ML19322B465
| ML19322B465 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 01/21/1975 |
| From: | Thies A DUKE POWER CO. |
| To: | Dicker G Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7912030303 | |
| Download: ML19322B465 (2) | |
Text
- - --
g g
Regulatcry C:det File DUKE POWER COMROPI Powra Bmz.orwo 422 souru cnunca srazer, cnAnzorrz, N. c. asaos ni s). \\
y\\'
A. C. Tu r zs o
~. ',
.O.Bcx 217e so. c. vice p.esice=r
//
V a'
- \\
p.couc+on==a T...s.s e.
I January 21, 1975
'S
);;ffy,1975, J
' 'Q, $f.~.
i'.)
A w.
-2 u
Mr. Gordon K. Dicker (f
S h
-l\\.
\\. '
.I.QUTny Y
\\ ~'
-[' A g Directorate of Licensing N.'g) 8
\\
d k'.;
Environmental Projects Branch' 4
U. S. Atomic Energy Commission L' d -. \\
Washington, D. C.
20545 Re: Oconee Nuclea e tion Docket Nos.
0-269
-270, -287
Dear Mr. Dicker:
In reference to your letter of December 5, 1974 regarding apparent inconsis-tencies in the Oconee Nuclear Station Semiannual Report for the period ending June 30,1974, the following response is provided:
1.
The presence and levels of 40K in air-particulate samples are very unlikely and inconsfstent with reported total beta activity.
The detector utilized to analyze these samples was changed from a NaI(TL) to a Ge(L1) detector. The background subtraction technique used with the new detector did not subtract the 40K peak.
This peak is due to the presence of 40K the concrete-aggregate of the counting-room walls and floors. The procedure has been changed to include the proper background subtraction with the new detector.
2.
The reported sir-sample volumes at the four locations vary by an order of magnitude.
The South Carolina State Board of Health has provided Bendix Nuclear Air Samplers with flow rates of lefm at the Warpath Recreation Area
[009], and near the boat dock at R. W. Gudger's Office (014].
Dake has used Gelman's Tempest Air Samplers with maximum flow rates of 10.5 cfm at the other locations.
Duke has recently replaced the air samplers at locations [009] and [014] with its own samplers, therefore, sample volumes should be similar in the future.
40 3.
Reported K levels in terrestrial vegetation are unusually high, by at least an order of magnitude. Although total beta levels are similar at any single location, samples collected in March 1974 contained no 40, while those collected in June were found to measurable levels of K
have extremely high levels.
The response of item 1. is also applicable to this question.
'Q1 is 7912080 30 3 g
r
- f..
Mr. Gordon V. Dicker p
-Pag 2 2 s
January 11, 1975 40, or any other naturally-occurring 4.
It is unreasonable to find no K
gamma emitting radionuclides, in soil.
The statement "No gamma-emmitters above background" indicates that values were not stated for isotopes normally expacted to be present in soil, such as 40K and radium and daughter products.
The milch-animal census performed by Duke revealed the presence of two cows, within the 5-mile radius of the site, that are not included in the radiological monitoring program.
The owner refused to sell us milk for our sampling program, since he uses the output of these two cows for buttermilk.
Very truly yours,
, G, T
A. C. Ihies ACT:ge
.