ML20084J293

Responds to AEC Requesting Addl Info Re Investigation of Overexposure to Radiation.Corrective Ation: No One Permitted to Incur Doses in Excess of 2500 Mrem Whole Body Per Cy W/O Written Authorization

ML20084J293
Person / Time
Site:	Oyster Creek
Issue date:	04/03/1973
From:	Ross D JERSEY CENTRAL POWER & LIGHT CO.
To:	Kreusi F US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20084J291	List: ML20084J293
References
NUDOCS 8305120393
Download: ML20084J293 (1)

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[ Jersey Central Po,w,t.i(& Light Company

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madison AVENUE AT PUNCH BOWL Ro AD e MoRRisToWN. N.J. 07960 e 539 6118

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Mr. Frank E. Kreusi, Director Directorate of Regulatory Operations '

i 5 United States Atomic Energy Commission

= Washington, D. C. 20545 i

Dear Mr. Kreusi:

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Subject:

Oyster Creek Station r Docket No. 50-219 Additional Information/ Personnel Overexposures l

! This letter is in response to your January 31, 1973 letter to Mr. Ivan R. -

E Finfrock, Jr. requesting additional information regarding the results of our investi-gation into the overexposures reported to your office by letter dated August 10, 1972.

e r , The special General Office Review Board investigation determined the major

/ factors Icading to this incident ucre the unexpectedly high radiation IcVels encountere and the unanticipated repair work associated with the plant shutdown. The incident

- resulted from the desire of some personnel involved to insure 'that the work required N was properly performed to insure satisfactory performance of the plant and from the lack of a specifically defined and enforced radiation exposure limit (below the allowable level) at which the men should not have been permitted to work -in radi- 7 C ation areas except under very close control.

L f The action taken to prevent similar exposures from reoccurring were as P follows:

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= 1. No person will be permitted to incur doses in excess of 2500 mrem whole i body per calendar quarter without written authorization from the Manager, Nuclear b Generating Stations. Persons so authorited will be subject to special control while accumulating any additional exposure.

c E 2. A daily rg rt , current as of the previcus day, will be issued br the y radiation protection group at Cyster Creek showing accumulative quarterly exposure of '~

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all personnel for which such exnosure exceeds 1.23 ren whole bodv. The report will be

distributed to all foreren, suphrvisors , the stntion superintendent, ..nd the

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5 Nuclear Generatin;; Staticas. It contain's the man's name, position, and controlling i '

record of exposure. Station operating procedures have been changed to reflect all of the above it ns.

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I 8305120393 730613 Very truly yours, PDR ADOCK 05000219 s , , g- O y.m,,

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ii- Ocnah' A. E ' u Manager,.Nucleo. Generating Stations l .,

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' o u Ncw o Jersey Central Po,we & Light Company M AolSoN AVENUE AT PUNCH OoWL. Ro AD e MoRRisToWN. N.J. 07960 e 533-6111 April 3, 1973 Mr. F. E. Kreusi, Director Directorate of Re;ulatory Operations United States Atomic Energy Commission Washington, D. C. 20545

Subject:

Oyster Creek Station Docket No. 50-219 Quarterly Personnel Exposures The purpose of this letter is to advise you that two employees t

assigned to the Oyster Creek Station have possibly received whole-body

' exposures in excess of 3 rems during the first quarterly period of 1973.

This report is being submitted in accordance with 10CFR20.405.

In the interest of being conservative, this exposure is being reported as whole-bofiy exposure at this. time. The extent of the exposures range from 3.140 ren to 3.290 rem based upon film badge results. The exposure of each individual by name is listed in Attachment A to this letter. Each individual has been given notification of his exposure.

'r The exact'cause of the overexposure cannot be determined with any degree of certainty since in each case the violations were discovered upon receipt of film badge results which are analy:ed monthly. Each

~A individual had been engaged in various activities throughout the month, therefore, no direct correlation can be made. It bears mentioning, however, that as a general rule, neither of the individuals would have worked at their jobs in radiation fields for any length of time without at 1 cast one other individual being present, either assisting him or  :

working with him in some manner. Thus, it would be expected that more than one individual uould be exposed to the same radiation intensity.

Yet, in the case of the cxce ssive beta e:.posare, no other indiv:Jual rccciva an;. exposer; to oeta raaiatica during the peried of ti::e in question. in the case of the second indiviuual, the discrepancy between the film badge results cnd self-reading rocket desimeters was nearly tui:e as lar r,e as that notca for ot;uar individuals.

The reported exposure provided by our film badge service is currcat ly und_ r in'. estint iva .7 an out.;ida cons'il tant . Results of the inven :,at i ca shw.. 'd oc a . .t i . .

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Mr.F.E.KreO Page II O

April 3, 1973 Further strengthening of our personnel exposure accumulation is indicated by this event. More frequent film badge exposure data will be collec~ed t in the future as an individual approaches quarterly whole-body exposure limit as follows:

Accumulated Quarterly Film Badge Exposure Rance Reading Frequency 0-1.000 R Monthly 1.000-1.750 R Semimonthly

, 1.750-2.500 R Weekly 2.500-3.000 R Daily It is believed such practice will prevent further minor overexposures similar to those that have been reported to your office over the past year.

Very truly yours,

v. .t 6 $-cf .

sW Donald A. Ross (

Manager, Nuclear Generating Stations Pk Attachment cc: Mr. J. P. O'Reilly Mr. S. W. Porter 1

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