 30, 2021, the inspectors presented the integrated inspection results to Mr. George Lippard and other members of the licensee staff.

• On August 5, 2021, the inspectors presented the radiation protection inspection results to Mr. G. Lippard and other members of the licensee staff.

DOCUMENTS REVIEWED

Inspection

Procedure

Type

Designation

Description or Title

Revision or

Date

71124.08

Corrective Action

Documents

Resulting from

Inspection

CR 21-0058

Miscellaneous

MEMO-FPA-

210019-0-0

Monthly Fuel Reliability Indicator

July 2021

Procedures

VCS-HPP-0703

Shipping Radioactive Material

Rev. 3

VCS-HPP-0717

Sample Collection, Preparation, and Analysis Techniques for

Assuring Compliance with 10 CFR 61

Rev. 0,

Change B

71153

Engineering

Evaluations

ECR 50585W

'B' Chiller Project

Miscellaneous

SUPP-0798582

Paragon Supplemental Calculation to Stress Report for

ASME Section III, Division 1, Class 3 Chiller Assembly

Work Orders

1708075-212

Fabrication and installation of chiller supports

6/26/2021