ML20140F783

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Submits Addl Info Re 840713 Commitment to Modify safety-related Block Walls to Provide Protection from Tornado & Missile Effects,Per IE Bulletin 80-11.Damaging Effects of Seismic Motion Will Also Be Considered
ML20140F783
Person / Time
Site: Ginna Constellation icon.png
Issue date: 03/25/1986
From: Kober R
ROCHESTER GAS & ELECTRIC CORP.
To: Lear G
Office of Nuclear Reactor Regulation
References
IEB-80-11, NUDOCS 8604010159
Download: ML20140F783 (1)


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.,?*M ROCHESTER GAS AND ELECTRIC CORPORATION e 89 EAST AVENUE, ROCHESTER, N.Y. 14649-0001 ' f ROGER W. KOBER WE MEbOENT T 8 4 8 P**N E tt.rcimc si STEAM MODUCTaON aos 4 C ner ne 546-2700 March 25, 1986 Director of Nuclear Reactor Regulation Attention: Mr. George E. Lear, Chief PWR Project Directorate No. 1 U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Structural Upgrade Program and IE Bulletin 80-11 R. E. Ginna Nuclear Power Plant Docket No. 50-244

Dear Mr. Lear:

In RG&E's letter of July 13, 1984 regarding the Structural Upgrade Program, RG&E committed to make modifications to certain safety-related block walls to provide protection from tornado and missile effects. The means of protection are discussed in Sections G.3 and G.4 of the report a ttached to tha t letter.

When designing and implementing these modifications, RG&E will also take into account the possible damaging effects of seismic motion on these block walls. The final resolution of these block wall modification issues will thus complete any seismic concerns relative to IE Bulletin 80-11.

The schedule for these modifications, as noted at the end of the July 13, 1984 letter, remains unchanged: all modifications are expected to be completed by late 1988 to mid-1989.

V truly yours, 4f Y o Y Roger W. Kober g///

io 8604010159 860325 PDR ADOCK 05000244 O PDR