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| #REDIRECT [[NL-11-0853, Special Report 2011-001-01, Inoperable Radiation Monitor 1 RE-0006]] | | {{Adams |
| | | number = ML111460576 |
| | | issue date = 05/24/2011 |
| | | title = Special Report 2011-001-01, Inoperable Radiation Monitor 1 RE-0006 |
| | | author name = Tynan T E |
| | | author affiliation = Southern Nuclear Operating Co, Inc |
| | | addressee name = |
| | | addressee affiliation = NRC/Document Control Desk, NRC/NRR |
| | | docket = 05000424 |
| | | license number = |
| | | contact person = |
| | | case reference number = NL-11-0853 |
| | | document type = Environmental Monitoring Report, Letter |
| | | page count = 4 |
| | }} |
| | |
| | =Text= |
| | {{#Wiki_filter:Southern Nuclear May 24,2011 Docket Nos.: NL-11-0853 U. S. Nuclear Regulatory Commission A TTl\!: Document Control Desk Washington, D. C. 20555-0001 Vogtle Electric Generating Plant, Unit Special Report 2011*001-01, Inoperable Radiation Monitor 1 Ladies and Gentlemen: I n a letter dated March 29, 2011, Southern Nuclear Operating Company (SNC) submitted Special Report 2011-001-00 (Unit 1) in accordance with Technical Specification 5.6.8. At the time the Special Report was submitted, the return-to-service date for the containment high range radiation monitor (1 RE-0006) was not known, since a firm delivery date was not then available for the damaged cable. A firm delivery date has since been established for the cable, enabling determination of the date the containment high range radiation monitor will be returned to Operable status. The enclosed revised Special Report. 2011-001-01, includes this information. |
| | Additionally the Special Report was revised to correct the plant tag numbers for the referenced radiation monitors. |
| | This letter contains no NRC commitments. |
| | If you have any questions, please contact Doug McKinney at (205) 992-5982. |
| | Respectfully submitted, T. Tynan Vice President Vogtle TET ffMH/kss |
| | |
| | ==Enclosure:== |
| | |
| | Special Report 2011-001-01 (Unit 1) Southern Nuclear Operating Company Mr. J. T. Gasser. Executive Vice President Ms. P. M. Marino, Vice President |
| | -Engineering RType: CVC7000 U. S. Nuclear Regulatory Mr. V.M. McCree, Regional Mr. P. G. Boyle, NRR Project Manager -Mr. M. Cain, Senior Resident Inspector |
| | - |
| | Vogtle Electric Generating Plant, Unit Special Report 2011-001-01, Inoperable Radiation Monitor 1 Special Report 2011-001-01 (Unit Vogtle Electric Generating Plant, Unit Special Report 2011-001-01, Inoperable Radiation Monitor 1 Special Report 2011-001-01 (Unit On August 18, 2010 Vogtle Electric Generating Plant submitted a Special Report (2010-001-00) in accordance with Technical Specification 5.6.8 due to the containment high range radiation monitor 1 RE-0006 not being restored to operable status. Due to ALARA considerations, planned repairs on the radiation monitor were delayed until the subsequent refueling outage 1 R16 which was scheduled for the spring of 2011. During refueling outage 1 R16, repairs were attempted on 1 RE-0006. The circuit for 1 RE-0006 inside containment basically consists of three components. |
| | These components are the detector, a cable that runs from the detector to a junction box located behind the pressurizer cubicle and a second cable that runs from the junction box to the containment penetration. |
| | Both of these cables are specialized cables that are ordered to a specified length with specialized environmentally qualified connectors. |
| | Although the original repair plan consisted of replacing the detector only, a spare cable for each location was available in warehouse stores. Following replacement of the detector in 1 R16 and prior to returning the loop to service, it was identified that both cables located inside containment required replacement. |
| | Therefore, work immediately began during 1 R16 to replace these cables. However, when the cables were checked out of warehouse stores and tested, one of these spare cables was also identified as being unsuitable for use. Consequently only the cable that runs from the detector to the junction box located behind the pressurizer cubicle was replaced. |
| | A replacement cable has been ordered for the cable that runs from the junction box to the containment penetration, but there is a long lead time associated with it. As a result. the containment radiation high range monitor 1 RE-0006 will not be returned to service upon exiting the 1 R16 refueling outage as originally planned. However. upon delivery, this cable can be installed and terminated with the unit at power and the loop returned to service. There is adequate distance and shielding at both the containment penetration and junction box located behind the pressurizer cubicle, to minimize radiation dose to maintenance personnel. |
| | Additionally, both the replacement detector and the newly installed cable that runs from the detector to the junction box have been calibrated and verified to be functioning acceptably. |
| | Containment High Range Radiation Monitor 1 RE-0006 will not be returned to operable status at the conclusion of refueling outage 1 R16 as originally planned. Technical Specification LCO 3.3.3 is applicable in Modes 1,2 and 3. Technical Specification LCO 3.3.3 Condition B requires the monitor to be restored to Operable status within 30 days. If the monitor is not returned to Operable status within 30 days, LCO 3.3.3 Condition G requires a SpeCial Report to be submitted in accordance with Technical Specification |
| | |
| | ====5.6.8 within==== |
| | the following 14 days. Since one of the two required Containment Radiation high range monitors 1 0006, will not be returned to Operable status during refueling outage 1 R 16, this Special Report is being submitted in accordance with Technical Specification 5.S.B. While Containment Radiation High Range Monitor 1 RE-OOOS is inoperable. |
| | Containment Radiation High Range Monitor 1 RE-0005 remains operable and would provide an alternate means of determining radiation levels in containment following an accident. |
| | Additionally, the containment low range radiation monitors (1 RE-0002 and 1 RE-0003) are available and are capable of detecting radiation levels up to 5400 mRlhr. Also, 1 RE-0006 is currently functional and providing indication but the cabling used does not meet the required environmental qualifications. |
| | A replacement cable has been ordered and is being expedited. |
| | However. due to the type of cable and the specialty connectors required. |
| | the cable is not scheduled to be delivered to the plant site until January 1S, 2012. Based upon this delivery date, it is anticipated that containment high range radiation monitor 1 RE-OOOS will be returned to Operable status by February 16, 2012.}} |
|
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Category:Environmental Monitoring Report
MONTHYEARNL-23-0310, Annual Non-Radiological Environmental Operating Reports and Annual Radioactive Effluent Release Reports for 20222023-04-25025 April 2023 Annual Non-Radiological Environmental Operating Reports and Annual Radioactive Effluent Release Reports for 2022 NL-22-0344, Annual Radiological Environmental Operating Reports for 20212022-05-10010 May 2022 Annual Radiological Environmental Operating Reports for 2021 NL-21-0399, Annual Non-Radiological Environmental Operating Reports and Annual Radioactive Effluent Release Reports for 20202021-04-26026 April 2021 Annual Non-Radiological Environmental Operating Reports and Annual Radioactive Effluent Release Reports for 2020 ND-21-0366, Submittal of Pressure and Temperature Limits Report2021-04-14014 April 2021 Submittal of Pressure and Temperature Limits Report NL-20-0548, Submittal of Annual Radiological Environmental Operating Reports for 20192020-05-13013 May 2020 Submittal of Annual Radiological Environmental Operating Reports for 2019 NL-20-0419, Edwin I.Hatch Nuclear Station, Units 1 & 2; Joseph M. Farley Nuclear Station, Units 1 & 2; and Vogtle Electric Station, Units 1 & 2 - Annual Non-Radiological Environmental Operating Reports and Annual Radioactive Effluent Release Reports2020-04-27027 April 2020 Edwin I.Hatch Nuclear Station, Units 1 & 2; Joseph M. Farley Nuclear Station, Units 1 & 2; and Vogtle Electric Station, Units 1 & 2 - Annual Non-Radiological Environmental Operating Reports and Annual Radioactive Effluent Release Reports Fo NL-19-1126, Modified NPDES Permit2019-09-19019 September 2019 Modified NPDES Permit NL-18-0558, Annual Non-Radiological Environmental Operating Reports, Annual Radioactive Effluent Release Reports, and Offsite Dose Calculation Manual for 20172018-04-25025 April 2018 Annual Non-Radiological Environmental Operating Reports, Annual Radioactive Effluent Release Reports, and Offsite Dose Calculation Manual for 2017 NL-18-0237, Independent Spent Fuel Storage Installation - Submittal of 2017 Annual Radioactive Effluent Release Report2018-02-22022 February 2018 Independent Spent Fuel Storage Installation - Submittal of 2017 Annual Radioactive Effluent Release Report NL-17-0845, Submittal of Annual Radiological Environmental Operating Reports for 20162017-05-15015 May 2017 Submittal of Annual Radiological Environmental Operating Reports for 2016 NL-17-0580, and Vogtle, Annual Non-Radioactive Environmental Operating Reports, Annual Radioactive Effluent Release Reports, and Offsite Dose Calculation Manual for 20162017-04-26026 April 2017 and Vogtle, Annual Non-Radioactive Environmental Operating Reports, Annual Radioactive Effluent Release Reports, and Offsite Dose Calculation Manual for 2016 NL-16-0741, Annual Radiological Environmental Operating Report for 2015 - Page 1 of 22016-05-16016 May 2016 Annual Radiological Environmental Operating Report for 2015 - Page 1 of 2 ML16145A3782016-05-16016 May 2016 Annual Radiological Environmental Operating Report for 2015 - Page 2 of 2 NL-16-0651, Annual Non-Radioactive Environmental Operating Reports for 20152016-04-27027 April 2016 Annual Non-Radioactive Environmental Operating Reports for 2015 NL-16-0644, Annual Radioactive Effluent Release Reports and Offsite Dose Calculation Manual for 20152016-04-27027 April 2016 Annual Radioactive Effluent Release Reports and Offsite Dose Calculation Manual for 2015 NL-16-0258, ISFSIs - Annual Radioactive Effluent Release Report2016-02-25025 February 2016 ISFSIs - Annual Radioactive Effluent Release Report NL-15-0877, Submittal of Annual Radiological Environmental Operating Reports for 20142015-05-15015 May 2015 Submittal of Annual Radiological Environmental Operating Reports for 2014 ML15125A0542015-04-30030 April 2015 J. M. Farley, E. I. Hatch and Vogtle - Submittal of Annual Radioactive Effluent Release Reports for 2014 NL-15-0803, J. M. Farley, E. I. Hatch and Vogtle - Submittal of Annual Radioactive Effluent Release Reports for 20142015-04-30030 April 2015 J. M. Farley, E. I. Hatch and Vogtle - Submittal of Annual Radioactive Effluent Release Reports for 2014 NL-15-0803, Annual Radioactive Effluent Release Report for 2014, Enclosure 32014-12-31031 December 2014 Annual Radioactive Effluent Release Report for 2014, Enclosure 3 NL-14-0740, Annual Radiological Environmental Operating Reports for 20132014-05-13013 May 2014 Annual Radiological Environmental Operating Reports for 2013 NL-14-0658, Annual Non-Radiological Environmental Operating Reports for 20132014-04-29029 April 2014 Annual Non-Radiological Environmental Operating Reports for 2013 NL-13-1006, Annual Radiological Environmental Operating Reports for 20122013-05-15015 May 2013 Annual Radiological Environmental Operating Reports for 2012 NL-13-0745, Submittal of Annual Non-Radiological Environmental Operating Reports for 20122013-04-30030 April 2013 Submittal of Annual Non-Radiological Environmental Operating Reports for 2012 NL-13-0889, Annual Radioactive Effluent Release Report for 20122013-04-30030 April 2013 Annual Radioactive Effluent Release Report for 2012 NL-12-0773, Annual Non-Radiological Environmental Operating Reports for 20112012-04-24024 April 2012 Annual Non-Radiological Environmental Operating Reports for 2011 NL-11-0853, Special Report 2011-001-01, Inoperable Radiation Monitor 1 RE-00062011-05-24024 May 2011 Special Report 2011-001-01, Inoperable Radiation Monitor 1 RE-0006 NL-11-0888, Annual Radiological Environmental Operating Reports for 20102011-05-12012 May 2011 Annual Radiological Environmental Operating Reports for 2010 NL-11-0865, Annual Non-Radiological Environmental Operating Reports for 20102011-04-30030 April 2011 Annual Non-Radiological Environmental Operating Reports for 2010 NL-11-0811, Annual Radioactive Effluent Release Reports for 2010, Page 2-26 Through End2011-04-29029 April 2011 Annual Radioactive Effluent Release Reports for 2010, Page 2-26 Through End NL-10-0905, Enclosure 3 - Vogtle, Units 1 and 2, Annual Radiological Environmental Operating Report for 20092010-05-14014 May 2010 Enclosure 3 - Vogtle, Units 1 and 2, Annual Radiological Environmental Operating Report for 2009 NL-10-0839, Submittal of Annual Non-Radiological Environmental Operating Report for 20092010-04-28028 April 2010 Submittal of Annual Non-Radiological Environmental Operating Report for 2009 NL-09-0775, Annual Radiological Environmental Operating Reports for 20082009-05-14014 May 2009 Annual Radiological Environmental Operating Reports for 2008 ML0912606892009-04-27027 April 2009 Annual Radioactive Effluent Release Reports for 2008 ML0912606912009-04-27027 April 2009 Annual Radioactive Effluent Release Reports for 2008, Enclosure 4 Farley Offsite Dose Calculation Manual (ODCM) - Version 23 and Vogtle ODCM - Version 24 NL-09-0378, Joseph M. Farley Nuclear Plant and Vogtle Electric Generating Plant - Annual Non-Radiological Environmental Operating Report for 20082009-04-22022 April 2009 Joseph M. Farley Nuclear Plant and Vogtle Electric Generating Plant - Annual Non-Radiological Environmental Operating Report for 2008 NL-08-0771, Southern Nuclear Operating Company, Inc, Annual Radiological Environmental Operating Reports for 20072008-05-13013 May 2008 Southern Nuclear Operating Company, Inc, Annual Radiological Environmental Operating Reports for 2007 NL-08-0726, Annual Non-Radiological Environmental Operating Report for 20072008-05-0101 May 2008 Annual Non-Radiological Environmental Operating Report for 2007 NL-08-0668, Annual Radioactive Effluent Release Reports for 20072008-04-29029 April 2008 Annual Radioactive Effluent Release Reports for 2007 ML0733006452007-09-14014 September 2007 Groundwater Monitoring Report - Plant Vogtle Landfills #3, Solid Waste Permit Nos. 017-007D(L)(I), Burke County, Georgia, September 2007 ML0733006392007-09-14014 September 2007 Groundwater Monitoring Report - Plant Vogtle Landfills #2, Solid Waste Permit Nos. 017-006D(L)(I), Burke County, Georgia, September 2007 ML0735304932007-09-11011 September 2007 Response to NRC Letter Dated 08/22/07, Renewal of Operating Licenses for Vogtle Electric Generating Plant, Units 1 & 2. Forwards List of Federally-protected Species Under Jurisdiction of National Marine Fisheries Service for the State of Ge ML0733006472007-07-0505 July 2007 Plant Vogtle Landfills #3, Solid Waste Permit Nos. 017-007D(L)(I), Periodic Methane Monitoring Report for Second Quarter 2007 NL-07-0778, Submittal of Annual Radioactive Effluent Release Reports for 20062007-04-30030 April 2007 Submittal of Annual Radioactive Effluent Release Reports for 2006 ML0712204712007-04-30030 April 2007 Enclosure 3, Vogtle, Units 1 & 2 - Annual Radioactive Effluent Release Report for 2006 NL-07-0772, Plants, Annual Non-Radiological Environmental Operating Reports for 20062007-04-11011 April 2007 Plants, Annual Non-Radiological Environmental Operating Reports for 2006 ML0733006442007-03-0909 March 2007 Groundwater Monitoring Report - Plant Vogtle Landfill #3, Solid Waste Permit Nos. 017-007D(L)(I), Burke County, Georgia, March 2007 ML0733006382007-03-0909 March 2007 Groundwater Monitoring Report - Plant Vogtle Landfills #2 and #3, Solid Waste Permit Nos. 017-006D(L)(I), Burke County, Georgia, March 2007 ML0630002232006-12-0101 December 2006 Executive Summary for Groundwater Drawdown Calculations Included in Vogtle ESP Er Sections 4.2.2 and 5.2.2 Groundwater Use Impacts During Construction and Operation ML0733006372006-09-28028 September 2006 Groundwater Monitoring Report - Plant Vogtle Landfills #2, Solid Waste Permit Nos. 017-006D(L)(I), Burke County, Georgia, September 2006 2023-04-25
[Table view] Category:Letter
MONTHYEARML24032A0252024-02-0505 February 2024 NRC Initial Test Program and Operational Programs Integrated Inspection Report 05200026-2023009 ML24010A0712024-01-31031 January 2024 Exemption from Select Requirements of 10 CFR Part 73 (Security Notifications, Reports and Recordkeeping and Suspicious Activity Reporting) ML24031A6102024-01-31031 January 2024 Cyber Security Inspection Report 05200026/2024401 - Public ML24029A0592024-01-30030 January 2024 Request for Withholding Information from Public Disclosure Responses to NRC Request for Additional Information for Refueling Outage 1R24 Steam Generator Tube Inspection Report Enclosure 2, GAE-NRCD-RF-LR-000002 P-Attachment, Rev. 0 ML24016A1132024-01-30030 January 2024 Correction of Unit 1 Amendment Nos. 96 and 190 and Unit 2 Amendment Nos. 74 and 173 Adoption of Standard Technical Specifications Westinghouse Plants NL-24-0031, Inservice Inspection Program Owner'S Activity Report (OAR-1) for Outage 2R232024-01-29029 January 2024 Inservice Inspection Program Owner'S Activity Report (OAR-1) for Outage 2R23 IR 05000424/20244032024-01-26026 January 2024 Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection 05000424/2024403; 05000425/2024403 NL-24-0020, Plan, Unit 1 Responses to NRC Request for Additional Information for Refueling Outage 1R24 Steam Generator Tube Inspection Report2024-01-22022 January 2024 Plan, Unit 1 Responses to NRC Request for Additional Information for Refueling Outage 1R24 Steam Generator Tube Inspection Report ML23347A2092024-01-17017 January 2024 Voluntary Requests for Data, Information, And/Or Observation ML23279A0042024-01-17017 January 2024 Amendment No. 194 to Remove Combined License Appendix C NL-23-0926, Correction of Technical Specification Typographical Error2024-01-12012 January 2024 Correction of Technical Specification Typographical Error ML23341A2042024-01-12012 January 2024 Request for Additional Information Exemption Requests for Physical Barriers (EPID L-2023-LLE-0018 & L-2023-LLE-0021) ML23345A1312024-01-0303 January 2024 Withholding Letter - SNC Fleet - Physical Barriers Exemption (L-2023-LLE-0018 and L-2023-LLE-0021) ML23317A2072023-12-22022 December 2023 Issuance of Amendments 223 and 206 Regarding Revision to Technical Specifications to Adopt TSTF-339-A, Relocate Technical Specification Parameters to the COLR Consistent with WCAP-1448 ML23335A1222023-12-19019 December 2023 Safety Evaluation Regarding Implementation of Mitigating Strategies Related to Order EA-12-049 (EPID L-2023-LRQ-0002) - Letter ML23353A1702023-12-19019 December 2023 LAR-22-002, TS 3.8.3 Inverters Operating Completion Time Extension Letter ML23310A2922023-12-0707 December 2023 Issuance of Amendment for Exception to Regulatory Guide 1.163, LAR 23 007 ML23339A1812023-12-0707 December 2023 Correction Letter Regarding License Amendment Request: More Restrictive Action for Technical Specification 3.1.9 ML23338A2182023-12-0606 December 2023 Project Manager Reassignment NL-23-0878, Request for Exemption from Security Event Notification Implementation2023-11-29029 November 2023 Request for Exemption from Security Event Notification Implementation ML23289A1632023-11-28028 November 2023 Letter and Amendment 195 and 192 LAR-23-006R1 TS 3.1.9 More Restrictive Action NL-23-0827, Response to Requests for Additional Information for a License Amendment Request and a Proposed Alternative Related to TS 3.4.142023-11-17017 November 2023 Response to Requests for Additional Information for a License Amendment Request and a Proposed Alternative Related to TS 3.4.14 ML23318A4582023-11-14014 November 2023 Integrated Inspection Report 05200025/2023003 ML23312A3502023-11-14014 November 2023 Integrated Inspection Report 05200026/2023003 ML23306A3552023-11-0808 November 2023 NRC Initial Test Program and Operational Programs Integrated Inspection Report 052000/262023008 ML23268A0572023-11-0707 November 2023 Issuance of Amendments 194 & 191 Request for License Amendment Relocation of Technical Specification 3.7.9, Spent Fuel Pool Makeup Water Sources (LAR-23-003) IR 05000424/20234022023-11-0606 November 2023 Security Baseline Inspection Report 05000424/2023402 and 05000425/2023402 IR 05000424/20230032023-10-27027 October 2023 Integrated Inspection Report 05000424/2023003 and 05000425/2023003 ML23291A1512023-10-18018 October 2023 Information Request for the Cyber Security Baseline Inspection, Notification to Perform Inspection 0520026/2024401 ML23263A9852023-10-12012 October 2023 Issuance of Amendments Nos. 221 and 204, Regarding Technical Specification 5.5.11.C, Acceptance Criteria for Charcoal Filter Testing ML23283A0472023-10-0808 October 2023 Neop Letter Dated October 8, 2023 - Vogtle 3 & 4 - TS 3.7.6 License Amendment Request NL-23-0750, Response to Second Request for Additional Information Regarding License Amendment Request: Technical Specification Revision to Adopt TSTF-339-A, Relocate Technical Specification Parameters to the Colr2023-10-0404 October 2023 Response to Second Request for Additional Information Regarding License Amendment Request: Technical Specification Revision to Adopt TSTF-339-A, Relocate Technical Specification Parameters to the Colr NL-23-0745, Refueling Outage 1R24 Steam Generator Tube Inspection Report2023-09-22022 September 2023 Refueling Outage 1R24 Steam Generator Tube Inspection Report ML23254A2032023-09-13013 September 2023 Initial Test Program and Operational Programs Inspection Report 05200025/2023013 ML23241B0212023-09-12012 September 2023 Review of Quality Assurance Topical Report ML23234A2352023-09-0808 September 2023 Request for Withholding Information from Public Disclosure Notification of Full Compliance of Required Action for NRC Order EA-12-049 Mitigation Strategies for Beyond-Design-Basis External Events IR 05000424/20230912023-09-0505 September 2023 Plan Units 1 and 2 - NRC Investigation Report 2-2022-006 and Notice of Violation - NRC Inspection Report 05000424/2023091 and 05000425/2023091 ML23234A3002023-09-0101 September 2023 NRC Integrated Inspection Report 05200026/2023003 ML23243A0092023-08-31031 August 2023 Updated Inspection Plan for Vogtle Electric Generating Plant, Units 3 & 4 (Report 05200025 2023005 & 05200026 2023005) NL-23-0695, Response to Round 2 Request for Additional Information Regarding License Amendment Request for Technical Specification 3.8.3, Inverters Operating, Completion Time Extension (LAR-22-002S2)2023-08-31031 August 2023 Response to Round 2 Request for Additional Information Regarding License Amendment Request for Technical Specification 3.8.3, Inverters Operating, Completion Time Extension (LAR-22-002S2) ML23243B0252023-08-30030 August 2023 Exam Corporate Notification Letter (210 Day) IR 05000424/20230052023-08-29029 August 2023 Updated Inspection Plan for Vogtle Electric Generating Plant, Units 1 & 2 - Report 05000424/2023005 and 05000425/2023005 NL-23-0666, License Amendment Request: Remove Combined License Appendix C (LAR 23-008)2023-08-28028 August 2023 License Amendment Request: Remove Combined License Appendix C (LAR 23-008) 2024-02-05
[Table view] |
Text
Southern Nuclear May 24,2011 Docket Nos.: NL-11-0853 U. S. Nuclear Regulatory Commission A TTl\!: Document Control Desk Washington, D. C. 20555-0001 Vogtle Electric Generating Plant, Unit Special Report 2011*001-01, Inoperable Radiation Monitor 1 Ladies and Gentlemen: I n a letter dated March 29, 2011, Southern Nuclear Operating Company (SNC) submitted Special Report 2011-001-00 (Unit 1) in accordance with Technical Specification 5.6.8. At the time the Special Report was submitted, the return-to-service date for the containment high range radiation monitor (1 RE-0006) was not known, since a firm delivery date was not then available for the damaged cable. A firm delivery date has since been established for the cable, enabling determination of the date the containment high range radiation monitor will be returned to Operable status. The enclosed revised Special Report. 2011-001-01, includes this information.
Additionally the Special Report was revised to correct the plant tag numbers for the referenced radiation monitors.
This letter contains no NRC commitments.
If you have any questions, please contact Doug McKinney at (205) 992-5982.
Respectfully submitted, T. Tynan Vice President Vogtle TET ffMH/kss
Enclosure:
Special Report 2011-001-01 (Unit 1) Southern Nuclear Operating Company Mr. J. T. Gasser. Executive Vice President Ms. P. M. Marino, Vice President
-Engineering RType: CVC7000 U. S. Nuclear Regulatory Mr. V.M. McCree, Regional Mr. P. G. Boyle, NRR Project Manager -Mr. M. Cain, Senior Resident Inspector
-
Vogtle Electric Generating Plant, Unit Special Report 2011-001-01, Inoperable Radiation Monitor 1 Special Report 2011-001-01 (Unit Vogtle Electric Generating Plant, Unit Special Report 2011-001-01, Inoperable Radiation Monitor 1 Special Report 2011-001-01 (Unit On August 18, 2010 Vogtle Electric Generating Plant submitted a Special Report (2010-001-00) in accordance with Technical Specification 5.6.8 due to the containment high range radiation monitor 1 RE-0006 not being restored to operable status. Due to ALARA considerations, planned repairs on the radiation monitor were delayed until the subsequent refueling outage 1 R16 which was scheduled for the spring of 2011. During refueling outage 1 R16, repairs were attempted on 1 RE-0006. The circuit for 1 RE-0006 inside containment basically consists of three components.
These components are the detector, a cable that runs from the detector to a junction box located behind the pressurizer cubicle and a second cable that runs from the junction box to the containment penetration.
Both of these cables are specialized cables that are ordered to a specified length with specialized environmentally qualified connectors.
Although the original repair plan consisted of replacing the detector only, a spare cable for each location was available in warehouse stores. Following replacement of the detector in 1 R16 and prior to returning the loop to service, it was identified that both cables located inside containment required replacement.
Therefore, work immediately began during 1 R16 to replace these cables. However, when the cables were checked out of warehouse stores and tested, one of these spare cables was also identified as being unsuitable for use. Consequently only the cable that runs from the detector to the junction box located behind the pressurizer cubicle was replaced.
A replacement cable has been ordered for the cable that runs from the junction box to the containment penetration, but there is a long lead time associated with it. As a result. the containment radiation high range monitor 1 RE-0006 will not be returned to service upon exiting the 1 R16 refueling outage as originally planned. However. upon delivery, this cable can be installed and terminated with the unit at power and the loop returned to service. There is adequate distance and shielding at both the containment penetration and junction box located behind the pressurizer cubicle, to minimize radiation dose to maintenance personnel.
Additionally, both the replacement detector and the newly installed cable that runs from the detector to the junction box have been calibrated and verified to be functioning acceptably.
Containment High Range Radiation Monitor 1 RE-0006 will not be returned to operable status at the conclusion of refueling outage 1 R16 as originally planned. Technical Specification LCO 3.3.3 is applicable in Modes 1,2 and 3. Technical Specification LCO 3.3.3 Condition B requires the monitor to be restored to Operable status within 30 days. If the monitor is not returned to Operable status within 30 days, LCO 3.3.3 Condition G requires a SpeCial Report to be submitted in accordance with Technical Specification
5.6.8 within
the following 14 days. Since one of the two required Containment Radiation high range monitors 1 0006, will not be returned to Operable status during refueling outage 1 R 16, this Special Report is being submitted in accordance with Technical Specification 5.S.B. While Containment Radiation High Range Monitor 1 RE-OOOS is inoperable.
Containment Radiation High Range Monitor 1 RE-0005 remains operable and would provide an alternate means of determining radiation levels in containment following an accident.
Additionally, the containment low range radiation monitors (1 RE-0002 and 1 RE-0003) are available and are capable of detecting radiation levels up to 5400 mRlhr. Also, 1 RE-0006 is currently functional and providing indication but the cabling used does not meet the required environmental qualifications.
A replacement cable has been ordered and is being expedited.
However. due to the type of cable and the specialty connectors required.
the cable is not scheduled to be delivered to the plant site until January 1S, 2012. Based upon this delivery date, it is anticipated that containment high range radiation monitor 1 RE-OOOS will be returned to Operable status by February 16, 2012.