ML20133F278
| ML20133F278 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/29/1985 |
| From: | Travers W Office of Nuclear Reactor Regulation |
| To: | Standerfer F GENERAL PUBLIC UTILITIES CORP. |
| References | |
| CON-NRC-TMI-85-052, CON-NRC-TMI-85-52 NUDOCS 8508080220 | |
| Download: ML20133F278 (2) | |
Text
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NRC PDR Local PDR DCS TMI HQ r/f TMI Site r/f
~a July 29, 1985 BJSnyder NRC/THI 85-052 WDTravers MTMasnik RAWeller PGrant RCook Docket No. 50-320
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CCowgill LChandler
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GPU Nuclear Corporation IE r.
ATTN: Mr. F. R. Standerfer ACRS
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Vice President / Director, THI-2 M-Town Office P. O. Box 480 Service List tiiddletown, PA 17057
Dear Mr. Standerfer:
Subject:
Seismic Design Criteria
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Reference:
Letter from F. R. Standerfer, 4410-85-L-0077, to B. J. Snyder, dated April 16, 1985 s
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,1 The referenced letter requested NRC review of the applicability of seismic 7
design requirements to THI-2 post accident systems.
In order to complete our review and evaluation we will require additional y
information. The following questions are listed by the section in your safety i
evaluation which they refer to.
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3.1.1.3(1) i:G Y'
The referenced samples were from the core debris bed in the upper a.
portion of the core. Do you consider this sample to be limiting o
and/o~r to be representative of all the core zones?
i;y b.
You indicate that only 1.5% of the material is less than 45um.
,y Since particles larger than 45um (perhaps up to 100ve) can be pyrophoric what percentage of the core region is in this particle an size range?
jPy c.
Since portions of your detailed defueling strategy are not finalized 4
how will you assure that these activities will not " generate n-significant additional quantities of fines in the size range of i:1 concern"?
Such activities may include, plasma arc cutting, y
mechanical breaking of the suspected fused zone and core boring.
N 3.1.2.10 What is the basis for the maximum inventory in the waste-storage area? Is. this controlled in some manner, i.e., by procedure?
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NRC FORM 318 (10-80) NRCM 024o OFFICIAL RECORD COPY
Mr. F. R. Standerfer July 29, 1985 d
I Should you have any questions regarding this request for additional infonnation please contact L. Thonus at 948-1126 or myself.
Sincerely, 1
f William D. Travers Deputy Program Director TMI Program Office cc:
T. F. Demitt i
R. E. Rogan S. Levin 1
W. H. Linton J. J. Byrne A. W. Hiller Service Distribution List (seeattached) 4 T
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