ML20056B639

Discusses Insp of License DPR-22 on 711111-12.No Violations Noted.Major Areas Inspected:Calibr Procedure Mods for ECCS Pump Start Switches & Effect of HPCI Sys Actuation W/Main Steam Line Flow

ML20056B639
Person / Time
Site:	Monticello
Issue date:	12/07/1971
From:	Grier B US ATOMIC ENERGY COMMISSION (AEC)
To:	Wachter L NORTHERN STATES POWER CO.
References
NUDOCS 9102070651
Download: ML20056B639 (2)

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UNITED STATES ATOMIC ENERGY COMMISSION I

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Desember 7,,1M1 g,;~,t

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. q Northern States Power Coisneny Donket 50, 50-265 h.j..R-ATI'N Mr. Leo Wachter, h President O /h Power Production am4 ',ystems

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g Operations 414 Nicollet Mall Em

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Minneapolis, Minnesota 55401

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Gentlemen

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., S This refers to the inspection conducted by Messrs. Seyfrit. Feierabend Rg and Johnson of this office on November 11 and 12,1971, of activities i l7 at the Monticello plant authorized by AEC License No. DPR-22, and to the discussion of our findings held by Messrs. Feierabend and Johnson j (."

with Messrs. Larson, Clarity, Jacobson and Bill of your staff at the conclusion of the inspection.

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The areas exa:nined during this inspection included calibration procedure

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modifications for emergency core cooling system ru:np start switchee, 17.C

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effect of high pressure coolant injcetion system actuation with snain Pj.f, secam line flow, residual heat romoval service water flow calibration,

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circu:astances associated with the core spray header differential 4

pressure switch isolation and greater than specified usin steam line h'

differential pressure switch trip settings, reactor water cleanup

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system isolation valve performance, pressure relief valve operation, surveillance testing program, scram recovery operations on September 28

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1971, and the status of facility Quality Assurance Program development.

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Within these areas, the inspection consisted of selective examination U[U. '

of procedures and representative records, interviews with plant

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personnel, and observations by the inspectors.

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No items of noncompliance with AEC requirements were identified within

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s the scope of this inspection.

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We understand that you are currently preparing a quality Assurance manual for the operation of the Montleelle plant. We will saamine this p

matter during subsequent inspostions.

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December 7, 1971

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No reply t.o t.his letter La mesassaryg hwever, should you have questions

!0 concerning this inspection, we will be glad to dL:; ass thea with ym j

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