ML19327B882
| ML19327B882 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 11/07/1989 |
| From: | Cruse C BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-89-001, IEB-89-1, NUDOCS 8911140128 | |
| Download: ML19327B882 (2) | |
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- t' B ALTIMORE -
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ELECTRIC 44 ;
,s CHARLES CENTER. P.O. BOX 1475 BALTIMORE, MARYLAND 21203 CHARLES H. CRUSE
' enacan ca.,uaYE"wes cenam,g November 7,1989 t
U. S. Nuclear Regulatory Commission Washington,- DC 20555 ATTENTION:
Document Control Desk
SUBJECT:
Calvert-Cliffs Nuclear Power Plant Unit Nos. l- & 2; Docket Nos. 50-317 A'50-318 Request. for Additional Information Concerning NRC Bulletin 89-01,
" Failure of Westinnhouse Steam Generator Tube Mechanical Pluns"
REFERENCE:
(a) Letter from Mr. C. H. Cruse (BG&E) to NRC Document Control Desk, dated June 14, 1989, Response to NRC Bulletin 89-01 Gentlemen:
We ' are providing ' additional information to supplement our response to NRC Bulletin 01 (Reference a). The bulletin requested that we discontinue installation of Westinghouse mechanical plugs from heats 3279, 3513, 3962 and 4523. Installation of a
Westinghouse'. mechanical plugs from the suspect heats has been discontinued for both
- Unit I and Unit 2.
j We also have supplemental information concerning our attempts to remove suspect plugs that appeared to be leaking. Three plugs with signs of possible leakage were discovered on the cold leg side of No. 21 Steam Generator. As we reported in Reference l
(a), attempts to remove two of the plugs failed. Combustion Engineering's attempt to remove the third plug' failed when the bottom threaded skirt of the plug shenred off.
L As we stated in Reference (a), any Westinghouse tube plugs. we' are successful removing ll from Calvert Cliffs steam generators will be examined for the presence of primary water L
stress corrosion cracking on a sample basis for each heat.
1 Should you have any further questions regarding this matter, we will be pleased to discuss them with you.
Very truly yours, 1:
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' Doc': melt Co;t of Desk November 7,1989 b
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D. A. Brune, Esquire J. E.
Silberg, Esquire l
R. A. Capra, NI',C S. A.McNeil,NRC i
W. T. Russell, NRC J. E. Beall, NRC _
T. Magette, DNR f
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