TXX-6511, Interim Deficiency Rept CP-86-41 Re small-break LOCA Evaluations of Effects of Operational Status of Equipment During Mode 4.Initially Reported on 860528.Westinghouse Owners Group Evaluating Issue.Next Rept Expected by 880229
| ML20215B620 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 06/12/1987 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| CP-86-41, TXX-6511, NUDOCS 8706170385 | |
| Download: ML20215B620 (1) | |
Text
1 1
Log # TXX-6511 File # 10110 Ref #
FR50.55(e)
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TUELECTRIC June 12,1987 I
William G. Counsli Executive Vice President U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 J
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKETS NOS. 50-445 AND 50-446 SMALL BREAK LOCA MODE 4 OPERATION SDAR: CP-86-41 (INTERIM REPORT)
Gentlemen:
On May 28, 1986, we verbally notified your Mr. Ian Barnes of a deficiency involving small break LOCA evaluations regarding the effects of the j
operational status of plant equipment during Mode 4 operation. This is an interim report of a potentially reportable item under the provisions of j
Our most recent interim report was logged TXX-6062, dated October 29, 1986.
J At this time, the issue of Small Break LOCA in Mode 4 has not been resolved by i
the Westinghouse Owners Group (WOG).
The WOG met with the NRC staff on l
November 6,1986, in Bethesda to discuss the W0G's plans for resolving the issue. As a result of questions arising from that meeting, the WOG sent a i
letter to the NRC dated January 8, 1987, (0G-209) which discussed the feasibility of applying Leak-Before-Break Technology in the resolution of this issue.
1 All WOG activities have been on hold pending word from the NRC, with the exception of the Operations Subcommittee's effort to prepare procedural I
guidance which will help operators deal with a LOCA in the shutdown modes.
This interim guidance was sent to WOG representatives in W0G-87-102 dated J
May 12, 1987, and it is being evaluated by TV Electric.
We anticipate submitting our next report on this issue by February 29, 1988, i
Very truly yours, M
W. G. Counsil 1
JCH/gj I
l c - R. D. Martin, Region IV Resident Inspectors, CPSES (3) l 8706170385 070612 O
PDR ADOCK 05000445 Th t
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0 400 North Olive Street LB 81 Dallas, Texas 75201
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