RA-16-107, LER 16-S01-00 for Oyster Creek Nuclear Generating Station Regarding Special Nuclear Material Discovered Outside of Material Access Area

LER 16-S01-00 for Oyster Creek Nuclear Generating Station Regarding Special Nuclear Material Discovered Outside of Material Access Area

ML16342C557
Person / Time
Site:	Oyster Creek
Issue date:	12/05/2016
From:	Gillin M Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA-16-107 LER 16-S01-00
Download: ML16342C557 (4)

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~ Exelon Generation Oyster Creek Route 9 South P.O. Box388 Forked River, NJ 08731 10 CFR 73.71 RA-16-107 December 05, 2016 U.S. Nuclear Regulatory Commission Attn: Document Control Desk or 0-881 One White Flint North 11555 Rockville Pike Rockville, MD 20852 Oyster Creek Nuclear Generating Station Renewed Facility Operating License No. DPR-16 NRC Docket No. 50-219

Subject:

Special Report 2016-S01-001 "Special Nuclear Material Discovered Outside of Material Access Area."

Enclosed is Special Report 2016-S01-00 reporting the discovery of Special Nuclear Material outside of the Material Access Area, which occurred on October 06, 2016.

This event did not affect the health and safety of the public or plant personnel. There are no regulatory commitments made in this submittal.

Should you have any questions concerning this report, please contact Mike McKenna, Regulatory Assurance Manager, at (609) 971-4389.

Respectfully, Michael Gillin Plant Manager Oyster Creek Nuclear Generating Station

Enclosure:

NRC Form 366, Special Report 2016-S01-00 cc: Administrator, NRC Region I NRC Senior Resident Inspector - Oyster Creek Nuclear Generating Station NRC Project Manager - Oyster Creek Nuclear Generating Station ,,.....,- [ 7 tj--

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NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2018 (06-2016)

Estimated burden per response to comply with this mandatory collection request 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />.

Reported lessons learned are incorporated into the licensing process and fed back to industry.

Send comments regarding burden estimate to the FOIA, Privacy and Information Collections LICENSEE EVENT REPORT (LER) Branch (T-5 F53), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by e-mail (See Page 2 for required number of digits/characters for each block) to lnfocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, NEOB-10202, (3150-0104), Office of Management and Budget, Washington, DC 20503. If a (See NUREG-1022, R.3 for instruction and guidance for completing this form means used to impose an information collection does not display a currently valid OMB control http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1022/r3/J number, the NRG may not conduct or sponsor, and a person is not required to respond to, the information collection.

1. FACILITY NAME 2. DOCKET NUMBER 3. PAGE Oyster Creek 05000219 1 OF 3

4. TITLE Special Nuclear Material Discovered Outside of Material Access Area

5. EVENT DATE 6. LER NUMBER 7. REPORT DATE 8. OTHER FACILITIES INVOLVED MONTH DAY YEAR YEAR I SEQUENTIAL NUMBER I REV NO.

MONTH DAY YEAR FACILITY NAME N/A DOCKET NUMBER 05000 FACILITY NAME DOCKET NUMBER 06 2016 2016 - 801 - 00 12 05 2016 N/A 05000

9. OPERATING MODE 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply)

D 20.2201(b) D 20.2203(a)(3)(i) D 50.73(a)(2)(ii)(A) D 50.73(a)(2)(viii)(A)

D 20.2201(d) D 20.2203(a)(3)(ii) D 50.73(a)(2)(ii)(B) D 50.73(a)(2)(viii)(B)

N D 20.2203(a)<1> D 20.2203(a)(4) D so.13(a)(2)(iii) D 50.73(a)(2)(ix)(A)

D 20.2203(a)(2)(i) D 50.36(c)(1)(i)(A) D 50.73(a)(2)(iv)(A) D 50.73(a)(2)(x)

10. POWER LEVEL D 20.2203(a)(2)(ii) D 50.36(c)(1 )(ii)(A) D 50.73(a)(2)(v)(A) IZI 13_11 (a)(4)

D 20.2203(a)(2)(iii) D so.36(c)(2l D 50.73(a)(2)(v)(B) D 13.11(a)(s)

D 20.2203(a)(2)(1v) D so.4e(a)(3)(ill D 50.73(a)(2)(v)(C) D 1s.11(a)(1) 000 D 20.2203(a)(2)(v) D 50.73(a)(2)(i)(A) D 50.73(a)(2)(v)(D) D 13_11(a)(2)(i)

D 20.2203(a)(2)(vi) D 50.73(a)(2)(i)(B) D 50.73(a)(2)(vii) D 73.77(a)(2)(ii)

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:, :**;.; '\/"'.'~*:'.;;* , .. '*'.

• . D 50. 73(a)(2)(i)(C) !ZI OTHER Specify in Abstract below or in NRG Form 366A

12. LICENSEE CONTACT FOR THIS LER LICENSEE CONTACT !TELEPHONE NUMBER (Include Area Code)

Michael McKenna, Regulatory Assurance Manager (609) 971-4389

13. COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT MANU- REPORTABLE MANU- REPORTABLE CAUSE SYSTEM COMPONENT CAUSE SYSTEM COMPONENT FACTURER TO EPIX FACTURER TOEPIX x IG DET GOBO N N/A N/A N/A N/A N/A

14. SUPPLEMENTAL REPORT EXPECTED 15.EXPECTED MONTH DAY YEAR SUBMISSION

!ZI YES (If yes, complete 15. EXPECTED SUBMISSION DATE) ONO DATE 06 01 2017 ABSTRACT (Umit to 1400 spaces, i.e., approximately 15 single-spaced typewritten lines)

On October 6, 2016, a box of in-core power monitoring detectors (i.e., local power range monitors) was found in the Oyster Creek Generating Nuclear Station (OCNGS) Warehouse Annex located in the Owner Control Area (OCA). The box was identified during storeroom movement of equipment to find other stock items. It was determined that the regenerative detectors had not being properly stored pursuant to applicable 10 CFR 73 physical security requirements from the time of discovery back to .1987. Upon discovery, the detectors were immediately guarded by Station Security Personnel and actions were performed to transfer the detectors to a Material Access Area.

The event posed no threat to the public health and safety as the detectors were not irradiated (never placed in the reactor core).

This Special Report is been submitted in accordance with the requirements of 10 CFR 73.71 (a)(4) and 10 CFR 73 Appendix G, Section 1.

NRG FORM 366 {06-2016)

NRC FORM 366A U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2018 (06-2016))

Estimated burden per response to comply with this mandatory collection request: 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />. Reported lessons learned are incorporated into the licensing process and fed back to industry. Send comments regarding burden estimate to the FOIA, Privacy and Information Collections Branch (T-5 LICENSEE EVENT REPORT (LER) F53), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by e-mail to lnfocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, CONTINUATION SHEET NEOB-10202, (3150-0104), Office of Management and Budget, Washington, DC 20503. If a means used to impose an information collection does not display a currently valid OMB control number, the (See NUREG-1022, R.3 for instruction and guidance for completing this form NRG may not conduct or sponsor, and a person is not required to respond to, the information http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1022/r3/) collection.

1. FACILITY NAME 2. DOCKET NUMBER 3. LER NUMBER SEQUENTIAL REV YEAR NUMBER NO.

Oyster Creek 05000219 2016 - S01 - 00 NARRATIVE Plant Conditions Prior To Event Event Date: October 6, 2016 Event Time: 1548 EDT Unit 1 Mode: Cold Shutdown

• Power Level: 0%

Description of Event On October 6, 2016, a box of in-core power monitoring detectors (i.e., local power range monitors) was found in the OCNGS Warehouse Annex located in the Owner Control Area (OCA). The box was identified during storeroom movement of equipment to find other stock items. The box was located under a pallet with other material piled on top. One side of the box had hand written markings stating that the box contained eight (8) regenerative neutron detectors and a box of tubing. There were no special markings or information contained on the box indicating that the box contained Radioactive Material.

Upon discovery the stockkeeper in the warehouse immediately identified the box as possible Special Nuclear Material (SNM) and contacted the Reactor Engineering Department. The Reactor Engineering Manager, with support from General Electric (GE) and other Exelon sites, identified these detectors as BWR-6 in-core type detectors. The SNM was immediately guarded by Security and a 1-hour notification in accordance with 10 CFR 73.71 (a) and 10 CFR 73, Appendix G, Section 1 was completed to the Nuclear Regulatory Commission (NRC).

The detectors were transferred to the Protected Area Warehouse, where the OCNGS Material Access Area is located. The detectors were guarded by Security through the transfer process at all times. Additionally, a Radiation Protection survey of the box and detectors was completed and no dose rate was reported on the material discovered.

Analysis of Event The box of in-core power monitoring detectors was found outside of a Material Access Area. This box contained a package with the coils sealed inside. The packaging was confirmed intact and was heat sealed closed. It was apparent that no disruption of the contents of the box had occurred and that the box had not been open recently.

Inside the packaging, there were multiple tubing coils with one end containing an approximate 1/8 inch diameter by 4-inch long stainless tube with no markings on the tube. The other end of the coil contained a detector union with a visible center pin connection. A total of eight (8) coils with detectors were identified inside the sealed package. The contents of the box were examined in more detail. The serial numbers and pictures of the detectors were sent to GE, who validated that the detectors were in-core local power range monitors typical of a BWR-6 unit and not a type of detector utilized at OCNGS.

• The box of in-core power monitoring detectors, although not confirmed, most likely was part of a test program that took place at OCNGS between the years of 1975 to 1990. This program was discontinued in 1990. Neither GE nor Reuter Stokes has been able to provide records for the detectors. A review of OCNGS records from 1982 to date did not identify these in-core detectors in the site inventory. OCNGS is still investigating this event.

NRG FORM 366A (06-2016)

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NRC FORM 366A U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2018 (06-2016))

Estimated burden per response to comply with this mandatory collection request 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />. Reported lessons learned are incorporated into the licensing process and fed back to industry. Send comments regarding burden estimate to the FOIA, Privacy and Information Collections Branch (T-5 LICENSEE EVENT REPORT (LER) F53), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by e-mail to l_nfocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, CONTINUATION SHEET NEOB-10202, (3150-0104), Office of Management and Budget, Washington, DC 20503. If a means used to impose an infonmation collection does not display a currentty valid OMB control number, the (See NUREG-1022, R.3 for instruction and guidance for completing this form NRC may not conduct or sponsor, and a person is not required to respond to, the infonmation http://www. n re. gov/reading-rm/doc-collections/nuregs/staff/sr1022/r31) collection.

1. FACILITY NAME 2. DOCKET NUMBER 3. LEA NUMBER SEQUENTIAL REV YEAR NUMBER NO.

Oyster Creek 05000219 2016 - 801 00 NARRATIVE Immediate Actions Completed

- Transferred the box of in-core power monitoring detectors to a Material Access Area.

- Completed Extent of Condition Inspections in all material storage facilities at OCNGS.

Cause of the Event The original failure to control the SNM occurred between 1977 and1'989. This is a legacy issue that is still under investigation and a supplement report will be submitted after the Apparent Cause Evaluation is complete~.

Previous Event A nuclear instrumentation detector was discovered in a training classroom outside of the site protected area boundary. Investigation into the history for the detector found that its serial number matched an intermediate range monitor detector that was previously included in the site SNM inventory from1989. This issue was evaluated by the NRG as documented in a 2007 Material Control and Accountability Inspection Report (2007~403) for OCNGS, in which a Green Non-cited Violation was issued for the incident.

NRG FORM 366A (06-2016)

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