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Category:Inspection Report
MONTHYEARIR 05000387/20240052024-08-29029 August 2024 Updated Inspection Plan for Susquehanna Steam Electric Station, Units 1 and 2 (Report 05000387/2024005 and 05000388/2024005) IR 05000387/20240022024-08-12012 August 2024 Integrated Inspection Report 05000387/2024002 and 05000388/2024002 IR 05000387/20240012024-05-13013 May 2024 Integrated Inspection Report 05000387/2024001 and 05000388/2024001 IR 05000387/20244042024-05-0707 May 2024 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000387/2024404 and 05000388/2024404 IR 05000387/20240112024-02-29029 February 2024 Commercial Grade Dedication Inspection Report 05000387/2024011 and 05000388/2024011 IR 05000387/20230062024-02-28028 February 2024 Annual Assessment Letter for Susquehanna Steam Electric Station, Units 1 and 2 (Reports 05000387/2023006 and 05000388/2023006) IR 05000387/20230042024-02-0707 February 2024 Integrated Inspection Report 05000387/2023004 and 05000388/2023004 IR 05000387/20230102023-12-11011 December 2023 Fire Protection Team Inspection Report 05000387/2023010 and 05000388/2023010 IR 05000387/20230032023-11-0303 November 2023 Integrated Inspection Report 05000387/2023003 and 05000388/2023003 IR 05000387/20233012023-09-20020 September 2023 Initial Operator Licensing Examination Report 05000387/2023301 and 05000388/2023301 IR 05000387/20230052023-08-31031 August 2023 Updated Inspection Plan for Susquehanna Steam Electric Station, Units 1 and 2 (Report 05000387/2023005 and 05000388/2023005) IR 05000387/20230022023-08-0101 August 2023 Integrated Inspection Report 05000387/2023002 and 05000388/2023002 IR 05000387/20234012023-06-0707 June 2023 Security Baseline Inspection Report 05000387/2023401 and 05000388/2023401 IR 05000387/20230012023-05-12012 May 2023 Integrated Inspection Report 05000387/2023001 and 05000388/2023001 IR 05000387/20220062023-03-0101 March 2023 Annual Assessment Letter for Susquehanna Steam Electric Station, Units 1 and 2 (Reports 05000387/2022006 and 05000388/2022006) IR 05000387/20220042023-02-0808 February 2023 Integrated Inspection Report 05000387/2022004 and 05000388/2022004 IR 07200028/20220012022-12-15015 December 2022 Independent Spent Fuel Storage Installation (ISFSI) - NRC Inspection Report No. 07200028/2022001 IR 05000387/20224032022-11-29029 November 2022 Security Baseline Inspection Report 05000387/2022403 and 05000388/2022403 IR 05000387/20225012022-11-28028 November 2022 Emergency Preparedness Biennial Exercise Inspection Report 05000387/2022501 and 05000388/2022501 IR 05000387/20220032022-11-0808 November 2022 Integrated Inspection Report 05000387/2022003 and 05000388/2022003 IR 05000387/20220052022-08-31031 August 2022 Updated Inspection Plan for Susquehanna Steam Electric Station, Units 1 and 2 (Report 05000387/2022005 and 05000388/2022005) IR 05000387/20220102022-08-11011 August 2022 Biennial Problem Identification and Resolution Inspection Report 05000387/2022010 and 05000388/2022010 IR 05000387/20224012022-08-11011 August 2022 Material Control and Accounting Program Inspection Report 05000387/2022401 and 05000388/2022401 (Cover Letter Only) IR 05000387/20220022022-08-0404 August 2022 Integrated Inspection Report 05000387/2022002 and 05000388/2022002 IR 05000387/20224042022-05-26026 May 2022 Information Request for the Cyber Security Baseline Inspection, Notification to Perform Inspection 05000387/2022404 and 05000388/2022404 IR 05000387/20220012022-05-0909 May 2022 Integrated Inspection Report 05000387/2022001 and 05000388/2022001 IR 05000387/20220112022-03-0707 March 2022 Post-Approval Site Inspection for License Renewal - Phase 2 Inspection Report 05000387/2022011 IR 05000387/20210062022-03-0202 March 2022 Annual Assessment Letter for Susquehanna Steam Electric Station, Units 1 and 2 (Reports 05000387/2021006 and 05000388/2021006) IR 05000387/20224022022-02-16016 February 2022 Security Baseline Inspection Report 05000387/2022402 and 05000388/2022402 IR 05000387/20214032022-02-11011 February 2022 Cyber Security Problem Identification and Resolution Inspection Report 05000387/2021403 and 05000388/2021403 (Cover Letter Only) IR 05000387/20210042022-02-11011 February 2022 Integrated Inspection Report 05000387/2021004 and 05000388/2021004 IR 05000387/20220132022-02-10010 February 2022 Information Request for a Triennial Baseline Design Bases Assurance Inspection (Team); Inspection Report 05000387/2022013 and 05000388/2022013 IR 05000387/20210102021-12-13013 December 2021 Design Basis Assurance Inspection (Programs) Inspection Report 05000387/2021010 and 05000388/2021010 IR 05000387/20210112021-11-0404 November 2021 Temporary Instruction 2515/194 Inspection Report 05000387/2021011 and 05000388/2021011 IR 05000387/20210032021-11-0303 November 2021 Integrated Inspection Report 05000387/2021003 and 05000388/2021003 IR 05000387/20214012021-10-25025 October 2021 Security Baseline Inspection Report 05000387/2021401 and 05000388/2021401 IR 05000387/20214022021-09-23023 September 2021 Security Baseline Inspection Report 05000387/2021402 and 05000388/2021402 IR 05000387/20213012021-09-17017 September 2021 Initial Operator Licensing Examination Report 05000387/2021301 and 05000388/2021301 IR 05000387/20210052021-09-0101 September 2021 Updated Inspection Plan for the Susquehanna Steam Electric Station, Units 1 and 2 (Report 05000387/2021005 and 05000388/2021005) ML21224A2402021-08-24024 August 2021 Security Baseline Inspection Report Cover Letter 2021 FOF IR 05000387/20210022021-08-0404 August 2021 Integrated Inspection Report 05000387/2021002 and 05000388/2021002 IR 05000387/20210012021-05-0505 May 2021 Integrated Inspection Report 05000387/2021001 and 05000388/2021001 IR 05000388/20210122021-03-0404 March 2021 EA-20-131: Susquehanna Steam Electric Station, Unit 2 - NRC Investigation Report No. 1-2020-001 and NRC Inspection Report No. 05000388/2021012 IR 05000387/20200062021-03-0303 March 2021 Annual Assessment Letter for Susquehanna Steam Electric Station, Units 1 and 2 (Reports 05000387/2020006 and 05000388/2020006) IR 05000387/20204032021-02-10010 February 2021 Cyber Security Problem Identification and Resolution Inspection Report 05000387/2020403 and 05000388/2020403 (Cover Letter Only) IR 05000387/20200042021-02-0808 February 2021 Integrated Inspection Report 05000387/2020004 and 05000388/2020004 IR 05000387/20205012020-11-18018 November 2020 Emergency Preparedness Biennial Exercise Inspection Report 05000387/2020501 and 05000388/2020501 IR 05000387/20200032020-11-0505 November 2020 Integrated Inspection Report 05000387/2020003 and 05000388/2020003 IR 05000387/20200122020-10-27027 October 2020 Triennial Fire Protection Inspection Report 05000387/2020012 and 05000388/2020012 IR 05000387/20200052020-08-31031 August 2020 Updated Inspection Plan (Inspection Reports 05000387/2020005 and 05000388/2020005) 2024-08-29
[Table view] Category:Letter
MONTHYEARML24289A1252024-10-22022 October 2024 – Authorized Alternative to Requirements of the ASME OM Code PLA-8145, Biennial 10 CFR 50.59 and 72.48 Summary Report and Changes to Regulatory Commitments - PLA-81452024-10-21021 October 2024 Biennial 10 CFR 50.59 and 72.48 Summary Report and Changes to Regulatory Commitments - PLA-8145 ML24291A1562024-10-16016 October 2024 Missed Annual Inventory Required by 40 CFR 266, Subpart in PLE 0026645 PLA-8148, Registration for the Use of Spent Fuel Storage Casks 311, 308, and 3102024-10-15015 October 2024 Registration for the Use of Spent Fuel Storage Casks 311, 308, and 310 PLA-8141, Response to Request for Additional Information Regarding Relief Request 1RR06, PLA-81412024-09-18018 September 2024 Response to Request for Additional Information Regarding Relief Request 1RR06, PLA-8141 PLA-8142, Registration for the Use of Spent Fuel Storage Casks 306, 309, and 307 - PLA-81422024-09-18018 September 2024 Registration for the Use of Spent Fuel Storage Casks 306, 309, and 307 - PLA-8142 ML24260A2312024-09-17017 September 2024 Senior Reactor and Reactor Operator Initial License Examinations 05000387/LER-2024-002, B Diesel Generator Inoperable Due to Failed Excitation System Linear Reactor2024-09-16016 September 2024 B Diesel Generator Inoperable Due to Failed Excitation System Linear Reactor ML24255A8642024-09-0606 September 2024 Rscc Wire & Cable LLC Dba Marmon Industrial Energy & Infrastructure - Part 21 Retraction of Final Notification ML24249A1362024-09-0404 September 2024 EN 57304 - Westinghouse Electric Company, LLC, Final Report - No Embedded Files. Notification of the Potential Existence of Defects Pursuant to 10 CFR Part 21 ML24233A2192024-09-0303 September 2024 – Authorized Alternative to Requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code IR 05000387/20240052024-08-29029 August 2024 Updated Inspection Plan for Susquehanna Steam Electric Station, Units 1 and 2 (Report 05000387/2024005 and 05000388/2024005) 05000387/LER-2023-004-01, Manual Reactor Scram Due to Degraded Main Condenser Vacuum2024-08-26026 August 2024 Manual Reactor Scram Due to Degraded Main Condenser Vacuum 05000387/LER-2024-001-01, Main Steam Isolation Valve Leakage Due to Valve Body Seat Wear2024-08-21021 August 2024 Main Steam Isolation Valve Leakage Due to Valve Body Seat Wear IR 05000387/20240022024-08-12012 August 2024 Integrated Inspection Report 05000387/2024002 and 05000388/2024002 ML24208A0962024-07-25025 July 2024 57243-EN 57243 - Rssc Wire & Cable LLC, Dba Marmon - Part 21 Notification PLA-8117, 23rd Refueling Outage Owners Activity Report (PLA-8117)2024-07-23023 July 2024 23rd Refueling Outage Owners Activity Report (PLA-8117) ML24197A0982024-07-15015 July 2024 Request for Information for a Biennial Problem Identification and Resolution Inspection; Inspection Report 05000387/2024010 and 05000388/2024010 PLA-8126, Response to Request for Confirmation of Information Regarding Relief Request 1RR062024-05-29029 May 2024 Response to Request for Confirmation of Information Regarding Relief Request 1RR06 ML24127A2262024-05-29029 May 2024 Issuance of Amendment Nos. 288 and 272 Adoption of TSTF-563 PLA-8122, Annual Radiological Environmental Operating Report (PLA-8122)2024-05-28028 May 2024 Annual Radiological Environmental Operating Report (PLA-8122) 05000387/LER-2024-001, Main Steam Isolation Valve Leakage2024-05-23023 May 2024 Main Steam Isolation Valve Leakage PLA-8115, Relief Request IRR06 One Time Extension to the Fourth 10-Year Inservice Testing Program Interval (PLA-8115)2024-05-23023 May 2024 Relief Request IRR06 One Time Extension to the Fourth 10-Year Inservice Testing Program Interval (PLA-8115) IR 05000387/20240012024-05-13013 May 2024 Integrated Inspection Report 05000387/2024001 and 05000388/2024001 IR 05000387/20244042024-05-0707 May 2024 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000387/2024404 and 05000388/2024404 PLA-8095, 2023 Annual Radiological Environmental Operating Report (PLA-8095)2024-04-22022 April 2024 2023 Annual Radiological Environmental Operating Report (PLA-8095) PLA-8094, Radioactive Effluent Release Report and Offsite Dose Calculation Manual PLA-80942024-04-22022 April 2024 Radioactive Effluent Release Report and Offsite Dose Calculation Manual PLA-8094 PLA-8101, Re 2023 Annual Report of Radiation Exposure2024-04-22022 April 2024 Re 2023 Annual Report of Radiation Exposure ML24082A1372024-04-22022 April 2024 Issuance of Amendment Nos. 287 and 271 Adoption of TSTF-568, Revision 2 and Associated Technical Specification Changes PLA-8102, Annual Environmental Operating Report (Nonradiological) PLA-81022024-04-11011 April 2024 Annual Environmental Operating Report (Nonradiological) PLA-8102 PLA-8113, Response to Request for Additional Information Regarding Relief Request 4RR-11 (PLA-8113)2024-04-11011 April 2024 Response to Request for Additional Information Regarding Relief Request 4RR-11 (PLA-8113) PLA-8112, Relief Request 4RR-11 Relief from End of Interval Boundary Leakage Test PLA-81122024-04-0909 April 2024 Relief Request 4RR-11 Relief from End of Interval Boundary Leakage Test PLA-8112 PLA-8110, Submittal of Unit 1 Cycle 24 Core Operating License Report (Pla 8110)2024-04-0404 April 2024 Submittal of Unit 1 Cycle 24 Core Operating License Report (Pla 8110) PLA-8100, Property Insurance Program (PLA-8100)2024-04-0101 April 2024 Property Insurance Program (PLA-8100) ML24092A4022024-04-0101 April 2024 Annual Financial Report (PLA-8098) PLA-8109, Supplement to Request for Exemption from Certain Requirements of 10 CR 72.212 and 10 CFR 72.214 Resulting from Fuel Basket Design Control Compliance (PLA-8109)2024-03-21021 March 2024 Supplement to Request for Exemption from Certain Requirements of 10 CR 72.212 and 10 CFR 72.214 Resulting from Fuel Basket Design Control Compliance (PLA-8109) PLA-8107, Request for Exemption from Certain Requirements of 10 CFR 72.212 and 10 CFR 72.214 Resulting from Fuel Basket Design Control Compliance2024-03-19019 March 2024 Request for Exemption from Certain Requirements of 10 CFR 72.212 and 10 CFR 72.214 Resulting from Fuel Basket Design Control Compliance ML24067A2512024-03-19019 March 2024 Authorized Alternative to Requirements of the ASME Code ML24044A2532024-03-14014 March 2024 Associated Independent Spent Fuel Storage Installation – Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0077 (Security Notifications, Reports, and Recordkeeping & Suspicious Activity Reporting)) IR 05000387/20240112024-02-29029 February 2024 Commercial Grade Dedication Inspection Report 05000387/2024011 and 05000388/2024011 IR 05000387/20230062024-02-28028 February 2024 Annual Assessment Letter for Susquehanna Steam Electric Station, Units 1 and 2 (Reports 05000387/2023006 and 05000388/2023006) ML24039A1882024-02-27027 February 2024 Issuance of Amendment Nos. 286 and 270 Changes to Technical Specifications for Control Rods ML24037A3072024-02-22022 February 2024 Summary of Regulatory Audit in Support of Relief Request 5RR-02 PLA-8099, Proof of Financial Protection and Guarantee of Payment of Deferred Premiums (PLA-8099)2024-02-13013 February 2024 Proof of Financial Protection and Guarantee of Payment of Deferred Premiums (PLA-8099) IR 05000387/20230042024-02-0707 February 2024 Integrated Inspection Report 05000387/2023004 and 05000388/2023004 05000387/LER-2023-004, Manual Reactor Scram Due to Degraded Main Condenser Vacuum2024-01-0909 January 2024 Manual Reactor Scram Due to Degraded Main Condenser Vacuum PLA-8096, Response to Request for Additional Information Regarding Proposed Relief Request for the Fifth 10-Year Inservice Test Program Interval2024-01-0404 January 2024 Response to Request for Additional Information Regarding Proposed Relief Request for the Fifth 10-Year Inservice Test Program Interval PLA-8077, Emergency Plan Revision 67 (PLA-8077)2023-12-27027 December 2023 Emergency Plan Revision 67 (PLA-8077) IR 05000387/20230102023-12-11011 December 2023 Fire Protection Team Inspection Report 05000387/2023010 and 05000388/2023010 PLA-8088, Request for Exemption from Enhanced Weapons, Firearms Background Checks and Security Event Notifications Implementation (PLA-8088)2023-12-0505 December 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks and Security Event Notifications Implementation (PLA-8088) 2024-09-06
[Table view] |
Text
December 5, 2016
Mr. TimothyPresident and Chief Nuclear Officer Susquehanna Nuclear, LLC 769 Salem Blvd - NUCSB3 Berwick, PA 18603-0467
SUBJECT: SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1 AND 2 EVALUATED EMERGENCY PREPAREDNESS EXERCISE INSPECTION REPORT NOS. 05000387/2016502 AND 05000388/2016502
Dear Mr. Rausch:
On October 21, 2016, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection of the October 18, 2016, evaluated emergency preparedness exercise at the Susquehanna Steam Electric Station, Units 1 and 2. The enclosed inspection report documents the inspection results, which were discussed on October 21, 2016, with you and other members of your staff. The inspection examined activities conducted under your licenses as they relate to safety and compliance with the Commission's rules and regulations and with the conditions of your licenses. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel. The NRC inspectors did not identify any findings or violations of more than minor significance. In accordance with Title 10 of the Code of Federal Regulations (10 CFR) 2.390, "Public Inspections, Exemptions, Requests for Withholding," of the NRC's "Rules of Practice," a copy of this letter, its enclosure, and your response (if any) will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of the NRC's Agencywide Documents Access and Management System (ADAMS).ADAMS is accessible from the NRC's Website at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,/RA/ Raymond R. McKinley, Chief Plant Support Branch 1 Division of Reactor Safety Docket Nos. 50-387 and 50-388 License Nos. NPF-14 and NPF-22
Enclosure:
Inspection Report 05000387/2016502 and 05000388/2016502 cc w/encl: Distribution via ListServ cc/w enclosure R. Flinn, Director, PA Emergency Management Agency (PEMA) T. Scardino, RAC Chair, FEMA Region III
SUMMARY
IR 05000387/2016502, 05000388/2016502; 10/17/2016-10/21/2016; Susquehanna Steam Electric Station, Units 1 and 2; Exercise Evaluation - Scenario Review - Performance Indicator Verification. This report covers an announced inspection conducted by four Region I-based inspectors and two resident inspectors. No findings were identified during the inspection. The NRC's program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, "Reactor Oversight Process," Revision 6.
Cornerstone: Emergency Preparedness
No findings were identified.
REPORT DETAILS
REACTOR SAFETY
Cornerstone:
Emergency Preparedness (EP)
1EP1 Exercise Evaluation
Main article: IP 71114.01
a. Inspection Scope
On October 18, 2016, Susquehanna Energy conducted a biennial Susquehanna emergency preparedness (EP) exercise. The inspectors evaluated the adequacy of Susquehanna's conduct of the exercise, the performance of Susquehanna's emergency response organization (ERO) to respond to the simulated emergency, and Susquehanna's capability to assess their own staff performance via a formal critique process, as required by Title 10 of the Code of Federal Regulations (CFR) 50.47(b)(14). This overall exercise inspection activity represented the completion of one sample on a biennial cycle.
The exercise evaluation consisted of the following review and assessment: The adequacy of Susquehanna's performance in the biennial full-participation exercise regarding the implementation of the risk-significant planning standards described in 10 CFR 50.47(b)(4), (5), (9), and (10), which are: emergency classification; offsite notification; radiological assessment; and protective action recommendations, respectively.
The overall adequacy of Susquehanna's emergency response facilities with regard to NUREG-0696, "Functional Criteria for Emergency Response Facilities," and Emergency Plan commitments. The facilities assessed were the Control Room Simulator, Technical Support Center, and Emergency Operations Facility.
A review of other performance areas, such as: Susquehanna's ERO's recognition of abnormal plant conditions; command and control; intra- and inter-facility communications; prioritization of mitigating activities; utilization of repair and field monitoring teams; interface with offsite agencies; staffing and procedure adequacy; and the overall implementation of the Susquehanna emergency plan and its implementing procedures.
A review of past performance issues from the last NRC Susquehanna exercise inspection report and Susquehanna's EP drill reports, to determine the effectiveness of Susquehanna's corrective actions as demonstrated during the October 18, 2016, exercise and to ensure compliance with 10 CFR 50.47(b)(14).
Susquehanna's post-exercise critiques, to evaluate Susquehanna's self-assessment of its ERO performance during the October 18, 2016, exercise and to ensure compliance with 10 CFR Part 50, Appendix E, Section IV.F.2.g. The inspectors reviewed the documents listed in the attachment to this report.
b. Findings
No findings were identified.
1EP8 Exercise Evaluation - Scenario Review
Main article: IP 71114.08
a. Inspection Scope
Prior to the October 18, 2016, EP Exercise, Susquehanna had submitted the exercise objectives and scenario to the NRC. The NRC inspectors conducted an in-office review of the submittal to determine if the exercise would adequately test major elements of the Susquehanna Emergency Plan as required by 10 CFR 50.47(b)(14). This overall exercise inspection activity represented the completion of one sample on a biennial cycle.
The inspectors reviewed the documents listed in the attachment to this report.
b. Findings
No findings were identified.
OTHER ACTIVITIES (OA)
4OA1 Performance Indicator (PI) Verification
a. Inspection Scope
The inspectors reviewed data for the Susquehanna EP performance indicators (PIs), which are: (1) Drill and Exercise Performance; (2) ERO Drill Participation; and, (3) Alert and Notification System Reliability. The last NRC EP inspection at Susquehanna was conducted in the fourth calendar quarter of 2015, so the inspectors reviewed supporting documentation from EP drills, training records, and equipment tests, from the fourth calendar quarter of 2015 through the third quarter of 2016, to verify the accuracy of the reported PI data. The review of these PIs was conducted in accordance with NRC Inspection Procedure 71151, using the acceptance criteria documented in Nuclear Energy Institute Document 99-02, "Regulatory Assessment Performance Indicator Guidelines," Revision 7. This inspection activity represented the completion of three samples.
b. Findings
No findings were identified.
4OA6 Meetings, including Exit
On October 21, 2016, the inspectors presented the results of this inspection to Mr. Timothy Rausch, President and Chief Nuclear Officer, and other members of the Susquehanna staff. No proprietary information was provided to the inspectors during this inspection.
ATTACHMENT:
SUPPLEMENTAL INFORMATION
KEY POINTS OF CONTACT
Licensee Personnel
- T. Rausch, President and Chief Nuclear Officer
- J. Gorman, Nuclear Emergency Preparedness Manager
LIST OF ITEMS OPENED, CLOSED, AND DISCUSSED
None.
LIST OF DOCUMENTS REVIEWED
Section 1EP1: Exercise Evaluation
- Susquehanna Steam Electric Station Emergency Preparedness Plan, Revision 59 Susquehanna Steam Electric Station Emergency Preparedness Plan Implementing Procedures Susquehanna Steam Electric Station Emergency Preparedness Evaluated Exercise Scenario
- PLA-7509 Susquehanna Emergency Response Drill Reports, January 2015 - September 2016 Susquehanna Steam Electric Station Emergency Plan Drill Report PLI-95794
Section 1EP8: Exercise Evaluation - Scenario Review Susquehanna Steam Electric Station Emergency Preparedness Plan, Revision 59
- Susquehanna Steam Electric Station Emergency Preparedness Evaluated Exercise Scenario
- PLA-7509
- EP-104, SSES Drill and Exercise Program, Revision 7
Section 4OA1: Performance Indicator (PI) Verification
- EP-114, Emergency Preparedness Performance Indicators, Revision 1 DEP PI data, October 2015 - September 2016 ERO Drill Participation PI data, October 2015 - September 2016 ANS Reliability PI data, October 2015 - September 2016
- CFR Code of Federal Regulations
- EP Emergency Preparedness
- ERO Emergency Response Organization
- NRC Nuclear Regulatory Commission PI Performance Indicator