ML19308A613
| ML19308A613 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/06/1975 |
| From: | Thies A DUKE POWER CO. |
| To: | Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML19308A611 | List: |
| References | |
| NUDOCS 7911270614 | |
| Download: ML19308A613 (2) | |
Text
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DUKE POWER COMPM n
Powra Buttrneo Q.
4aa Soutn Gnuncu STnzet, CnAntortz,N.C. assos P. o. Dox 20s A C' *f 8 semion viet Pess ecur Y8 PAQ?UCTIOne AND Ta AN54el65104 May 6, 1975 Mr. Norman C. Moseley, Director U. S. Nuc1 car Regulatory Commission Suite 818 i
230 Peachtree Street, Northwest Atlanta, Georgia 30303
?
l Re:
IE:II:TNE 50-269/75-1 V
50-270/75-1 50- 287/75-1
Dear Mr. Moseley:
4 The purpose of this letter is to appraise you of additional information regarding T. tem 1.B.3, "Perconnel Radiation Exposure Records," of IE Inspection Report 50-269, ~270, and -287/75-1.
As you are aware, this item concerned the reduction of the exposure records of two individuals and not similarly reducing the records of all other personnel when a possible error in TLD dosimetry results was discovered.
In the case of the two individuals noted, the TLD badges were significantly greater than those indicated by their dositeter readings. This'is a relatively infrequent occurrence as dosimeters usually indicate greater exposure than the TLD's.
Subsequently, a letter received from the TLD vendor described uncertainties in the TLD results and' concluded that the fourth quarter TLD readings had been reported as 15 percent to 30 percent high.
Therefore, one individual, previously thought to hava received a dose of 3040 milltrem, was assigned an exposure of 2110 millires based upon his 1
film badge and dosimeter readings.
The second individual, previously thought to have received a dose of 3410 nillires, was assigned an exposure of 2965 millirem based upon his dosimeter readings and a conservative TLD correction factor of 15 percent.
In order to provide consistent radiation exposure records, a review of all records of the fourth quarter is being performed.
In instances where the dositeters indicate significantly lower exposures than the TLD results, and will support the minimum correction factor of 15 I
+
pou m6/y
Mr. Norman C. Moseley Page 2 May 6, 1975
.s percent suggested by the TLD vendor, the exposure reco'rds will be corrected by reducing the indicated exposure 15 percent.
It is expected that these records will be corrected by June 15, 1975.
Very truly yours, h l- )
S' A. C. Thies ACT:vr t
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