ML17238A703

Quad-Cities Units 1 and 2 - Transmittal of Special Report No. 19/Quad Cities Special Report No. 6, Entitled Feedwater Control System Modifications

ML17238A703
Person / Time
Site:	Dresden, Quad Cities
Issue date:	01/24/1973
From:	Butterfield L Commonwealth Edison Co
To:	Giambusso A US Atomic Energy Commission (AEC)
References
Download: ML17238A703 (1)

Text

Commonwealth Edison Company ONE FIRST NATIONAL PLAZA.* CHICAGO. ILLINOIS Arfcfress Reply fo, .

POST OFFICE BOX 767 *CHICAGO, ILLINOIS 60690

~egu)a,:tory January 24, 1973

/

/

Mr. Arigelo Giambusso Deputy Director for Reactor Projects

• Directorate of Licensing U.S. Atomic Energy Commission Washington, D.C. 20545 \V~.

. /O),......_-f""'\

Subject:

Dresden Special Report No. 19/Quad-~~o::::;;~

Special Report No. 6, Dkt Nos 50~237, 265

Dear Mr. Giambusso:

Attached is Dresden Station Special Report No. 19/

Quad-Cities Special Report No. 6, entitled "Feedwater Control System Mod1fications" ~-.*

This report is in response to your letter of August 21, 1972, requesting information on the programs underway to investigate the performance of the feedwater control. systems and safety*valve;s f°or Dresden Units 2 and 3. The program-for*

the safety valves was submitted as Dresden Station Special Report No. 18 on November 14, 1972.

As the attached report discusses, modifications have been'made to the feedwater control systems on Dresden Unit i and Quad-Cities Unit 2. Results of several subsequent shutdowns on Dresden Unit 2 are included which show.that an improvement in operation of the feedwater control system has been achieved.

The same feedwater control system.modifications are also scheduled for Dresden Unit 3 and Quad-Cities Unit 1 during 1973.

One signed original and 59 copies of this report are provided for your use.

Very truly yours,

~/(\X\****'x:-\*...-~ ~\

638

---ot1D~~

L. D. Butterfield, Jr.

Nuclear Licensing Administrate~