ML19319C034
| ML19319C034 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 11/05/1976 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Roe L TOLEDO EDISON CO. |
| References | |
| NUDOCS 8001300764 | |
| Download: ML19319C034 (2) | |
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- D. B. Vassallo J. Stolz 4
E. Hylton R. Heinema' D. Ross p
Cocket :lo. 50-346 J. Knight, SS R. Tedesco H. Denton V. A. Moore R. H. Vollmer Toledo Edison Company ATTil: Mr. Lowell E. Roe M. L. Ernst Vice President Facilities W. P. Gamm111 Development bcc:
J. R. Buchanan,flSIC Mad Avenue T. B. Abernathy, TIC Toledo, Ohio 43652 Gentlemen:
t10iiITORI!!G OF EXPLOSIVE MIXTURES IN THE GASE0l'S RADW3STE TREAT'lE.'IT SYSTEMS FOR DAVIS BESSE, U: LIT 1 Pursuant to our letter to you on October 29, 1976 where ue stated our position in Enclosure 1 to that letter regarding redundant oxygen monitors, we' have now detemined that we will not require the pro-visions for automatic control features actuation to orevent potentially-explosive gas mixtures in the gaseous radwaste control system. Our position is restated below.
We require redundant oxygen monitors for tne Davis Besse, Unit 1 gaseous raduaste treatment system. Both monitors shall alam locally and in the control room at the set points of 2" and 4% by volume of oxygen.
Upon alam of either or both nonitors, imediate action shall be taken to reduce the oxygen concentration to safe levels. If either gas monitor or any alarm is int,perable, gas samples shall 1;e taken and analyzed enca 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> during offgas system operation; and if the instru-ment can not be made operable within two weeks, the primary waste gas boldup system shall not be operated.
As stated in our October 29, 1976 letter, we request that you amend the Davis Besse. Unit 1 FSAR to conform to the above position.
In order to proceed on our licensing schedule we will need by flovember 15.
1976, your response regarding our pcsition and when you plan to have the redundant monitor insta,lled.
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NOV a 1975 Toledo Edison Company Please contact us if you have any questions concerning these matters, n;$1 ?.gned by' John F. Stofg John F. Stolz, Chief Light Water Reactors Branch fl Division of Project Management CC:
Mr. Donald H. Hauser, Esq.
The Cleveland Electric Illuminating Company P. O. Box 5000 Cleveland, Ohio 44101 Gerald Charnoff, Esq.
Shaw, Pittman, Potts and Trowbridge 1800 !! Street, N. W.
Washington, O. C.
20036 Leslie llenry, Esq.
Fuller, Seney, Henry and Hodge 300 Madison Avenue
-Toledo, Ohio 43604 e
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