|
---|
Category:Letter
MONTHYEARML24022A1492024-01-17017 January 2024 Independent Spent Fuel Storage Installation, Revision 4 to the Physical Security Plan IR 05000361/20230062023-11-29029 November 2023 NRC Inspection Report 05000361/2023-006 and 05000362/2023-006 ML23333A0682023-11-22022 November 2023 (SONGS) Units 1, 2, 3 and Independent Spent Fuel Storage Installation - Notification of Change in Nuclear Officer IR 05000361/20230052023-10-11011 October 2023 NRC Inspection Report 05000361/2023005 and 05000362/2023005 ML23276A5942023-09-28028 September 2023 and Independent Spent Fuel Storage Installation - Supplement to Decommissioning Funding Status Reports ML23268A0922023-09-20020 September 2023 Generation Station, Units 1, 2 and 3, and the Independent Spent Fuel Storage Facility (ISFSI) - Re-Registration of Dry Fuel Storage Casks for Amended Certificate of Compliance No. 1040 IR 05000361/20230012023-09-13013 September 2023 NRC Inspection Report 05000361 2023-001 and 05000362 2023-004 ML23240A5372023-08-18018 August 2023 Confirmatory Survey Activities Summary and Results for the Unit 2 and 3 Intake Structures at the San Onofre Nuclear Generating Station San Clemente CA ML23129A1802023-06-14014 June 2023 Cover Letter to State of CA on Draft EA Regarding San Onofre ISFSI Updated DFPs IR 05000361/20230032023-05-31031 May 2023 NRC Inspection Report 05000361/2023003 and 05000362/2023003 IR 05000361/20230022023-05-23023 May 2023 NRC Inspection Report 05000361/2023-002 and 05000362/2023-002 ML23137A1032023-05-11011 May 2023 (Songs), Units 1, 2 and 3, and Independent Spent Fuel Storage Installation - 2022 Annual Radiological Environmental Operating Report ML23123A0932023-04-28028 April 2023 (Songs), Units 1, 2 and 3, Submittal of Annual Radioactive Effluent Release Report - 2022 ML23230A0882023-04-10010 April 2023 Independent Spent Fuel Storage Installation - Decommissioning Quality Assurance Plan ML23094A1272023-03-29029 March 2023 Independent Spent Fuel Storage Installation - 10 CFR 50.82(a)(8)(v and VII) and 10 CFR 72.30(c) Decommissioning Funding Status Report 2021 ML23094A1332023-03-29029 March 2023 Nuclear Property Insurance ML23062A1172023-02-28028 February 2023 Generation Station Units 1, 2 and 3, Annual Radioactive Effluent Release Report for Independent Spent Fuel Storage Installation - 2022 ML22361A1022023-02-24024 February 2023 Reactor Decommissioning Branch Project Management Changes for Some Decommissioning Facilities and Establishment of Backup Project Manager for All Decommissioning Facilities ML23059A2812023-02-22022 February 2023 (Songs), Units 1, 2 and 3, 2022 Annual Turtle Incidental Take Report ML23046A3792023-02-22022 February 2023 NRC Inspection Report 050-00361/2023-001 and 050-00362/2023-001 ML23045A2022023-02-0909 February 2023 Submittal of Annual Corporate Financial Reports for San Onofre Nuclear Generating Station (SONGS) Units 2 and 3 for Fy Ending June 30, 2022 ML22287A1352023-01-0505 January 2023 Issuance of Exemption from Title 10 of the Code of Federal Regulations Part 72.106(B), Independent Spent Fuel Storage Installation Controlled Area Boundary (L-2021-LLE-0056) ML22348A0622023-01-0404 January 2023 NRC to SCE, Transmittal of the National Marine Fisheries Service'S December 12, 2022, Letter of Concurrence for Decommissioning of San Onofre Nuclear Generating Statiion, Units 2 and 3 IR 05000206/20220062022-12-15015 December 2022 NRC Inspection Report 05000206/2022006, 05000361/2022-006, and 05000362/2022-006 ML22347A2122022-12-12012 December 2022 NMFS to NRC, Endangered Species Act Section 7(a)(2) Concurrence Letter for Decommissioning of the San Onofre Nuclear Generating Station ML22340A6652022-12-0505 December 2022 Letter from John Fassell, Chief; Re., State of California Department of Public Health Review and Comments on SONGS Draft Environmental Assessment ML22333A8192022-11-21021 November 2022 Submittal of San Onofre Nuclear Generating Station, Units 2 and 3, Defueled Safety Analysis Report, Revised November 2022 IR 05000361/20220052022-11-17017 November 2022 NRC Inspection Report 05000361/2022-005 and 05000362/2022-005 ML22301A1462022-10-20020 October 2022 Report of Violations of the National Pollutant Discharge Elimination System Permit San Onofre Nuclear Generating Station (Songs), Units 2 and 3 ML22277A0162022-09-29029 September 2022 Independent Spent Fuel Storage Installation Response to Request for Additional Information Regarding Request for Exemption from 10 CFR 72.106(b) IR 05000361/20220042022-09-26026 September 2022 NRC Inspection Report 05000361/2022-004 and 05000362/2022-004 ML22238A0552022-08-29029 August 2022 U.S. Nuclear Regulatory Commission'S Analysis of Southern California Edison'S Decommissioning Funding Status Report for San Onofre Nuclear Generating Station, Units 1, 2, and 3 ML22234A1602022-07-31031 July 2022 Final Report Per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. 18CLVS431 ML22207B8612022-07-26026 July 2022 NRC (Public) Inspection Report 05000361/2022003; 05000362/2022003 IR 05000361/20220032022-07-26026 July 2022 NRC Inspection Report (Public) 05000361-2022003 and 05000362-2022003 (002) IR 05000361/20220022022-05-12012 May 2022 NRC Inspection Report 05000361/2022-002 and 05000362/2022-002 ML22136A0842022-05-12012 May 2022 Independent Spent Fuel Storage Installation, 2021 Annual Radiological Environmental Operating Report ML22122A0402022-04-28028 April 2022 (Songs), Units 1, 2 and 3 - Annual Radioactive Effluent Release Report - 2021 ML22105A5662022-04-0505 April 2022 20053 Letter - OI Closure to Licensee - Wrongdoing Signed ML22081A1692022-03-31031 March 2022 SONGS Application Acceptance Proposed Exemption from Title 10 of the CFR, Part 72.106(b), ISFSI Controlled Boundary IR 05000206/20214022022-03-24024 March 2022 Notice of Violation, NRC Inspection Report 05000206/2021402, 05000361/2021402, 05000362/2021402, and 07200041/2021401; and Investigation Report 4-2021-004- Public- Cover Letter ML22084A0552022-03-23023 March 2022 10 CFR 50.82(a)(8Xv and VII) and 10 CFR 72.30(c) Decommissioning Funding Status Report 2021 San Onofre Nuclear Generating Station Units 1, 2, and 3 and Independent Spent Fuel Storage Installation IR 05000361/20220012022-03-14014 March 2022 NRC Inspection Report 05000361/2022-001; 05000362/2022-001 ML22066B0242022-03-0303 March 2022 (Songs), Units 1, 2, and 3, and the Independent Spent Fuel Storage Installation - Revision 2 to the ISFSI-Only Emergency Plan and Associated Changes to Emergency Plan Implementing Procedures ML22062B0282022-02-28028 February 2022 and Independent Spent Fuel Storage Installation (Isfsi), Response to Request for Supplemental Information Regarding Request for Exemption from 10 CFR 72.106(b) ML22059B0392022-02-25025 February 2022 International, Proprietary Information to Support SCE Exemption ML22060A1132022-02-24024 February 2022 Nuclear Property Insurance ML22060A1152022-02-24024 February 2022 Generation Station Units 1, 2 and 3, Annual Radioactive Effluent Release Report for Independent Spent Fuel Storage Installation - 2021 ML22048B4972022-02-15015 February 2022 (Songs), Units 1, 2 and 3 - 2021 Annual Turtle Incidental Take Report ML22031A1112022-01-26026 January 2022 (Songs), Units 2 and 3 - Annual Corporate Financial Reports 2024-01-17
[Table view] Category:Part 21 Correspondence
MONTHYEARML15223B2662015-08-0707 August 2015 Part 21 Report - Crane Nuclear Pressure Seal Valve with Retaining Rings ML15022A6502015-01-20020 January 2015 Letter from Steven R. Eisenberg USNRC 10CFR Part 21 Notification ML13246A0872013-08-23023 August 2013 Nuclear Nonconformance Event Number 49302 - 10CFR21 Notification ML1000700732009-11-19019 November 2009 USNRC 10CFR Part 21 Notification - Flowserve Figure 848 Disk/Disk Nut Separation ML0402003002004-01-14014 January 2004 10 CFR Part 21 Report Notification Regarding Radiation Monitoring System, Particulate Type, Possible Underestimation of Volumetric Activity Following an Automatic Filter Advance 2015-08-07
[Table view] |
Text
5000 Highlands Parkway Suite 150 Smyrna, GA 30082 Tel (770)432-2744, Fax (770)432.9717 Via: Fax and Courier 14 January 2004 US NRC Headquarters Operations Center Document Control Desk Nuclear Regulatory Commission Washington, DC 20555
Subject:
10 CFR part 21 Notification - MGP Instruments Inc.
Radiation Monitoring System, Particulate Type Possible underestimation of volumetric activity following an automatic filter advance
Reference:
NRC Event Number: 40445 Part name: Local Processing Unit, PIPS Particulate (LPU PIPS-P)
Part number: RMS-9041-SR with Application Software 564J
Dear Madam or Sir,
On 19 December 2003 MGP Instruments Inc. (MGPI Inc.) became aware of a potential anomaly in particulate radiation monitor, involving a specific family of local processing units (LPUs) manufactured b MGPI. Several LPUs were delivered for use in a safety related application as part of a fixed radiation monitoring system. MGPI Inc. hereby notifies the Commission, and the affected utility, in accordance with, the requirements of 10 CFR Part 21.
Based upon operational experience in a European nuclear facility, our sister organization (MGP Instruments SA) has determined that when an automatic filter advance occurred and, following a significant step change in specific activity, the measurement results could be underestimated. This underestimation exceeds the instruments specified accuracy level. Subsequent investigation into the cause of this anomaly indicated that the LPU's Application Software is not correctly updated with the filter advance signal.
The radiation monitor's particulate filter is stationary and it advances upon command from the LPU. The automatic filter advance scenarios are:
- High/low differential pressure
- Elapsed time In addition to the above, the filter can also be advanced upon manual command to the LPU.
The observed anomaly only occurs under certain conditions of automatic filter advance following a significant step change in activity. No credible anomaly is observed under manual filter advance command.
ci39
5000 Highlands Parkway Suite 150 Smyrna, GA 30082 Tel (770)432-2744, Fax (770)432-9717 This anomaly is unlikely to affect the measurement results under normal operating conditions, or when a filter advance occurs prior to a step change in activity. However, a possible operational scenario exists that could occur, under accident or mild accident conditions, where a filter advance follows a step change in activity and therefore measurement results could be under-reported.
No such anomaly had been observed by MGPI Inc. or reported to MGPI Inc. from users within the US, prior to the information received through MGPI SA.
On 14 January 2004 MGPI Inc. completed a technical review and concluded that the anomaly constituted a failure to comply with the specification. Initial notification of this matter was provided by telephone to the NRC Operations Center, and the affected utility, in accordance with 10 CFR Part 21.
The safety related application of this device is limited to its installation at Southern California Edison's San Onofre Nuclear Generating Station. In particular, these devices are used exclusively in the Particulate Radiation Monitoring channel designated by the utility as skids 7804 and 7807. Eight (8) LPU PIPS-P were delivered for this application including those provided as replacement and spare parts (serial number listing indicated in attachment B).
Additional information about this issue may be obtained by contacting the undersigned or Mr. David Jarrow MGP Instruments Inc. Quality Assurance Manager at (770) 432-2744, extension 119 or Dr. Mike Edelman, Vice President at (770) 432-2744, extension 132.
Sincerely Yours:
Michael S. Wilson Vice President and Chief Operating Officer MGP Instruments Inc.
MSW/ME/dj Attachments:
Attachment A: 10 CFR Part 21 Notification Summary Attachment B: Equipment Serial Number and Location Listing cc:
By Fax:
Southern California Edison - Caroline McAndrews, Nuclear Oversight Division
- Robert McWey, Nuclear Oversight Division Southern California Edison - Art Shean, Supervisor Nuclear Oversight By E Mail:
MGP Instruments SA, Lamanon France: 0. Dieudonne, V. Ponclet, J.L Gouronc, A. Pommier, MGP Instruments Inc. Atlanta: D.Jarrow, M. Edelman, S.Lopez
5000 Highlands Parkway Suite 150 Smyrna, GA 30082 Tel (770)432-2744, Fax (770)432-9717 Attachment A:
10 CFR Part 21 Notification Summary:
MGP Instruments Inc. (MGPI Inc.) is providing the following information in accordance with 10 CFR 21.21 (c) (4).
I. Michael S. Wilson, Vice President and Chief Operating Officer, 5000 Highlands Parkway, Suite 150 Smyrna, Georgia 30082 is the responsible officer notifying the Nuclear Regulatory Commission under the provisions of 10 CFR Part 21.
II. The basic component involved in this condition are the Local Processing Units, PIPS- Particulate Type (LPU/PIPS-P) bearing the MGP Instruments Inc. part numbers RMS-904 1-SR, containing application software 564J. These components were specifically configured for installation in Southern California Edison, San Onofre Nuclear Generation Station's - Particulate Monitoring skids 7804 and 7807 and associated spare / replacement parts.
III- The local Processing Units indicated in (II) above were manufactured by MGP Instruments Inc.,
Smyrna, Georgia.
IV. The possible underestimation of volumetric activity following an automatic filter advance is not in compliance with the requirements for accuracy and response time as detailed in the Southern California Edison Procurement Specification No. SO I23-060-12 (rev. 2 dated January 16 1995) sections 1.6.2.3.4 and 1.22.5.3 V. The discovery of a potentially reportable condition was identified under the provisions of 10 CFR part 21 on 19 December 2003. A technical review, completed on 14 January 2004, confirmed that there was a potential for safety impact.
VI. Southern California Edison, San Onofre Nuclear Generation Station, has eight (8) safety related local processing units LPU PIPS- P Type. The identification for these units is listed in Attachment B of this notification.
VII. MGPI Inc. will take the following corrective action:
The LPU PIPS Application Software (Version 564J) will be revised to properly process automatic filter advance signal. The revised software will be provided to the utility as soon as possible (estimated 60 days).
VIII. MGPI Inc. recommends that Southern California Edison take the following actions prior to the installation of the revised Application Software:
It is recommended that the particulate filter on skids 7804 and 7807 be manually advanced at a frequency determined by recent operational experience on-site (typically once every two to three days) and following any alarm condition.
5000 Highlands Parkway Suite 150 Smyrna, GA 30082 Tel (770)432-2744, Fax (770)432-9717 Attachment B:
Applicable Equipment Identification SCE PO # Equipment MGPI P/N Qty SIN Location
______ _____T ype _ _ _ _ _
6V2D3002 (RAMSYS LPU/PIPS-P RMS-9041-SR 4 960203 Skid: 3RE7804 Monitors) 960204 Skid: 3RE7807 960205 Skid: 2RE7804 960207 Skid: 2RE7807 6E256015 Delivered to: SCE (Spare Part) LPU/PIPS-P RMS-9041-SR 2 960202 Warehouse Delivered to: SCE 960206 Warehouse 6G279914 Delivered to: SCE Release A014 LPU/PIPS-P RMS-9041-SR 1 020401 Warehouse (Spare Part) _
6G279914 Delivered to: SCE Release A024 LPU/PIPS-P RMS-9041-SR 1 030506 Warehouse (Spare Part)