ML20148G798

Ro:During Third Quarter of CY69,exposure of Jr Young to Radiation Exceeded 10CFR20.101(c) Specs.Caused by Supervisor Negligence.Supervisor Suspended W/O Pay.Exposure Dose Discrepancies Investigated

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: ML20148G786 ML20148G798
References
NUDOCS 8011130396
Download: ML20148G798 (3)

Text

,

i O O

, 9ff+

0 .

Y/d 'KEE AiOlAlC ELECTRIC col @ANY

. ~ _~ ~ ~. _ _ _ . ~-

f  !?' -.__,-.~~~

~

/g &

~~~

~ . . -

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. l i

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

. - - ..~~_ ~.-._. . .- _- .- . - . . - _ _ _ . . . . - . _ _ _ - _

1 O O by carrie for ir.cdiote procecuing. The radiation exponure doco repot t ed I 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 tfi;ures, the cal-  !

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 i

,, q

/ i' , ' <  ;

W.P. Jolmson Manager of Operations 5

F UPJ /n:a l i

1:ncl . k L

l i

h a

r I

I t

1 I

t4 a

l i.

l r

~ . . .

_ ~. - _ - _r

I

~ i l

'g .= 5

! 4 , i P

i i

YANKEE ATOIMC E!..ECTRIC CO/.iPh.NY  !

-[z. .

,1.--

s [/

~/kis':_. -

441 S1UAF,T STREET. bOSToi,' leASSACi:USETTS 02116 j i

Septer..Ler 3,] 969 i

! i r

5 Director, Division of Corp]innce l U.S. Atomic Energy Cc T.isaien I Washington, D.C. 20545 .

i l

I l

i

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

}

Social Security I:o. 016-20-3244 j i

I l

l i

h l

i i

- -. - - , - . , - - .- . . - . . .- --. ,