ML19309F767
| ML19309F767 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 03/25/1980 |
| From: | Dolan J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-80-03, IEB-80-3, NUDOCS 8004300611 | |
| Download: ML19309F767 (3) | |
Text
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lNDIANA & MICHIGAN ELECTRIC COMPANY l
P. o. So X 18 BOWLING CREEN sT ATioH NEW YORK, H. Y.10004 March 25, 1980 AEP:NRC:00366 Donald C. Cook Nuclear Plant Unit Nos. I and 2 Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-74 IE BULLETIN 80-03; LOSS OF CHARC0AL FROM ADSORBER CELLS Mr. James G. Keppler, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Comission Region III Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
This letter responds to your letter of February 6,1980 transmitting to us the subject Bulletin. We received your letter on February 13, 1980.
The attachment to this letter contains the written report required by Paragraph 4 of this Bulletin.
Very truly yours, E.
John E. Dolan JED/emc Vice President cc:
R. C. Callen G. Charnoff 1
R. S. Hunter R. W. Jurgensen D. V. Shaller - Bridgman J. H. Sniezek - Office of Inspection and Enforcement, Washington U 3f Ibb0
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j
j ATTACHMENT TO AEP:NRC:00366
k,-
AEP:NRC:00366 The Engineered Safety Feature (ESF) System employed at the Donald C.
Cook Nuclear Plant uses charcoal adsorber cells manufactured by the American Air Filter Company. This particular design utilizes spot welds that are located from h to 2 inches apart around the entire periphery of the perforated screen to secure it to the cell casing. Thus, the tivet spacing problem discovered at the Sequoyah Nuclear Plant does not apply at our facility.
In accordance with IE Bulletin 80-03, a complete visual inspection of all (installed and spare) accessible cells was performed. Cells located in the Containment Filter Train (CFT) units were not inspected due to high radiation levels. These cells will be inspected during scheduled outages at a later date.
The procedure used to determine cell condition is that described in Section 5 of ANSI N510-1975, and consisted of a visual inspection of adsorbers for the following:
a.
Individual Clamping b.
Condition of Clamping Devices c.
Condition of Gaskets d.
Damage to cells including burns from welding or cutting operations in housing The inspection revealed no evidence of defective cells or any casing-screen separations.
....