ML19351F660
| ML19351F660 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun, Calvert Cliffs  |
| Issue date: | 11/24/1980 |
| From: | Novak T Office of Nuclear Reactor Regulation |
| To: | Noonan V Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8101130694 | |
| Download: ML19351F660 (1) | |
Text
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November 24, 1980 P
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e MEMORANDUM FOR:
1" *.ent S. Noonan, Assistant Director M
G Tor Materials and Qualifications Engineering vivision of Engineering FROM:
Thomas M. Novak, Assistant Director for Operating Reactors Division of Licensing
SUBJECT:
INSERVICE INSPECTION OF FLANGED SURFACES SECURING STUDS My September 26, 1980 memo to you on the above subject stated that although the RCP stud corrosion problem at Fort Calhoun appeared to be unique, the inspection methods being employed to check similarly installed studs and bolts should be reevaluated.
Since that time, visual inspection of the RCP studs at the Calvert Cliffs facility have disclosed a similar corrosion problem.
I have attached a copy of the November 13, 1980 report from BG&E for your information. The extent of the degradation of the Calvert Cliffs Unit 1 RCP studs is considerably less than that at Fort Calhoun, but it points out, again, the need for supplemental, visual inspections.
' We feel that the corrosion problem goes beyond Byron Jackson RCP studs and would propose that guidance be developed and transmitted to all licensees governing the inspection of all similar installations. Your cooperation ist providing this guidance is requested.
-)- M Thomas M. Novak, Assistant Director for Operating Reactors Division of Licensing
Attachment:
As stated cc w/ attachment:
D. Eisenhut G. Lainas R. Tedesco
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