ML19317F493
| ML19317F493 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 03/16/1977 |
| From: | Neighbors J Office of Nuclear Reactor Regulation |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8001140723 | |
| Download: ML19317F493 (4) | |
Text
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4g UNITED STATES t
s '.,h) /.'.' l NUCLEAR REGULATORY COMfalsslON U
'k'.).jJ!@i WASHINGTON, D. C. 205$5 5,
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%f..-:...J MAR 161977 MEMORANDUM FOR:
A. Schwencer, Chief, Operating Reactors Branch #1,00R FROM:
Don fleighbors, Project Manager, Operating Reactors Branch #1, 00R
SUBJECT:
FORTHCOMIflG MEETING WITH DUKE POWER COMPAN STATION)
Date and Time:
March 23, 1977, Wednesday 9:00 a.m.
Location:
Jocasse Dam Facilities Lake Jocasse, South Carolina
Purpose:
To discuss the seismic activity in the vicinity of Jocasse Dam (Discussion items attached)
Participants:
NRC D. Neighbors R. Jackson D. Simpson J. Kelleher DPC M.Tuckman, et al Consul tants 00%
)
VJ. D.Neig ors, Project Manager Operating Reactors Branch #1 Division of Operating Reactors
Enclosure:
Discussion items t
cc w/ enc 1:
See next page
DISCUSSION ITEMS FOR MEETING WITH DUKE POWER COMPANY OCONEE/JOCASSEE DAM 1.
Geology and Seismology Staff Objectives 2.
Specifics of Seismic Network Operation a.
Station locations b.
Network capability - magnitude and threshold, distance and depth capability Discussion of hypocentral activity since July 1976, c.
including focal plane solutions d.
Reporting procedures to NRC staff
()
3.
Specific Information on Geologic Reconnaissance of Site Area Location of discovered faulting a.
b.
Basis of fault age dating c.
Available photos of dam abutments and foundation d.
Subsurface geology - models 4.
Reservoir-Induced Seismicity Similarities - difference Jocassee to known damaging a.
5.
Seismic Adequacy of Dam Construction progress photos /airphotos a.
b.
Groundwater elevation before/after dam filling (time-head plots)
Embankment construction specifications (engineering properties c.
for design and basis, density, gradation for all zones, settlement and r.lignment of crests and slope as a function of time)
J MAR 16 y
q E,.,
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. c;_f
- d. _ Seepage rates (relief wells, weiss, drains)
Simple strain computations to assess approach to threshold of e..
cracking core f.
History of inspections and repairs to date g.
Sensitivity of dam to surface fault movement (thickness and location of filters, strain distribution - rough calculations) h.
Time - acceleration plot of expected earthquake (reference
.12g for 5.6 Mg earthquake - considerations, basis, justification) 1 s'
y c s.-
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_ c.
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I'!AR 161977161977Meeting for. -...
Duke Power Company
ORBil Reading NRR Reading P.. C. Rusche E. G. Case V.Stello D. Eisenhut K. R. Goller T. J. Carter OR Branch Chiefs OT Branch Chi.efs Project Manager Atcrney, OELD 0I 2 (3)
OSD (3)
B. Faulkenberry, I&E D. Thompson, I&E S. M. Sheppard Receptionist, Bethesda Staff Participants R. F. Fraley, ACRS (16) rm.
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