ML20037B071
| ML20037B071 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 09/18/1964 |
| From: | Bower D COMMONWEALTH EDISON CO. |
| To: | Doan R US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20037B072 | List: |
| References | |
| NUDOCS 8009030786 | |
| Download: ML20037B071 (2) | |
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- fr. R. L. Doan, Director Divicion of Reactor Licensing U.0. Atomic 2nergy Cc==1c31on
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20545 Re Proposed Revision of Technical Specification on Stack Limita and Monitoring Docket 50-10 Iri1*C#7
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Dear.'tr. Doan:
Commonwealth Edison Company hereby respectfully rsquests pursuant to paragraph 3-a(4) of License DPR-2, as amended, for thn Dresden
.inclear Power Station that Anpendix A to said license be amended ay revision of 1:en c-c,
.1rtorne __..n m ' and dele icn c.J _;ca 3.-d, " General".
The propoced revision as attached and marked Exhibit A, is intended to (1) po sit substitution of an improved method of monitoring for radirejses in place of the criginsi method, (2) clarification of the permissible average and maximum emission rates for radiogases, and (3) establish release limits and monitoring method for airbene radioactive materials other than radiogases.
With regard to methods of monitoring radiogases, the original and currently effective technical a ification prescribes the monitor-ing of a single isotope, i.e. X
, as a measure of the total radiogas activity emitted.
L y-Flence in recent years has estat-lished that~ the monitoring of gross radiogas activity is better and more reliable than attempting to measure specific radiogas l
isotopes.
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Mr. R. L. Doan, Director September 18, 1964 Se technical specification is also ambip ous with respect to the duration of.an emission rate in excess o. 0.7 curies per second before manual shutdown of the reactor would be required.
The record clearly indicates the intent that an emission rate in excess of 0.7 curies per second would not require manual shutdown unless it were " continuous".
'3ee tesnscript of July 16, 1959 i
- p. 191.)
In Cocuconwealth's opinion it is desirsble to specify in
.ippendi: A ?cmissible average emiacion rates for radiogna 1ctivity related to durstion as well as a maxistus oemissible emission rate.
Tne current technical 3pecification 13 3ilent regarding limits and conitoring mechods for other airborne radioacti/c material efflu-enta.
Commonwealth concurs in the opinion expressed by Division of CorJpliance inspectors that it is technically correct and proper that 1;.rcLts and monitoring methods should be established for these airborne radioactive materials and made part of the technical specifications.
Accordingly, Cocunonwealth is installing additional monitoring equilznent, in the form of filters, on the existing stack monitoring equi;xnent and suggesta that the technical speci-fications be appropriately amended.
Se technical basis for this proposed revision 13 presented as an attachment to this letter as Exhibit B.
In the event you find that a discussion or further infomation would assist you in your consideration of this matter,)I would appreciate your phoning me (Area Code 312 - RA. 6-1200, since this matter is of the utmost and vital importance to the continued operation of Dresden Station.
Very truly yours, CCpetomEAL151 EDIBGE COMPANT Y
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Treasurer Submitted and sworn to befora me this 17th day of September, 1964 by said Ih R. Bowe n
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