ML19261F023
| ML19261F023 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/08/1972 |
| From: | Harold Denton US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7910180639 | |
| Download: ML19261F023 (2) | |
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.s AUS $ & N R. C. DeYoung, Assistant Director for &?'s, L SUFFIDCITAL HYDROLOGIC ENGIEERING Sir.ARY PLANT NAE: Three Mile Island Unit 1 i
LICENSING STAGE: OL DOCKET UUE::R: 50-289 i
RESPONSI2LE BRANCH: R7 Br. #t EQUES'IED C0!GLETION DATE: August 18, 1972 AFFLICA'":3 ESPOUSE DATE NECESSARY FOR NEXT ACTICN PLAITED ON FROJEC": Ecce DESCRIFIION CF RESP 0KSE: None j
REVIEW STATUS: Complete Enclosed is a supplemental hydrologie engineering sunmary prepared by L. G. Hulmme, for your use in preparing the ACRS report and public safety evaluation on the subject plant. The supplement is intended as an addition to the previously furnished summary to confirm the plant flood design bases as a result of the reecrd June, 1972 flood at the site.
DISIRIBUTICN Odginal si;:ned by L - Suppl #
H. R. Denton L - Rdg AD/SS - Edg Harold R. Denton, Assistant Director SAB - Edg for Site Safety Directorate of Licensing
Enclosure:
As stated cc: w/o enclosure A. Giambusso W. Mcdonald ces w/ enclosure S. H. Hanauer J. Hendrie A. Schwencer H. Schierling F. Kilpatrick, USGS
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e SUPPLDENTAL HYDROLCGIC ENGIIEERING SGMY THREE MILE ISLAND UNIT 1 D0c. NO. 50-289 The record fleod of June, 1972 resulted in a peak flow of approxi=ately 1,000,000 cubic feet per second. Parts of the island in the vicinity of the cooling towers were flooded because downstream portions of the levee were unccmpleted.
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Frca preliminary high water level and flow rate estimates, the adequacy of tne applicant's flood design bases has been re-analf::ed and found conservative. The necessity for the applicant's cccmitment to inspect and repair, as necessary, the levee system annually and after every major flood was indicated by the minor riprap displacement that occurred as a result of the June,1972 fleed, and the vegetation which has grown en the levee face since constructicn of completed portions.
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