ML21067A221
Text
DETAILS Division:
RP Name:
DRP Detected by ORISE HPs in SU12204A
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Description:==
On 12/05/19, at approximately 1455, ORISE HPs detected activity greater than the background in Survey Unit (SU) 12204A while performing gamma scans. The material was excavated, and a discrete radioactive particle was identified. The particle was collected in a bag with soil. The initial reading using a 2350 meter and a 4410-gamma detector showed 503K CPM; using an M3/GM detector showed 600K CPM, and using a Telepole, dose rates showed 6.5 mrem/hr at contact and <0.1 mrem/hr at 30 cm.
The DRP was taken to Chemistry for isotopic analysis. qualitative results showed Co 60 9.87E+05 pCi/unit.
Start Date:
12/6/2019 1:38:00 PM End Date:
12/12/2019 12:00:00 AM Status:
Completed PROPERTIES SIG Level:
3 Date/Time Initiated:
12/6/2019 1:38:00 PM Brief
Description:
DRP Detected by ORISE HPs in SU12204A
==
Description:==
On 12/05/19, at approximately 1455, ORISE HPs detected activity greater than the background in Survey Unit (SU) 12204A while performing gamma scans. The material was excavated, and a discrete radioactive particle was identified. The particle was collected in a bag with soil. The initial reading using a 2350 meter and a 4410-gamma detector showed 503K CPM; using an M3/GM detector showed 600K CPM, and using a Telepole, dose rates showed 6.5 mrem/hr at contact and <0.1 mrem/hr at 30 cm.
The DRP was taken to Chemistry for isotopic analysis. qualitative results showed Co 60 9.87E+05 pCi/unit.
Immediate Actions:
DRP was captured and assessed using portable instrumentation then sent to chemistry for qualitative isotopic analysis.
Recommended Actions:
Review for 10CFR50.75g.
The DRP was removed leaving no residual contamination and is considered remediated; therefore, does not meet the intent of 10CFR50.75g(1).
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Date Discovered:
12/5/2019 Issue Identified By:
NRC Related Documents:
Page 1 of 3 ES-ZION-CR-2019-0177 Page 1 of 3 Condition Report
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Trends Cause Codes:
A7-B2-C01-Legacy contamination C02 Source unknown Event Codes:
$6LWH&ORVXUH)66VXUYH\\LVVXH Reviewed Date/Time:
12/6/2019 12:00:00 AM Maintenance Rule Applicable?
False Reportability Applicable?
False Operability Review Required?
False CAQ/NONCAQ?
Non-CAQ 50.75g Issue?
False 7230D Issue?
False MRC Review Meeting Date:
MRC Approval:
False MRC Comments:
Responsibilities Initator:
David S. Villicana Shift Manager:
Jason P. Pacheco-ext CR Owner:
Timothy W. Plutchak Events Step Person Start Date End Date Initiation:
David S. Villicana 12/6/2019 12/6/2019 OP Review:
Jason P. Pacheco-ext 12/6/2019 12/6/2019 Screening:
Timothy W. Plutchak 12/6/2019 12/12/2019 MRC Review:
Timothy W. Plutchak Pending CA Completion:
Timothy W. Plutchak 12/12/2019 12/12/2019 Verify and Closure:
Timothy W. Plutchak 12/12/2019 12/12/2019 Verification Verification:
Timothy W. Plutchak 12/12/2019 Verification Comments Close to actions taken as agreed by MRC members during 12/12/19 meeting.
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Page 3 of 3 ES-ZION-CR-2019-0177 Page 3 of 3 Condition Report
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