ML21067A198

2019-1953 Follow Up to Concrete in 10209C

ML21067A198
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	12/03/2019
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: ML21067A198 (2)

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I--.;, I*,r I Survey#: 2019-1953

Description:

FQllow-1,!g L1Q2Q~C Date_;_ 12/03/2019 rime: 1550 ~

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Unit: SU 10209C Surveyor Name(s): (Print) D .11.rrh,.,, I II.Arr.:,,;,., (Sign@_,! L ~I - - .-.r-,.~~

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RWP : 2019-0-0001 Rad Posting: FSS Clean lAir Sample taken: Dyes lilno Dosimetry Placement: Iii Chest Head All dose rates in mrem/hr unless otherwise noted Thigh Other Instrument Model Serial#

Follow-up survey of concrete piece found in SU 10209C with elevated activity.

2350/44-10 2"6656LPR3117i:;n Concrete piece was discovered and captured by ORISE, approximately 2" below ground surface.

Tolonnlo 6614-001 Concrete piece was sent to chemistry and determined to contain Cesium and Cobalt.

I\A_'.l 2a'l2i:;.n With a 2350 instrument and a 44-10 detector, with a 3" collimator attached, activity is 38.3K cpm, in avg bkg

..,,c:n/J1A_1n 304712/PR372143 2.9kcpm.

All Smears and/or Large Area Swipes An M-3 frisker showed 2.2 K cpm.

2

<1000 dpm/100cm (unless noted below) Masslinns Tele pole dose rate is 0.1 mr/h.

1. P-v a # P-v a Letter ~-v M-19, SN 288924: 80µrem/h.

A Sm X Sm area in SU 10209 around the location from which the concrete piece was removed was surveyed

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with a 2350/44-10 (with 3" collimator). Average background, determined from 5 one minute counts: 2.9K cpm. Highest latched value found: 3.53K cpm.

""' No unusual or elevated activity was detected in this follow-up survey.

See map on page 2.

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DRPsdetected: ~es No N/A Purpose of Survey: Comments:

RWP Oecon Recommended D Routine Shielding Recommended 11' lnvestigational Release Recommended D Release ~ None 0 Other (specify)

Other (specify)

- * * * "' Rad boundary # /#

~ " Contact/ 30cm dose rates

1. = Gamma dose rate "Smear location Peer Check (Signature):

8 = Large area swipe

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- RPS Approval (Signature):~ ,_l / \

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5271S0_074 (ORISE ~ary,ple <:>..!"'JY - pi!ftide) 5271S0075 (SS)~ - . ,* ~* .

641584.94 343570.12

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Legend SU10209C ORISE Concrete Sample/Particle D Survey Unit (SU) 10209C

• • ~ NAD6J JL State Plane East 1201 (M0(9i$)

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2018 Aerials

• Lake County GJS Dept.

Dates of Survey: 12/03/2019 0 ORISE/ZS Sample Drawing: SU10209C CR ISE Sample 120319