ML19327B590

Interim Deficiency Rept CP-89-027 Re Defect in ASTM A500 Tube Steel.Initially Reported on 890926.Crack Like Deficiency Identified on Instrument Air Support.Next Rept Will Be Submitted Prior to Fuel Load for Unit 1

ML19327B590
Person / Time
Site:	Comanche Peak
Issue date:	10/26/1989
From:	William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CP-89-027, CP-89-27, TXX-89777, NUDOCS 8911020135
Download: ML19327B590 (1)

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. .O Log # TXX 89777 File # 10110 r C 903.9  :

N#ELECTR/C Ref # 10CFR50.55(e) j i

October 26, 1989 l man = J. cehm. Jr. '

n,n,= iw ar,ar,u I

U. S. Nuclear Regulatory Commission  !

Attn: Document Control Desk  :

Washington, D. C. 20555 [,

SUBJECT:

COMANCHE PEAK STEAN ELECTRIC STATION (CPSES)  !

DOCKET NOS 50 445 AND 50 446 ,

DEFECT IN ASTM A500 TUBE STEEL SDAR: CP 89-027 (INTERIM REPORT)  !

Gentlemen: j On September 26, 1989, TV Electric verbally notified.the NRC of a deficiency involving ASTM A500 tube steel. This is an interim report submitted on a  !

potentially reportable condition under the provisions of 100FR50.55(e).

Specifically, a " crack like" deficiency was identified on an instrument air l support. This deficiency was observed on ASTM A500 tube steel on the inside [

wall surf ace, parallel to and outside the heat affected zone of the weld. *

>i Material of this same heat number has been used in the fabrication of safety-  :

related pipe supports.  :

Further evaluation is required to establish the safety significance and assess ,

the reportability of this issue. Our next report will be submitted prior to f fuel load for Unit 1.

t Sincerely,

,  ? ,?-

l William J. Cahill, Jr. 1 HAM /sup c - Mr. R. D. Martin, Region IV i

Resident inspectors, CPSES (3)  ;

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B911020135 89 026

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400 North Olive Street LB. El DaSas. Texas 75201,

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