ML20087K392
| ML20087K392 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 04/16/1975 |
| From: | Burstein S WISCONSIN ELECTRIC POWER CO. |
| To: | Rusche B Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19280D632 | List: |
| References | |
| NUDOCS 8403260147 | |
| Download: ML20087K392 (2) | |
Text
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s Mr. Benard Rusche April 16, 1975 limit is employed to avoid overexposure.
At the time the contractor employe left the site, it had been determined from dosimeter readings that a total exposure of 2.46 rem was received at Point Beach Nuclear Plant, which was well within the allowed 15% margin.
High exposures were expected since the radiation fields in the steam generator channel heads averaged 25 to 30 P./ hour.
To monitor personnel working in the high-radiation areas, all entries, exposure timekeeping, and exposure data were continuously recorded by health physics personnel stationed at the entrance to the steam generator channel heads.
Daily exposure summaries were maintained.
New high-range pocket dosimetry devices were used.
Drift and response checks were completed on these devices prior to use.
The contractor employe, in addition to the TLD monitoring devices issued at Point Beach Nuclear Plant, used a Company-issued TLD device.
Results of this TLD device indicated a total exposure for the month of March to be 1.7 rem.
Due to the high-radiation areas encountered and the work time in the areas, it is conservative to assume that the 3.1 rem exposure is correct and results in an actual quarterly overexposure of 0.100 rem.
As a matter of interest, the contractor employe involved is the senior contractor supervisor who was in charge of the work being performed.
It is believed that all avenues of administrative approach to control radiation exposure in high radiation areas have been undertaken and no corrective action is required.
The discrepancies in the monitoring devices remain unanswered and the corrective action undertaken by Point Beach Nuclear Plant in this respect will be additional surveillance of the vendor's TLD analysis programs.
No other occasions of discrepancy between pocket dosimetry devices and TLD results beyond the 15% margin have been experienced.
As an additional measure to prevent a recurrence of this type event, redundant high-range pocket dosimetry devices will be incorporated as part of the requirements for'high-radiation area entries of this type.
Very truly yours, D
B403260147 750711
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PDR ADOCK 05000266 T /)
S PDR Exe tive Vice President Sol Burstein Copy to Mr. James G. Keppler, Regional Director Directorate of Regulatory Operations, Region III
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April 10,1975 -
Mr. Fred Gerardine 17 National Drive Pittsburgh, rA 152M
Dear Mr. Gerardine:
FJ:PO.'c or EXPO 5UTZ TO 1%DIATIO'i Di EXCESS OF APPLICABLE LHiITS SOCIiu, $1:CURITY EO. 168-26-6468 DATH o? BIRTH: l'AT:CH 10, 1933____
Data obtcined by personnci =x)nitoring equip =cnt and/or survey inileate that you vero c.Q33ed to 0.100 rc:a of radiation to the whole body in cIcess of the applicable limits in 10 CFR 20.
l Your en: =ure for the period March 4,1975 to March 28, 1975 was detemined to be 3.1 ren. Questions concerning this report should be directed to the R.diochemical Engineer or !!!calth Physicist at the Point Bosch Nuclear Plant.
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This report is funi=hed to you under the provisions of the AM-le Ener9y Cwaission's ros.slations 10 Crr Part 19.
You shman pe,:wrve i'aiu a e2m t. for zuture r=lerence purposes.
Very truly yours, WISCCCSIN Micri2G:ut PO'.o:R COMPANY 9
ange G. A.
.arquardt Beal i Physicist -
Point Beach Euclear Plant Bi Radiochemical Enginccr -
ckd Point Deach Nuclear Plant
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D. S. Nucigar Regulatory Cc:=nission e
Washington, D. C.
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Directorate of Regulatory Operations Region III U. S. Nuclear Regulatory Cocnissica l
799 Roosovolt Rosd Glen Ellyn, IL 60137
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