ML20137Q874
| ML20137Q874 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/26/1985 |
| From: | Travers W Office of Nuclear Reactor Regulation |
| To: | Standerfer F GENERAL PUBLIC UTILITIES CORP. |
| References | |
| CON-NRC-TMI-85-095, CON-NRC-TMI-85-95 NUDOCS 8512050373 | |
| Download: ML20137Q874 (2) | |
Text
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NRC PDR Local PDR DCS TMI HQ r/f TMI Site r/f WDTravers November 26, 1985 MTMasnik NRC/THI 85-095 RAWeller PGrant RCook CCowgill Docket No. 50-320 RHall 4
LChandler IE ACRS GPU Nuclear Corporation M-Town Office ATTN: Mr. F. R. Standerfer Service List Vice President / Director, THI-2 P. O. Box 480 Middletown, PA 17057
Dear Hr. Standerfer:
Subject:
Safety Evaluation Report (SER) for Core Stratification Sample Acquisition
Reference:
Letter from F. R. Standerfer, 4410-85-L-0147, to B. J. Snyder, dated August 30, 1985 In order to complete our review and evaluation we will require additional information. Please respond to the following items so that we may respond to your request.
1.
Describe your control program that assures that a length of drill string long enough to reach the lower vessel head is not available. This should include the case where a drill hole is abandoned due to a broken bit.
2.
What load restrictions '(1.e., torsional, horizontal and vertical force limits) will be placed on the core bore equipment to ensure that incore instrument nozzles will not be degraded. What is their bases?
3.
Please_ provide details of drilling platfonn and actions including:
a.
Load and load distribution of platform b.
Location of supports and contact points c.
Dynamic effect of drilling action d.
Total weight of_ drill rig 4.
Please provide analyses and calculations to substantiate that:
Existing structure can take the platform load and operating forces a.
b.
Reactor vessel can take the operating forces; and c.
Accidents in operation will not damage the system 5.
Assuming failure of an incore instrument nozzle what is the maxinum Icak rate? (Include comparison to makeup rate and recirculation rate)
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Mr. F. R. Standerfer November 26, 1935 Based upon discussions between our staffs we understand that the next revision to your SER may obviate the need to respond to item 2.
If that is the case your response to t:iis item may be omitted.
Sincerely, Willian D. Travers Director THI-2 Cleanup Project Directorate CC:
T. F. Demnitt R. E. Rogan S. Levin
- 11. H. Linton J. J. Byrne A. W. Hiller Service Distribution List (seeattached)
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