12-14-2017 | On October 24, 2017 at 1350 EDT, with the plant in Mode 1 at 100 percent power, H. B. Robinson Steam Electric Plant, Unit No. 2 (HBRSEP2), discovered an uncompensated security vulnerability that could have allowed unauthorized or undetected access to a vital area ( VA) of the plant. Compensatory measures were promptly established and an immediate investigation was conducted, which did not reveal any evidence of unauthorized entry or tampering.
The cause of this event is attributed to the absence of work instructions to contact security to establish compensatory measures prior to beginning work activities high on a VA barrier wall. The vulnerability was the result of authorized work. All workers involved were validated to have proper permissions to access the area. No unauthorized access to the VA occurred during the time period that the vulnerability existed. This event did not have any nuclear or personal safety implications.
This report is being submitted in accordance with the requirements of 10 CFR 73.71(d), which refers to Appendix G, "Reportable Safeguards Events," Section 1(c). |
---|
|
---|
Category:Letter
MONTHYEARIR 05000261/20230042024-01-31031 January 2024 Integrated Inspection Report 05000261/2023004 ML24009A2432024-01-25025 January 2024 Unit, No. 2 - Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0047 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)) ML24009A2712024-01-24024 January 2024 Revision to Reactor Vessel Material Surveillance Capsule Withdrawal Schedule ML23354A0052024-01-0808 January 2024 Request for Withholding Information from Public Disclosure, H. B. Robinson Steam Electric Plant, Unit No. 2 ML23342A0902023-12-0808 December 2023 Notification of Inspection and Request for Information for NRC Problem Identification and Resolution Inspection IR 05000261/20234202023-11-30030 November 2023 Security Baseline Inspection Report 05000261/2023420 (Cover Letter with Report) IR 05000261/20230102023-11-28028 November 2023 Fire Protection Team Inspection Report 05000261/2023010 ML23317A3462023-11-14014 November 2023 Duke Fleet - Correction Letter to License Amendment Nos. 312 & 340 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-554, Revision 1 IR 05000261/20230032023-11-0707 November 2023 Integrated Inspection Report 05000261 2023003 and 07200060 2023001 ML23226A0862023-10-12012 October 2023 Issuance of Amendment No. 277 Regarding Revision of TSs to Add High-High Steam Generator Level Function to Table 3.3.2-1 and Remove Obsolete Content from TSs 2.1.1.1 and 5.6.5.b ML23346A1322023-10-0606 October 2023 Communication from C-10 Research & Education Foundation Regarding NextEra Common Emergency Fleet Plan License Amendment Request and Related Documents Subsequently Published ML23256A0882023-09-25025 September 2023 Issuance of Alternative to Steam Generator Welds ML23195A0782023-08-29029 August 2023 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-554, Revision 1 ML23235A0552023-08-23023 August 2023 Notification of an Fire Protection Team Inspection (FPTI) (NRC Inspection Report 05000261/2023010) and Request for Information (RFI) IR 05000261/20230052023-08-21021 August 2023 Updated Inspection Plan for H.B. Robinson Steam Electric Plant (Report 05000261/2023005) IR 05000261/20230022023-08-0707 August 2023 Integrated Inspection Report 05000261/2023002 IR 05000261/20234022023-05-30030 May 2023 Cyber Security Inspection Report 05000261/2023402 ML23145A1602023-05-25025 May 2023 Submittal of Updated Final Safety Analysis Report (Revision No. 30), Independent Spent Fuel Storage Installation Safety Analysis Report (Revision No. 28), Technical Specifications Bases Revisions, Quality IR 05000261/20230012023-05-0202 May 2023 Integrated Inspection Report 05000261/2023001 ML23118A0762023-05-0101 May 2023 Approval for Use of Specific Provision of a Later Edition of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI ML22332A4932023-03-10010 March 2023 William States Lee III 1 and 2 - Issuance of Amendments Regarding the Relocation of the Emergency Operations Facility IR 05000261/20220062023-03-0101 March 2023 Annual Assessment Letter for H.B. Robinson Steam Electric Plant, Unit 2 (Report 05000261/2022006) ML23047A4512023-02-21021 February 2023 Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection 05000261/2023402 ML23041A2272023-02-13013 February 2023 2022 Q4 Robinson_Workflow Final ML22329A2982023-01-19019 January 2023 Issuance of Amendment No. 274 Regarding Revision of Technical Specification 3.8.1 Surveillance Requirement 3.8.1.16 ML22294A0922022-12-15015 December 2022 Issuance of Amendment No. 273 Regarding Adoption of TSTF-577, Revised Frequencies for Steam Generator Tube Inspections, Revision 1 ML22339A1362022-12-0101 December 2022 2023 Requalification Program Inspection - H.B. Robinson Nuclear Plant ML22322A1322022-11-18018 November 2022 301, NRC Operator License Examination Report & Cover Letter Merged ML22096A0032022-11-18018 November 2022 McGuire Nuclear Station and Shearon Harris Nuclear Power Plant Authorization of RA-19-0352 Regarding Use of Alternative for RPV Head Closure Stud Examinations ML22256A2532022-11-14014 November 2022 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-541, Rev. 2 IR 05000261/20220032022-11-0303 November 2022 Integrated Inspection Report 05000261 2022003 IR 05000261/20224022022-10-19019 October 2022 Security Baseline Inspection Report 05000261/2022402 IR 05000261/20220102022-09-26026 September 2022 Design Basis Assurance Inspection (Teams) Inspection Report 05000261/2022010 IR 05000261/20223012022-09-23023 September 2022 301 Operator License Exam Approval Letter (05000261/2022301) ML22258A0302022-09-15015 September 2022 Evacuation Time Estimate Reports IR 05000261/20220052022-08-26026 August 2022 Updated Inspection Plan for the H.B Robinson Steam Electric Plant - Report 05000261/2022005-Final IR 05000261/20214042022-08-10010 August 2022 Reissue - H.B. Robinson Steam Electric Plant Security Baseline Inspection Report 05000261/2021404 IR 05000261/20220022022-08-0909 August 2022 Integrated Inspection Report 05000261 2022002, 07200060 2022001 and Exercise of Enforcement Discretion ML22213A0682022-08-0505 August 2022 Request for Withholding Information from Public Disclosure for H. B. Robinson Steam Electric Plant, Unit 2 ML22193A2122022-08-0404 August 2022 Request of Alternatives to ASME Code Section XI Subsection IWE Requirements for Containment Inspections ML22159A2952022-08-0303 August 2022 Issuance of Amendment No. 271 Regarding Correction to Non-Conservative Technical Specifications Figure 3.4.3-2, Pressure/Temperature Limit Cooldown Curves IR 05000261/20220112022-07-19019 July 2022 Biennial Problem Identification and Resolution Inspection Report 05000261/2022011 ML22167A1702022-07-14014 July 2022 Closeout of Generic Letter 2004 02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors ML22046A0222022-06-14014 June 2022 Issuance of Amendments to Adopt TSTF-439, Eliminate Second Completion Times Limiting Time from Discovery of Failure to Meet an LCO ML22125A1942022-05-12012 May 2022 Request for Withholding Information from Public Disclosure for H.B. Robinson Steam Electric Plant, Unit 2 IR 05000261/20220012022-05-0202 May 2022 Integrated Inspection Report 05000261/2022001 IR 05000261/20224012022-04-19019 April 2022 Security Baseline Inspection Report 05000261/2022401 ML22098A2262022-04-11011 April 2022 Notification of Inspection and Request for Information for NRC Problem Identification and Resolution Inspection ML22083A0032022-03-29029 March 2022 Closeout of Bulletin 2012 01, Design Vulnerability in Electric Power System IR 05000261/20210062022-03-0202 March 2022 Annual Assessment Letter for H.B. Robinson Steam Electric Plant Unit 2 (Report No. 05000261/2021006) 2024-01-08
[Table view] Category:Licensee Event Report (LER)
MONTHYEARRA-19-0384, LER 20190-001-00 for H.B. Robinson Steam Electric Plant, Unit 2, Turbine Trip/Reactor Trip Due to Main Generator Lockout2019-10-0909 October 2019 LER 20190-001-00 for H.B. Robinson Steam Electric Plant, Unit 2, Turbine Trip/Reactor Trip Due to Main Generator Lockout 05000261/LER-2017-0022017-12-14014 December 2017 Plant Vital Area Security Vulnerability Discovered Without Compensatory Security Measures, LER 17-002-00 for H.B. Robinson, Unit 2, Regarding Plant Vital Area Security Vulnerability Discovered Without Compensatory Security Measures 05000261/LER-2017-0012017-06-0101 June 2017 Auxiliary Feedwater System Actuation During Surveillance Testing, LER 17-001-00 for H.B. Robinson, Unit 2, Regarding Auxiliary Feedwater System Actuation During Surveillance Testing 05000261/LER-2016-0052017-02-22022 February 2017 Reactor Trip and Automatic System Actuation Due to Weather-Related Grid Disturbance, LER 16-005-01 for H. B. Robinson Steam Electric Plant, Unit 2 Regarding Reactor Trip and Automatic System Actuation Due to Weather-Related Grid Disturbance 05000261/LER-2016-0022016-06-13013 June 2016 Unanalyzed Condition Related to Main Steam Line Break Inside Containment, LER 16-002-00 for H.B. Robinson Steam Electric Plant, unit No. 2, Regarding Unanalyzed Condition Related to Main Steam Line Break Inside Containment 05000261/LER-2016-0012016-03-21021 March 2016 Inoperability of Motor-Driven Auxiliary Feedwater Pumps Due to Insufficient Lube Oil Cooling, LER 16-001-00 for H.B. Robinson, Unit 2, Regarding Inoperability of Motor-Driven Auxiliary Feedwater Pumps Due to Insufficient Lube Oil Cooling RNP-RA/11-0057, LER 011-001-00 for H. B. Robinson, Unit 2, Regarding Condition Prohibited by Technical Specifications When Non-Seismic System Was Aligned to Refueling Water Storage Tank Due to Regulatory Requirements Not Adequately Incorporated in Pl2011-06-30030 June 2011 LER 011-001-00 for H. B. Robinson, Unit 2, Regarding Condition Prohibited by Technical Specifications When Non-Seismic System Was Aligned to Refueling Water Storage Tank Due to Regulatory Requirements Not Adequately Incorporated in Plant Do 2019-10-09
[Table view] |
comments regarding burden estimate to the Information Services Branch (T-2 F43), U.S. Nuclear Regulatory Commission, Washington, DC 20555.0001, or by e-mail to used to impose an information collection does not dispiay a currently valid OMB control number, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
2017 H. B. Robinson Steam Electric Plant, Unit No. 2 261
3. LER NUMBER
00 05000-
BACKGROUND
Pursuant to the provisions of 10 CFR 73.71(b)(1), licensees shall report the discovery of uncompensated vulnerability in a safeguard system that could allow unauthorized or undetected access to a vital area within one hour of discovery. This report is being submitted in accordance with the requirements of 10 CFR 73.71(d), which refers to Appendix G, "Reportable Safeguards Events," Section 1(c), requiring a written report to be submitted within 60 days. The event described below meets this reporting criteria.
EVENT DESCRIPTION
On October 24, 2017, with H. B. Robinson Steam Electric Plant, Unit No. 2 (HBRSEP2) in Mode 1 at 100 percent power, a security officer conducting security rounds discovered a breach in the south wall of the 4kV switchgear room, a vital area (VA). This breach exceeded the threshold for requiring compensatory security measures to be implemented. No compensatory security measures were in place for the breach at the time of discovery. The officer immediately contacted security supervision and all work was stopped. Compensatory security measures were promptly implemented. At approximately 1350 EDT on October 24, 2017, it was determined that a breach in a VA boundary existed due to the size of the opening, which could have potentially allowed undetected access in the area. An immediate (1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />) notification to the NRC (EN No. 53034) was made on October 24, 2017.
On April 27, 2017 an Engineering Change (EC) related to the Transmission Upgrade Project was approved. This EC contains eight sub-ECs; particularly, a sub-EC to install structural supports [SPT] for the electrical bus duct [BDUC] and raceways [TY] from the 4kV disconnect [DISC] switches to the new switchgear building 469. Security performed a review of the main EC but not the sub-EC that called for the opening to be cut, which did not indicate a need for additional security measures. This sub-EC was not required by the EC process to be reviewed by other organizations; including Security.
On October 20, 2017, workers began cutting the opening in the south wall of the 4kV switchgear room with no compensatory security measures in place. The opening was then shielded with a metal cover plate and sealed to prevent water intrusion. On October 24, 2017, the shield was removed prior to installing the support through the opening. When the cover was removed, a security officer conducting security rounds discovered the breach in the south wall at the ceiling near the top of the erected scaffolding. The officer notified security supervision immediately. Work was stopped, a new shield was installed over the opening, and security supervision implemented required compensatory measures.
CAUSAL FACTORS
The cause of the event was determined to be the removal of the requirement for planners to include instruction for the craft to contact security when breaching the VA, including the threshold for breach size that requires additional security compensatory measures.
CORRECTIVE ACTIONS
Immediate Upon discovery of the breach by security, work was immediately stopped and compensatory measures were promptly implemented. A search of the area was conducted by security, which revealed no evidence of unauthorized materials or workers in the area.
comments regarding burden estimate to the Information Services Branch (T-2 F43), U.S. Nuclear Regulatory Commission, Washington. DC 20555.0001, or by e-mail to Infocollects.Resource©nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, used to mpose an information collection does not display a currently valid OMB control number, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
2017 H. B. Robinson Steam Electric Plant, Unit No. 2 261
3. LER NUMBER
002 00 05000- CORRECTIVE ACTIONS (continued) Completed 1. Current work order tasks were reviewed to ensure the work planning group requires craft workers to contact security for any required compensatory measures related to barrier work.
2. Guidance was added to the work-planning procedure to notify security prior to creating openings of any size in structures or barriers into the owner-controlled area, protected area, or VA.
SAFETY ANALYSIS
There were no safety consequences from this event in that unauthorized intrusion into the 4kV switchgear room VA did not occur. During the period without compensatory security measures in place, no evidence of contraband or sabotage was found within the 4kV switchgear room. This event has low safety significance because there was no undetected access to the VA nor was there any evidence of contraband, tampering or sabotage in the VA. In the event that the equipment in the 4kV switchgear room was compromised, the plant could still be safely shut down via power from Emergency Buses [BU] E-1 and E-2.
ADDITIONAL INFORMATION
Additional information required for security events. (Item number from Regulatory Guide 5.62, "Reporting of Safeguard Events," provided below):
5. Type of Security Force Onsite: Proprietary 6. Number and Type of Personnel Involved: One Security Officer 7. Method of Discovery: Security Officer Observation 8. Procedural Errors Involved: None 11. Local, State, or Federal law enforcement agencies contacted: None 12. Description of media interest and press release: None 13. Similar Events: None Energy Industry Identification System (EIIS) codes are identified in the Text within brackets [ ]