ML19322C016
| ML19322C016 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 03/19/1970 |
| From: | Schwencer A US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Howe P US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7912200734 | |
| Download: ML19322C016 (1) | |
Text
___
Distribution:
Dockets (3)
PWR-2 Reading March 19, 1970 ASchwencer CGLong P. W. Howe, Chief, Site, Environmental and Eadiation Safety Gros Division of Reactor Licensing THR1J: Charles G. Long, Chief, PWR Project Branch 2 N
Division of Reactor Licensing EMEPGENCY CONDENSER COOLING AND POWER AVAILABILITY FOR CCONEE DOSE CALCUIATIONS (DOCKETS 50-269, 50-270, AND 50-287)
Duke will use redundant, high reliability hydroelectric generators as the principle source of onsite emergency power (these generators will automatically accept load within 23 seconds) except for brief periods of about 1 day / year when Duke may unwater the pennstock to the hydro station for inspection or maintenance. During this short interval (about 0.28 percent of the time) they will rely on 1 of 3 existing gas turbine-generators supplying power over a separable 100 Kv transmission line f rom the Lee Steam Station 30 s.iles away. Approximately 15 minutes are required to start one of these gas turbine units and connect it to the Oconee emergency load.
In addition to the above, there is a multiplicity of separate connec-tions to the applicant's 230 Kv transmission network.
Therefore you are requested to evaluate radiological consequences of accidents assuming no loss of ac power except for a brief startup interval of 15 minutes or less.
You should also assume, as Duke has done, that. tu Oconee Station retains its ability to condense secondary system steam under all condi-tions. This is possible because cooling of the condenser hotwell will be accomplished even with no ac power by means of a siphon effect line which runs from Lake Keovee through the condenser and discharges to the hydro plant tailrace.
, ' 5/
Albert Schwencer, Senior Project Leader PWR Project Branch 2 Division of t<eactor Licensing i
ec:
P. A. Morris O. D. Parr 7_ r
- 9..- -
e i v-.
R3,,,D,, Pollard "W2 /RRL Sticrg Thomasson
.HR.2LD{EL (W
A4 hwen. ggt;5.t..CCho,n,g '
sunnaut >
part >
. I. 7....! N......[I.[I Form AEC-31e (Rev. 9-Sh AECM 0240 e s, sovamenem esienne omca, esse e-a, iv l
,?912200,59
.