ML17272A198
| ML17272A198 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 11/14/1978 |
| From: | Stepp J Office of Nuclear Reactor Regulation |
| To: | Varga S Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7811290129 | |
| Download: ML17272A198 (5) | |
Text
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"~ 1 d 1978 1QRfORANDUM FOR:
Steven Varga, Chief Light Water Reactors Branch II4, DPM FROM
SUBJECT:
.. J. Carl. Stepp, Chief Geosciences
- Branch, DSE J
ROUND 1 QUESTIONS GEOLOGY'LANT NiQK:
7FPSS Nuclear Prospect 82 LICENSING STAGE:
OL DOCKET NUMBER:
50-397 MILESTONE NUMBER:
RESPONSIBLE BRANCH:
M. D. Lynch, LWR-4 COMPLETION DATE:
November 8, 1978 DESCRIPTION OF RESPONSE:
Q-1 of FSAR REVIEW STATUS:
Awaiting response A detailed review has been made of FSAR Section 2.5 and its appendices as tendered in March 1978 by the WasIdngton Public Power Supply System for an Operating License for the Washington Nuclear Plant 82.
In order to complete our review on schedule the enclosed questions should be answ'ered in a timely manner.
This review has been'onducted by Sandra Wastler, a geologist on my staff.
Origslal Signed hg hh J. C. Stspy J. Carl Stepp, Chief Geosciences Branch Division of Site Safety and Environmental Analysis
Enclosure:
As stated cc w/encl:,
R. Deriise J. Knight J. Stepp L. Hulman L. Heller W. Bivins R. Jackson O. Thompson DI IBUTION:
CKET PILE (50-397)
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360. 1 Xn the ~farch 28, 1978 Weston Geophysical
- Research, Inc. report entitled "Qualitative Aeromagnetic Evaluation of Structures in the Columbia Plateau and Adjacent Cascade Nountain Area,"
Figure 13 shows several north to northwest trending aeromagnetic linears in the vicinity of Badger Hountain and Jump Off Joe anticline.
The Weston report does not discuss the origin or interpretations of these particular linears.
The north trending linear crossing the Columbia River at the junction with the Snake River has an apparent offset of the magnetic low defining the Rattlesnake Hills anomaly.
Since these aeromagnetic linears trend toward the WPPSS-2 site, provide an interpretation of these features, including but not limited to the potential for their continuation to the north to the near site axea and a
discussion of the fault parameters if such an interpretation is proposed.
360. 2 During the review of the Columbia Plateau structures xelevant to the WPPSS-2 site as discussed in the FSAR, it became apparent that some'f the data and discussions presented were slightly different than that provided in Amendment 23 of the WPPSS 1,
4 PSAR.
For example, with'egard to the Wallula Gap fault the FSAR states that the "...probable fault movement occurred after the deposition of the Touchet beds, and thus less than 12,000 years ago";
Yet Appendix 2RH.4 of WPPSS lp 4y
Amendment 23 states the fault is older than the Qua'ernary Kenneweck fanglomerate based on trenching.
Also, in Amendment 23 2RH.8 the faulting along the Horse Heaven Hill Anticline is dated at 3.S my.
The 1'SAR, on the other hand, does not discuss this aspect, but questions the exi tence of the fault and indicates that it could be the sole result of folding.
Please clarify the origin of such discrepancies.
Possibly cross referencing MPPSS-l, 4 Amendment 23 could clarify the confusion.
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