ML17037B963
| ML17037B963 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 05/09/1975 |
| From: | Rhode G Niagara Mohawk Power Corp |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| Download: ML17037B963 (4) | |
Text
CONTROL NO: ~
FILE' NRC DISTRIBUTIOiN FOR PART."0 DOCKET MATERIAL (TEMFORARY FORM)
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FROM.Niagara Mohawk Power Corp
- Syracuse, N,Y.
Gerald K. Rhode 5-9-75 5-12-75 DATE Of-DOC DATE REC'D LTB XX TWX RPT OTHER TO:
John F.
S tolz ORIG 1 Signed CC OTHER SENT AEC PDR xxxxx SENT I OCAL PDR CLASS UNCLASS XXX PROP liVf-0 INPUT
. DESCB IPTION:
Ltr, ref.'our ltr, of 4-18-75 6 4-21-75,o,.,
Regarding containment hydrodynamic loads 8 Rel valve blowdown phenomena.
~.,Xnvesstigation has revealed the containment.
can currently handle certain aspects of phenomena, or be modified t preserve containment integxity.. ~.
Will Submit a definite work Sch, by 6-23-75 '
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PLANiT NAME.
Nine Mile'Point 8
2 NO CYS REC'D ENCLOSURES:
DOCKET NO:
QX qpG 50-410
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NIAGARA MOHAWK POWER CORPORATION NIAGARA~
MOHAWK 300 ERIE BOULEVARDWEST SYRACUSE, N, Y. I3202 May 9, 1975 j t~b"I~l~~
Mr. John F. Stolz, Chief Light Water Reactors Branch 2-1 Division of Reactor Licensing United States Nuclear Regulatory Commission Washington, D.C.
20555 Re:
Nine Mile Point Nuclear Station Uni't 2 Docket No. 50-410
Dear Mr. Stolz:
Your letters of April 18, 1975 and April 21, 1975 requested infor-mation regarding containment hydrodynamic loads and relief valve blowdown phenomena. ) The loading conditions for both og these phenomena are inter-related in that both could potentially affect the structural design of the suppression chamber and internal components.
The initial containment design basis did not specifically identify these transient effects. (A preliminary investigation has revealed that the containment can currently~handle certain aspects of the phenomena, or can be modified to assure that containment integrity is preserved.
An appropriate program and schedule is being developed in conjunction with General Electric Company and other utilities owning Mark II containments.
Because of the scope of this effort, the schedule suggested in your letters apparently cannot be accommodated.
A definitive work schedule is currently in preparation and will be submitted by June 23, 1975.
Very truly yours, NIAGARA MOHAWK POWER CORPORATION Gerald K. Rhode Vice President Engineering
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