ML20148G798
| ML20148G798 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 09/03/1969 |
| From: | Johnson W YANKEE ATOMIC ELECTRIC CO. |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20148G790 | List: |
| References | |
| NUDOCS 8011130396 | |
| Download: ML20148G798 (3) | |
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MI STUART STR EET. DOSTON, W.SS$CHUSETTS 02116 Sep ten'u r 3,1969 Director, Division of Cotepliance U.S. Aton ic Energ; Con.mit sion h'as h ing t on, D.r.
20545 RC.
L'otification of an Exposure of an Individual to Radiation in D.ct sc of USAEC Title 10 - Code of Federal Regulations Part 20 App 3(cable Limit Deet Sir:
Pursuant to the U.S. Atoaic t'nergy Con =innion regulations entitled "Standara f or Prot ection Against Radiation", 10CFR Part 20.405(a), we ac rc hy repor t to yeu an expcsule of an individual to radiatf or. in excess of that dsc specified iu 10CFR Pert 20.101(b) (1).
P u i s o < n t. to 10CPr! Part 20.405(c), you wil) find enclosed an a ceparate part of tht. report, the ncT.e of the individual who has received exposure to radin' ion la excest of the applicable linit.
The c.< t e n t of the expanurc cas 3.06011M, accumulative, during t he third ( alt adar quarter of 1969.
The radiatien doce rate in the arca, in which the individual was working i
wien the applicable exposure limit was exceeded, was six roentgens per hour.
The presence of rad.iation dose rates of the above mentioned magnitude in due to the formation of an adherent corrosion film on the inside curfaces of our riain coolar t system, which is not readily removable.
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The cause of tho subject expeaure van the lach of proper !!calth Physic; c o v e r a r,e The octure of th: work involved entries into a confined space; t
th:- duration of each to be strictly timed so as to pernit good accour:t of j
accumule t ed rat.ia t j on e::posure.
"he done accountability wi<,
to be raintaaucP b;. a check of the individua]'s dosir:eter by the llealth Physico ran, af t er em:h t ir,ed cut ry.
In thic instance the individual made three entrie-into the area cith no dosimeter check until after the third entry.
After the third entiy the individual's douimoter (0-1000mr) was chect:ed and iound tc. he off scale.
The maximum total time spent in the high radiation area l
va:, 17 minut.'.
The individual'< be t a-gtumna dose recording film m mnt ry 8011380 376
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by carrie for ir.cdiote procecuing. The radiation exponure doco repot t ed was 2.500 RT::!.
This 2.5001;Di dose coupled seith a prer tou:. dose of 0.560 RD1 roccived in this quarter, totalled 3.060 Ill:M.
b The maxiuur-time cpent in the work area where the meanored radiallon i
do:..e rate vas 100 nr/niinute uns 17 minutes. Using these fi;ures, the cal-t culcted do.,e is 47% lower thnn the reported doce, based on the indJvidual's film bc_dge.
It is also of interest to note that controlled expocure filun consintently indicate doses vhich are 30%-40?. hir,her than the actuc1 dose applied.
Uc are actively invcatigatiut; these discropancies since this probP.
imposes a severe pennity on our overall operation.
Thic inc3dcnt was precipitated by a violation of Health Physics procedureu due to gross negligence on the part of a Health Physicc Supervicor.
As a
-recult of thin, the supervisor responsible van given a tuo week suspension vithout pay.
It is felt that the effects of this suspensjon will cerve to nahe all personnel more keen 3y avare of their responsibilities and will hc]p i
prevent r. future overexposure, i
l, Very truly yours, i
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i' W.P. Jolmson Manager of Operations 5
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s 441 S1UAF,T STREET. bOSToi,' leASSACi:USETTS 02116 j
i Septer..Ler 3,] 969 i
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5 Director, Division of Corp]innce l
U.S. Atomic Energy Cc T.isaien I
Washington, D.C.
20545 i
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Subject:
Isc;tification of an Exposure of an Individual to Radiation l
in Execas of USAEC Title 10 - Code of Federal Regulations j
Part 20 Applicable Limit l
Name of Individual: James R. Young l
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Social Security I:o.
016-20-3244 j
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