IR 05000282/2024002
| ML24211A170 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 07/30/2024 |
| From: | Richard Skokowski NRC/RGN-III/DORS/RPB3 |
| To: | Conboy T Northern States Power Company, Minnesota |
| References | |
| IR 2024002 | |
| Download: ML24211A170 (1) | |
Text
SUBJECT:
PRAIRIE ISLAND NUCLEAR GENERATING PLANT - INTEGRATED INSPECTION REPORT 05000282/2024002 AND 05000306/2024002
Dear Thomas Conboy:
On June 30, 2024, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Prairie Island Nuclear Generating Plant. On July 15, 2024, the NRC inspectors discussed the results of this inspection with you 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, Richard A. Skokowski, Chief Reactor Projects Branch 3 Division of Operating Reactor Safety Docket Nos. 05000282 and 05000306 License Nos. DPR-42 and DPR-60
Enclosure:
As stated
Inspection Report
Docket Numbers:
05000282 and 05000306
License Numbers:
Report Numbers:
05000282/2024002 and 05000306/2024002
Enterprise Identifier:
I-2024-002-0065
Licensee:
Northern States Power Company
Facility:
Prairie Island Nuclear Generating Plant
Location:
Welch, MN
Inspection Dates:
April 01, 2024, to June 30, 2024
Inspectors:
T. McGowan, Resident Inspector
K. Poolman, Project Engineer
K. Pusateri, Resident Inspector
J. Reed, Health Physicist
D. Tesar, Senior Resident Inspector
Approved By:
Richard A. Skokowski, Chief
Reactor Projects Branch 3
Division of Operating Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an integrated inspection at Prairie Island Nuclear Generating 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
Type Issue Number Title Report Section Status URI 05000306/2024001-01 Unresolved Item Associated with Modifications to Motor-Operated Valve Limit Switch 71111.18 Closed
PLANT STATUS
Unit 1 entered the inspection period operating at full-rated thermal power (RTP), except for brief power reductions to perform surveillance testing, or flexible power operations.
On June 12, 2024, at 0930, Unit 1 power commenced an unplanned downpower to approximately 42 percent of RTP for maintenance. On June 20, 2024, at 0100, Unit 1 returned to full RTP where it operated at or near full RTP for the remainder of the inspection period.
Unit 2 entered the inspection period operating at full RTP, except for brief power reductions to perform surveillance testing, or flexible power operations. On May 5, 2024, Unit 2 briefly lowered power to approximately 50 percent RTP for maintenance. On May 8, 2024, at 2000, Unit 2 power was lowered to approximately 42 percent of RTP for maintenance. On May 12, 2024, from 1500 to 1900, Unit 2 power was further lowered to approximately 8 percent RTP for equipment recovery following maintenance, and then returned to approximately 42 percent RTP. On May 15, 2024, at 1240, Unit 2 returned to full RTP where it operated at or near full RTP 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.
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 severe weather in the area for the following systems:
entry into AB-2, Severe Weather, on June 17, 2024
Impending Severe Weather Sample (IP Section 03.02) (1 Sample)
- (1) The inspectors evaluated the adequacy of the overall preparations to protect risk-significant systems from an impending 3-day severe weather event on May 20, 2024.
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) D6 emergency diesel generator standby lineup on April 1, 2024 (2)122 bus rooms during 122 control room chiller maintenance on April 22, 2024
- (3) D1 emergency diesel generator standby lineup on May 10, 2024 (4)121 spent fuel pool cooling system (protected train) on May 30, 2024
Complete Walkdown Sample (IP Section 03.02) (1 Sample)
- (1) The inspectors evaluated system configurations during a complete walkdown of the 22 turbine-driven auxiliary feedwater (AFW) system on May 21, 2024.
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) Fire Detection Zone (FDZ) 4, turbine building Unit 1, elevation 679' and 695' on April 1, 2024
- (2) FDZ 74, screenhouse ground floor, elevation 670' on April 9, 2024
- (3) FDZ 75, plant screen house, elevation 695' on April 11, 2024
- (4) FDZ 6, elevation 695', level D2 diesel room on May 6, 2024
- (5) FDZ 46, elevation 715', auxiliary building Unit 2 on May 20, 2024
71111.06 - Flood Protection Measures
Flooding Sample (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated external flooding mitigation protections in the external flood barriers and underground cables.
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 Unit 2 down power (100 percent to 40 percent) on May 8, 2024.
Licensed Operator Requalification Training/Examinations (IP Section 03.02) (1 Sample)
- (1) The inspectors observed and evaluated a licensed operator NRC requalification exam on May 21, 2024.
71111.12 - Maintenance Effectiveness
Maintenance Effectiveness (IP Section 03.01) (2 Samples, 1 Partial)
The inspectors evaluated the effectiveness of maintenance to ensure the following structures, systems, and components (SSCs) remain capable of performing their intended function:
(1)
(Partial)main steam isolation valve maintenance procedure evaluation on March 6, 2024 (2)maintenance rule and in-service testing requirements review on May 1, 2024 (3)motor-driven auxiliary feedwater pump (MDAFWP) suction and discharge pressure calibrations on May 29, 2024
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)123 instrument air compressor failure on April 15, 2024
- (2) SP 1159, Failure of MV-32018 Valve Position Indication (IST Failure), on April 29, 2024 (3)auxiliary building crane failure with loaded cask suspended on May 21, 2024 (4)122 instrument air compressor failure with 121 and 122 out of service on June 10, 2024 (5)emergent downpower on Unit 1 to repair circulation water pump leak on June 14, 2024
71111.15 - Operability Determinations and Functionality Assessments
Operability Determination or Functionality Assessment (IP Section 03.01) (6 Samples)
The inspectors evaluated the licensees justifications and actions associated with the following operability determinations and functionality assessments:
(1)prompt operability determination for MV-32019 on April 9, 2024 (2)auxiliary building special ventilation system operability and PMT 21 auxiliary building exhaust fan on April 18, 2024
- (3) C18.1 evaluation of temperature for operability of 122 bus room on April 22, 2024 (4)21 cooling water strainer failure to backwash for Corrective Action Program (CAP)
===501000084343 on April 22, 2024 (5)cooling water system operability post Surveillance Procedure (SP) 1159 on April 29, 2024 (6)operability review for CAP 501000085115 MV-32038 high running torque on May 9, 2024
71111.18 - Plant Modifications
Temporary Modifications and/or Permanent Modifications (IP Section 03.01 and/or 03.02)
=
The inspectors evaluated the following temporary or permanent modifications:
(1)limit switch modifications for MV-32019 on January 6, 2024 (2)bus 25 feed to bus 27, setpoint change for Bkr 25-1 for Engineering Change (EC)
===601000004855 on May 7, 2024
- (3) D5 engine 1 fan 1 mods on June 5, 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)===
- (2) WO 700128733, SP 1089A 11 RHR [residual heat removal] Pump Qtrly Run, on May 9, 2024
- (3) WO 7000095073, MV-32128 Bkr Roll PMT 21 RHR HX [heat exchanger]
CC [component cooling] Inlt MV-32128, on May 14, 2024
- (4) WO 700129256, SP 2102 22 Turbine-Driven AFW Pump Qtrly Test PMT, on May 21, 2024
- (5) WO 700125627, PMT and RTS MD-32428 with New Positioner, on May 22, 2024
- (6) WO 700139187, PMT 22 CC Pump, on May 31, 2024 (7)122 auxiliary building special ventilation PMT on May 31, 2024
- (8) WO 700129846, SP 1101 12 MDAFWP Qtr Flow & Vlv Test, on May 29, 2024
- (9) SP 1295 D1 emergency diesel generator pump following maintenance on June 12, 2024
Surveillance Testing (IP Section 03.01) (5 Samples)
- (1) WO 700127266, SP 2101 21 Motor Driven Auxiliary Feedwater Pump Quarterly Flow and Valve Test, on April 1, 2024
- (2) WO 700130624, SP 1106A 12 Diesel CL [cooling water] Pmp Mnthly, on April 15, 2024
- (3) WO 700127468, SP 1090A 11 Containment Spray Pump Quarterly Test, on May 3, 2024
- (4) WO 700126441, SP 2295 D5 Diesel Generator 6 Month Fast Start Test, on May 13, 2024
- (5) WO 700129945, SP 1090B 12 Containment Spray Pump Quarterly Test on May 24, 2024
Diverse and Flexible Coping Strategies (FLEX) Testing (IP Section 03.02) (1 Sample)
- (1) WO 700128442, TP 1870A 121 FLEX DS DRIVEN SG-SFP M-U PMP SEMI-ANN, on May 16, 2024
71114.06 - Drill Evaluation
Required Emergency Preparedness Drill (1 Sample)
(1)emergency preparedness drill with Drill and Exercise Performance (DEP) and ERO evaluation on May 14,
RADIATION SAFETY
71124.03 - In-Plant Airborne Radioactivity Control and Mitigation
Permanent Ventilation Systems (IP Section 03.01) (1 Sample)
The inspectors evaluated the configuration of the following permanently installed ventilation systems:
- (1) Unit 1 auxiliary building ventilation particulate and charcoal filtration system
Self-Contained Breathing Apparatus for Emergency Use (IP Section 03.04) (1 Sample)
- (1) The inspectors evaluated the licensees use and maintenance of self-contained breathing apparatuses.
71124.04 - Occupational Dose Assessment
Source Term Characterization (IP Section 03.01) (1 Sample)
- (1) The inspectors evaluated licensee performance as it pertains to radioactive source term characterization.
External Dosimetry (IP Section 03.02) (1 Sample)
- (1) The inspectors evaluated how the licensee processes, stores, and uses external dosimetry.
Internal Dosimetry (IP Section 03.03) (2 Samples)
The inspectors evaluated the following internal dose assessments:
- (1) internal dose assessment for ID# N128502 (2)internal dose assessment for ID# 301529
Special Dosimetric Situations (IP Section 03.04) (2 Samples)
The inspectors evaluated the following special dosimetric situations:
- (1) skin exposure evaluation for ID# 226834 (2)declared pregnant worker evaluation for ID#
OTHER ACTIVITIES - BASELINE
===71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:
MS05: Safety System Functional Failures (SSFFs) Sample (IP Section 02.04)===
- (1) Unit 1 (January 1, 2023, through December 31, 2023)
- (2) Unit 2 (January 1, 2023, through December 31, 2023)
MS08: Heat Removal Systems (IP Section 02.07) (2 Samples)
- (1) Unit 1 (January 1, 2023, through December 31, 2023)
- (2) Unit 2 (January 1, 2023, through December 31, 2023)
BI02: RCS Leak Rate Sample (IP Section 02.11) (2 Samples)
- (1) Unit 1 (January 1, 2023, through December 31, 2023)
- (2) Unit 2 (January 1, 2023, through December 31, 2023)
71152A - Annual Follow-up Problem Identification and Resolution Annual Follow-up of Selected Issues (Section 03.03)
The inspectors reviewed the licensees implementation of its corrective action program related to the following issues:
(1)follow up of CAP 50100078473 CV-31116 as-found condition on April 22, 2024 (2)follow up of CAP 50100077533 hourly firewatch round missed on June 26, 2024
71152S - Semiannual Trend Problem Identification and Resolution Semiannual Trend Review (Section 03.02)
- (1) The inspectors reviewed the licensees corrective action program to identify potential trends in backlog reduction meeting effectiveness on April 16, 2024, that might be indicative of a more significant safety issue.
- (2) The inspectors reviewed the licensees corrective action program to identify potential trends in instrument air compressor failures on June 20, 2024, that might be indicative of a more significant safety issue.
71153 - Follow Up of Events and Notices of Enforcement Discretion Event Report (IP Section 03.02) (2 Partials)
The inspectors evaluated the following licensees event reporting determinations to ensure it complied with reporting requirements.
(1)
(Partial)05000306/2024-001-00; LER 2024-001-00 for Prairie Island Nuclear Generating Plant, Unit 2, Reactor Trip and Auto-Start Actuation of Auxiliary Feedwater due to Loss of Suction to the 22 Main Feedwater Pump (2)
(Partial)05000306/2024-001-01; LER 2024-001-01 for Prairie Island Nuclear Generating Plant, Unit 2, Reactor Trip and Auto-Start Actuation of Auxiliary Feedwater due to Loss of Suction to the 22 Main Feedwater Pump
INSPECTION RESULTS
Unresolved Item (Closed)
Unresolved Item Associated with Modifications to Motor Operated Valve Limit Switch URI 05000306/2024001-01 71111.18
Description:
A minor violation was identified and documented in Section 71111.18 of this report.
This unresolved Item (URI) is being closed to that minor violation.
Corrective Action References:
501000079553, Bkr 211J-13 Tripped During PMT/RTS 501000079667, Manually Operated MV-32019 per COO-17 501000081027, MOV [motor-operated valve] Limit Switch Grease Related Failures 501000081105, MV-32019 Thermals Tripped D 501000083170, LEGACY: MV-32019 Limit Switch Material 501000083626, MV-32019 Limit Switch Minor Violation 71111.18 Minor Violation Associated with Modifications to Motor-Operated Valve Limit Switch Minor Violation: During refueling outage 2R33, modifications were made to the safety-related limit switch installed on motor-operated valve, MV-32019, 21 steam generator main steam supply to the 22 turbine-driven auxiliary feedwater pump. Specifically, the gears inside the replacement switch were stainless steel rather than bronze (not like-for-like), and the licensee drilled an additional hole through the intermittent shaft perpendicular to the manufacturer-provided hole, and then changed the orientation of the rotor from that provided by the vendor, in order for the rotor to work correctly.
Title 10 of the Code of Federal Regulations (CFR) Part 50, Appendix B, Criteria XV, Nonconforming Materials, Parts, or Components, requires, in part, Measures shall be established to control materials, parts, or components which do not conform to requirements in order to prevent their inadvertent use or installation. These measures shall include, as appropriate, procedures for identification, documentation, segregation, disposition, and notification to affected organizations. Nonconforming items shall be reviewed and accepted, rejected, repaired or reworked in accordance with documented procedures.
Contrary to the above, between December 5, 2023, and January 29, 2024, the licensee failed to control nonconforming items, such that they were reviewed and accepted, rejected, repaired or reworked in accordance with documented procedures. Specifically, nonconforming parts were modified and installed without coordination with affected organizations in accordance with plant procedures FP-SC-PE-02, Item Equivalency Evaluations, and FP-E-MOD-02, Engineering Change Control.
Screening: The inspectors determined the performance deficiency was minor. This violation aligns with the minor case of IMC 0612, Appendix E, Examples of Minor Violations, example 4.m: The inspector identified a motor-operated valve (MOV) torque switch was not installed properly. Specifically, the licensees procedure to re-install MOV RH-6833 did not include a step to reset the MOV torque switch to previously installed torque switch settings.
Once identified, the licensee had to enter an unplanned maintenance window to reset the toque switch.
This performance deficiency did not adversely affect the mitigating systems cornerstone objective because the inadequate adherence to procedure would not have resulted in equipment failure. Specifically, the licensee analysis confirmed the change in material was authorized by the vendor and the modification to the shaft and rotor would not prevent the limit switch from performing its safety function, and therefore the limit switch and the motor-operated valve remained operable.
Enforcement:
This failure to comply with 10 CFR 50, Appendix B, Criteria XV constitutes a minor violation that is not subject to enforcement action in accordance with the NRCs Enforcement Policy.
Observation: Follow-up of CAP 501000077533 Hourly Firewatch Round Missed on F5 APP 71152A Inspectors selected CAP 501000077533 for follow-up based upon the risk significance of fire as an external event, especially during higher risk evolutions (HRE). On October 8, 2023, at 1535, Operations entered a fire impairment for Unit 2 establishing hourly fire watches for areas listed in F5 Appendix K, Attachment 4, per procedure 2C1.3-M5. The 1800 round was not completed for the safety-related bus 15 room. The individual performing the fire watch round for 1900 realized that the incorrect room had been checked on the 1800 round and reported the condition to supervision. The licensee entered the issue into the corrective action program (CAP) and performed a human performance event investigation. Corrective actions included review of other rounds which determined no other spaces were missed, re-training staff to arrest knowledge gaps, and the bus 15 room was verified to have functional fire detection. Inspectors reviewed the corrective action database and noted that corrective actions appeared to be effective since no further issues have been identified.
No more-than-minor findings or violations were identified during this inspection.
Observation: Review of Actions Taken for CAP 501000078473 CV-31116 As-Found Condition 71152A Inspectors reviewed actions taken for CAP 501000078473, CV-31116 As-Found Condition, based upon risk significance. This CAP documented the following: foreign material (FM) on top of the actuating cylinder pistons, binding of the actuator disk, and scoring at the bottom of the air cylinders (full closed position). The FM was determined to be pipe scale from the upstream air system. The CAP was then closed to WO 700038835-0010 which completed PM 3170-1-21, CV-31116 Loop A MSIV Refueling Inspection. Inspectors reviewed the WO and determined that actions were taken to correct or disposition the conditions identified in CAP 501000078473 and the WO documented that the valve moved freely following maintenance. In addition, the PMT was completed satisfactorily, ensuring the valve was capable of performing its designed safety function. Inspectors did not identify any issues of concern associated with the actions taken to correct the condition(s) adverse to quality identified in the CAP. The inspectors did not identify any more-than-minor findings or violations during this review.
Observation: Trend Review of Aggregate Risk Impact of Low Safety Significant Systems 71152S Based upon a cognitive trend, inspectors performed a trend review of how the licensee was assessing the aggregate risk associated with deficiencies in low safety significant systems.
The inspectors identified that the licensee had not recently performed backlog reduction meetings in accordance with fleet procedure FP-WM-WOI-01, Work Identification, Screening, Validation, and Cancelation, Attachment 7. The purpose of these meetings was to determine the aggregate risk impact of multiple deficiencies in a particular system and elevating the priority of the repairs as needed based upon the results of that review.
Inspectors determined that the failure to conduct the meetings was due to individuals new in role who were unfamiliar with the procedural requirements. Once identified, the licensee entered this issue into their corrective action program (CAP) and initiated monthly meetings as required. Inspectors determined that the action taken has corrected the condition adverse to quality. No more-than-minor findings or violations were identified during this review.
Observation: Trend of Instrument Air Compressor Failures 71152S Inspectors selected a cognitive trend of instrument air compressor (IAC) failures for a semi-annual review. Twenty corrective action documents were reviewed, where nine maintenance rule evaluations identified condition monitoring events across multiple functions. On May 1, 2024, the licensee determined that the condition monitoring threshold for 123 instrument air compressor had been exceeded, and 123 instrument air compressor was later (on June 27, 2024) placed in (a)(1) monitoring status per 10 CFR 50.65 Maintenance Rule. On June 8, 2024, QIM 501000086471 titled, Instrument Air System Health, was written to identify the condition of all three IACs degraded or non-functional. Immediate corrective actions included the senior leadership team meeting, staffing the outage control center, and prioritizing IAC troubleshooting and corrective maintenance. This led to restoration of the three instrument air compressors and associated support equipment. Planned corrective actions include re-evaluating upcoming preventive maintenance work windows in an attempt to avoid the need for future corrective maintenance. Inspectors noted that the condition adverse to quality had been corrected with the restoration of all three instrument air compressors. Additional actions are planned to evaluate for trends or commonalities associated with instrument air equipment failures to provide increased reliability moving forward. No more-than-minor findings or violations were identified during the semi-annual trend review.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On July 15, 2024, the inspectors presented the integrated inspection results to Thomas Conboy, Site Vice President, and other members of the licensee staff.
- On May 3, 2024, the inspectors presented the radiation protection baseline inspection results to Timothy Borgen, Plant Manager, and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Procedures
AB-2
Severe Weather
NF-39223
Flow Diagram Feedwater & Aux Feedwater Unit 2
Drawings
XH-1-29
Flow Diagram Spent Fuel Cooling System Units 1 & 2
1C20.7
D1/D2 Diesel Generators
C16
Spent Fuel Cooling System
C28-18
Turbine Driven Auxiliary Feedwater Pump
C28-7
Auxiliary Feedwater System Unit 2
Procedures
Operating
Procedure 2C20.7
D5/D6 Diesel Generators
Fire Detection
Zone 1
695' Level Turbine Building, Battery Room 11 & 12
Fire Detection
Zone 2
Aux Feedwater Pump Rooms, El 695'
Fire Detection
Zone 35
Battery Room 21 & 22, El 695'
Fire Detection
Zone 4
Fire Area 69; Turbine Building Unit 1, Elevation 679' and 695'
Fire Detection
Zone 6
Fire Area 26; Level D2 Diesel Room, Elevation 695'
Fire Detection
Zone 74
Fire Area 41B; Screenhouse Ground Floor, Elevation 670'
Fire Detection
Zone 75
Fire Areas 41 & 41A; Plant Screen House, Elevation 695'
Fire Plans
Fire Detection
Zone 82
D1 Diesel Room, El 695'
Procedures
AB-4
Flood
Corrective Action
Documents
5010000860002
SP 1234B Procedure Issues
05/29/2024
Engineering
Changes
IEE-2024-054-00
Limitorque 4-Train Limit Switch Assembly, P/N 10120 to P/N
10160, MID # KLT13G-1, SR
608000001135
Come-along Usage on MSIV
Engineering
Evaluations
QF0739, Request
Approval 602000017241, Chain-Falls for Closing the MSIVs
04/01/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Number 355
as Part of Operating the Plant
Prairie Island
Maintenance Rule
Basis Document
Various Functions
Various
Dates
QF0739, Request
Number 362
Should the Testing Of CV-31741 be Adjusted to Account for
the Max Containment Pressure Of 46 Psig?
05/02/2024
Miscellaneous
QF0739, Request
Number 363
What is the Credited Fail Position for SV-33133, Cooling
Water to 121 Safeguards Traveling Screens Solenoid Valve?
05/02/2024
PM 3122-3
Shield Bldg, Category 1 Vent Zone, Fire and Security Door
Inspection
Procedures
SP 1234B
Aux Feedwater Pump Suction and Discharge Pressure
Switches Calibration
Corrective Action
Documents
501000083626
MV-32019 - 21 SG Steam Supply Valve
Engineering
Evaluations
POR
501000085115
Satisfactorily Completed SP 1159, COOLING WATER
VALVES QUARTERLY TEST per WO-000700122604-0010.
01/04/2024
Procedures
SP 1159
Cooling Water Valves Quarterly Test
501000080988
PICETI Bus 27 Coordination Not Assured
01/18/2024
501000084375
Breaker Opening Times: ENG-EE-162
04/22/2024
501000084967
PMT Issues for Setpoint Change Bus 27 Relay
05/07/2024
Corrective Action
Documents
501000085005
Perform BKR Setpoint Chg: As Found
05/07/2024
NE-116785,
Sheet 12
Prairie Island Nuclear Generating Plant
NF-120705-0
Internal Wiring Diagram 4kV Switchgear Bus 25
Cub. 1 - Sh. 2
Drawings
NF-239270
Prairie Island Plant and Substation Operating One Line
Diagram
Engineering
Changes
601000004855
601000005066
D5 ENG1 MTR Cooling Fan New Keyway EC
Miscellaneous
EPRI Report
Summary
Technical Repair Guidelines for Limitorque Model SMB-OO
Valve Actuators
June 1995
Work Orders
Perform BKR 25-1 Setpoint Change
05/07/2024
Procedures
SP 1074A
Train A Auxiliary Building Special Vent System
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Quarterly Test
SP 1074B
Train B Auxiliary Building Special Vent System
Quarterly Test
SP 1089A
Train A RHR Pump and Suction Valve from RWST
Quarterly Test
SP 1090A
Containment Spray Pump Quarterly Test
SP 1090B
Containment Spray Pump Quarterly Test
SP 1101
Motor-Driven Auxiliary Feedwater Pump Quarterly
Flow and Valve Test
SP 1106A
Diesel Cooling Water Pump Monthly Test
106
SP 1295
D1 Diesel Generator 6 Month Fast Start Test
SP 2101
Motor-Driven Auxiliary Feedwater Pump Quarterly
Flow and Valve Test
TP 2296B
D6 Radiator Fans Weekly Run Test & 2ZG System Weekly
Damper Cycling
SP 1090A 11 CNTMT SPRAY PMPQTR
05/03/2023
Troubleshoot BKR 211J-13 and MV-32019
(BKR 211J-11) 21 RHR HX CC INLT MV-32128
04/28/2022
QIM 501000070722
D6 RM RECIRC AIR MD REPL POSNR
05/22/2024
SP 1089A-1A RHR PMP & SUCT VLV FROM RWST
05/29/2024
SP 1090B 12 CNTMT SPRAY PMP QTR
06/13/2024
SP 1101 12 MDAFWP WTR FLOW & VLV TEST
05/30/2024
SP 1106A 12 DIESEL CL PMP MNTHLY
Work Orders
SP 1074A TRN A ABSV SYS QTR TEST
Annual SCBA
Flow Test for
LAD090894
07/13/2023
Calibration
Records
Annual SCBA
Flow Test for Unit
PI-FB-112
Scott SCBA Annual Flow Testing
07/12/2023
501000065032
SCBA Breathing Air Supply
07/27/2022
Corrective Action
Documents
501000080448
CR Breathing Air System is Degrading
01/03/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
501000084450
Fit Test Monitored Evolution Comment
04/23/2024
Corrective Action
Documents
Resulting from
Inspection
501000084455
NRC Health Physics Observations
04/24/2024
Grade D Testing
Grade D Testing for Plant Air and SCBA Compressors
2/27/2023
Miscellaneous
PINGP 252
(RPIP 1214)
Respirator Inspections for the Month of December 2023
FP-RP-RPP-02
Respirator Fit Testing and Portacount Fit Tester Operation
RPIP 1211
Charging MSA or Scott SCBA Air Cylinders
RPIP 1214
Respiratory Protection Equipment Testing
Procedures
RPIP 1216
MAX Air 2000-800 Respiratory Protection
Self-Assessments Snapshot Self-
Assessment for
Program Self-Assessment for Inspection Procedure 71124.03
Work Orders
700102048
Control Room Clean-up Ventilation Efficiency Test
03/09/2023
Calculations
606000001914
Prairie Island 2023 Isotopic Mix Report
501000074108
DLR Vendor Failed to Detect SDE
06/01/2023
Corrective Action
Documents
501000082610
Dose Discrepancies for Period 2, 2023
03/06/2024
Engineering
Evaluations
Technical Basis
Document#
20-001
SRD Bias
APEX / In-Vivo
Logbook
Summary
Whole Body Counter Log for January 2024 and
February 2024
03/07/2024
APEX / In-Vivo
Logbook
Summary
Whole Body Counter Log for May 2023 to December 2023
01/02/2024
Declared
Pregnant Worker
Evaluation for ID#
231460
PINGP 656 Prairie Island Fetal Protection Program
Evaluation
10/18/2022
Miscellaneous
Dosimetry
Discrepancy
Primary to Secondary Dose Discrepancy Review for 2023
04/22/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Review for 2023
Exposure
Correction
Radiation
Occurrence
Report for ID#
313426
Primary to Secondary Dosimetry Investigation Per QF3008
03/06/2024
Exposure
Correction
Radiation
Occurrence
Report for ID#
N151793
Primary to Secondary Dosimetry Investigation Per QF3008
03/05/2024
NLVAP
Accreditation for
Mirion
Technologies
NVLAP Accreditation for 10/03/2023-06/30/2024
10/03/2023
Personnel
Contamination
Event Review for
ID# 226834
PCE Evaluation Form QF1282
11/27/2023
FP-RP-DR-01
Sentinel DLR Issue & Managing Dose Records
FP-RP-IDA-01
Internal Dose Assessment
Procedures
FP-RP-WBC-01
Whole Body Counter Use and Functional Check
23 Annual Area
TLD Trending
Area Dosimetry Results and Trending
01/30/2024
Radioactive
Intake Screening
for ID# 301529
Internal Dose Evaluation Per QF1282
10/16/2023
Radioactive
Intake Screening
for ID# N128502
Internal Dose Evaluation Per QF1282
10/16/2023
Radiation
Surveys
Technical Basis
Document No. 17-
Prospective Dose Evaluation and Dose Reporting Threshold
Summary
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
001
Self-Assessments Snapshot Self-
Assessment
Program Self-Assessment for Inspection Procedure 71124.04
PI Summary
Report
Prairie Island Unit 1, Initiating Events, IE01 - Unplanned
Scams per 7,000 Critical Hours
06/2023 -
05/2024
71151
Miscellaneous
PI Summary
Report
Prairie Island Unit 2, Initiating Events, 1E01 - Unplanned
Scrams per 7,000 Critical Hours
06/2023 -
05/2024
Corrective Action
Documents
501000077533
Hourly Firewatch Round Missed on F5 APP
10/09/2023
Work Orders
INSP CV-31116 Valve Internals
10/30/2023
501000078473
CV-31116 As-Found Condition
11/01/2023
501000079065
2R33 ISI Indication CV-31116
11/16/2023
501000084473
Roll Up CAP for IA/SA Sys Issues
04/24/2024
Corrective Action
Documents
501000086471
Instrument Air System Health
06/08/2024
Corrective Action
Documents
501000082488
Unit 1 Reactor Trip
585121
Automatic Reactor Trip Due to a Loss of Suction in Main
Feedwater Pump
03/03/2024
Miscellaneous
QF0739, Request
Number 1
What Is the Difference in CCDP Between a Normal Reactor
Trip from 100% Power and a Normal Reactor Trip from
100% Power with Main Feedwater Pumps Failed (Unit 1)?
06/06/2024