ML17238A683

Supplement to Report of Unit 3 Main Steam Isolation Valve Leakage Test

ML17238A683
Person / Time
Site:	Dresden
Issue date:	03/29/1974
From:	Abel J Commonwealth Edison Co
To:	Giambusso A US Atomic Energy Commission (AEC)
References
Download: ML17238A683 (2)

Text

Commonw~ E4iscm_.. FHe Cy.

One First Nati;;,Wiaza, Chicago, Illinois Address Reply to: Post Office Box 767 Chicago, Illinois 60690 March 29, 1974 Mr. Angelo Giambusso Deputy Director for Reactor Projects Directorate of Licensing Off ice of Regulation U .:s. Atomic Energy Commission Washington, D.C. 20545

Subject:

Supplement to Report of Dresden Unit 3 Main Steam Isolation Valve Leakage Test -

AEC Dkt 50-249

Dear Mr. Giambusso:

A report of the Dresden Unit*3 Main Steam Isolation Valve Leakage testing was submitted .to you by letter dated August 20, 1973. The attached supplement provides additional information concerning the leakage rate "as found" during, the firs_t refueling outage in Spring, 1973.

One signed original and 39 copies of this report are included. for your use.

Very truly yours,

• ~

Nuclear Licensing Administrator Boiling Water Reactors Att.

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• • • • • . /~~* l*

. .. ,....;... ~;.*c SIDil1ARY REPORT OF DRESDEN 3 MAIN STEAM ISOIATION VALVE LEAKAGE

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. Pursuant to th~ *~equirements of section6.6.E.3.d of the

• Technical Specifications, this report summarizes the results of the main steam isolation valve (MSIV) .leakage tests performed on Dresden 3.

The only leak tests done on the nresderi 3 MSIV 1 s to date were the pre-operational tests and the first refueling outage leak tests.

Included are th~: as found and after repair data for those valves that .

were repaired *.

• Leaka*ge (SCFH) **

• MSIV Number Pr.e~op,Test . . 1st Refueling Outag~

• As Found . After Repair

• • .J-203-lA <**i . *~.' . 1. 02 . :

. 3-203-.lB 1.

3-203-iC r ----.

3-203-lD l.*,,*. *. 6.45 3-20J-2A. i' 1.20 J-203-2B .. 1 ..*.. 29.22 4*.85*

J-20J-2C . 4 . 49.00 1.62**-

. 3-20J-2D 2*' 0.00 The nia.;~um all~wable. le.akage' 'froin one valve is 11.5 SCFH.

All valves are *.well. within limits after repair.

• . *PaEP~ BY* **of! f)~ *.* .*

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t:. .* 21/~

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. APPROVED BY ....7

. .*. Represents leakage through bo:th 1B and 2B

i:'* Represents leakage* through both. le. and 2C LJD:ls

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