ML20079M838
| ML20079M838 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 01/13/1984 |
| From: | Borst F PUBLIC SERVICE CO. OF COLORADO |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| P-84023, NUDOCS 8401270441 | |
| Download: ML20079M838 (2) | |
Text
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January 13, 1984 Fort St. Vrain Unit #1 P-84023
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Mr. John T. Collins, Regional Administrator I
M!b tu ear Regulatory Commission 611 Ryan Plaza Drive
,u jj Suite 1000 Arlington, Texas 76011
SUBJECT:
10CFR 20.302 Disposal Request For Sulfur 35 Dear Mr. Collins As your know, 10CFR 20.306 states that "Any licensee may dispose of the following licensed material without regard to its radioactivity:
(a) 0.05 microcuries or less,of hydrogen 3 or carbcq 14, per gram of medium, used for liquid scintillation counting.."
At the Fort St. Vrain Nuclear Generating Station we have identified sulfur 35 as a radioisotope of co'nce rn.
The salient features of sulfur 35 as compared to hydrogen 3 and carbon 14 are as follows, to wit:
Radioisotope E Beta (max), MeV Half Life Critical Oroan MPBB,pCi 3H 0.0186 12.3 y Body Tissue 1000 14C 0.156 5730 y Body Fat 300 35S 0.167 87 d Testis 90 In light of the fact that sulfur 35 exhibits similar characteristics to hydrogen 3 and carbon 14 and as such carries a small potential biological hazard, Public Service Company of Colorado hereby requests that pursuant to 10CFR 20.302, the Nuclear Regulatory Commission approve this application to dispose of 0.05 microcuries or less of sulfur 35 per gram of medium, used for liquid scintillation counting, without regard to its radioactivity.
8401270441 840113 DR ADOCK 05000
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. g-Your~ prompt action on this request is apreciated.
If this request has generated confusion o r_
questions, please call me~ at (303) 571--7436.
Very truly yours, Mch bSf Frederick J. Borst Radiation Protection Manager Fort St. Vrain Nuclear Generating Station FJB/dal
- cc: Mr. Phil Wagner, Project Manager, NRC i
Mr. G.L._Plumlee III, Resident Inspector, NRC 4
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