ML18003A406
| ML18003A406 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 01/26/1979 |
| From: | Barth C NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD) |
| To: | Ahearne, Bradford P, Gilinsky V, Hendrie J, Kennedy R NRC COMMISSION (OCM) |
| Shared Package | |
| ML18003A408 | List: |
| References | |
| NUDOCS 7902060060 | |
| Download: ML18003A406 (6) | |
Text
Chairman Hendrie Commissioner Gilinsky Commissioner Kennedy Commissioner Bradford Comoissioner Ahearne V.S. Nuclear Regulatory Commission ltashington, D.C.
20555 January 2t, 1979
//~j'~~
DISTRI RUTION-
'arth C utchin Reis Shapar/Engelhardt/Scinto Formal File (2)
Reg Central:
LPDR S.Miner O.Parr S'.Bajwa W.Regan ll.Paton H.Smith D.Vassallo In the Matter of Carolina Power and Light Company (Shearon Harris Nuolear Power Plant, Units 1, 2, 3 and 4)
Docket Nos. 50-400 50-401 50-402, 50-403 Gentlemen:
The captioned constr uction permit proceeding is now pending before the Commission except for the issue of the management capability of the Applicant to design, construct and operate the proposed fa~cility which has been remanded to~the Licensing Board to take further-evidence.
We have previously transmitted to you, for information purpose only, several memoranda from NRR regarding faulting at the site.
Enclosed
,for your further informatiOn is a report of an flRR staff geologist's visit to the site.
If further information discloses any. possibility of these faults constituting serious matters, we will promptly info&
you.
There have been a number of faults discovered at the facility site, and to date, none of them have proven to be capable as defined in 10 CFR Part 100.
Sincer ely, Charles A. Barth Counsel for NRC Staff
Enclosure:
As Stated cc:
(w/enclosure)
Alan S. Rosenthal, Esq.
Dr. John H. Buck Michael C. Farrar, Esq.
Ivan W. Smith, Esq.
Hr. Glenn 0. Briqht George F. Trowbridge, Esq.
Dennis P,. tiers Atomic Safety and Licensing jA'ppeal Board Atomic Safet and Licensin OFFICE~
SURNAME~
OATS 3R'r.
J.
Y. L e s, Jr.
--4ichar:d-E.-- ones --Esq.-----
Thomas Envi, Esq.
- MakeCo'un'ty"'P'u61'i'c-'Lib'ra'rr 8 ard Panel
Doc cling-and--Se vice-Section.
OELD
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I~<BI~>ORAIIDUII 1:OR;
.J. Carl Stepp, Cl<ief Groscie>>ces
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Rob! rt E. Jac'eson, I,< a<ler~>
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Censci<!>>c<~s Br..<>>ch, I)il',;J)
A. T.
C:< r<lo>>e, G."o log i s t Geology
& S>>i;oology S ~ cti<
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oscie>>c<.s Brn>>ch,
~<BE SUB.IECf:
SI'I'E V < S lT 'I'0 SIII'.<'i'i<)t: IIA".R<S I:i<<1',iR I'."'4 I':<'if On December 8,
1978 I visited i..he Shearon 11>>rris pla>>t site to inspect the main dnm core trench between stations 2~90 and 3+90 and the diversion conduit excavation in the vicinity of station 2+50.
I was accompanied by representatives o'f the Carolina Power and Light Company (CP&L) and Ebasco Construction Company.
Prior to the field inspection I attended a presentation by Ebasco geologists which provided the results of their structural analysis and thin section study of the schistose zone in the dive'rsion conduit excavation west wall.
Following the field inspection all parties met to discuss the conditions observed in the field and to plan a program of investigation and inspection of the main dam core trench.
An attendance list is enclosed.
The brittle fracturing and minor faults designed A,
B and C, reported to us on November 9, 1978 and observed in the main dara core trench, demonstrate more recent deformation of'he rock than the old, deep, ductile deformations which
'apparently caused the major fault movements in the region.
While observing the minor faulting in the south half of the core trench between s'tations
-2+90 and 3+90, I observed evidence of possible significant larger scale faulting in the station area along the northwest wall of the trench.
I brought this to the attention of representatives of CP&L and Ebasco, requesting that the area be mapped in detail with special attention to possibly more significant faulting than that already observed.
After inspecting the schistose zone in the diversion conduit excavation west wall, I informed CP&L that I had completed my inspectioqyand would require no further information on the area.
J.
Carl Stepp CP&L personnel indicated in the meeting that they expect more faults to be uncovered later and they would like to have an under-standing with us that each disclosure doesn't require immediate notification to NRC.
They want to characterize and categorize the faults in the area and thus be able to evaluate the significance of newly di'scovered faults.
This characterization would determine whether or not a fault would be reported to NRC.
I responded that this was unacceptable since NRC staff must evaluate any faulting at nuclear power plant si'tes..
I said that CPSL is expected to inform NRC of newly-discovered faults as per the November 16, 1978 memo from D.
C. Stepp to 0.
D. Parr.
We would evaluate the signtfi'cance of the newly-discovered faults wi'th respect to our current knowledge of site faulting and its age of last movement.
If a site vi'sit is deemed necessary, every effort would be made to visit..the sita as soon as possible to avoid disrupting construction schedules.
At the meeting, I was informed that the rockfill testing for the main dam would begin January 1979; and the U ~ S.
Corps of Engineers, as per arrangements made witn NRC staff, will do the testing.
Additional material for rockfill will come from the spillway area excavation.
Drilling and grouting completed to date is roughly between stations 4+00 and 4+50 of the.ain dam core trench.
The low secondary grout take confirmed the low primary grout take.
For the Auxiliary dam and dike the random rockfill xone testing is being done to confirm the Ebasco CH-8 specs.
The trsting now done used CH-4 specs for the 4'est Auxiliary, dam and the emergency service water discharge.
Testing will be completed the week of December 17, 1978.
Consolidat'ion grouting between stations 29+00 to 33+00.will be completed by the end of December 1978.
Enclosure:
As stated W. C:..r,....
A. T. Cardone, Geologist Geology and Seismology Section Geosciences Branch Division of Site Safety and Environmental Analysis cc:
w/enclosure R. Denise J. Stepp L. Heller R. Jackson 0.
Thompson S. Niner T. Cardone D. Vassallo PDR Local PDR
Bob Black Ashleigh Lucas Ismail Giloglu David Danady Gary Forrest Stephen B. Harper George Forehand Sarah >lilkinson Tom Cardone
. Wilcox, Jr.
R. Bradley G. L. Stirewalt M. Tilford R. Parsons CP 5 L Licensing CP 8
L Project Resident Engineer EBASCO - Geologist CP 8
L Geologist CP LL EBASCO - Geologist CP 5 L Site Principal gA Specialist EBASCO -'eologist NRC NRC - 01'E NRC - OI'E EBASCO Principal Geol ogi'st EBASCO -, Geologist CP 8
L Site Manager SHNPP
J l
L