ML19330A794
| ML19330A794 | |
| Person / Time | |
|---|---|
| Site: | Washington Public Power Supply System |
| Issue date: | 03/19/1980 |
| From: | Renberger D WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ELE-FJ-80-016, GO3-80-547, IEB-80-03, IEB-80-3, NUDOCS 8007290444 | |
| Download: ML19330A794 (2) | |
Text
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P W shington Public Power Supply System MAR 241980
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A JOINT OPERAllNG AGENCY S
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P.O.E04 988 3000 Gao. WasMtNGfoN W A Y RecMLa N o. W AsMING TON 99352 PHONE (509) 375 5000 March 19,1980 G03-80-547 ELE-FJ-80-016 Dockets Nos.
50-460 and 50-513 Mr. R. H. Engelken, Director U.S. Nuclear Regulatory Commission Suite 202, Walnut Creek Plaza 1990 N. California Boulevard Walnut Creek, CA 94596
Subject:
UPPSS NUCLEAR PROJECTS NOS. 3 & 5 IE BULLETIN 80-03, " LOSS OF CHARC0AL FROM STANDARD TYPE II, 2 INCH, TRAY ADSORBER CELLS" Dear Mr. Engelker The following is our response to the subject IE Bulletin as it applies to UNP-1/4:
The charcoal adsorber cells designed for the ventilation systems at WNP-1/4 are being supplied by Mine Safety Appliances Company. Standardized 31 " long x 23" wide, flat bed, TYPE II units designated as MSA Part No. 462714 are used in all the atmospheric cleanup systems.
The charcoal adsorber cells received to date are being stored inside an enclosure at the WNP-1 equipment storage area. HNP-1/4 maintenance personnel selected six representative cells for inspection. The selection was based on sampling the storage configuration since all of the adsorber cells are of the same type. A Maintenance Work Request was originated to have our Quality Assurance organization rerform the actual inspection.
The inspection was performed to determine the spacing of the welds securing the screen to the casing and to 8007290 N Q
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4 Mr.. R.H. Engelken Page 2 inspect this ov'erall joint for separation, degradation, or sagging of the screen which could lead to loss of the charcoal.
The inspection revealed that the screens ar-e welded (1/8" diameter tack welds) to the casing at 6/8" centers, and there is no separation, degradation, or sagging of the screen which cculd allow the charcoal to escape.
Should you have any questions or desire more information, please advise.
Very truly yours, D. L. RENBERGER ASSISTANT DIRECTOR TECHNOLOGY DLR: FJ:crw cc:
Director, Division of Fuel Facility & Materials Safety Inspection Office of Inspection &
Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
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