IR 05000275/2024003
| ML24298A035 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 10/30/2024 |
| From: | Patricia Vossmar NRC/RGN-IV/DORS/PBA |
| To: | Peck A Pacific Gas & Electric Co |
| References | |
| IR 2024003, IR 2024001 | |
| Download: ML24298A035 (1) | |
Text
October 30, 2024
SUBJECT:
DIABLO CANYON POWER PLANT, UNITS 1 AND 2 - INTEGRATED INSPECTION REPORT 05000275/2024003 AND 05000323/2024003 AND INDEPENDENT SPENT FUEL STORAGE INSTALLATION REPORT 07200026/2024001
Dear Adam Peck:
On September 30, 2024, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Diablo Canyon Power Plant, Units 1 and 2. On October 3, 2024, the NRC inspectors discussed the results of this inspection with Maureen Zawalick, Vice President Business and Technical Services, 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, Patricia J. Vossmar, Chief Reactor Projects Branch A Division of Operating Reactor Safety Docket Nos. 05000275, 05000323, and 07200026 License Nos. DPR-80, DPR-82, and SNM-2511
Enclosure:
As stated
Inspection Report
Docket Nos:
05000275, 05000323, and 07200026 License Nos:
DPR-80, DPR-82, and SNM-2511 Report Nos:
05000275/2024003, 05000323/2024003 and 07200026/2024001 Enterprise Identifier:
I-2024-003-0008 and I-2024-001-0014 Licensee:
Pacific Gas and Electric Company Facility:
Diablo Canyon Power Plant, Units 1 and 2 and ISFSI Location:
Avila Beach, CA Inspection Dates:
July 1, 2024, to September 30, 2024 Inspectors:
B. Baca, Health Physicist G. Birkemeier, Resident Inspector L. Brookhart, Senior Spent Fuel Storage Inspector L. Carson, Senior Health Physicist K. Clayton, Senior Operations Engineer J. Copeland, Reactor Inspector B. Edwards, Health Physicist J. Freeman, Spent Fuel Storage Inspector N. Garcia, Resident Inspector C. Harrington, Operations Engineer M. Hayes, Senior Resident Inspector S. Hedger, Senior Emergency Preparedness Inspector N. Hernandez, Senior Operations Engineer Z. Hollcraft, Senior Reactor Operations Engineer S. Lichvar, Technical Assistant J. O'Donnell, Senior Health Physicist C. Smith, Senior Reactor Inspector D. You, Operations Engineer Approved By:
Patricia J. Vossmar, Chief Reactor Projects Branch A Division of Operating Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Diablo Canyon Power Plant, Units 1 and 2, 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 rated thermal power. On August 31, 2024, the unit reduced power to 47 percent to support condenser cleaning. The unit returned to full power on September 2, 2024. On September 14, 2024, the unit reduced power to 50 percent to support condenser cleaning. The unit returned to full power on September 16, 2024. On September 28, 2024, the unit reduced power to 45 percent to support condenser cleaning.
On September 30, 2024, the unit returned to full power.
Unit 2 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 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.
REACTOR SAFETY
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 seasonal hot temperatures for the following systems:
- 4 kV switchgear, cable spreading room ventilation, main transformers and auxiliary transformers on July 9, 2024
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 auxiliary feedwater trains 1-2 and 1-3 on July 24, 2024
- (2) Unit 1 component cooling water pump 1-3 on September 25, 2024
- (3) Unit 1 residual heat removal pump 1-1 on September 26, 2024
Complete Walkdown Sample (IP Section 03.02) (1 Sample)
- (1) The inspectors evaluated system configurations during a complete walkdown of the Unit 1 125 Vdc battery 12 system on July 15, 2024.
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 2 radiological control area, 73-foot elevation, on July 23, 2024 (2)cable spreading room, 128-foot elevation, on July 25, 2024
- (3) Unit 1 and 2 radiological control area, 54-foot and 64-foot elevations, on September 16, 2024
- (4) Unit 1 radiological control area, 73-foot elevation, on September 17, 2024
- (5) Unit 1 and 2 radiological control area, 85-foot elevation, on September 18, 2024
- (6) Unit 1 radiological control area, 115-foot elevation, on September 23, 2024
71111.06 - Flood Protection Measures
Flooding Sample (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated internal flooding mitigation protections in the:
- intake structure and auxiliary saltwater pump vaults on September 30, 2024
71111.07A - Heat Exchanger/Sink Performance
Annual Review (IP Section 03.01) (2 Samples)
The inspectors evaluated readiness and performance of:
- (1) Unit 1 component cooling water 1-1 and 1-2 heat exchangers on September 16, 2024
- (2) Unit 2 emergency diesel generator 2-2 jacket water cooling radiator on September 16, 2024
71111.11Q - Licensed Operator Requalification Program and Licensed Operator Performance
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
- (1) The inspectors observed and evaluated a crew of licensed operators during simulator training on August 6, 2024.
71111.12 - Maintenance Effectiveness
Maintenance Effectiveness (IP Section 03.01) (6 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 2 auxiliary saltwater train 2-2 50.65(a)(1) determination on August 2, 2024 (2)intake structure on August 12, 2024 (3)anticipated transient without scram mitigating system actuation circuitry on August 14, 2024
- (4) Unit 2 125 Vdc on August 16, 2024
- (5) Unit 1 condenser fouling on August 22, 2024
- (6) Unit 2 auxiliary saltwater pump 2-2 motor replacement on August 22, 2024
71111.13 - Maintenance Risk Assessments and Emergent Work Control
Risk Assessment and Management Sample (IP Section 03.01) (2 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 2 auxiliary saltwater pump 2-2 motor replacement on August 19, 2024
- (2) Unit 1 50 percent downpower for condenser repairs on August 31, 2024
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 03.01) (4 Samples)
The inspectors evaluated the licensee's justifications and actions associated with the following operability determinations and functionality assessments:
- (1) Unit 1 unable to raise pressure in safety injection accumulators on July 29, 2024
- (2) Units 1 and 2 degraded pull box for auxiliary saltwater cross tie valve on August 8, 2024
- (3) Unit 2 auxiliary building ventilation exhaust fan E-1 running amps above nameplate on August 20, 2024
- (4) Unit 1 atmospheric dump valve PCV-19 opens faster than action low value on September 4, 2024
71111.24 - Testing and Maintenance of Equipment Important to Risk
The inspectors evaluated the following testing and maintenance activities to verify system operability and/or functionality:
Post-Maintenance Testing (PMT) (IP Section 03.01) (8 Samples)
- (1) Unit 2 line 1140 replacement on July 22, 2024
- (2) Unit 2 residual heat removal valve RHR-V-8702 replacement on July 22, 2024
- (3) Unit 2 centrifugal charging pump 2-2 return to service following maintenance on July 23, 2024
- (4) Unit 1 auxiliary feedwater pump 1-1 return to service following relief valve replacement on July 25, 2024
- (5) Unit 1 auxiliary building ventilation supply fan S-32 return to service from planned maintenance on July 29, 2024
- (6) Unit 2 auxiliary building ventilation supply fan S-34 return to service from unplanned maintenance on July 29, 2024
- (7) Units 1 and 2 containment spray 1-1 and 2-1 return to service following maintenance on August 5, 2024
- (8) Unit 2 auxiliary saltwater pump 2-2 following motor replacement on August 27, 2024
Surveillance Testing (IP Section 03.01) (1 Sample)
- (1) Unit 2 emergency diesel generator 2-1 monthly surveillance test on August 8, 2024
Inservice Testing (IST) (IP Section 03.01) (1 Sample)
- (1) Unit 2 auxiliary feedwater pump 2-2 testing on April 27, 2024
Reactor Coolant System Leakage Detection Testing (IP Section 03.01) (1 Sample)
- (1) Unit 1 reactor coolant system leakage calculation on August 13, 2024
Diverse and Flexible Coping Strategies (FLEX) Testing (IP Section 03.02) (1 Sample)
(1)raw water reservoir supply pump 1 on July 10, 2024
71114.01 - Exercise Evaluation
Inspection Review (IP Section 02.01-02.11) (1 Sample)
- (1) The inspectors evaluated the biennial emergency plan exercise conducted on July 31, 2024. The exercise scenario simulated a reactor coolant system leak which degraded to the point where safety injection actuation was necessary. This was followed by a loss of power to two reactor coolant pumps; a temperature monitoring system train failure; a small break loss of coolant accident; and electrical system failures which limited use of safety buses to one train. A simulated radiological release occurred via a containment penetration failure, including loss of containment spray capability. Changing meteorological conditions resulted in changes over time to the protective action recommendations.
71114.04 - Emergency Action Level and Emergency Plan Changes
Inspection Review (IP Section 02.01-02.03) (1 Sample)
- (1) The inspectors evaluated the following submitted Emergency Plan changes:
- Diablo Canyon Power Plant Emergency Plan, appendices E, and G, revision 5.00, with implementing procedure changes (notified December 13, 2023)
- Diablo Canyon Power Plant Emergency Plan, sections 2, 3, 10, appendix A (revision 5.00); section 4 (revision 5.02) (notified July 3, 2024)
Several screenings and evaluations associated with the 10 CFR 50.54(q) emergency plan change process were reviewed as well. These evaluations do not constitute NRC approval.
71114.06 - Drill Evaluation
Additional Drill and/or Training Evolution (1 Sample)
The inspectors evaluated:
- (1) The inspectors evaluated a tabletop emergency preparedness drill on August 29,
RADIATION SAFETY
71124.05 - Radiation Monitoring Instrumentation
Walkdowns and Observations (IP Section 03.01) (8 Samples)
The inspectors evaluated the following radiation detection instrumentation during plant walkdowns:
(1)115-foot elevation, South Gate frisker, Ludlum 177, 01.14.030 (2)laundry building exhaust gooseneck air monitor, 4.48.002
- (3) Unit 2 main steam monitor, 2-RE-73
- (4) Unit 2 containment atmosphere air monitor, 2-RE-11
- (5) Unit 1 and Unit 2, (shared monitor) auxiliary control room area radiation monitor, RE-10
- (6) Technical Support Center (TSC) area radiation monitor, RE-60
- (7) TSC box air sampler, 04.40.45
- (8) TSC continuous air monitor, 04.36.010
Calibration and Testing Program (IP Section 03.02) (13 Samples)
The inspectors evaluated the calibration and testing of the following radiation detection instruments:
- (1) Tri Carb 2910TR, liquid scintillation counter, LSC-1
- (2) Mirion Lynx, gamma spectroscopy, Lynx-02
- (3) Helgeson HPGe Bed, whole body counter, 200925016
- (4) Mirion FastScan, whole body counter, 03018782
- (5) Mirion Telepole, 03.42.011
- (6) Unit 1 containment high range monitor, RM-30
- (7) Unit 2 containment purge exhaust monitor, 2-RE-44A
- (8) Unit 2 containment purge exhaust monitor, 2-RE-44B
- (9) Unit 2 steam generator blowdown tank monitor, 2-RM-23
- (10) Unit 1 spent fuel pool area radiation monitor, 1-RM-58
- (11) Unit 2 spent fuel pool area radiation monitor, 2-RM-28
- (12) Unit 1 control room vent radiation monitor, 1-RE-25
- (13) Unit 2 control room vent radiation monitor, 2-RE26 Effluent Monitoring Calibration and Testing Program Sample (IP Section 03.03) (2 Samples)
The inspectors evaluated the calibration and maintenance of the following radioactive effluent monitoring and measurement instrumentation:
- (1) Unit 2 115-foot elevation penetration room Canberra air monitor, 04.16.002
- (2) Unit 1 115-foot elevation penetration room Canberra air monitor, 04.16.002
71124.06 - Radioactive Gaseous and Liquid Effluent Treatment
Walkdowns and Observations (IP Section 03.01) (5 Samples)
The inspectors evaluated the following radioactive effluent systems during walkdowns:
- (1) Units 1 and 2 fuel building high efficiency particulate effluent ventilation systems
- (2) Units 1 and 2 auxiliary building effluent and ventilation sampling system
- (3) Unit 2 process waste receiver tank and liquid radwaste treatment system
- (4) Units 1 and 2 containment hydrogen purge system
- (5) Units 1 and 2 plant and turbine building effluent ventilation and sampling systems
Sampling and Analysis (IP Section 03.02) (3 Samples)
Inspectors evaluated the following effluent samples, sampling processes and compensatory samples:
- (1) Units 1 and 2, laundry and liquid radioactive waste (LRW) batch process gamma isotopic and tritium sampling dated August 13, 2024
- (2) Unit 2 routine plant vent exhaust gamma isotopic, particulate and iodine filter air samples, and tritium sampling dated August 15, 2024
- (3) Unit 2 LRW process waste receiver tank gamma isotopic and tritium sampling dated August 14, 2024
Dose Calculations (IP Section 03.03) (4 Samples)
The inspectors evaluated the following dose calculations:
- (1) Unit 1 liquid effluent discharge permit, L-20210324-040-B
- (2) Unit 1 plant vent discharge permits, 4th quarter 2022: G-2022-0286, 0287, 0302, 0318, and 0327
- (3) Unit 2 plant vent discharge permit, G-2024-0209, dated July 25, 2024
- (4) Units 1 and 2 liquid radwaste batch discharge, process waste receiver tank permit, L-2024-0511, dated August 15, 2024 Abnormal Discharges (IP Section 03.04)
The inspectors evaluated the inspection period and identified no abnormal discharges to review.
71124.07 - Radiological Environmental Monitoring Program
Environmental Monitoring Equipment and Sampling (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated environmental monitoring equipment and observed collection of environmental samples.
Radiological Environmental Monitoring Program (IP Section 03.02) (1 Sample)
- (1) The inspectors evaluated the implementation of the licensees radiological environmental monitoring program.
GPI Implementation (IP Section 03.03) (1 Sample)
- (1) The inspectors evaluated the licensees implementation of the Groundwater Protection Initiative (GPI) program to identify incomplete or discontinued program elements.
71124.08 - Radioactive Solid Waste Processing & Radioactive Material Handling, Storage, &
Transportation
Radioactive Material Storage (IP Section 03.01)
The inspectors evaluated the licensees performance in controlling, labeling, and securing the following radioactive materials:
(1)radwaste storage building, 115-foot elevation - vaults and bays (2)auxiliary building, 64-foot/100-foot/115-foot elevations - tanks. demineralizers, and filters (3)turbine building mezzanine, 119-foot elevation - portable instrument calibration laboratory
Radioactive Waste System Walkdown (IP Section 03.02) (3 Samples)
The inspectors walked down the following accessible portions of the solid radioactive waste systems and evaluated system configuration and functionality:
- (1) Units 1 and 2 dry active waste
- (2) Units 1 and 2 mechanical filters
- (3) Units 1 and 2 ion exchange resin
Waste Characterization and Classification (IP Section 03.03) (3 Samples)
The inspectors evaluated the following characterization and classification of radioactive waste:
(1)2022 and 2023 dry active waste (2)2022 and 2023 spent cartridge filters (3)2022 and 2023 spent ion exchange and filter media Shipment Preparation (IP Section 03.04)
The shipment observation was completed in a previous inspection in April 2024.
Shipping Records (IP Section 03.05) (5 Samples)
The inspectors evaluated the following non-excepted radioactive material shipments through a record review:
- (1) RWS-22-001 (SR-2172-0032), shipped dewatered resin (LSA-II) in a metal liner (21-J-001) on July 19, 2022
- (2) RWS-23-001 (SR-2172-0034), shipped dewatered resin (Type-B) in a metal liner (22-R-001) on January 27, 2023
- (3) RWS-23-002 (SR-2172-0035), shipped cement encapsulated mechanical filters (LSA-II) in a metal liner (21-F-001) on April 4, 2023
- (4) RWS-24-001 (SRM1137002), shipped dewatered resin (LSA-II) in a metal liner (22-J-001) on February 27, 2024
- (5) RWS-24-002 (SRM11370003), shipped dewatered resin (LSA-II) in a metal liner (23-F-001) on June 18,
OTHER ACTIVITIES - BASELINE
===71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:
MS08: Heat Removal Systems (IP Section 02.07)===
- (1) Unit 1 (July 1, 2023, through June 30, 2024)
- (2) Unit 2 (July 1, 2023, through June 30, 2024)
MS09: Residual Heat Removal Systems (IP Section 02.08) (2 Samples)
- (1) Unit 1 (July 1, 2023, through June 30, 2024)
- (2) Unit 2 (July 1, 2023, through June 30, 2024)
MS10: Cooling Water Support Systems (IP Section 02.09) (2 Samples)
- (1) Unit 1 (July 1, 2023, through June 30, 2024)
- (2) Unit 2 (July 1, 2023, through June 30, 2024)
EP01: Drill/Exercise Performance (DEP) Sample (IP Section 02.12) (1 Sample)
- (1) July 1, 2023, through June 30, 2024 EP02: Emergency Response Organization (ERO) Drill Participation (IP Section 02.13) (1 Sample)
- (1) July 1, 2023, through June 30, 2024 EP03: Alert And Notification System (ANS) Reliability Sample (IP Section 02.14) (1 Sample)
- (1) July 1, 2023, through June 30,
OTHER ACTIVITIES
- TEMPORARY INSTRUCTIONS, INFREQUENT AND ABNORMAL
===60855 - Operation Of An ISFSI The inspectors performed a review of the licensees independent spent fuel storage installation (ISFSI) activities to verify compliance with requirements of the site-specific License SNM-2511, License Amendment 5, and the Diablo Canyon ISFSI Final Safety Analysis Report (FSAR),revision 10. The inspectors reviewed selected procedures, corrective action reports, and records to verify ISFSI operations were compliant with the site-specific technical specifications, requirements in the FSAR, and NRC regulations.
Operation Of An ISFSI===
- (1) The inspectors evaluated the licensees dry cask storage operations, from July 29 through August 2, 2024, during an on-site inspection. The Diablo Canyon ISFSI consisted of seven concrete pads for a total area of 49,980 square feet. Each pad was designed to hold 20 Holtec International HI-STORM 100SA storage casks which are securely anchored to steel embedment plates in the concrete. At the time of the inspection, the ISFSI contained 59 storage casks (out of 140 total possible) loaded with multi-purpose canisters, each with 32 spent fuel assemblies (MPC-32) and the licensee was in the process of loading and processing the 60th canister.
During the on-site inspection, the inspectors evaluated and observed the following activities:
- walk-down of the ISFSI pad and heavy haul path
- fuel loading operations
- heavy load lifts using the cask handling crane to remove the transfer cask with the loaded canister from spend fuel pool to the canister processing area
- processing of the spent nuclear fuel for storage, including bulk water removal, forced helium dehydration, and helium backfill operations
- canister closure welding operations, non-destructive examinations, and canister helium leak testing
- heavy load lifts using the cask handling crane to remove the transfer cask with the loaded canister from the canister processing area to the cask transporter
- transportation of the 60th canister on the vertical cask transporter from the spent fuel building to the ISFSI using the cask transporter
- heavy load lifts to transfer the canister from the transfer cask to the HI-STORM The inspectors reviewed and evaluated the following documentation during the inspection:
- fuel contents for the canisters loaded since the last NRC ISFSI inspection, the inspectors reviewed the contents of casks 59-60 against the license's technical specifications for approved contents
- radiation surveys for dose at the owner-controlled boundary to verify compliance with the requirements of 10 CFR 72.104 for calendar years 2021, 2022, and 2023
- selected ISFSI related condition reports (CRs) issued since the last NRC ISFSI inspection (January 2021)
- quality assurance (QA) program implementation, including recent QA audits, surveillances, receipt inspection, and quality control activities related to ISFSI operations
- compliance to technical specifications for operational surveillance activities and FSAR required annual maintenance activities
- documentation of annual maintenance activities for the sites cask handling crane and vertical cask transporter
- selected licensee design changes and program changes to the ISFSI performed under the site's 10 CFR 72.48 program
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On August 1, 2024, the inspectors presented the independent spent fuel storage installation inspection results to Adam Peck, Acting Senior Vice President, Generation and Chief Nuclear Officer, and other members of the licensee staff.
- On August 21, 2024, the inspectors presented the public radiation safety inspection results to Adam Peck, Acting Senior Vice President, Generation and Chief Nuclear Officer, and other members of the licensee staff.
- On October 3, 2024, the inspectors presented the emergency preparedness exercise inspection results to Maureen Zawalick, Vice President, Business and Technical Services and other members of the licensee staff.
- On October 3, 2024, the inspectors presented the integrated inspection results to Maureen Zawalick, Vice President Business and Technical Services, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
60855
Corrective Action
Documents
Notifications 1-1-
21 to 8-1-2024
List of Corrective Action Reports Generated since Last
NRC ISFSI Inspection
60855
Corrective Action
Documents
Resulting from
Inspection
249057
ISFSI Lifts Design and Licensing Review Regarding
Heavy Lifts of Overpack Lid and Mating Device
60855
Engineering
Evaluations
Cask 08-01_U1
Fuel Selection Packet for Cask 08-01
60855
Engineering
Evaluations
Cask 08-02_U1
Fuel selection packet for Cask 08-02
60855
Miscellaneous
160407, Amendment
No. 5
Amendment No. 5 To Materials License No. SNM-2511
For The Diablo Canyon Independent Spent Fuel Storage
Installation
60855
Miscellaneous
23-IA-09 2023
ISFSI and Fuel
Management Audit
23 ISFSI and Fuel Management Audit Report
60855
Miscellaneous
DIL-23-011 ISFSI
Materials License No. SNM-2511, Docket No. 72-26
Diablo Canyon Independent Spent Fuel Storage
Installation Biennial Submittal of Diablo Canyon
Independent Spent Fuel Storage Installation Updated
Final Safety Analysis Report
60855
Miscellaneous
Response-RFI-009
List of ISFSI Related Modifications/72.48 Screenings
60855
Procedures
23 FHB Crane
Annual PM
Fuel Handing Building Overhead Crane PM Required by
ASME B30.2
60855
Procedures
STP_I-1-Au1R145
Routine Shift Checks Required by Licenses - Vent
Surveillances
145
60855
Radiation
Surveys
87085 ISFSI Pad
Annual
Annual Survey of ISFSI Pad Area
Procedures
AD7.ID20
Summer Peak Period Readiness
Procedures
CP M-16
Severe Weather
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Corrective Action
Documents
Notifications
51151588, 51205737, 51223174
Drawings
106710-2
Residual Heat Removal System
Drawings
106714-2
Component Cooling Water Pumps, Heat Exchanger &
Surge Tank
Drawings
437639
Unit 1, Electrical Schematic Diagram, 125 Volt DC
System
Miscellaneous
106703
P&ID of Unit 1 Auxiliary Feedwater System
Miscellaneous
S-67 DOC
Design Criteria Memorandum S67 125V and 250V DC
System
Procedures
OP B-2:I
RHR System Alignment Verification for Plant Startup
Procedures
OP D-1:I
Auxiliary Feedwater System - Make Available
Procedures
OP D-1:II
Auxiliary Feedwater System - Alignment Verification for
Plant Startup
Procedures
OP F-2:VI
CCW System Alignment Verification for Plant Startup
Work Orders
WO 64199950, 64225865, 64248751, 64278695, 64282582,
285825, 64292703, 64293954, 64295363
Drawings
111805-10
Radiological Control Area (RCA) Elev. 85'
Drawings
111805-14
Radiological Control Area (RCA) & H Block Elev. 115'
Drawings
111805-6
Radiological Control Area (RCA) Elev. 54' & 64'
Drawings
111805-8
Radiological Control Area (RCA) Elev. 73'
Fire Plans
111805-26
H Block Elevation 128', 154', & 164'
Calculations
Intake Structure Water Tight Doors
01/30/1982
Corrective Action
Documents
Notifications
51164470, 51164522, 51220638, 51220692
Miscellaneous
RPE Number: 8000000434, Part: 3, Version: 0, PIMS
Legacy No: C-1001
09/27/2018
Miscellaneous
Specification No.
26
Specification for Furnishing and Developing of Intake
Structure Watertight Doors for Units 1 and 2
10/15/1970
Work Orders
WO 6015286, 6050595, 6426621-0100, 60147661,
60152585, 60157766, 64147172, 64148027, 64257992-
0010, 64257992-0020, 64257992-0030, 64257992-0040,
258005-0020, 64258005-0030, 64258005-0040,
264530-0100, 64264935, 64265025-0100, 64265026-
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
0100, 64271131, 64271639, 64274887, 64275888,
277421, 64278931-0010, 64278931-0020, 64278931-
0300, 64278931-0400, 64278952-0010, 64278952-0020,
278952-0030, 64278952-0040, 64286552-0100,
290475, 64290508
Engineering
Evaluations
20DC-23.22
DCPP CCW 1-1 and 1-2 Heat Exchanger Test
2/27/2023
Work Orders
201059
Procedures
TQ2.DC15
Licensed Operator Annual/Biennial Exam Development
and Administration
Procedures
TQ2.DC3
Licensed Operator Continuing Training Program
Procedures
TQ2.ID4
Training Program Implementation
and 57
Corrective Action
Documents
Notifications
50505451, 50505452, 50505453, 50505454, 51057902,
201169, 51225736, 51230333, 51237786, 51240081,
249401
Miscellaneous
CMR-2.5
Maintenance Rule Monitoring Per 10CFR50.65, Intake
Structure and Intake Control Building
Miscellaneous
PC-17B-01
Units 1&2 ASW Maintenance Rule Performance Criteria
Worksheet
Miscellaneous
PC-35-01
Units 1&2 AMSAC Maintenance Rule Performance
Criteria Worksheet
Miscellaneous
Report #
VL_22005_041322
Diablo Canyon Power Plant Test and Analysis of
Structural Concrete During 1R23, Inspection of the
Circulating Water Conduits TS, CWP, and ASW
Forebays, Discharge Conduits, Intake Structure and
Associated Structures
04/13/2022
Miscellaneous
Report #
VL_22022_082522
Diablo Canyon Power Plant Test and Analysis of Non-
Submerged Structural Concrete of the Intake Structure
08/25/2022
Miscellaneous
Report # VL_DCPP
2R23_22057_020223
Diablo Canyon Power Plant Test and Analysis of
Structural Concrete During 2R23, Inspection of the
Circulating Water Conduits TS, CWP, and ASW
Forebays, Discharge Conduits, Intake Structure and
Associated Structures
2/02/2023
Procedures
AWP E-016
Inspection Guide - Maintenance Rule Structural
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Monitoring Programs - Civil
Procedures
MA1.ID17
Maintenance Rule Monitoring Program
Procedures
MA1.NE1
Maintenance Rule Monitoring Program - Civil
Implementation
Procedures
MP I-9.2-1
AMSAC Maintenance
Procedures
TS1.ID4
Saltwater System Aging Management Program
Corrective Action
Documents
Notifications
242607, 51252637
Procedures
AD7.ID14
Assessment of Integrated Risk
Procedures
B-42
Selecting RMA(s) for Specific RMTS RICT Configurations
Procedures
OP AP-10
Loss of Auxiliary Salt Water
Procedures
OP O-36
Protected Equipment Postings
Procedures
OP1.DC44
Risk Informed Completion Time Program
Corrective Action
Documents
Notifications
51077391, 51221141, 51241451, 51242057, 51248173,
248288, 51250722, 51250806
Miscellaneous
SC-I-9-L950
Accumulator Narrow Range Level Channel L950 through
L957
Miscellaneous
TV-9-1
Scaling Calculation for Accumulator Volume
Corrective Action
Documents
Notifications
51040620, 51070772, 51096718, 51163281, 51192449,
211179, 51221732, 51242800, 51248173
Procedures
MP E-53.10A
Preventive Maintenance of Limitorque Motor Operators
Procedures
MP M-51.5
Testing and Maintenance of Safety/Relief Valves
Procedures
OP B-1A:V
CVCS - Transfer Charging Pumps
Procedures
OP E-5:II
Auxiliary Saltwater System Two CCW Heat Exchanger
Operation
Procedures
STP I-1B
Routine Daily Checks Required by Licenses
136
Procedures
STP M-26
ASW System Flow Monitoring
Procedures
STP M09A1
Diesel Engine Generator 2-1 Routine Surveillance Test
Procedures
STP P-AFW-11
Routine Surveillance Test of Turbine-Driven Auxiliary
Feedwater Pump 1-1
Procedures
STP P-AFW-22
Routine Surveillance Test of Motor-Driven Auxiliary
Feedwater Pump 2-2
Procedures
STP P-ASW-12
Routine Surveillance Test of Auxiliary Saltwater Pump 1-
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Procedures
STP P-ASW-A
Performance Test of Auxiliary Saltwater Pumps
2B
Procedures
STP P-CSP-11
Routine Surveillance Test of Containment Spray Pump 1-
21B
Procedures
STP P-CSP-21
Routine Surveillance Test of Containment Spray Pump 2-
Procedures
STP V-2B
Exercising and Position Verification of Valves 9001A and
9001B
11A
Procedures
STP V-2U2D
Exercising SG 2-2 AFW Supply Valves LCV-107 and
LCV-111
Procedures
STP V-3I3A
Full Stroke Exercise of Containment Spray Valve CS-
9001A
Procedures
STP V-3P5
Exercising Valves LCV-106, 107, 108, and 109 Auxiliary
Feedwater Pump Discharge
Procedures
STP V-3P6A
Exercising Valves LCV-110 and LCV-111 Auxiliary
Feedwater Pump Discharge
Work Orders
WO 60150734, 60155449, 60160297, 64117602, 64262193,
272329, 64273807, 64276980, 64283834, 64284428,
284677, 64285637, 64286511, 64286518, 64287707,
287734, 64291705, 64291728, 64297837
Corrective Action
Documents
Notifications
51145089, 51145525, 51143787, 51149293, 51160172,
51163473, 51164074, 51164376, 51165497, 51165698,
51170459, 51180236, 51180312, 51184118, 51186644,
200527, 51200956, 51203485, 51203781, 51204562,
204723, 51218970, 51245707, 51245817, 51250334,
249372
Corrective Action
Documents
Resulting from
Inspection
Notifications
248637, 51252987
Miscellaneous
July 31, 2024 Evaluated Exercise Performance
Summary, Diablo Canyon Power Plant, Management
Critique and Debrief
08/15/2024
Procedures
EP EF-3
Activation and Operation of the Emergency Operations
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Facility
Procedures
EP G-3
Emergency Notification of Offsite Agencies
Procedures
EP G-4
Assembly and Accountability
Procedures
EP G-5
Evacuation of Non-Essential Site Personnel
Procedures
EP RB-10
Protective Action Recommendations
Procedures
EP RB-16
Operating Instructions for the EARS Computer Program
Procedures
EP RB-8
Instructions for Field Monitoring Teams
Miscellaneous
DCL-23-128, DIL-23-
010
Docket No. 50-275, OL-DPR-80; Docket No. 50-323, OL-
DPR-82; Diablo Canyon Units 1 and 2; Docket No. 72-26,
Materials License No. SNM-2511; Diablo Canyon
Independent Spent Fuel Storage Installation; Emergency
Plan Update
2/13/2023
Miscellaneous
DCL-24-068; DIL-24-
008
Docket No. 50-275, OL-DPR-80; Docket No. 50-323, OL-
DPR-82; Diablo Canyon Units 1 and 2; Docket No. 72-26,
Materials License No. SNM-2511; Diablo Canyon
Independent Spent Fuel Storage Installation; Emergency
Plan Update
07/03/2024
Miscellaneous
Tracking Number:
23-14
50.54(q) Effectiveness Evaluation - Evaluate the
Differences Between the 2012 and 2022 DCPP ETE
Reports
09/26/2023
Miscellaneous
Tracking Number:
23-15
Revise EP RB-10, Protective Action Recommendations
11/15/2023
Miscellaneous
Tracking Number:
23-16
Revise Procedure EP G-3 to Address Change in RPSA
Ocean PAR Strategy
11/15/2023
Miscellaneous
Tracking Number:
23-17
50.54(q) Effectiveness Evaluation - Revise the Method to
Determine 5 or 10 Nautical Mile Ocean Areas for the
Rapidly Progressing Severe Accident (RPSA) Scenario
09/26/2023
Miscellaneous
Tracking Number:
23-18
Revise Appendix G to the Emergency Plan
09/26/2023
Miscellaneous
Tracking Number:
24-07
50.54(q) Effectiveness Evaluation - Recovery and Re-
entry Plan Changes
04/24/2024
Procedures
OM10.ID2
Emergency Plan Revision and Review
13A
Calculations
Annual verification of calibration for the JL Shepherd
model 89 irradiator 260Ci Cs-137 RS-001
06/06/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Calculations
Annual verification of calibration for the JL Shepherd
model 89 irradiator 400Ci Cs-137 RS-002
2/28/2024
Calibration
Records
Calibration of the Bed IN VIVO Counting System
07/03/2024
Calibration
Records
Calibration of the Mirion Fast Scan WBC System
05/20/2024
Calibration
Records
03.32.103
Calibration of portable instrument
03/22/2024
Calibration
Records
04.16.001
Calibration of Continuous Air Monitor
09/14/2023
Calibration
Records
249448
Containment High Range Calibration of RM-30
08/17/2022
Corrective Action
Documents
SAPN
51163436, 51164003, 51170813, 51181901, 51187879,
51189557, 51192351, 51198075, 51200267, 51202004,
217207, 51221407, 51227240, 51227709, 51230214,
238041
Procedures
CAP B-50:I
Liquid Scintillation Analyzer Model 2910 Operation
Procedures
CAP B-53:III
Operation of the Canberra APEX Gamma Spectroscopy
System
Procedures
MP I-RC28
Calibration of Ludlum 177 Count Rate Meter
Procedures
MP I-RD44
Mirion TelePole II Calibration
Procedures
RCP D-353
Canberra Fastscan Whole Body Counter Operation
Procedures
RCP D-363
Canberra/Helgeson Bed Counter Operation
Procedures
RCP D-900
Performance Tests for Radiation Protection Instruments
Procedures
RCP D-936
Canberra GEM-5 Portal Monitor Operation
Procedures
RCP D-937
Canberra Argos-5 Contamination Monitor Operation
Procedures
RCP D-980
Operation of the J.L. Shepherd Model 89 Calibrator
Procedures
STP I-18N1
Functional Test of Containment High Range Area
Radiation Monitors RM-30 & RM-31
Calculations
Liquid Effluents Error Calculation Bases
08/01/2024
Calculations
Continuous Release Gross Alpha Error
08/14/2024
Calculations
SBC-2022-004
Radiation Monitor Basis and Calculation (SBC) RM-14
and RM-18
2/20/2024
Corrective Action
SAPN
51185282, 51215549, 51239823, 51249378, 51249507,
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Documents
2153538
Corrective Action
Documents
Resulting from
Inspection
SAPN
250547, 51250549,
Drawings
CAP A-8 Attachment
Gaseous Releases Monitored for Radioactivity
Drawings
FSAR Figure 11.2-2
Liquid Radwaste Process Flow Diagram
Miscellaneous
23
23 Diablo Canyon Power Plant Land Use Census
Report
2/26/2023
Miscellaneous
21 Annual Radioactive Effluent Release Report
04/21/2022
Miscellaneous
22 Annual Radioactive Effluent Release Report
05/01/2023
Miscellaneous
23 Annual Radioactive Effluent Release Report
04/28/2024
Miscellaneous
G-2022-0286
Unit-1 Plant Vent Discharge Permit
10/22/2022
Miscellaneous
G-2022-0287
Unit-1 Plant Vent Discharge Permit
10/31/2022
Miscellaneous
G-2022-0288
Unit-2 Plant Vent Discharge Permit
11/01/2022
Miscellaneous
G-2024-0209
Discharge of Plant Vent U2
07/25/2024
Miscellaneous
Unit 2 Processed Waste Receiver Tank
08/16/2024
Procedures
CAP A-5
Liquid Radwaste Management Discharge
Procedures
CAP A-5:1
Liquid Radwaste Management Infrequent Discharges and
Processes
Procedures
CY2.1D1
Radioactive Liquid & Gaseous Effluent Monitoring
16A
Procedures
CY2.DC1
Radiation Monitoring System High Alarm Setpoint Control
Program
Procedures
OP G-1: II
Liquid Radwaste System - Discharge of Liquid Radwaste
Procedures
PEP M-2
U-2 Containment Hydrogen Purge Ventilation System -
DOP and Halide Penetrations Test
2D
Procedures
PEP M2
U-1 Containment Hydrogen Purge Ventilation System -
DOP and Halide Penetrations Test
2B
Procedures
U1 STP M-3A
Auxiliary Building Ventilation System - DOP and Halide
Penetrations Test
Procedures
U1 STP M-41
Fuel Handling Building Ventilation System - DOP and
Halide Penetrations Test
21A
Procedures
U2 STP M-3A
Auxiliary Building Ventilation System - DOP and Halide
17A
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Penetrations Test
Procedures
U2 STP M-41
Fuel Handling Building Ventilation System - DOP and
Halide Penetrations Test
Self-
Assessments
23-IA-01
23 Chemistry and Environmental Operations Audit
2/08/2023
Self-
Assessments
NUPIC Audit/Survey
Number 25092
Mirion Technologies (Canberra) Incorporated
2/10/2021
Self-
Assessments
NUPIC Audit/Survey
Number 25226
Gel Laboratories, LLC
05/05/2022
Self-
Assessments
Quick Hit: Radioactive Gaseous and Liquid Effluents
Treatment
05/02/2024
Self-
Assessments
Work Order No.
664668
Gel Labs LLC QC Part 61 Sample Analysis
05/24/2024
Work Orders
U2 CCW Liquid Radiation Monitor 2RM-17B
05/15/2024
Work Orders
U1 Steam Generator Blowdown 1-RM-23
05/17/2024
Work Orders
Functional Test Steam Generator Blowdown 1-RM-19
05/17/2024
Work Orders
Functional Test Liquid Radwast2 0-RM-18
05/16/2024
Corrective Action
Documents
SAPN
51131543, 51132123, 51132124, 51132125, 51133810,
51140164, 51147904, 51155074, 51157011, 51160198,
214949,
Corrective Action
Documents
SAPN -
Meteorological
Equipment
51124808, 51126056, 51127383, 51127972, 51128495,
51129600, 51131240, 51135262, 51135843, 51136017,
51136971, 51137053, 51139141, 51140978, 51140978,
51140979, 51143121, 51150244, 51153935, 51154602,
51159767, 51162364, 51163483, 51163650, 51165489,
51167578, 51167599, 51173405, 51180944, 51182741,
51183117, 51183180, 51183353, 51184562, 51184883,
51185612, 51193639, 51196438, 51198493, 51199441,
51199443, 51199711, 51202672, 51205803, 51206280,
211916, 51220449, 51220476, 51222020, 51223244,
223899, 51224435, 51225198, 51230903, 51236732,
241982, 51244606, 51246964, 51247628
Miscellaneous
21 Annual Quality Assurance Report for The
Radiological Environmental Monitoring Program (REMP)
03/01/2022
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Miscellaneous
22 Annual Quality Assurance Report for The
Radiological Environmental Monitoring Program (REMP)
03/17/2023
Miscellaneous
23 Annual Quality Assurance Report for The
Radiological Environmental Monitoring Program (REMP)
2/28/2024
Miscellaneous
21 Annual Radiological Environmental Operating
Report - Diablo Canyon Power Plant: January 1, 2021 -
December 31, 2021
04/07/2022
Miscellaneous
22 Annual Radiological Environmental Operating
Report - Diablo Canyon Power Plant: January 1, 2022 -
December 31, 2022
04/26/2023
Miscellaneous
23 Annual Radiological Environmental Operating
Report - Diablo Canyon Power Plant: January 1, 2023 -
December 31, 2023
04/29/2024
Miscellaneous
Diablo Canyon Power Plant - XOQDOQ Analysis for
Calendar Year 2023 Based on the 2019-2023 Joint
Frequency Distribution of Wind and Stability
Miscellaneous
Updated Site Conceptual Model Report - Diablo Canyon
Power Plant
06/21/2024
Miscellaneous
22-SA-003
Joint Utility Audit of F&J Specialty Products
2/17/2022
Procedures
RCP EM-1
Radiological Environmental Biological Sampling
Procedures
RCP EM-2
Radiological Environmental Air Sampling
Procedures
RCP EM-3
Use of Environmental Thermoluminescent Dosimeters
Procedures
RCP EM-5
DCPP Groundwater Sampling
Procedures
RCP EM-6
Radiological Environmental Carbon-14 Air Sampling
Procedures
RP1.ID11
Environmental Radiological Monitoring Procedure
Procedures
RP1.ID13,
DCPP Ground Water Protection Initiative Program
Procedures
STP I-40-M559.B
Primary Meteorology Wind Direction, Wind Speed, and
Air Temperature/DT Cal
Procedures
STP I-40-M569.B
Backup Meteorology Wind Direction, Wind Speed, and
Air Temperature/Delta-T
Self-
Assessments
SAPN 51162114
Groundwater Protection Initiative (GPI) Self-Assessment
01/25/2024
Corrective Action
Documents
SAPN
51160713, 51164094, 51169372, 51178823, 51179046,
51187916, 51188032, 51189637, 51198588, 51198717,
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
210813, 51212476, 51215724, 51217373, 51225805,
226348, 51230411, 51230571, 51236858
Miscellaneous
230173
National Source Tracking Inventory - 2022
01/04/2022
Miscellaneous
246082
National Source Tracking Inventory - 2023
01/17/2023
Miscellaneous
261930
National Source Tracking Inventory - 2024
01/18/2024
Miscellaneous
272271
STP G-19 Radioactive Source Leak Testing
10/10/2023
Miscellaneous
OSGSF Activity
Storage Records
01/06/2024
Procedures
RCP D-620
Radioactive Source Control Program
Procedures
RCP D-631
Radioactive Material Shipments
Procedures
RCP RW-13
Storage and Accountability of Low-Level Radioactive
Waste
8A
Procedures
RP1.DC2
Advance Notification of High Level RAM Shipments
4A
Procedures
RP1.ID14
Radioactive Material Control
Procedures
RP1.ID18
Transportation Security Plan
Procedures
RP2
Solid Low-Level Radioactive Waste Management
8D
Procedures
RP2.DC2
Radwaste Solidification Process Control Program
Radiation
Surveys
73812
Entered OSGSF with NRC to perform inspection
08/25/2020
Radiation
Surveys
87667
23-R-001 Spent Resin Liner survey for shipment
07/12/2023
Radiation
Surveys
93965
115 Backyard Vault 24 and 25 RM-84 and was
transported to the 119 Cal. Facility for Calibration
05/16/2024
Radiation
Surveys
94480
RW Monthly
07/08/2024
Radiation
Surveys
94562
24-K-023 U2 SFP Pit Filter change and spent filter
storage
07/16/2024
Self-
Assessments
22
Radiation Protection Section Annual Review
10/06/2023
Self-
Assessments
212476
Quick Hit Self-Assessment: Radioactive Solid Waste
Processing and Radioactive Material Handling, Storage
and Transportation
07/10/2024
Self-
Assessments
215724
23 Part 37
2/07/2023
Self-
217373
Annual Part 37 Security Review
05/02/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Assessments
71151
Corrective Action
Documents
Notifications
51161238, 51203661, 51205659, 51216912
71151
Miscellaneous
Bravo Team Full Scope Drill, 8/16/2023, Narrative
Summary
08/16/2023
71151
Miscellaneous
RHR, CCW, AFW, and ASW Technical Specification
Reports (Q3 2023-Q2 2024)
71151
Miscellaneous
DEPI PEG-02
Drill and Exercise Performance Indicator (DEPI)
Performance Evaluation Guide (PEG)
04/25/2023
71151
Miscellaneous
DEPI PEG-04
Drill and Exercise Performance Indicator (DEPI)
Performance Evaluation Guide (PEG)
04/25/2023
71151
Miscellaneous
DEPI PEG-10
Drill and Exercise Performance Indicator (DEPI)
Performance Evaluation Guide (PEG)
04/25/2023
71151
Miscellaneous
DEPI PEG-16
Drill and Exercise Performance Indicator (DEPI)
Performance Evaluation Guide (PEG)
04/25/2023
71151
Miscellaneous
ROP-MSPI-CWS
MSPI Indicator Margin, Units 1 and 2
07/11/2024
71151
Miscellaneous
ROP-MSPI-CWS
MSPI Derivation Report, Units 1 and 2
07/11/2024
71151
Miscellaneous
ROP-MSPI-HRS
MSPI Indicator Margin, Units 1 and 2
07/11/2024
71151
Miscellaneous
ROP-MSPI-HRS
MSPI Derivation Report, Units 1 and 2
07/11/2024
71151
Miscellaneous
ROP-MSPI-RHR
MSPI Indicator Margin, Units 1 and 2
07/11/2024
71151
Miscellaneous
ROP-MSPI-RHR
MSPI Derivation Report, Units 1 and 2
07/11/2024
71151
Procedures
AWP EP-001
Emergency Preparedness Performance Indicators
24