TXX-4994, Interim Deficiency Rept CP-86-21 Re Raychem Methodology for Testing Environ Qualification Which May Render Raychem Kit NPKS-02-01 Unacceptable for Specific Published Applications. Initially Reported on 860324.Next Rept Expected by 860926
| ML20209H501 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 09/05/1986 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-86-21, TXX-4994, NUDOCS 8609150267 | |
| Download: ML20209H501 (2) | |
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4 Log # TXX-4994 File # 10110 903.11 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER. 400 NORTH OLIVE STREET. L.R. 81. DALLAS. TEXAS 78301 September 5, 1986 EhM*E?d?E.7.*h b$b i i i
SEP - 81986 b, Mr. Eric H. Johnson, Director Division of Reactor Safety and Projects U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 QUALIFICATION OF RAYCHEM KIT NPKS-02-01 SDAR:
CP-86-21 (INTERIM REPORT)
Dear Mr. Johnson:
On March 24, 1986, we verbally notified your Mr. T.F. Westerman of a deficiency involving possible discrepancies in vendor (Raychem) methodology for testing of environmental qualification which may render the Raychem Kit NPKS-02-01 unacceptable for specific published applications. This is an interim report of a potentially reportable item under the provision of 10CFR50.55(e). We have submitted interim reports logged TXX-4772, TXX-4830, and TXX-4913, dated April 23, 1986, May 28, 1986, and July 16, 1986, respectively.
i The specific deficiency involves a heat shrink kit used for in-line butt-splices. The kit consists of two inner sleeves which are enclosed by an outer sleeve. When overlapped at the butt-splice, the effective outside diameter of the inner sleeves is greater than the specified useful range of the outer sleeve. Raychem has indicated the condition is the result of an earlier design deficiency in which the American Wire Gauge (AWG) standard was used to size the outer sleeves as opposed to specifying a kit-specific outside diameter.
Discussions with the supplier indicate the Raychem design deficiency has been corrected and CPSES applications of the kit have been specifically qualified.
Receipt and review of reporting documentation is scheduled for completion on September 5, 1986.
We are continuing our evaluation and anticipate submitting our next report by September 26, 1986.
Very truly yours, 8609150267 860905 DR ADOCK 0500 5
W. G. Counsil 0
JCH/amb a z>1rision or rexas vriurius us.ecraic cmuraur
o C - NRC R:gicn IV (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
U. S. Nuclear Regulatory Commission Washington, D.C.
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