ENS 49658
ENS Event | |
|---|---|
06:00 Dec 18, 2013 | |
| Title | Agreement State Report - Multiple Stuck Shutters at a Paper Mill Plant |
| Event Description | The following report was received via email:
The following are the preliminary findings of the Arkansas Department of Health, Radioactive Materials Program, involving multiple stuck shutters at a paper mill plant. An onsite inspection of this licensee was conducted on December 17, 2013. During this inspection, it was discovered that since 2008, multiple shutters were found to have been stuck open and were not able to be locked out. Based on the records reviewed at the time of inspection, it appears that there were a total of 17 gauges with stuck shutters since May 2010. It appears at this time that all but nine (9) of these gauges have been repaired, dismounted and/or disposed. Currently, these nine gauges (9) are still in use with the shutters stuck in the open position. In accordance with RH-1502.f.2. (equivalent 10 CFR 30.50(b)(2)), each stuck shutter event should have been reported to the State of Arkansas within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The licensee failed to notify the State of Arkansas of all of these events. The information concerning the 17 gauges is as follows: Radionuclide Manufacturer Model # Activity Cesium-137 Berthold LB 7440 50 mCi Cesium-137 Berthold LB7440 100 mCi Cesium-137 Berthold LB 7440 30 mCi Cesium-137 Berthold LB 7440 250 mCi Cobalt-60 Berthold LB 300L 0.2 mCi Cobalt-60 Berthold LB 300L 0.5 mCi Cobalt -60 Berthold LB 300L 0.19 mCi Cobalt-60 Berthold LB 300L 0.7 mCi Cobalt-60 Berthold LB 300L 4.14 mCi Cobalt-60 Berthold LB 300L 0.46 mCi Cobalt-60 Berthold LB 300L 1.8 mCi Cobalt-60 Berthold LB 300L 1.51 mCi Cesium-137 Berthold LB 330 24 mCi Cobalt-60 Berthold LB 300L 1.8 mCi Cobalt-60 Berthold LB 300L 0.46 mCi Cobalt-60 Berthold LB 300L 1.51 mCi Cobalt-60 Berthold LB 300L 0.22 mCi The licensee is in the process of submitting additional records. Information related to the gauge serial numbers and event date will be provided in another update. The Department is continuing to investigate and will provide updates as information is received.
The Arkansas Department of Health, Radioactive Materials Program, received an incident report from Domtar A.W., LLC on January 17, 2014. All stuck shutters were discovered in May of 2010, when a new consultant was hired who properly performed the shutter checks. Since that time, there were a total of 22 stuck shutters. Some of these shutters were stuck open from seven months to two years before being replaced or repaired. The licensee has confirmed that no Domtar workers, contractors or members of the public received any radiation exposure from these gauges. The following devices had stuck shutters: Radionuclide Manufacturer Model Activity Date of Repair Cs-137 Berthold LB7440 50 mCi 12/14/10 Cs-137 Berthold LB7440 50 mCi 12/15/10 Cs-137 Berthold LB7440 50 mCi 12/14/10 Cs-137 Berthold LB7440 50 mCi 12/15/10 Cs-137 Berthold LB7440 250 mCi 08/10/11 Cs-137 Berthold LB7440 100 mCi 12/16/10 Cs-137 Berthold LB7440 30 mCi 08/09/11 Cs-137 Berthold LB7440 100 mCi 06/28/11 Cs-137 Berthold LB7440 50 mCi 06/30/11 Cs-137 Berthold LB7440 30 mCi 06/29/11 Cs-137 Berthold LB7440 100 mCi 08/11/11 Cs-137 Berthold LB7440 30 mCi Disposed on 05/24/12 Cs-137 Berthold LB7440 100 mCi 08/12/11 Co-60 Berthold LB300L 2.5 mCi total 12/17/13 for 1 shutter ** Co-60 Berthold LB300L 5.03 mCi total 12/17/13 for 2 shutters** Co-60 Berthold LB300L 2.19 mCi total 12/17/13 for 2 shutters**
Notified R4DO (Spitzberg) and FSME Events Resource (email).
This update provided device serial numbers and closed out this incident. Radionuclide Manufacturer Model Serial Number Activity Date of Repair Cs-137 Berthold LB7440 37624-12097 50 mCi 12/14/10 Cs-137 Berthold LB7440 37624-11867 50 mCi 12/15/10 Cs-137 Berthold LB7440 700799-2813 50 mCi 12/14/10 Cs-137 Berthold LB7440 37624-12090 50 mCi 12/15/10 Cs-137 Berthold LB7440 37624-12273 250 mCi 08/10/11 Cs-137 Berthold LB7440 37624-12098 100 mCi 12/16/10 Cs-137 Berthold LB7440 37624-12271 30 mCi 08/09/11 Cs-137 Berthold LB7440 37624-12281 100 mCi 06/28/11 Cs-137 Berthold LB7440 *** 50 mCi 06/30/11 Cs-137 Berthold LB7440 37624-12279 30 mCi 06/29/11 Cs-137 Berthold LB7440 37624-12278 100 mCi 08/11/11 Cs-137 Berthold LB7440 *** 30 mCi Disposed on 05/24/12 Cs-137 Berthold LB7440 37624-12272 100 mCi 08/12/11 Co-60 Berthold LB300L 7687 2.5 mCi total 12/17/13 for 1 shutter ** Co-60 Berthold LB300L 8654 5.03 mCi total 12/17/13 for 2 shutters** Co-60 Berthold LB300L 9507 2.19 mCi total 12/17/13 for 2 shutters**
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| Where | |
|---|---|
| Domtar A.W., Llc Ashtown, Arkansas (NRC Region 4) | |
| License number: | ARK-0354-0312 |
| Organization: | Arkansas Department Of Health |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+11.1 h0.463 days <br />0.0661 weeks <br />0.0152 months <br />) | |
| Opened: | Kayla Avery 17:06 Dec 18, 2013 |
| NRC Officer: | John Shoemaker |
| Last Updated: | May 9, 2014 |
| 49658 - NRC Website | |
Domtar A.W., Llc with Agreement State | |
WEEKMONTHYEARENS 496582013-12-18T06:00:00018 December 2013 06:00:00
[Table view]Agreement State Agreement State Report - Multiple Stuck Shutters at a Paper Mill Plant 2013-12-18T06:00:00 | |