ML19341A238
| ML19341A238 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 01/15/1981 |
| From: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8101220420 | |
| Download: ML19341A238 (2) | |
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r T!iE CLEVELAND ELECTRIC ILLUMIN ATING COMPANY P.O. BOX $000 e CLEVELANo OHIO 44101 e TELEPHONE (216) 622-9800 e ILLUMINATING BLDG.
e 55 PUBUCSoVARE Dalwyn R.Davidson VICE PRESIDENT SYSTEM ENGINEERING AND CONSTRUCT 1oN January 15, 1981 Mr. James G. Keppler Director of Region III Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE: Perry Nuclear Power Plant Docket Nos, 50-440; 50-441 Interim Report on Lamination Identified in A36 Gusset Plate Hanger Steel Material
Dear Mr,
Keppler:
This letter serves as an Interim Report as required by 10CFR50,55(e) concerning lamination identified in A36 gusset plate hanger steel material. This was first reported by W. J. Kacer of the Cleveland Electric Illuminating Company to J.
Neisler of your office on December 19, 1980, This report includes a description of the deficiency, the corrective action taken to date, and the planned date for the Final Report, Description of Deficiency Some 5" x 8" x 1/2" plates used for gussets on Class 1 electrical cable tray hangers were found to have linear indications along the edges. An investi-gation showed that these indications were laminations in the steel plate as received from the supplier. The plate was cut from ASTM A36 material. This condition was documented on L. K. Comstock Nonconformance Report EC-179, Corrective Action Taken to Date Prior to the discovery of the laminations, no QC inspections were made on the plates when they were prepped for welding, The steps to prevent recurrence listed on NR EC-179 required a visual inspection to be performed when the plate is weld prepped.
In addition, the Project Organization Nuclear Design Section issued an Engineering Change Notice (ECN 3862-33-545) that added stricter require-ments for hanger support steel. The ECN changed the material from ASTM A36 to ASIM A36-S1 or ASTM A516 grade 70-S8 in an ef fort to reduce the ptabability of receiving laminated material, h0lY
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!!r. J:::: C, F.;ppler January 15, 1981 L. K. Comstock has reviewed their installation records and determined that 498 hangers with gusset plates were installed prior to February, 1980,
- Using the Nuclear Design Section's recommended inspection program, L. K. Corstock will select 33 plates and perform an inspection of each, Completion of the inspection program and evaluation of the results will deter-mine the extent of additional corrective action to be taken in this matter, The planned date for submittal of the Final Report is March 2, 1981, Ve truly yours, 42 h2 sq Dal R. Davidson Vice President System Engineering and Construction ist ec:
J. Hughes U. S. NRC -- Site Mr, Victor Stello, Director Office of Inspection,and Enforcement U. S. Nuclear Regulatory Commission Washington, DC 20555 U. S. Nuclear Regulatory Commission c/o Document Management Branch Washington, DC 20555 l
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