ML20080K362
| ML20080K362 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley, Perry, 05000000 |
| Issue date: | 02/10/1984 |
| From: | Hiatt S, Hiatts S OHIO CITIZENS FOR RESPONSIBLE ENERGY |
| To: | Stefano J Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20080K364 | List: |
| References | |
| NUDOCS 8402150389 | |
| Download: ML20080K362 (1) | |
Text
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,a February 10, 1984 John J. Stefano, Project Manager Perry Nuclear Power Plant, Docket Nos. 50-440/441 Division of Licensing U.S. Nuclear Regulatory Cm mission Washington, D.C.
20555
Dear John:
As a petitioner to the Beaver Valley Power Station Unit 2 OL proceeding, OCRB has received the enclosed co*resnondence concerning that facility's use of heavy-wall pipe fittings (tees and elbows).
'Ibese fittings have about twice the nminal wall thickness; however, nminal values were assumed by piping designers in their analyses.
'1he enclosed report indicates that the effects of the heavy fittings in some types of load responses nuy be significant.
A survey of five fitting vendors indicated that heavy pipe elbows have beame prevalent in recent years and are "likely to exist at most nuclear facilities tods.y."
(p. 6) 'Ihis, plus their use at two other plants in Region I, suggests that this might be a generic concern.
I would like to know if the Perry plant uses these heavy pipe fittings, and, if so, what effect such use has on nMm Msim mnlyses for various (seismic, thernal) loads.
I am also interested in what the staff has done concerning the use of " stiff" pipe clanps at the Perry facility. See Board Notifica-tion DN-83-105A. It would appear that these deviatlons frcm the assumed, analyzed design warrant an as-built design review to consider their cumulative effect on plant piping systems.
Sincerely, p~h Y Susan L. Hiatt Ohio Citizens for l
Responsible Energy 8275 Munson RL Mentor, OH 44060 (216) 255-3158 cc w/'3ncl: Jarres Keppler, R III 1
B402150389 840210 PDR ADOCK 05000412 A
PDR lOSd 00 jolb W
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