ML20095B618
| ML20095B618 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 08/09/1984 |
| From: | Jens W DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 66, EF2-69285, NUDOCS 8408220175 | |
| Download: ML20095B618 (2) | |
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-7,*f%";'7d" August 9, 1984 EF2-69285 M'r. James G.- Keppler Regional Administrator
-Region'III.
U.
S. Nuclear Regulatory Commission 1799 Roosevelt Road
_ Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
l
Reference:
- 1) Fermi 2 NRC Docket No. 50-341
- 2) Letter, D.-A. Wells to J. G. Keppler, April 3 0, 1982, EF2-58 066
- 3) Letter, D.
A. Wells to J.
G.
- Keppler, August 27, 1982, EF2-59392
Subject:
Final Report of 10CFR50.55(e) Item 66
" Core Spray Pump Motor Damage" This is Detroit Edison's final report concerning Item 66,
" Core Spray Pump Motor Damage".
This item was originally reported as a potential 10CFR50.55(e) deficiency in April, 1982. ' Additional information was provided in Re#erences (2) and (3).
Description of Deficiency A' gouge on the core spray pump motor (E21-01-C 001) shaft was identified while the motor was being prepared for installa-tion.
Ma investigation concluded the damage was caused by handling ~ equipment (fork lift)~.
Because of the potential for internal damage, Detroit Edison shipped the motor to a General. Electric. repair shop for evaluation and repair.
This inspection revealed that.the shaft was bent approximately.011 inches and that there was damage to both the thrust and guide bearings.
8408220175 840809 PDR ADOCK 05000341 S
PDR AUG 13
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'Mr. James G.
Keppler August 9,1984 EF2-69285 Page 2 Analysis of Safety Implications If left uncorrected, this deficiency could have resulted in' the failure of one of the four (4) core spray pumps.
The core spray system, composed of two independent trains, is part of the emergency core cooling system.
Corrective Action All damaged parts in the core spray pump motor were replaced and the motor was inspected and tested by the vendor, General Electric Company.
The repair documentation was
, accepted in,accordance with Detroit Edison's Quality
' Assurance Program and the motor was returned to site and installed.
Detroit Edison's quality assurance program provides measures for the protection of equipment during handling and storage,
'and appropriate inspections ensure the quality of equipment to be installed.
This is Detroit Edison's final report on this item.
If you have questions concerning this matter, please contact Mr. Lewis P.
Bregni at (313) 586-5083.
. Sincerely, cc:
Mr.
P.
M. Byron Mr.
R. C. DeYoung Mr.
R. C. Knop