ML19322B599
| ML19322B599 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 03/04/1976 |
| From: | Parker W DUKE POWER CO. |
| To: | Rusche B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7912040627 | |
| Download: ML19322B599 (2) | |
Text
r DIIKl? POWElf COMPMY l'owen licionmo 422 SouTu Cnunen STHEET, CRAHLoTTE, N. C. usamt WILLI AM O. PAR K ER, Jf4 Tette.eoest: Anta 704 WCt. PptO0tMt 373-4083
$ttase PmODvCY'O*e
' ' ~
$.N.Qh;, h March 4, 1976 f
/?
W h s_$$b '
C Mr. Benard C. Rusche
-19 IO7b - 'S Director of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission
,,s.,og',g#
Washington, D. C.
20555
'2,
% s.* a N
/,
Attention:
Mr. R. A. Purple
_N Re: Oconee Nuc1 car Station Docket Nos. 50-269, 50-270 and 50-289
Dear Sir:
In your letter of February 17, 1976, it was stated that a review of our December 18, 1976 submittal had determined that the proposed method for assuring that sufficient core circulation exists to avoid boron concentration buildup that might adversely affect long-term cooling capability following a postulated LOCA was acceptable.
It was further stated, however, that the reactor operator must be provided positive indication of flow through the affected lines. If such indication could not be provided prior to Oconee 1, Cycle 3 operation, your letter requested that a pre-operational test be conducted to demonstrate sufficient flow through the lines under post-LOCA conditions.
The installation of equipment to provide the requested flow indication cannot be completed prior to Oconee 1, Cycle 3 operation. Accordingly, i ssting of the subject lines to demonstrate flow will be conducted prior to This testing has been further addressed in.my letter
}
resuming operation.
of February 24, 1976. With regard to future installation of fldw indication equipment, Duke is pursuing this matter with the incention of idstalling an i
acceptable system prior to Cycle 4 operation.
It should also be noted that while your letter of February 17, 1976 specifically addressed Oconee 1, the proposed method of assuring por -LOCA 1.erefore, boron dilucion flow is essentially the same for all Oconee units.
the Staf f's concerns with regard to positive flow indication are generic to the Oconee units. In this regard, the installation of flow indication equipment cannot be completed for Oconee 2 prior to Cycle 2 operation (refer 23'78
~
1912040[>A7 /
Mr. Benard C. Rusche Page 2 March 4, 1976 to my letter of February 25, 1976 thereon).
The above information concerning flow testing of the affected lines and future installation of flow indication equipment is, therefore, currently applicable to Oconee 2 also. Oconee 3 cannot be definitively addressed at this time.
V y truly yours 44.
William O. Parker, J.
DCll:mmb