ML19345G366
| ML19345G366 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 09/19/1973 |
| From: | Ferguson R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML19345G365 | List: |
| References | |
| ZECH, NUDOCS 8104070044 | |
| Download: ML19345G366 (3) | |
Text
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UNITED STATES
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ATOMIC ENERGY COMMISSION
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WASHINGTON. O.C. 20545 o 'y SEP 19 E73 nun
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DOCKET NOS.: 50-338, 50-339, 50-404 AND 50-405 1 APPLICANT :
VIRGINIA ELECTRIC AND POWER CO:@ANY (VEPCO)
FACILITY NORTH ANNA IOWER STATION, UNITS 1, 2, 3 AND 4
[
SUMMARY
OF MEETING HELD ON SEPTEMBER 7, 1973 Messrs. John U. Funkhouser, Bruce Goodwin, and Stephan Cle=ent met with the Regulatory staff at the College of William and Mary in Williamsburg, Virginia to discuss observations made during their visits to the containment excavation for Unit 1 in February and March 1970. These observations were the basis for their statements to the press in 1973 that there were obvious indications of a fault in the Unit i excavation.
A list of attendees is enclosed.
The significant points discussed are as follows:
1.
Messrs. Funkhouser, Goodwin and Clement presented a series of slides of the interior walls of the contain=ent excavation for Unit 1.
The
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l geologic features shown on the slides were compared to those shown T$[
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on the photographs of the Unit 1 excavations that are contained in the S&W report regarding rock conditions in the excavations of f
Units 1 and 2.
The staff concluded that no new features were shown on the slides.
2.
Mr. Funkhouser presented rock samples of different rock types as being representative of material above, below and in the " chlorite seam" (see-3.C below).
These rock samples were taken from the excavation from Unit 1 in 1970 and from the excavation for Unit 3 in 1973.
3.
Messrs. Funkhouser, Goodwin and Clement identified the geologic features that they deemed characteristics of a fault as follows:
' Substantial quantities of soft clay in the " chlorite seam".
a.
b.
Slickensides in the " chlorite seam".
Different rock types in juxtaposition; i.e., grnite or granite c.
gneiss in the hanging wall and hornblende gneiss in the footwall of the " chlorite seam".
d.
Uniform dip and uniform strike of the " chlorite seam" as opposed to general regional non-uniformity.
8104 07o og
SEP 19 B73.
I The staf f described Dames and Moore model of fault as a " bedding 4.
The staff stated different rock types on each side of plane" fault.
Zone D appeared consistant with such a model.
In addition, the
" bedding plane" model does not require substantial movement to Mr. Funkhouser, Goodwin produce different rock type juxtaposition.
and Clement appeared to agree that they did not observe anything that contradicted the " bedding plane" model.
It was generally agreed that the fault strike following the contour of the contact between granite gneiss and hornblende gneiss supports the proposed model.
Messrs. Funkhouser, Goodwin and Clement observed no evidence of offset 5.
in the excavation for Unit 1.
Their statement that substantial movement was evident was based on the information given in item 3.C above.
Mr. Funkhouser stated he informed the VEPCO project engineer of his 6.
opinion that a fault existed.
. M f' Robert L. 20(k fson, Project Manager Pressurized Water Reactors Br. Mo. 4
-s f
Directorate of Licensing t
Enclosure:
~~
i Attendance List cc:
R. C. DeYoung A. Schwencer R. W. Klecker Ro (3)
TR AD's TR BC's RP AD's RP BC's P. Leech R. Ferguson E. Goulbourne D.' Kartalia R. Fraley (16)
J. Hendrie Participants 4
I se
.=
MEETING ATTENDANCE LIST NORTH ANNA POWER STATION, UNITS 1, 2, 3 AND 4 Atomic Energy Coc: mission R. L. Ferguson W. Gammill S. Coplan A. Caroone H. LeFevre USGS F. Houser
- SELF J. Funkhouser B. Goodwin S. Clement F
f
- Part-time attendance
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- . _ _ *