ML19220A734
| ML19220A734 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/14/1974 |
| From: | Stepp J US Atomic Energy Commission (AEC) |
| To: | Kniel K US Atomic Energy Commission (AEC) |
| References | |
| NUDOCS 7904240190 | |
| Download: ML19220A734 (2) | |
Text
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Karl 4siel, Chief, Branha22B?,L.
Q-1 QUESTION ON FOUNDAIION ENGINEERING PLANT NAME:
Three-Mile Island Nuclear Station Unit 2.
LICENSING STAGE:
OL DOCIET NUM3ER:
50-320 RESPONSIBLC B RAN Cli: LWR 2-2 RZQUESTED COMPLETION DATE:
July 19, 1974 APPLICANT'a RESPONSE DATE SECSSSARY FOR NEXT ACTION PLANNED ON PROJECT:
ASAP DESCRIPTION OF RESPONSE:
Provide Additional Information REVIEW STATUS:
Site Analysis 3 ranch avaiting responses, The attached draft question is posed as a result of a visit to the above site on J uly 18, 1974 by AEC staff.
This question was prepared by Dr.
L.W.
Heller, SA3, L.
J.
Carl Stepp, Section Leader Geology, Seismology, & Foundation Engineering Site Analysis Branch Directorate of Licensing duelosure:
As stated DISTRIBUTION:
cc:
w/o enclosure L: Docket File A.
Giambuss L:Rdg W.
Mcdonald L:SAB J.
Panzarella L:AD/SS cc:
w/ enclosure S.
Hanauer F.
Schroeder V.
Moore B.
Washburn L.
Deraton H.
Denton SS 3Ca A.
lenneke L.
neller
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Form AEC.318 (Rev. M3) AECM 0240 2 u. s. eovs===amt Peturiae orric as s en.sae.s ee 790azaoao A
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e SITE ANALYSIS 3 RANCH - GEOLOGi, SEISMCLOGi, A:!D FO U::D ATIO:I ENGINEERING Q-1 Q U E S T IO:i ON FO U :i D AT I O N ENGINEERING PREPARED 3Y-Dr.
L.U.
Heller The rip-rapped dike section between the two intake structures shows so=e surficial distress in the half next to the Unit 2 intake structure.
In this area, possible erosion and sub-sidance of the supporting dike caterials m a:- aave caused several low spots and sags to the surface of the rip-rap.
The construction sequence of the dike and cofferdan for the Unit 2 intake does not assure that rip-rapped slopes were supported by properly engineered fill.
Investigate the quality of this fill and perform appropriate stability analysis of these slopes to assure that they will remain stable under static and seismic loads.
Show thac the dike section cannot slide into the
'c a t e r intake area and create a blockage.
qq. eT e r-GrJ os a. C