ML19326B506

ForwardsBulletin 73-02 Malfunction of Containment Purge Supply Valve Switch. Action Required

ML19326B506
Person / Time
Site:	Arkansas Nuclear
Issue date:	07/13/1973
From:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:	ARKANSAS POWER & LIGHT CO.
References
NUDOCS 8004150842
Download: ML19326B506 (3)

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Di.lT 5 1973 Documents for Public Document Room:

~ Arkansas Power and Light Company Docket No. 50-368 Arkansas Nuclear One - Unit 2 REGULATORY OPERATIONS BULLETIN 73-2 3

1.

Letter to Arkansas Power and Light Company dated July 13, 1973 2.

Letter from Arkansas Power and Light Company, J. D. Phillips, dated September 20, 1973 i

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ENCESURE A 8004150Fl[2

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s Dirc:torate of Ragulst,ory July 13, 1973 Operations Eulletin 73-2 6.

Florida Pcuer Corporation 50-302 (Crystal River 3)

Atta:

Mr. J. T. Rodgers Assistant Vice President -

Generation Engineering 3201.34th Street, South P. O. Box 14042 St. Petersburg, Florida 33733 7.

Florida Power and Light Co pany 50-250 (Turkey Point 3)

Atta:

Dr. J. Coughtin 50-251 (Turkey Point 4)

Vice President 50-335 (St. Lucie No. 1)

P. O. Box 3100 Mia=1, Florida 8.

South Carolina Elcetric and Gas Cc=pany 50-395 (Sun =ar 1)

Attn: Ifr. E. H. Crews, Jr., Vice President f~

Engineering Services - Construc,tien and Engineering P. O. Box 764 a

Colu=bia, South Carolina 29202 9.

Tennessco Valley Authority 50-327 (Sequoyah 1)

Attn: Mr. J. E. Watson 50-328 (Cequoyah 2)

Manager of Power 50-390 (2 tts Ear 1)

!l 813 Pcuar Building 50-391 (Uct:s Bar 2)

Chattanooga, Tennessee 37401 1

10. Virginia Electric cnd Power Conpany 50-2SO (Surry 1)

Attn:

Mr. Stanley Ragone 50-231 (Surry 2)

Vice President 50-333 (North anna 1) l Pcat Office Eon 1194 50-339 (rcrth Anna 2)

Rien= cud, Virginia 23209

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Avtaur4,cEenc44 ac:ci In Reply Refer To:

July 13, 1973 s

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!l The attached Directorate of Regulatory Operaticas Eulletin W. 73-2,

" Malfunction of Centain=ent Purge Supply Valve Switch," is sent to 7

you to provide you with infor:stica vc received frc= the Uiscensin Electric Pcvar Cenpany cencerning the Point Ecach 2 prc:curized vater reactor facility. This infor=stien =sy relate to the desi:;n i

and perfor:ance of certain equi;=ent at your facility. Actica t

4 requested cn your part is identified in Section B of tha bulletin.

t Very truly yours, j

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DUPLICATE DOCUMENT Entire document previously enteredintosysteg8 der:

30D 960 '

xNo July 13, 1973 j

Eirc torate of 2cgulatory Operations No. of pages-Bulletin 73-2 I

M.U,7UtiCTIOI 0F CO:;TAII;'C:T PURGE SUPPLY VALVE SWITCH We recently received infor=ation frc= the Wisconsin Electric Power Cc pany concerning a proble found during functional testing fc11 cuing i

caintenance at the Point Beach 2 Pressurized water reactor which cav.

relate to the design and operation of the control circuit for centain-i cent purge valves at your facility. Pertinent details relating to this pr:ble cre contained in Section A belev. Action reg:cceed by thi:

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D Bullatin is contained in Sectica B.

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Deceriotion of Circunstancei A

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I Curing the perfor:2nce of functional testing of one cf the Unit 2 c:ntainment purge valves folleving =ainten nce, tha valve cpaned when th2 cenual control switch was coved to the open pcsitica but failed to cicsc when the switch was placed in the cle::d p::ition.

In the Pcint Beach facility design, the redundant pncu:: tic operated, air to open centainment purge supply valves cra ::nually centrolled by a single switch. For testing purpcscs during facility operatien, in:tre=ent air 10 secured to one valva that r::cins closed t: :intain f

contain::nt integrity while the other valve is being t:stad.

j Sub: quent inv:stig:ti n by the licenses rc.va:1:d th:t a :::11 scr:r we.ich :: ur:s the cent:ct elecin; :: to the :::::1 pcrti:n of the suitch had 1::::n22.

~hi' ;.:=itted th2 := :: s t :- in th: ' Cent :.:

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