|
---|
Category:Inspection Report
MONTHYEARIR 05000277/20240032024-11-0404 November 2024 Integrated Inspection Report 05000277/2024003 and 05000278/2024003 IR 05000277/20240052024-08-29029 August 2024 Updated Inspection Plan for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2024005 and 05000278/2024005) IR 05000277/20240102024-08-23023 August 2024 Fire Protection Team Inspection Report 05000277/2024010 and 05000278/2024010 IR 05000482/20240052024-08-14014 August 2024 Updated Inspection Plan for Wolf Creek Generating Station (Report 05000482/2024005) IR 05000277/20240022024-08-14014 August 2024 Integrated Inspection Report 05000277/2024002 and 05000278/2024002 IR 05000277/20243012024-06-13013 June 2024 Initial Operator Licensing Examination Report 05000277/2024301 and 05000278/2024301 IR 05000277/20240012024-05-13013 May 2024 Integrated Inspection Report 05000277/2024001 and 05000278/2024001 IR 05000277/20245012024-05-0808 May 2024 Emergency Preparedness Biennial Exercise Inspection Report 05000277/2024501 and 05000278/2024501 IR 05000277/20244022024-03-12012 March 2024 Cybersecurity Inspection Report 05000277/2024402 and 05000278/2024402 (Cover Letter Only) IR 05000277/20230062024-02-28028 February 2024 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Reports 05000277/2023006 and 05000278/2023006) IR 05000171/20230012024-02-20020 February 2024 Constellation Energy Generation, LLC - Peach Bottom Atomic Power Station, Unit 1 - NRC Inspection Report No. 05000171/2023001 IR 05000277/20230042024-02-12012 February 2024 Integrated Inspection Report 05000277/2023004 and 05000278/2023004 IR 05000277/20234022024-01-11011 January 2024 Security Baseline Inspection Report 05000277/2023402 and 05000278/2023402 and Independent Spent Fuel Storage Installation Security Inspection 07200029/2023401 IR 05000277/20230032023-10-30030 October 2023 Integrated Inspection Report 05000277/2023003 and 05000278/2023003 and Exercise of Enforcement Discretion IR 05000277/20244012023-10-0505 October 2023 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000277/2024401 and 05000278/2024401 IR 05000277/20230102023-09-15015 September 2023 Biennial Problem Identification and Resolution Inspection Report 05000277/2023010 and 05000278/2023010 and Notice of Violation ML23251A2022023-09-11011 September 2023 Cover Letter W/Report IR 05000277/20230052023-08-31031 August 2023 Updated Inspection Plan for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2023005 and 05000278/2023005) IR 05000277/20230112023-08-15015 August 2023 Comprehensive Engineering Team Inspection Report 05000277/2023011 and 05000278/2023011 IR 05000277/20230022023-08-0808 August 2023 Integrated Inspection Report 05000277/2023002 and 05000278/2023002 IR 05000277/20230402023-07-17017 July 2023 95001 Inspection Supplemental Report 05000277/2023040 and Follow-Up Assessment Letter IR 05000277/20230012023-05-0808 May 2023 Integrated Inspection Report 05000277/2023001 and 05000278/2023001 IR 05000277/20220042023-04-0505 April 2023 Acknowledgement of Dispute of Green Finding - NRC Inspection Report 05000277/2022004 and 05000278/2022004 IR 05000277/20234012023-03-27027 March 2023 Security Baseline Inspection Report 05000277/2023401 and 05000278/2023401 IR 05000277/20230122023-03-10010 March 2023 Title 10 of the Code of Federal Regulations 50.69 Risk-Informed Categorization and Treatment of Structures, Systems, and Components Inspection Report 05000277/2023012 and 05000278/2023012 IR 05000277/20220062023-03-0101 March 2023 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Reports 05000277/2022006 and 05000278/2022006) ML23033A3332023-02-0202 February 2023 Integrated Inspection Report 05000277/2022004 and 05000278/2022004 IR 05000171/20220012023-01-0404 January 2023 Constellation Energy Generation, LLC, Peach Bottom Atomic Power Station, Unit 1 - NRC Inspection Report 05000171/2022001 IR 05000277/20220902022-11-28028 November 2022 Final Significance Determination of a White Finding with Assessment Follow-Up and Notice of Violation, Inspection Report 05000277/2022090 IR 05000277/20220032022-10-27027 October 2022 Integrated Inspection Report 05000277/2022003 and 05000278/2022003 and Preliminary White Finding and Apparent Violation IR 05000277/20224012022-09-27027 September 2022 Material Control and Accounting Program Inspection Report 05000277/2022401 and 05000278/2022401 (Cover Letter Only) IR 05000277/20220052022-08-31031 August 2022 Updated Inspection Plan for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2022005 and 05000278/2022005) IR 05000277/19570012022-08-19019 August 2022 631999-Termination License 50-27757-01 for G. Scott Crowther Dba Crowther Associates IR 07200079/20224042022-08-0404 August 2022 NRC Security Inspection Report 07200079/2022404 (Cover Letter) IR 05000277/20223012022-07-28028 July 2022 Initial Operator Licensing Examination Report 05000277/2022301 and 05000278/2022301 IR 05000277/20220022022-07-28028 July 2022 Integrated Inspection Report 05000277/2022002 and 05000278/2022002 IR 05000277/20224032022-07-13013 July 2022 Cyber Security Inspection Report 05000277/2022403 and 05000278/2022403 (Cover Letter Only) IR 05000277/20224022022-06-15015 June 2022 Security Baseline Inspection Report 05000277/2022402 and 05000278/2022402 and Independent Spent Fuel Storage Installation Security Inspection Report 07200029/2022401 (Cover Letter Only) IR 05000277/20225012022-06-0808 June 2022 Emergency Preparedness Biennial Exercise Inspection Report 05000277/2022501 and 05000278/2022501 IR 05000277/20220112022-05-18018 May 2022 Design Basis Assurance Inspection (Programs) Inspection Report 05000277/2022011 and 05000278/2022011 ML22117A0362022-04-27027 April 2022 Integrated Inspection Report 05000277/2022001 and 05000278/2022001 IR 05000482/20220012022-04-25025 April 2022 Integrated Inspection Report 05000482/2022001 and Independent Spent Fuel Storage Installation Inspection Report 07200079/2022001 IR 05000277/20210062022-03-0202 March 2022 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Reports 05000277/2021006 and 05000278/2021006) IR 05000277/20210042022-02-0909 February 2022 Integrated Inspection Report 05000277/2021004 and 05000278/2021004 IR 05000482/20210042022-01-19019 January 2022 Integrated Inspection Report 05000482/2021004 and Independent Spent Fuel Storage Installation Inspection Report 07200079/2021002 IR 05000171/20210012022-01-12012 January 2022 Safstor Inspection Report 05000171/2021001 IR 05000277/20223022022-01-10010 January 2022 Operator Licensing Retake Examination Report 05000277/2022302 and 05000278/2022302 IR 05000277/20210032021-11-0909 November 2021 Integrated Inspection Report 05000277/2021003 and 05000278/2021003 IR 05000482/20210032021-11-0505 November 2021 Integrated Inspection Report 05000482/2021003 and Independent Spent Fuel Storage Installation Inspection Report 07200079/2021001, WC2021003 IR Ch IR 07200079/20214012021-10-21021 October 2021 ISFSI Security Inspection Report 07200079/2021401 2024-08-29
[Table view] Category:Letter
MONTHYEARIR 05000277/20240032024-11-0404 November 2024 Integrated Inspection Report 05000277/2024003 and 05000278/2024003 RS-24-093, Response to Request for Additional Information - Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests2024-10-10010 October 2024 Response to Request for Additional Information - Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests ML24284A2842024-10-10010 October 2024 (Wcgs), Revision of One Form That Implements the Radiological Emergency Response Plan (RERP) ML24281A1012024-10-0707 October 2024 Senior Reactor and Reactor Operator Initial License Examinations ML24275A2442024-10-0303 October 2024 Reassignment of the U.S. Nuclear Regulatory Commission Branch Chief, Division of Operating Reactor Licensing ML24240A1692024-09-18018 September 2024 Cy 2023 Summary of Decommissioning Trust Fund Status ML24221A2582024-09-0606 September 2024 Response to Request for Re-Engagement Regarding the Subsequent License Renewal Environmental Review for Peach Bottom Atomic Power Station, Units 2 and 3 ML24255A8642024-09-0606 September 2024 Rscc Wire & Cable LLC Dba Marmon Industrial Energy & Infrastructure - Part 21 Retraction of Final Notification 05000277/LER-2024-003, Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum2024-09-0505 September 2024 Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum IR 05000277/20240052024-08-29029 August 2024 Updated Inspection Plan for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2024005 and 05000278/2024005) ML24239A3972024-08-23023 August 2024 Rssc Wire & Cable LLC Dba Marmon - Part 21 Final Notification - 57243-EN 57243 IR 05000277/20240102024-08-23023 August 2024 Fire Protection Team Inspection Report 05000277/2024010 and 05000278/2024010 ML24235A0342024-08-23023 August 2024 U.S. Nuclear Regulatory Commission’S Analysis of Constellation Energy Generation’S Decommissioning Funding Status Report IR 05000482/20240052024-08-14014 August 2024 Updated Inspection Plan for Wolf Creek Generating Station (Report 05000482/2024005) IR 05000277/20240022024-08-14014 August 2024 Integrated Inspection Report 05000277/2024002 and 05000278/2024002 ML24225A1692024-08-12012 August 2024 10 CFR 50.46 Annual Report ML24222A6772024-08-0909 August 2024 Response to Request for Additional Information for Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition ML24214A3232024-08-0101 August 2024 Response to Request for Additional Information - Request for Alternative Schedule to Complete Decommissioning Beyond 60 Years of Permanent Cessation of Operations ML24208A0962024-07-25025 July 2024 57243-EN 57243 - Rssc Wire & Cable LLC, Dba Marmon - Part 21 Notification ML24206A1252024-07-24024 July 2024 Revision of Three Procedures and Two Forms That Implement the Radiological Emergency Response Plan (RERP) ML24191A0612024-07-0606 July 2024 Independent Spent Fuel Storage Installation (ISFSI) - Annual Radioactive Effluent Release Report ML24178A4142024-06-26026 June 2024 Revision of One Procedure and One Form That Implement the Radiological Emergency Response Plan (RERP) ML24178A3672024-06-26026 June 2024 Correction to 2023 Annual Radioactive Effluent Release Report – Report 47 ML24177A1512024-06-24024 June 2024 Post Accident Monitoring Instrumentation Report ML24166A1172024-06-20020 June 2024 Regulatory Audit Summary Regarding Proposed Alternative Schedule to Complete Decommissioning Beyond 60 Years RS-24-061, Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations2024-06-14014 June 2024 Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations IR 05000277/20243012024-06-13013 June 2024 Initial Operator Licensing Examination Report 05000277/2024301 and 05000278/2024301 RS-24-058, Regarding Subsequent License Renewal Environmental Review2024-06-0505 June 2024 Regarding Subsequent License Renewal Environmental Review ML24151A6482024-06-0303 June 2024 Changes in Reactor Decommissioning Branch Project Management Assignments for Some Decommissioning Facilities ML24150A2722024-05-29029 May 2024 Annual Radiological Environmental Operating Report 81, January 1, 2023 Through December 31, 2023 ML24150A0032024-05-28028 May 2024 Request for Exemptions from 10 CFR 50.82(a)(8)(i)(A) and 10 CFR 50.75(h)(1)(iv) and Proposed Amendment to the Decommissioning Trust Agreement ML24079A0762024-05-23023 May 2024 Issuance of Amendments to Adopt TSTF 264 RS-24-055, 2023 Corporate Regulatory Commitment Change Summary Report2024-05-17017 May 2024 2023 Corporate Regulatory Commitment Change Summary Report IR 05000277/20240012024-05-13013 May 2024 Integrated Inspection Report 05000277/2024001 and 05000278/2024001 ML24134A1792024-05-13013 May 2024 Supplemental Information in Support of Request for Alternative Schedule to Complete Decommissioning Beyond 60 Years of Permanent Cessation of Operations IR 05000277/20245012024-05-0808 May 2024 Emergency Preparedness Biennial Exercise Inspection Report 05000277/2024501 and 05000278/2024501 RS-24-041, Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests2024-04-30030 April 2024 Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests ML24121A1832024-04-30030 April 2024 Pre-Submittal Meeting Presentation Material Peach Bottom ECCS Compensated Level System Replacement Project ML24118A0032024-04-27027 April 2024 2023 Annual Radioactive Effluent Release Report - Report 47 ML24120A2762024-04-23023 April 2024 Independent Spent Fuel Storage Installation (ISFSI) Facility - Annual Radioactive Effluent Release Report 66 January 1, 2023 Through December 31, 2023 CNL-24-033, Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2024-04-17017 April 2024 Central Emergency Control Center Emergency Plan Implementing Procedure Revisions ML24107A2462024-04-15015 April 2024 Submittal of Changes to Technical Specifications Bases ML24103A2042024-04-12012 April 2024 Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition ML24102A0472024-04-11011 April 2024 Operator Licensing Examination Approval 05000277/LER-2024-002, Uncoordinated DC Circuits Cause Unanalyzed Condition2024-04-0808 April 2024 Uncoordinated DC Circuits Cause Unanalyzed Condition RS-24-002, Constellation Energy Generation, LLC - Annual Property Insurance Status Report2024-04-0101 April 2024 Constellation Energy Generation, LLC - Annual Property Insurance Status Report RS-24-023, Report on Status of Decommissioning Funding.2024-03-22022 March 2024 Report on Status of Decommissioning Funding. IR 05000277/20244022024-03-12012 March 2024 Cybersecurity Inspection Report 05000277/2024402 and 05000278/2024402 (Cover Letter Only) ML24061A2642024-03-0101 March 2024 Revision of Two Procedures That Implement the Radiological Emergency Response Plan (RERP) for Wolf Creek Generating Station (WCGS) Commissioners ML24060A1192024-02-29029 February 2024 Notification of Conduct of a Fire Protection Team Inspection 2024-09-06
[Table view] |
Text
June 6, 2016
Mr. Bryan Hanson Senior Vice President, Exelon Generation President and Chief Nuclear Officer, Exelon Nuclear 4300 Winfield Rd.
Warrenville, IL 60555
SUBJECT: PEACH BOTTOM ATOMIC POWER STATION - EVALUATED EMERGENCY PREPAREDNESS EXERCISE INSPECTION REPORT
05000277/2016502 AND 05000278/2016502
Dear Mr. Hanson:
On April 29, 2016, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection of the April 27, 2016, evaluated emergency preparedness exercise at your Peach Bottom Atomic Power Station (PBAPS). The enclosed inspection report documents the inspection results, which were discussed on April 29, 2016, with Mr. Michael Massaro, Peach Bottom Site Vice President, 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.
Based on the results of this inspection, no findings were identified.
In accordance with Title 10 of the Code of Federal Regulation (10 CFR) 2.390 of the NRC's "Rules of Practice," a copy of this letter and 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 document system, Agencywide Documents Access and Management System (ADAMS). ADAMS is accessible from the NRC Web site 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. 50-277 and 50-278 License Nos. DPR-44 and DPR-56
Enclosure:
Inspection Report No. 05000277/2016502 and 05000278/2016502 cc w/encl: Distribution via ListServ G. Cannon, Director, PA Emergency Management Agency (PEMA) and Office of Homeland Security Advisor J. Price, (Acting) RAC Chair, DHS Region III R. Ayers, Deputy Mgr, Harford County Div of Emergency Operations S. Ayers, Emergency Planner, Harford County Div of Emergency Operations R. Brooks, Director, Cecil County Dept of Emergency Services T. Scardino, RAC Chair, FEMA Region III
ML16158A301 SUNSI Review Non-Sensitive Sensitive Publicly Available Non-Publicly Available OFFICE RI/DRS RI/DRP RI/DRS NAME SBarr/JPD for DSchroeder/DLS RMcKinley/RRM DATE 6/3/16 6/3/16 6/6/16
1 Enclosure U.S. NUCLEAR REGULATORY COMMISSION REGION I
Docket Nos. 50-277 and 50-278 License Nos. DPR-44 and DPR-56 Report Nos. 05000277/2016502 and 05000278/2016502 Licensee: Exelon Generation Company, LLC (Exelon)
Facility: Peach Bottom Atomic Power Station, Units 2 and 3
Location: Delta, Pennsylvania
Dates: April 26 - 29, 2016
Inspectors: S. Barr, Senior Emergency Preparedness Inspector, Division of Reactor Safety (DRS), Region I (Lead) J. DeBoer, Emergency Preparedness Inspector, DRS, Region I D. Everhart, Physical Security Inspector, DRS, Region I T. Dunn, Operations Inspector, DRS, Region I J. Heinly, Senior Resident Inspector, Peach Bottom, Division of Reactor Projects, Region I
Approved By: Raymond R. McKinley, Chief Plant Support Branch 1 Division of Reactor Safety 2
SUMMARY OF FINDINGS
Inspection Report 05000277/2016502 and 05000278/2016502; 04/26/2016 - 04/29/2016; Peach Bottom Atomic Power Station (Peach Bottom), Units 2 and 3; Exercise Evaluation; Exercise Evaluation - Scenario Review; Performance Indicator Verification.
This was an announced inspection conducted by four Region I-based inspectors and one resident inspector. 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 5.
Cornerstone: Emergency Preparedness
No findings were identified.
3
REPORT DETAILS
REACTOR SAFETY
Cornerstone:
Emergency Preparedness (EP)
1EP1 Exercise Evaluation
Main article: IP 71114.01
a. Inspection Scope
On April 27, 2016, Exelon conducted a biennial Peach Bottom emergency preparedness exercise. The inspectors evaluated the adequacy of the licensee's conduct of the exercise, the performance of the Peach Bottom emergency response organization (ERO) to respond to the simulated emergency, and Exelon'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 Exelon's performance in the biennial full-participation exercise regarding the implementation of the planning standards described in 10 CFR 50.47(b)(4), (5), (9), and (10), which are: emergency classification; offsite notification; radiological assessment; onsite protective actions; and public protective action recommendations, respectively.
The overall adequacy of Exelon's emergency response facilities with regard to Emergency Plan commitments. The emergency response facilities assessed were: the Control Room Simulator, the Technical Support Center, and the Emergency Operations Facility.
A review of other performance areas, such as: the licensee 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 th e emergency plan and its implementing procedures.
A review of past performance issues from the last NRC Peach Bottom exercise inspection report and Exelon's EP drill reports, to determine the effectiveness of licensee corrective actions as demonstrated during the April 27, 2016, exercise and to ensure compliance with 10 CFR 50.47(b)(14).
A review of the licensee's post-exercise critiques, to evaluate Exelon's self-assessment of its Peach Bottom ERO performance during the April 27, 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.
ATTACHMENT:
SUPPLEMENTAL INFORMATION
KEY POINTS OF CONTACT
Licensee Personnel
- M. Massaro, Peach Bottom Site Vice President
- V. Cwietniewicz, Exelon Mid-Atlantic Emergency Planning Manager
- N. Alexakos, Peach Bottom Emergency Planning Manager
LIST OF ITEMS OPENED, CLOSED, AND DISCUSSED
None.
LIST OF DOCUMENTS REVIEWED
Section 1EP1: Exercise Evaluation
- EP-AA-1000, Exelon Nuclear Standardized Emergency Plan, Revision 26
- EP-AA-1007, Peach Bottom Atomic Power Station Emergency Plan Annex, Revision 28
- EP-AA-122, Drill and Exercise Program, Revision 15
- EP-AA-122-200, Drill and Exercise Execution, Revision 0
- EP-AA-122-300, Drill and Exercise Evaluation, Revision 0
- Peach Bottom Emergency Plan lmplementing Procedures Peach Bottom April 27, 2016, Emergency Exercise Scenario Package Peach Bottom Emergency Preparedness Drill Reports, January 2015 - March 2016 Condition Reports generated as a result of the April 27, 2016, exercise
(As documented in Peach Bottom Graded Exercise Evaluation Report, dated May 26, 2016)
Section 1EP8: Exercise Evaluation - Scenario Review
- EP-AA-1000, Exelon Nuclear Standardized Emergency Plan, Revision 24
- EP-AA-1007, Peach Bottom Atomic Power Station Emergency Plan Annex, Revision 28
- EP-AA-122, Drill and Exercise Program, Revision 15
- EP-AA-122-100, Drill and Exercise Planning and Scheduling, Revision 0
- Peach Bottom April 27, 2016, Emergency Exercise Scenario Package
Section 4OA1: Performance Indicator (PI) Verification
- LS-AA-2110, Monthly Data Elements for NRC Emergency Response Organization (ERO) Drill
- Participation, Revision 6
- LS-AA-2120, Monthly Data Elements for NRC Drill/Exercise Performance, Revision 4
- LS-AA-2130, Monthly Data Elements for NRC Alert and Notification System (ANS)
- Reliability, Revision 5
- EP-AA-125-1001, EP Performance Indicator Guidance, Revision 7
- DEP PI data, January 2015 - March 2016
- ERO Drill Participation PI data, January 2015 - March 2016
- ANS Reliability PI data, January 2015 - March 2016
- CFR Code of Federal Regulations
- EP Emergency Preparedness
- ERO emergency response organization
- NRC Nuclear Regulatory Commission,
- U.S. [[]]
- PI performance indicator