ML20151A571
| ML20151A571 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/28/1988 |
| From: | Beck J, Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| TXX-88342, NUDOCS 8804070083 | |
| Download: ML20151A571 (2) | |
Text
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Log # TXX-88342
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File f 10010 F """
903.6 2.
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Ref f 10CFR50.30(a)
TUELECTRIC March 28, 1988 IIOhS7,U,,,
U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washingtor., D.C. 20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKETS NOS. 50-445 AND 50-446 JET IMPINGEMENT ANALYSES Gentlemen:
During the March 21, 1988 meeting with the NRC concerning CPSES jet impingement analyses, TU Electric committed to perform the following:
1.
Provide a description of the methodology that will be used to validate the existing high energy line break jet load calculations.
2.
Update Section 3.6B of the CPSES FSAR to include the revised jet impingement analysis methodology.
TV Electric is performing analyses to validate the high energy jet impingement loads presently being utilized at CPSES.
These analyses are being performed as follows:
1.
All jet loads previously calculated are being reviewed to ascertain whether they are conservative with respect to loads calculated using the methodologies permitted by the ANSI /ANS 58.2 Draft 7 Standard.
For steam, saturated water and subcooled water jets with thermodynamic fluid properties consistent with the range addressed in NUREG 2913, the NUREG 2913 methodology (the alternate methodolgy endorsed by the ANSI /ANS 58.2 Draft 7 Standard) is being utilized for this review.
For jets with fluid properties not consistent with the range addressed in NUREG 2913, the primary methodolgy of the ANSI /ANS 58.2 Draft Standard will be used.
2.
Newly calculated jet loads which are greater than the previously calculated loads (1.2., not conservative with respect to ANSI /ANS 58.2 Draft 7) will be individually assessed for their effect on target response.
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l Section 3.6B of the FSAR will be revised to reflect the usage of ANSI /ANS 58.2 i
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'oraft 7 Standard for the analysis of jet loads and jet geometry for jets emanating i
from high energy line breaks.
It is our intention to provide the NRC staff an i
advance copy of these FSAR revisions.
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q Very truly yours, f
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W. G. Counsil t
1 By:(L2 - d,7 >
J#h6 W. Beck Vice President, Nuclear Engineering BSO/amb c - Mr. R. D. Martin. Region IV Resident Inspectors, CPSES (3) 1
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