ML20128D926

Requests Concurrence of Listed Schedule for Review of Prompt Relief Trip & Related Analytical Methods for Overpressure Transients by 740322

ML20128D926
Person / Time
Site:	Monticello
Issue date:	03/20/1974
From:	Skovholt D US ATOMIC ENERGY COMMISSION (AEC)
To:	Stello V US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 9212070424
Download: ML20128D926 (2)

Text

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$ MAR Z 01974 1 i t

Docket No. 50-263 i

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1.

I V. Stello, Assistant Director for Reactor Safety, L PRT AND TRANSIENT AllALYSIS REVIEW SCHEDULE l  !

To meet our connaitinents to Northern States Power for review of the Proset Relief Trip (PRT) and the related analytical methods for over-pressure transients, we havo developed the following schedule. Your

! concurrence by March 22, 1974, is requested.

Prompt Relief Valve Trip _ _(PRT),

j April 26,1974 - TR completes evaluation of safety aspects of Honticello startup with PRT connected

• May 3,1974 - AEC-L evaluation of Monticello PET connections

issued

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- i i May 10, 1974 - TR questions related to use of PRT or preparations I

for a meeting with NSP representatives i

l June 23,1974 - TR completes safety evaluation - Credit for Ptf l f

• August 16, 1974 - AEC L Safety Evaluation of PRT as compensation i  !

for scram reactivity issued l Analytical Methods of Plant Transient Evaluations for the General t

l Electric Boiling Water Reactor (Ref. NEDO-10802 - February 1973, i  ;

lisp submittal related to PRT and reduced pressure relief capacity -

' January 23, 1974, and "BWR Overpressure Protection" note provided with TAR 868) l April 15, 1974 - TR issuen questions related to the references above I

j

• April 19,1974 - Questions to CE and NSF issued

• May 20, 1974 - CE and MSP responses to AEC questions 4

9212070424 740320 PDR ADOCK 05000263 p PDR

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j  ; June 3,1974 - Additional TR questione-or meeting with GE and 4

NSP representatives July 12,1974 - T1 evaluation released

• August 14, 1974 - AEC-L evaluation issued I

. Only the astericked items will be shown in the schedule forwarded to i

! 82P. The final issuance dates in August are consistent with your earlier 4

l statement (February 19,1974) and fall within the expected operational period at the BOC 3 when dependence on the PRT for reactor protection l is not required.

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Original samma a D J, rkovbolt l

Donald J. Skot %1t Assistant Ditwater for Operating Reactors

, Directorate of Licensing I

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