ML21067A207

Post-CCDD Surveillance Summary

ML21067A207
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	02/10/2021
From:	ZionSolutions
To:	Office of Nuclear Material Safety and Safeguards
Shared Package
ML21067A225	List: ML21067A176 ML21067A177 ML21067A178 ML21067A179 ML21067A180 ML21067A181 ML21067A182 ML21067A183 ML21067A184 ML21067A185 ML21067A186 ML21067A187 ML21067A188 ML21067A189 ML21067A190 ML21067A191 ML21067A192 ML21067A193 ML21067A195 ML21067A196 ML21067A197 ML21067A198 ML21067A199 ML21067A200 ML21067A201 ML21067A202 ML21067A203 ML21067A204 ML21067A205 ML21067A206 ML21067A207 ML21067A208 ML21067A209 ML21067A210 ML21067A211 ML21067A212 ML21067A214 ML21067A215 ML21067A216 ML21067A217 ML21067A218 ML21067A219 ML21067A220 ML21067A221 ML21067A222 ML21067A223 ZS-2021-0001, Penetration Dose Calculation Spreadsheet
References
ZS-2021-0001
Download: ML21067A207 (5)

Text

Survey Unit Date Scan % Alarms

1. Samples Sample Results Date Scan %

12112 5/30/2019 100 2

17 systematic, 2 investigation, 4 subsurface 0.179 max OpSOF, 0.018 mean BcSOF 7/30/2019 0

12113 1/18/2019 100 0

17 systematic, 2 subsurface 0.093 max OpSOF, 0.012 mean BcSOF 9/6/2019 10 12203A 2/19/2019 100 0

17 systematic, 14 investigation, 7 subsurface 1.278 max OpSOF, 0.04 mean BcSOF 6/18/2019 1

12203B 2/5/2019 100 0

17 systematic, 2 subsurface 0.159 max OpSOF, 0.014 mean BcSOF 8/1/2019 30 12203C 1/18/2019 100 0

17 systematic, 2 subsurface 0.074 max OpSOF, 0.012 mean BcSOF 8/1/2019 0

12203D 1/18/2019 100 0

17 systematic, 2 subsurface 0.101 max OpSOF, 0.014 mean BcSOF 8/1/2019 0

FSS

Alarms # Samples Sample Results Comments Date Scan % Alarms # Samples N/A 2

below OpDCGL; max Cs-137 5.09E-02 pCi/g Performed after CCDD removal 2/11/2020 0

N/A 0

0 2

no ROC ID Performed after CCDD removal; Focused scan of areas where CCDD was stored or transported 5/26/2020 0

N/A 0

0 8

no ROC ID Performed after CCDD removal; Focused scan of areas where CCDD was stored or transported 5/26/2020 0

N/A 0

0 3

no ROC ID Performed after CCDD removal; Focused scan of areas where CCDD was stored or transported 5/26/2020 0

N/A 0

N/A 1

below OpDCGL; max Cs-137 5.72E-02 pCi/g Performed after CCDD removal 5/26/2020 0

N/A 0

N/A 1

no ROC ID Performed after CCDD removal 1/7/2020 0

4 1st Surveillance

Sample Results Comments Date Scan % Alarms # Samples N/A Visual walkdown for anomalies affecting radiological condition; none identified 6/1/2020 10 0

0 N/A Visual walkdown for anomalies affecting radiological condition; none identified 8/24/2020 5

0 0

N/A Visual walkdown for anomalies affecting radiological condition; none identified 8/24/2020 5

0 0

N/A Visual walkdown for anomalies affecting radiological condition; none identified 8/24/2020 5

0 0

N/A Visual walkdown for anomalies affecting radiological condition; none identified 8/24/2020 5

0 0

no ROC ID

• Biased scans were performed at erosion areas (small percentage of survey unit);

no anomalies identified.

5/26/2020 0

N/A 0

2nd Surveillance

Sample Results Comments Date Scan % Alarms # Samples N/A Monitoring well removal; no anomalies 8/24/2020 5

0 0

N/A Visual walkdown for anomalies affecting radiological condition; none identified. 5%

of areas during seeding activities N/A Visual walkdown for anomalies affecting radiological condition; none identified. 5%

of areas during seeding activities N/A Visual walkdown for anomalies affecting radiological condition; none identified. 5%

of areas during seeding activities N/A Visual walkdown for anomalies affecting radiological condition; none identified. 5%

of areas during seeding activities N/A Visual walkdown for anomalies affecting radiological condition; none identified 8/24/2020 5

0 0

3rd Surveillance

Sample Results Comments N/A Visual walkdown for anomalies affecting radiological condition; none identified. 5% of areas during seeding activities N/A Visual walkdown for anomalies affecting radiological condition; none identified. 5% of areas during seeding activities 4th Surveillance