_-.

*.

*-

, , .

l-. .

-

.

!

OA HEALTH PHYSICS ASSOCI ATES LTD. CONSULTANTS IN RADIATION SAFETY

3304 COMMERCI AL AVENUE I NORTHOROOK. IL 600621 PHONE 312 564-3330

|

, ,

,

OVEREXPOSURE INCIDENT REPORT

Calumet Testing Services Inc.1945 North Griffith Boulevard .

Griffith, Indiana 46319

:

i

I

a

l

8508010506 850717REG 3 LIC3013-16347-01 PDR

_ __ --____--____ _ _ _ _ _ . _ _ _ .__ . -_- _ .

~ ;,*.

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

--

- - . _ - - c

& HEALTH PHYSICS ASSOCI ATES LTD. CONSULTANTS IN RADIATION SAFETY

|W 3304 COMMERCIAL AVENUE I NORTHDROOK. IL 60062 i PHONE 312 N 3330!! b

| *

:

OVEREXPOSURE INCIDENT REPORT June 24,1985

Client:

Calumet Testing Services Inc..

1945 North Griffith Boulevard{Griffith, Indiana 46319 -

Attn: Robert Vidimos, President.

Individual Involved:

Birth Date -Social Security No. -

Date and Location of Incident:

Date - June 14,1985 at 10 PM

Location - Northern Indiana Public Service Co.Burns Harbor, Indiana

Radiation Source Information:

Radioactive Material - Iridium 192Source Strength - 61 Curies on June 14,1985Source Dirr.ensions - 0.1 inch x 0.1 inch focal spot size

0.25 inch x 0.5 inch stainless steel capsuleCable Material - 1/8 inch of copperManufacturer - Gamma Industries

2255 Ted Dunham AvenueBaton Route, Louisiana 70802

Camera Nc. - 2367

NAMES AND OTHER IDENTIFYING INFORMATION HAVE BEEN REMOVED TO PROTECTINDIVIDUAL PRIVACY. (10CFR9, APPEND.0211, ANNEX A, EXEMPTION N0. 6).

*

. .

3..

OVEREXPOSURE INCIDENT REPORT Page 2

Notifications:1 1. Employer notified en June 14,1985,10:30 P.M.

2. Health Physics Associates, Ltd. called June 15,1985, 8:00 A.M.] 3. Nuclear Regulatory Commission Notified en June 15,1985,10:40 A.M._j' 4. State of Indiana called June 17,1985 by Health Physics Associates. Ltd.

Description of Incident: '

noticed that when he performed the cable disconnect of a 61 Curie Ir-192, 1 source, the source did not winch completely into the housing and was exposed atthe housing entry. immediately withdrew his hands and body from the

source and cranked the source in the shield. During the cable disconnect procedure,inner left wrist surface was closest to the source and may have actuallybrushed the source.

'

Dosimetry of Incident:

film badge was worn at chest level and indicated an exposure to highenergy photons resulting in a dose-equivalent of 1.66 Rem. The film badge Eas,1 evaluated on June 15, 1985, by R. S. Landauer Jr. & Co. of Glenwood, Illinois. Ableed sample taken from

on June 15,1985 at 10 A.M. indicated normalbloed count values. No skin reddening or hair loss of

j face or body has occurred since the date of the incident. hands, wrist,Blood samples from.5 were taken on June 18, 1985

1g Ne:1 Wald at the University of Pittsburgh.for chromosomal aberration analysis by Dr,Results will be forthcoming. Previousexposure history for the two weeks preceeding this incident during which timegthe same film badge was worn, was 0.llR, based on pocket ion chamber readings.Thus, the dosimetr/ of this incident to the film badge location is 1.66R less 0.11Rcr 1.55 Rem.

1_

Evaluation of the Incident:Acccrding to , his left hand was near the source for an exposure time-

of 1 to 3 seconds. His right hand was on top of the source housing for the samelength of time that his lef t hand was near the source. His right hand was_I approximately 6 inches from the source. His head, chest and waist wereapproximately I foot, 2 feet and 3 feet, respectively, from the source during the

.

cable disconnect procedure.--

location was 40 seconds. The total time to reach and return from the source

Photographs of-

during the incident as recalled byhands three days after the incident and his position.

A set of photographs is attached to this report.were taken for documentation purpcses.

][} NAMES AND OTHER IDE.NTIFYING INFORMATION HAVE BEEN REMOVED TO PROTECT

I INDIVIDUAL PRIVACY. (10CFR9, APPEND.0211, ANNEX A, EXEMPTION NO. 6).=

'_

p

-.

:...

.1OVEREXPOSURE INCIDENT REPORT Page 3

'., ,. .r.

'

Dose Calculations- '

- Specifth Gamp.a Ray.C'onsdnt}fc[r IF-19(fsf.8R cm2'hr-lmC l * M- ,

- - - > ,: ,... .

1. The left hand dose range may be as low as 244 Rem based en a 3 second~I exposure or may be as high as 5768 Rem based on the film badge dose of

1.55 Rem and the inverse square law. The left hand dose range is large beca'useof the largely variable affects of time, distance and shielding.

. 2. Based on the observed biologic effects of the lef t hand to this exposure incidentand the incident reconstruction, the total dose-equivalent to the left handis believed to be less than 300 Rem. Radiation injury to the skin is summarizedin Table I.

.

TABLE I - RADIATION INJURY TO THE SKINDose Effect

(Rads to Skin) , . < . -

1 ~

b200 - 300 .Ep ation . i .-'

~

> 300 R'ad'iation dermatitis and erythema1000 - 2000'

' '"Transermal injury ' _'

> 2000 (single exposure) Radionecrosis> 5000 (over extended period) Chrcnic dermatitis

,- (After NCRP Report ho. 29)

'lCause of Incident:

~] Failure to accurately perform a radiation survey of the source housing after.4 completion of the radiation exposure and not establishing that the source was in

a shielded positien, caused this incident.

" .

Preventive Action Taken:

-g Instruct all personnel to thoroughly survey the source container to establish that,j the source is in a shielded mode before cable disconnection is attempted.

i~l

]

:.1; Radiological Pealth Handbook (p.131) 1970.*

1,

oI

.. ...

.

- OVEREXPOSURE INCIDENT REPORT Page 4

_

Remedial Action To Be Taken:

1. Weekly observation of hands

1 2. B1 cod counts taken at monthly intervals (Three times),

] 3. The left hand should be followed-up by a qualified dermotologist for possible.m radiation dermatitis.

4. Undergo complete physical by personal physician.-

-

5. In the event of any deliterious signs to the left hand or significant changesin blood count noticed by or his physician, it is suggested thathe visit Dr. Frank Hendrickson at Rush-Presbyterian-St. Lukes Medical Centerin Chicago, Illinois, Phone No. (312) 942-7000.

1~

~lHEALTH PHYSICS ASSOCIATES, LTD.,

_.

m

a Repcrt Submitted by Repor . -

d iy,

i O CY M-

>, , .

Gerald V.:cks, Raciatica Phys:cist 4AEWMivkin, Vice Presicent ",,

GW:sk'

enclosure

.

,

NAMES AND OTHER IDENTIFYING INFORMATION HAVE BEEN REMOVED TO PROTECT

] INDIVIDUAL PRIVACY. (10CFR9, APPEND.0211, ANNEX A, EXEMPTION NO. 6).

o

;L.

. . . _ _

...

.

. .

- .. __

__ ..

_ _ _ _ . . . ,

& y.

_! ).

-

0M HEALTH PHYSICS ASSOCI ATES LTD. CONSULTANTS IN RADIATION SAFETY

3304 COMMERCIAL AVENUE / NORTHDROOK IL 60062 i PHONE 312364-3330

!

s 1-

1LIFj6diSEW'Al?.) -

. ;_+:ce_ m y ji - w .. .

..

. .-

.: # ;. . .. .,;y . - L?f*V. .. .: .. .

,-

.::' 44. .r. .' .. .- - - -

1 --. .. .

3, ' f... w-,

- - i.

-

g:vs,4?.M..%' . . . .f . . . !.<

. .T* W &.a ' % '* & y 1a.. ;;* ':?;;'

i.

.y .u.@

. .

. ; ;- A.~E''"h.. \;zEM-

ue*

~'. _. .,

C- ..riw.; ;

:.T& ,,'*]'

f y.:- .

.

|' ' '

.

'..[,a'-@w g7 ,.

.

,..-w . A:JE.* ': . !2 '

$::~k'"- . ::: .m..;: - . - .... n .... . .' -.-

..:.<-.**.rr -

b,.- ~.'..- e -

1. , ; #: -Wf'a * '*;me % - . .

~ %. . . = . -~R""J .. ...J.- W .\ ip*.'$' ri . W. = * * .* *

r -Mki:22,w ,d**" A*'' *b *L' * *

. -- ~- f.

""-~

-

-. . . -

-

-

. g y evmys.p~ "K%;. . , . .

' - -

.n..%-~G,a--..

dem P p R .-s._ &.~~ .r.u : .::::.u .: .:~m t.5','.~m .

*-

J & = x 7.n ::. W :_"5r s " m,S, W W '; " M ,r-

nd :.~.; - --- - - ;4

*'' % _u.2. '$ h:9e yy. ,.qW; . L"~5 5: - - - - . - . r. ..w . ;c '

, [_- .,

.

. _ _ .

June l'7,1985Camera No. 2367

Ir-192 61 Ci.

Gamma Industries. Baton Rouge, LA j

. ff| ,.

,y ~ ~ , , ' ' ' " N';i7%' 6 - -~* y ,~

--

'

. , . , . , , , , , ,_1 . . ..mr': .: -.~~J4*:.. -' *

t.-

j P.. - **-"-

3 W ;p.*;w ,*, g* , . = ,

p=. w _ s . . -,pygg, r., 3*,8 -

* .e,

. . * ' ' . k .e. 4.-... v.gg , ' 3 * . s s.-

..

!,, p

' '* .- . :-

* . i^ * * 4. g,1.-=-;.yq- ,

. a,. , : . A~ -. A ,e ., .'-.m.d*

. .% . ,-

,,

* * 71., r - - -e

-- .- ~ a. . .q,;;J j ._,'

'

''Q!r Q =-.,

-

*.. ., . . . . _ . , . $.j;. . . . . . ,. .nasr _ -

s.%A . . , , +

,, , - . a v w -f F yn- . ;* . , ,

'-*=a==,=%

.*, , . , , - - , ,, .'

,-s.'. ,. ~? *;N. . 1'.... -.

+ w ... . e .m ,~LQ2*- *-';. . . .

~' ~ ~

' ,.- .. M*'G'' 8 i 'a.. 4-*s,

. 'T-''~. & !. >%.,.a.

:. ; '.-m. untxx.1 4...:.. . , , . . .- -: . . a,

*k y.,

.. .. i.:cp. w-.

*] - *

_

W~ ' .N ,a,s , _ .. . ' '''9- A .70-$-

A rw ~.- r .:n , . . ;;3I. < .-

-_

h

a

_

_

*

. . -. .

:

..- - _. - ._ __ a

_-

.,

.

0+AI:

6 a| HEALTH PHYSICS ASSOCIATES LTD. CONSULTANTS IN RADIATION SAFETY'

1 I,.%.'W

33o4 couvenc:AL AVENUEINORTHBROOK,IL 60062 / PHONE 312/S64 3330

y . ~? *. j *:''' g.s4 %:.n *)Y:,. .Qf~$^n|.-+V.T

_ _ _ _ _ - - _ _ - . _ - . _isF *h[gQ''t.'I ? G. ';I;~ ,'G D-f * C&'.* $*.f4. ,.w p.',? .". Yf k'Qw*$'O''R.

? Qy'' L ' $, . . $. , G* Q;.

, ; ... -?,... .t s w y-. ,

J.

.

, -$-y,p ^.. ,M, ,-

'

.G, W .W. e..r.-.e

@, a@ e .uc - g.svj9. .. p c:x-

h $

gg ? %.JVS-t#T'ggpMg:00d%Fi . ,k ?fYhW ^

gg j^-r~~3 r-

. r;. ,i.:,en. 9, /.q.S.,.'

J .c (?.: y -

:- *. .. ..t. . . . . . . .

-.

.d -g

f.hd' Ihh4.k.'(b- , . . D' ' S'~.NT djdI '|' ,

'

_ - -

-,

,

' ' -June 17,1985

Hands-

. * - ~ ~ ": : w q . -' . .,;f y . g y yg,, - y-,-j..

_ _ ,'

- c*' ., -|: -j c:; -?$.}s.w;,EV.fhk?QbS . , -['

f :.a,. .. -

-:. o. .: . .x..

.....<'s,. e. .. > e ;..-. ,4, . ..g,,. ra.. ..

..

u. . . .

f ??p .w'..,.e .___.

.

. g s.

... ..

. .d2 :@c. . $ * ''' ,f, .. . .'

s9'

.}' p- .- e.. W Nf' '$ f.k?Y..

']~

g]&_,yr-erm, m-

1 frf .. ';p(4ty '

b-

h$;$ h..-

_

'|' ,

_ __ __ _ _. -. .. . . . - . -i

,

.,. .

-

,_ __- ---- _ _ _ _ - - -

_---._.,m

.,

~

j HEALTH . PHYSICS ASSOCI ATES LTD. CONSULTANTS IN RADIATION SAFETY

- ,k -

* ,

3304 COMMERCIAL AVENUE / NORTHBROOK ft. 60062 I PHONE 312.'564 3330

_

Q T' J,_$YDJ,WY3NIW .I'[ % [ f ^

8

~

9

l$,H-

?'i%ff, . . MStk.n -|: umMY.$ ""- '

.:d . *.A

r<g' +y fMf.:g/ .

g & .g.e m; .w,, . m-*'

.J{- gy~

(, v. g '' . +- df . -, ,

, - - pg ea"|'

-S$ r

. . . "^ k _' $yp $.

i,.$.P.R,m . _n4..* ~

3 Ee, .

-

(' g|.f|;:|.? EWs.

.~,.

>. ... b, 05% ~ " ' ~ : '' .g _'

..

-| .:. ? Y ,,..g : ^ O. ..:'.'

..- e

g*QS., - ' g4,,.7.5.jj- y.4"nr p e ,. u.;* ~) gg' ~. ^ +[:) ECy .. .,

-'

. .. . ;';y Au . ,QQ'" ~, i . . . . , x

_ . td .. '.,

__

-

,' June 17,1985 ggHands Position of . g,

, t._ .rC

- O$2 -

"-

:+ m ) p:. - ~ m ya' h'ikh' 2 n - * &E

| I win #. .s'' "

% ...- {N Si,

5g.gi 5;n

n+ c " wn 4-- V

^

,4; .- , =..' -

2,:,=y:% .. ~ w2. _ k, ,: .. ::;-.

-

f p M y; n r-

c y;d t . ', p. : ~ . ",7'W a 4*4*

-o<. ;ur@ eg"

..

.- +* ,

. r. . ,w- j~

..

~

s,, .- e = s....

I Y**",~* *'.. -

. :r csI. - * , ,, * g[' ~.* ;. s

.. '

.

. . _

__

. .

b

. . - . _ _ _

Attachment B, ,

, , ,

. .

NRC Dose Assessment

!

Gr.mma Constant for Iridium 192 = 5.2 R/hr/Ci 01 foot from NUREG/BR-0024

Source Strength = 61 curies

R = Distance to Source = 0.25 inches

Shielding Material - 1/8 inch of copper

2D=D g

D = (5.2R)(h-I)(Ci-1) x 61 curies 0.5$1n. 3600 sec.*

-1D: 203 R x sec 0 0.25 in. - unshielded

-1linear (cm-1) for copper 0.196 cm for 0.5 MeV photon=

0.318 cmShield Thickness = 0.125 in. x 2.54 cm/in =

-uxD =D eo

-1-(0.196 cm x 0.318 cm)D = 203 R e

sec

D = 190.7 R/sec 0 0.25 in. shielded with 0.125 in. copper

D(2 sec) = 381.4RD(3 sec) = 572.1RD(5 sec) = 953.5R

,

d

- , - ,,