ML19326B925

Discusses Active Valve Functioning in Normal & Accident or Seismic Environ.Requests Amend to Application for OL, Providing in Situ Valve Testing Program,Demonstrating Valve Operability During Preoperational Testing

ML19326B925
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/27/1972
From:	Deyoung R US ATOMIC ENERGY COMMISSION (AEC)
To:	Phillips J ARKANSAS POWER & LIGHT CO.
References
NUDOCS 8004180643
Download: ML19326B925 (2)

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Decket No. 50-313 Mr. J. D. Phillipe Vise President & Chiad' Engineer Arkanssa Peuer & Light Company Sixth and Fine Streets 1

Pine Rimff. At===== 71601 h

Deer Mr. Phillipe In almeet every amelysis of a anclear power plant accident, safe recovery from the accidaat er e== tai===t of radioactive materials dependa en the proper functiam of estive valves. In many cases these valves weald be required to aparate properly while at bish temperature, against maniansa pressure differentials, and while sub. jested to a severe accident er metamie vibratory environment. The ammber of Wie asifunctiarm that have been enseuetered during insarvise testa in 4perating plants, raggests that we have met yet establinhad adequate preservise and inservice test programs to assure the operchility of active valves.

In this light se have regiment, your response to our Request for Informatian 4.32, as it applies to active valves, and have came1= dad that the lisaited dy.umage analytical and testing procedures used to ceafirm the operability of all active valves as spesified are fasaffini-t.

As acceptable program useld be is> site valve teettag where the operability of valves is densastrated la the plant during the prosperatiensi i

testing of these systeme desigeod to emi==te category I criteria.

You are requested to provide as an A===d=g=t to your Application, the daentis of seah a program whfah would demonstrate operability under normal system operatise, as well as under superimposed leadingp, j

that appropriately sinalate seismia vibtatory reopeases, and accident j

(LOCA) vibratory reopeases, as appliasble to the systen. This i

program may imelade either the syyliestiam of vibratory devices to superimpeee the vibratory enimmin and aneident loadings or an equivalent combination of analytical and testing methods that confirm operability.

The test program may be beoed span selectively testing a representative number of active valves in the piping systen according to valve type, set-ta and moefdant lead level, size, etc. en a prototype basis.

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J. D. Phillips Because of the scope and the generic nature of the program regimested, you are invitud to discuss this request with the AEC staff at the earliest opportualty.

Sincerely, Original signed by E. 8. Deteens E. C. DeYoung, Assistant Director for Pressurized Water Reactors Directorate of Licensing ec: Horace Jewell, Esquire W==, Holms 4 Jewell 1550 Tower Building Little Rock, Ark===== 72201 DISTRIBUTION 4Dacket File SHanauer 1petemdding RSBoyd RP Reading DSkovholt PWR-4 Reading FSchroeder RBernero DKnuth ASchwencer RTedesco RMaccary HDenton RCDeYoung PWR Branch Chiefs RWKlecker OGC R0 (3)

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DATE >.12 /4.I/72

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's. GOVERWENT PmNTm4 OFFce.1972-466 983

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Form ABC-318 (Rev. 9-53) AECM 0240

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