IR 05000390/2025010
| ML25077A071 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 03/18/2025 |
| From: | Daniel Bacon NRC/RGN-II/DORS/EB2 |
| To: | Erb D Tennessee Valley Authority |
| References | |
| IR 2025010 | |
| Download: ML25077A071 (1) | |
Text
SUBJECT:
WATTS BAR NUCLEAR PLANT - FIRE PROTECTION TEAM INSPECTION REPORT 05000390/2025010 AND 05000391/2025010
Dear Delson C. Erb:
On February 27, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Watts Bar Nuclear Plant. On February 27, 2025, the NRC inspectors discussed the results of this inspection with William C. Reneau 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, Daniel M. Bacon, Branch Chief Engineering Branch 2 Division of Operating Reactor Safety Docket Nos. 05000390 and 05000391 License Nos. NPF-90 and NPF-96
Enclosure:
As stated
Inspection Report
Docket Numbers:
05000390 and 05000391
License Numbers:
Report Numbers:
05000390/2025010 and 05000391/2025010
Enterprise Identifier:
I-2025-010-0042
Licensee:
Tennessee Valley Authority
Facility:
Watts Bar Nuclear Plant
Location:
Spring City, TN
Inspection Dates:
February 10, 2025 to February 27, 2025
Inspectors:
P. Braaten, Senior Reactor Inspector
M. Hagen, Reactor Inspector
W. Monk, Senior Reactor Inspector
Approved By:
Daniel M. Bacon, Chief
Engineering Branch 2
Division of Operating Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a fire protection team inspection at Watts Bar Nuclear Plant, in accordance with the Reactor Oversight Process. The Reactor Oversight Process is the NRCs program for overseeing the safe operation of commercial nuclear power reactors. Refer to https://www.nrc.gov/reactors/operating/oversight.html for more information.
List of Findings and Violations
No findings or violations of more than minor significance were identified.
Additional Tracking Items
None.
INSPECTION SCOPES
Inspections were conducted using the appropriate portions of the inspection procedures (IPs) in effect at the beginning of the inspection unless otherwise noted. Currently approved IPs with their attached revision histories are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. Samples were declared complete when the IP requirements most appropriate to the inspection activity were met consistent with Inspection Manual Chapter (IMC) 2515, Light-Water Reactor Inspection Program - Operations Phase. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.
REACTOR SAFETY
71111.21N.05 - Fire Protection Team Inspection (FPTI) Structures, Systems, and Components (SSCs) Credited for Fire Prevention, Detection, Suppression, or Post-Fire Safe Shutdown Review (IP Section 03.01)
The inspectors verified that components and/or systems will function as required to support the credited functions stated for each sample. Additional inspection considerations are located in the fire hazards analysis (FHA) or safe shutdown analysis (SSA).
(1)a. Review deficiencies or open fire protection impairments for the selected system, including any temporary modifications, operator workarounds, or compensatory measures.
b. Verify that operator actions can be accomplished as assumed in the licensees FHA, or as assumed in the licensees fire probabilistic risk assessment (FPRA)analysis and SSA.
c. Review repetitive or similar maintenance work requests which could be an indicator of a design deficiency and could affect the ability of the components to perform their functions, when needed.
d. Ensure that post maintenance and/or surveillance activities are performed as scheduled.
e. Perform a walkdown inspection to identify equipment alignment discrepancies.
Inspect for deficient conditions such as corrosion, missing fasteners, cracks, and degraded insulation.
f. Ensure the selected SSCs that are subject to aging management review (AMR)pursuant to 10 CFR Part 54 are being managed for aging (e.g., loss of material, cracking, reduction of heat transfer) in accordance with appropriate aging management programs. Verify that the licensees aging management program activities (such as, Fuel Oil Analysis or Selective Leaching Aging Management Program) associated with FP equipment are being implemented.
g. If a review of operating experience issues will be completed for the selected inspection sample, verify that the licensee adequately reviewed and dispositioned the operating experience in accordance with their processes.
1. Auxiliary Feedwater System
2. Emergency Raw Cooling Water
3. CO2 System in Computer Rooms
4. CO2 System in Diesel Generator Building
Fire Protection Program Administrative Controls (IP Section 03.02) (1 Sample)
The inspectors verified that the selected control or process is implemented in accordance with the licensees current licensing basis. If applicable, ensure that the licensees FPP contains adequate procedures to implement the selected administrative control. Verify that the selected administrative control meets the requirements of all committed industry standards.
(1)
1. Transient Combustible Controls and Hot Work
Fire Protection Program Changes/Modifications (IP Section 03.03) (1 Sample)
The inspectors verified the following:
a. Changes to the approved FPP do not constitute an adverse effect on the ability to safely shutdown.
b. The adequacy of the design modification, if applicable.
c. Assumptions and performance capability stated in the SSA have not been degraded through changes or modifications.
d. The FPP documents, such as the Updated Final Safety Analysis Report, fire protection report, FHA, and SSA were updated consistent with the FPP or design change.
e. Post-fire SSD operating procedures, such as abnormal operating procedures, affected by the modification were updated.
(1)
1. WB-23-034
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On February 27, 2025, the inspectors presented the fire protection team inspection results to William C. Reneau and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
EPMTHJ102192
CO2 Fire Protection System Required Quantity
10/17/2009
NDQ0009992024
Fire Protection Equipment Surveillance Optimization
Evaluations
Rev. 0
Calculations
SDD-N3-39-4002
CO2 STORAGE, FIRE PROTECTION, AND PURGING
Rev. 13
CR 1523621
I was placed into a hazardous environment without my
knowledge
07/10/2019
CR 1799637
Broken Thermal Detector Base at DGB - 0-TS-13-122B
09/19/2022
Corrective Action
Documents
CR 1929672
Fleet initiative to Implement Fire Protection Equipment
Surveillance Optimization
09/02/2024
CR 1991914
25 FPTI - O-FOR-39-2 Frequency Extension
2/13/2025
Corrective Action
Documents
Resulting from
Inspection
CR 1995309
NRC FPTI Minor Violation on 0-FOR-39-2
2/27/2025
Drawings
WBN-0-47W240-
6-CC
Fire Protection Compartmentation - Fire Cells Plan EL
2 & 708
2/03/2015
Engineering
Changes
WBN-23-034
Disconnect feeder cables in fire zones which support
Diesel Auxiliary Boards 2A1-A and 2A2-A
Rev. 0
WBN Fire
Protection Report
PART II
FIRE PROTECTION PLAN
Rev. 64
Miscellaneous
WBN Fire
Protection Report
PART VI
FIRE HAZARD ANALYSIS
Rev. 64
0-AOI-30.1
Plant Fires
Rev. 12
0-AOI-30.2
Fire Safe Shutdown
Rev. 06
0-AOI-30.2 C.21
Fire Safe Shutdown Room 757-A3
Rev. 0
0-AOI-30.2 C.22
Fire Safe Shutdown Room 757-A4
Rev. 0
0-AOI-30.2 C.49
Fire Safe Shutdown Room 713-A6 or 713-A8
Rev. 03
0-AOI-30.2 C.5
Fire Safe Shutdown Room 772-A3
Rev. 0
0-AOI-30.2 C.53
Fire Safe Shutdown Room 692-A1A (West)
Rev. 00
0-AOI-30.2 C.6
Fire Safe Shutdown Room 772-A4
Rev. 01
71111.21N.05
Procedures
0-AOI-30.2 C.69
Fire Safe Shutdown Room Control Building
Rev. 13
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
0-FOR-39-2
Month CO2 Fire Protection Inspection and Test for
Powerhouse Areas
Rev. 31
0-FOR-39-2
Month CO2 Fire Protection Inspection and Test for
Powerhouse Areas
Rev. 33
0-FOR-39-3-A
Month CO2 Fire Protection Inspection and Test for
DGB - Train A Areas
Rev. 18
0-FOR-39-3-A
Month CO2 Fire Protection Inspection and Test for
DGB - Train A Areas
Rev. 19
0-FOR-39-3-B
Month CO2 Fire Protection Inspection and Test for
DGB - Train B Areas
Rev. 17
0-FOR-39-3-B
Month CO2 Fire Protection Inspection and Test for
DGB - Train B Areas
Rev. 18
0-FOR-39-4
Quarterly CO2 Flow Path Verifications
Rev. 7
0-FOR-39-4
Month CO2 Flow Path Verifications
Rev. 8
0-SOI-24.01
Raw Cooling Water System
Rev. 32
0-SOI-39.01
POWERHOUSE CO2
Rev. 3
0-SOI-39.02
Rev. 0
NPG-SPP-18.4.7
Control of Transient Combustibles
Rev. 20
NPG-SPP-18.4.8
Control of Ignition Sources (Hot Work)
Rev. 15
0-FOR-39-3-B 18 MONTH CO2 FIRE PROTECTION
INSPECTION AND TEST FOR DGB - TRAIN B AREAS
10/15/2021
0-FOR-39-2 18 MONTH CO2 FIRE PROTECTION
INSPECTION AND TEST FOR POWERHOUSE AREAS
09/29/2022
0-FOR-39-3-B 18 MONTH CO2 FIRE PROTECTION
INSPECTION AND TEST FOR DGB - TRAIN B AREAS
08/03/2023
0-FOR-39-3-A 18 MONTH CO2 FIRE PROTECTION
INSPECTION AND TEST FOR DGB - TRAIN A AREAS
07/06/2023
0-FOR-39-3-A 18 MONTH CO2 FIRE PROTECTION
INSPECTION AND TEST FOR DGB - TRAIN A AREAS
2/23/2022
0-FOR-39-2 18 MONTH CO2 FIRE PROTECTION
INSPECTION AND TEST FOR POWERHOUSE AREAS
07/30/2024
Work Orders
0-FOR-39-3-B 18 MONTH CO2 FIRE PROTECTION
INSPECTION AND TEST FOR DGB - TRAIN B AREAS
09/12/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
0-FOR-39-4 QUARTERLY CO2 FLOW PATH
VERIFICATIONS
06/10/2024
0-FOR-39-4 QUARTERLY CO2 FLOW PATH
VERIFICATIONS
09/08/2024