ENS Event | |
|---|---|
14:30 Nov 26, 2012 | |
| Title | Process Instrument Shutter Failure |
| Event Description | During a routine semiannual periodic inspection, a process gauge with a 15 milliCurie Cs-137 source was identified to have a stuck shutter. The gauge was an Ohmart Model SHF1-A45, S/N 0923GK. The instrument is permanently installed on a distillation column about 30 - 35 ft. from the ground. The integrity of the gauge is fine. Surveys indicated that radiation levels surrounding the gauge were less than 1 millirem per hour.
The same issue involving this specific gauge was reported previously in EN#46913. The licensee plans on having the gauge repaired by the manufacturer. |
| Where | |
|---|---|
| Dow Corning, Midland Plant Midland, Michigan (NRC Region 3) | |
| License number: | 21-08362-12 |
| Organization: | Dow Corning |
| Reporting | |
| 10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure | |
| Time - Person (Reporting Time:+-1.67 h-0.0696 days <br />-0.00994 weeks <br />-0.00229 months <br />) | |
| Opened: | David Dillon 12:50 Nov 26, 2012 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Nov 26, 2012 |
| 48535 - NRC Website | |
Dow Corning, Midland Plant with 10 CFR 30.50(b)(2) | |
WEEKMONTHYEARENS 485352012-11-26T14:30:00026 November 2012 14:30:00
[Table view]10 CFR 30.50(b)(2) Process Instrument Shutter Failure ENS 483352012-09-22T02:30:00022 September 2012 02:30:00 10 CFR 30.50(b)(2) Density Gauge Shutter Failure ENS 479582012-05-24T18:00:00024 May 2012 18:00:00 10 CFR 30.50(b)(2) Density Gauge Shutter Failure ENS 469132011-05-31T21:00:00031 May 2011 21:00:00 10 CFR 30.50(b)(2) Process Instrument Shutter Failure 2012-09-22T02:30:00 | |