ML19326A257
| ML19326A257 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 03/15/1978 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Roe L TOLEDO EDISON CO. |
| Shared Package | |
| ML19326A259 | List: |
| References | |
| NUDOCS 8002030121 | |
| Download: ML19326A257 (3) | |
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Docket File F
NRC PDR Local PDR MAR 151978 LWR 1 File E. Hylton me w
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a Docket io: 50-346 IE *3) w/o enclosure Toledo Edison Ccepany R. Boyd bec: NSIC ATTti: iir. Lowell E. Ree R. DeYoung TIC Vice President, Facilities D. Vassalla ACRS (16)
Development F. Williams Edison Plana H. Smith 300 Madison Avenue K. Goller Toledo, Ohio 43652
- 0. Eisenhut G. L.w Gentlecen:
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SUBJECT:
STE/44 GENERATOR QUESTI0aAIRE - (DAVIS BESSE. UNIT 1)
By letter dated Decenter 9,1977 (copy enclosed) we requested otner PWR facility licensees to complete and subait a questionnaire on steam generator operating history that was enclosed. Tne letter statec tnat the request for information was approved by GAO under a blanket clearance. Questions have been raised aoout the appropriateness of this request for infomation in light of tne Federal Reports Act and about the referenced GA0 blanket clearance. Tnese questions have Deen discussed with representatives of GA0 and it was determined that a clarifying letter should be sent to each recipient of our criqinal letter. GAO nas agreed that this request ::roperly fits under the CAO blanket clearance for reports concerning possible generic problems and the applicable GAD clearance number should have been 20072 rather than R007).
The request for additional information was prompted by the continuing cegra-dation of tubes in all. three vencors' steam generators. Such degracation is an iniportant safety concern of the NRC because such tubes f orm part of the primary coolant pressure coundary. Several forms of degraddion that have been observed in steam generators in recent months have included the wastage of tubes at Palisades and other facilities, stress corrosion at Ginna and other facilities, vibration cracking and " dinging" of tubes at the Oconee (Bh) f acilities, antivibration bar tretting at San Onofre, and " denting" of tubes and associated support plate "hourglassing" and cracking at Surry, Turkey Point and about 15 other CE and y facilities. These events have pranpted the NRC to issue safety Orders. It is this need for important safety infomation that has dictated this request for additional infomation.
Gur original letter to other licensees acknowledged that selected portions of the infonsation being requested may already be available to the NRC, but not in a convenient format which is readily accessible.
We therefore requested /.[f Q, that they assist us by returning a single completed copy of the enclosed g
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MAR 15 1978 Toledo Edison Company questionnaire. We wculd like to clarify that an acceptable response to any item in the questionnaire would be to provide specific reference to any information previously submitted to the NRC, by an original response, or any combination thereof, whichever and for whstever reasons you elect to use.
Our original letter further requested that recipients submit any changes or additions to their initial submittal to reflect the future operating experience with their steam generators. This would enable us to maintain the information current, which, as we stated, we will periodically publish and send copies to all participants. As we indicated, this would enable the MtC and others to draw from the operating experience of the entire nuclear industry on an ongoing basis when making safety and other oecisions concerning steam generators in PW plants. He are planning to prepare a submission to GA0 for clearance of a request for reporting information regarding changes or additions to your initial sub.nittal under this request.
Based on the above, we request that you assist us by returning a single completed copy of the enclosed questionnaire to the Director of Nuclear Reactor Regulation. U. S. Nuclear Regulatory Commission, Washington, D. C.
20555, witnin 50 cays of r6ceipt of this letter. Please include any coments or suggestions for improving this infomation system which you may have.
This request for generte information is approved by GAO under a olanket clearance Number R0072. This clearance expires Decertoer 31, 1980.
Sincerely.
Orirdn::1 Signel b[
John l'. Stolz John F. Stolz, Chief Lignt kater Reactors Branch No.1 Division of Project Management
Enclosures:
- 1. Ltr. dated 12/9/77 W3(
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- 2. Questionnaire,
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See Page,3 x-LWR l' LWR I M LWR Q EHp/ red LEn @
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NAR 151978 Toledo Edison Company 3-
-s 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 M Street, N. W.
Washington, D. C.
20036 Leslie Henry, Esq.
Fuller, Seney, Henry and Hodge 300 Madison Avenue Toledo, Ohio 43604 D
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