ML19323B233
| ML19323B233 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 03/24/1980 |
| From: | Trimble D ARKANSAS POWER & LIGHT CO. |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| IEB-80-03, IEB-80-3, NUDOCS 8005120111 | |
| Download: ML19323B233 (2) | |
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CENTRAL F1LES 7
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LPOR SC ARKANSAS PCWER & LIGHT CCMPANY SIAIE PCST CFFICE BCX 551 UTTLE PCCX. AAKANSAS 72203 (501)371-4000 March 24, 1980 1-030-11 2-030-10 Mr. K. V. Seyfrit, Director Office of Inspection & Enforcement U. S. iiuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011
Subject:
Arkansas Nuclear One - Units 1 and 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6 IE Bulletin 80-03, Loss of Charcoal From Standard Type II, 2 Inch, Tray Adsorber Cells (File:
1510.1 and 2-1510.1)
Gentlemen:
In response to the subject I&E Bulletin, a visual inspection was con-ducted at ANO of all air exhaust systems containing AACC Standard Number CS-8T type II Car on Adsorber Cells as described in Section 5 of ANSI N510-1975. The f ndings of this inspection were that all cells in use and in storage for future use are of a spot weld construction (no rivets).
The spot welds fastening the perforated screen to the framework are randomly spaced and average approximately one inch between welds.
The perforated screen itself is spot welded around the perimeter and along all interior supports on both top and bottom.
There was no indication of weld breakage and no sagging or warping of the perforated screen.
The following information describes the system, manufacturer, type and condition of charcoal adsorber cells used and planned for use at ANO.
System Manufacturer Tvue Condition Control Room Emergency Vent Barnebey-Cheney Good **
Fuel Handling Area (Unit 1)
NuCon Good Reactor Building Purge NuCon Good (Unit 1)
Penetration Room Ventilation Barnebey-Cheney Good v
(Train A Unit 1)
Penetration Room Ventilation Barnebey-Cheney Good (Train 3 Unit 1)
a f
Auxiliary Building NuCon Good Ventilation i tit 1)
Penetration Room Venti ~ ation Barnebey-Cheney Good (Train A Unit II)
Penetration Pr Ventilation NuCon Good (Train Unit II)
All adsorbers are American Association for Contamination Control, Standard CS-8T type II Flatbed Cells two inches thick.
i Good = spot welds fastening perforated screen to support framework are holding (top and bottom). No evidence of screen sagging or warping away from frame.
r Very truly yours,
!w c
4
/4 David C. Trimble C' Manager, Licensing DCT:DEJ:nak i
cc:
Mr. Bill Johnson Director l
U. S. Nuclear Regulatory Commission Division of Fuel Facility Post Office Box 2090 and Materials Safety Inspection Russellville, Arkansas 72801 Office of Inspection and Enforcement 1
U.S. Nuclear Regulatory l
Commission I
Washington, D.C.
20555 1
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