ML19344D786
| ML19344D786 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 03/19/1980 |
| From: | Woolever E DUQUESNE LIGHT CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-03, IEB-80-3, NUDOCS 8004280188 | |
| Download: ML19344D786 (1) | |
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'Af (412) 456-6000 435 Semm Avenue Pittsburgh, Pa.
's2" March 19, 1980 United States Nuclear Regulatory Cmmistion Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 ATTENTION:
MR. BOYCE H. GRIER, DIRECTOR
SUBJECT:
Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 I.E. Bulletin No. 80-03 Loss of Charcoal frm Standard Type II, 2 inch, Tray Adsorber Cells Gentlemen:
We have reviewed I.E. Bulletin No. 80-03 which was submitted with your letter dated February 6,1980 and identifies a problem where on certain adsorber cells the spacing between rivets securing the perforated screen to the casing was too great to ensure adequate contact between the casing and the screen, thus allowing charcoal to escape. The particular adsorber cells were Flanders Type II pre-1974 fabrication.
We do not have Flanders Type II tray adsorber cells in charcoal filter assemblies. Tray type adsorber cells have been purchased from Mine Safety Appliance Company (Purchase Order 2BV-178), and American Air Filter Company (Purchase Order No. 2BV-157).
These charcoal adsorber cells consist of a welded / bolted construction to insure adequate contact between the casing and the perforated screens as opposed to the riveted design.
A visual inspection of the cells, when received at the site, shall be perfonned in accordance with Section 5 of ANSI N510-1975, as stated in the specification.
DUQUESNE LIGHT COMPANY By:
(8. J. Woolever 5/ ice President cc:
Dr. V. Stello (15)
Mr. W. G. Mcdonald (1)
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