ML20084D438
| ML20084D438 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 03/29/1974 |
| From: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| To: | Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084D330 | List: |
| References | |
| NUDOCS 8304110215 | |
| Download: ML20084D438 (2) | |
Text
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FLORIDA POWER 8. UGHT COMPANY i
l March 29, 1974 1
1 Mr. Angelo Giambusso Deputy Director for Reactor Projects Directorate of Licensing Office of Regulation U. S. Atomic Energy Commission Washington, D. C.
20545
Dear Mr. Giambusso:
TURKEY POINT UNIT NO. 3 4
DOCKET NUMBER 50-250 REINSPECTION OF ACCESSIBLE SAFETY RELATED HYDRAULIC PIPE RESTRAINTS Reinspection of the safety related restraints that are accessible during power operation was completed on March 18, 1974.
The in-i spection revealed that all of the restraints were operable.
How-ever, one restraint, located on the main steam piping, exhibited a slight problem with its linkage.
Relative movement of approx-imately 1/16 inch was noted at the threaded joint between the main piston rod and the restraint linkage that mounts to the process piping.
Disassembly and examination of the joint showed that the threads of each of the mating pieces were in satisfactory condition, and the relative motion was just caused by a loose fit between the two threaded pieces.
The threaded portion of the restraint linkage was replaced to eliminate the slight relative motion at the joint.
This inspection included a total of twenty restraints rather than the previous total of fourteen restraints.
The increase resulted from a recent review of the classification of the restraints in-l stalled at Turkey Point.
As a result of the review, six additional restraints installed on the main steam piping were classified as safety related.
The basis for the " safety related" c&assification is that these restraints are involved in the protection of safety related equip-ment from the effects of pipe whip associated with a main steam line break.
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The temperature and radiation environment of these additional re-straints is the same as that previously reported for restraints in the vicinity of the auxiliary Feedwater Pumps.
The temper-is that of the outside ambient air and the radiation field ature is less than 1 mR/hr.
S Very truly yours, 1
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R7 E. Uhrig Director of Nuc1 car Affiars REU/HNP/kmw cc:
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