ML20079M016
| ML20079M016 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 01/09/1984 |
| From: | Manno S NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 7922, NUDOCS 8401270108 | |
| Download: ML20079M016 (2) | |
Text
_ _ _ _
.hl M V NIAGARA R UMOHAWK NIAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST, SYRACUSE, N.Y.13202/ TELEPHONE (315) 4741511 SAMUEL F. MANNO VICE PRESIDENT GdUCLEAR CONSTRUCTION January 9, 1984 (7922)
Mr. R. W. Starostecki, Director U.S. Nuclear Regulatory Commission Region I Division of Project and Resident Programs 631 Park Avenue King of Prussia, PA 19406 Re: Nine Mile Point Unit 2 Docket No. 50-410
Dear Mr. Starostecki:
Enclosed is an interim report in accordance with 10CFR50.55(e) for the problem concerning the reactor building roof design.
This problem was reported via telecon to Mr. L. Norrholm of your staff on December 9,1983.
Very truly yours, 1
S. F. Mar n SFM/TL:Ja Enclosure xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. R. Graurn, Resident Inspector l
l O!oO$$[g PDR f
y k&Ill
.s NI AGARA M0HMK POWER CORPORATION NINE MILE POINT - UNIT 2 DOCKET N0. 50-410 Interim Report for the Problem Concerning Reactor Building Roof Design Description of the Problem The reactor building roof deck was designed, fabricated and erected as a Quality Assurance Category III structure.
The reactor building should be maintained at a negative pressure with respect to the outside atmosphere during normal operation and also in the event of an accident.
In the event of an acci' dent and/or seismic event, the integrity of a Quality Assurance Category III structure cannot be assumed.
The matter is still under investigation, and a final report will be submitted by April 30, 1984.
________________________________________________A