ML19261D545

Forwards Info Re PWR Feedwater Lines,In Response to NRC 790525 Request.Four Oversized Drawings Encl.W/O Encl

ML19261D545
Person / Time
Site:	Farley
Issue date:	06/15/1979
From:	Clayton F ALABAMA POWER CO.
To:	Stello V Office of Nuclear Reactor Regulation
References
NUDOCS 7906190464
Download: ML19261D545 (140)

Text

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v kabama Power Company 600 Norm 18tr street Pes:Of$ce Box 2641 B rming am. Aracama 35291 Te.conone 205 323-5341 m

F. L CLAYTON, JR Senior Vice Presiden:

Alabama Power t Sounem e xtrc system June 15, 1979 Docket No. 50-348 & 50-364 Information on PWR Feedwater Lines Mr. Victor Stello, Jr., Director Division of Operating Reactor Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Mr. Stello:

Enclosed is Alabama Power Company's response to the information request on PWR feedwater lines dated May 25, 1979. This response is for Plant Farley - Units 1 and 2.

Design Item 1: Provide as-built piping on isometric drawings of the feedwater line to steam generator sparger wi+.hin containment. Show details of the design such as dimensions, pipe schedule, support

, type and locations, pipe restraints, and valves.

t Enclosed are as-built isometrics 186 and 187 with hanger loca-tions for Plant Farley-Unit 1 and isometrics 2-9 and 2-10 with hanger locations for Unit 2. Also enclosed is Rev. 5 to the piping class sheet which describes the type of material used to fabricate the pipe.

Design Item 2: Provide the results of any stress or fatigue analyses which were performed for this system.

Also enclosed are isometrics of Units 1 and 2 with corresponding tables of values for stress points.

Fabrication History: Supply a list of the materials for the steam generator (Item 1) sparger, steam generator feedwater nozzles and feedwater piping within containment.

Feedwater piping inside containment is schedule 100, SA-106, Grade B. The feedwater ring and thermal sleeve are also made of this material. The feedwater nozzle is made of SA-508, Class 2.

2309 191 Fabrication History: Provide the details of the welding processes used to make (Item 2) the nozzle-to-pipe, pipe-to-sparger, and piping welds.

Include details of welding such as pre-heat, joint configu-ration (include with or without backing ring), and post-weld treatment, if any.

7906190464

Mr. Victor Stello, Jr.

PAGE TWO June 15, 1979 The details requested above are answered in the attach-ments on welding procedures.

Based on a telephone conversation with the Region II, I&E Office on 6-8-79, Alabama Power Company decided to perform a radiographic analysis of the welds in question. The welds on all three (3) steam generators between the reducer and nozzle and the reducer and pipe were radiographed. The radiographing showed no flaws in the welds.

Yours very uly, d6h F. L. Clayton, Jr.

FLCJr/ KAP:bhj cc: Mr. R. A. Thomas Mr. G. F. Trowbridge 2309 192

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