ML19317E958
| ML19317E958 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 01/03/1973 |
| From: | Peltier I US ATOMIC ENERGY COMMISSION (AEC) |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001070753 | |
| Download: ML19317E958 (1) | |
Text
.
cc:
IAPeltier RCDaYoung ASchwencer CLong RWKlecker M 3 1973 Docket Nos.
9/270/287 Note to File TELECON WITH DUKE POWER COMPANY CONCERNING STEAM-L FOR OCONEE 1/2/3 - DECEMBER 29, 1972 A conference call was held in order that Duke could give us its preliminary assessment of the steam-line-feed-water break issue for Oconee Units 1, 2 and 3.
Miller, Blackley, S'.apler, Foley and Hart of Duke participate the phone call.
1.
Duke finds it difficult to accept the credibility of a steam-line 8
break since stresses in the steam line are aboue.1/20th of code allowable values.
point of view it would be wiser to alter the penetration roomHo of a postulated rupture in the penetration room. enclosure The modification would probably consist of an isolation wall on the inside and a blowout wall on the outside of the steam line area.It will be a couple of weeks before Duke can determine for sure if the modifications are feasible.
2.
Feedwater-line modifications are not so easy.
However, the feedwater-lines are low stress lines also.
Duke is going to analyze the steam-line break over the next two weeks to a month and tak steps to assure that if such a break were to occur the plant will maintain all the systems required for safe shutdown (assuming also a worst single failure) and control room instruments and controls to safely control the reactor.
3.
Duke maintains that the auxiliary service water system is all that is required to cool the system in the event that all main feedw t is lost.
Duke also doubts that a feedwater-line rupture will a er jeopardize the control room.
4.
Duke will deliver its preliminary report on this matter to DOL by noon January 2, 1973.
h.
I. A. Peltier Project Manager PWR-4 i
i ld 80010707b
-