ML20244C940

Forwards LS Rubenstein 840515 Memo Discussing NRR Activity Re Operability of Ac Vital Bus (Class IE) When Power Supplied from non-Class IE Power Source.Tech Spec Action Statement 3.8.2.1 Not Invoked

ML20244C940
Person / Time
Site:	Davis Besse, 05000000
Issue date:	05/30/1984
From:	Eisenhut D Office of Nuclear Reactor Regulation
To:	Norelius C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML16342B348	List: IA-87-121, Discusses Inservice Test Programs Re Full Stroke Exercising of Normally Closed Swing or Tilting Disk Check Valves Per 10CFR50.55a & Section XI of ASME Code ML16342B347 ML20235B266 ML20235B268 ML20235B295 ML20235B304 ML20235B322 ML20235B406 ML20235B470 ML20235B514 ML20235B581 ML20235B613 ML20235B673 ML20235B768 ML20235B785 ML20235B799 ML20235B859 ML20235B877 ML20235B922 ML20235C007 ML20235C967 ML20235C970 ML20235D014 ML20235D041 ML20235D091 ML20235D157 ML20235D188 ML20235D233 ML20235D400 ML20235D433 ML20235D484 ML20235D532 ML20244B491 ML20244B568 ML20244B571 ML20244B913 ML20244B937 ML20244B941 ML20244B943 ML20244C126 ML20244C271 ML20244C361 ML20244C777 ML20244C785 ML20244C833 ML20244C935 ML20244C940 ML20244C986 ML20244D413 ML20244D552 ... further results
References
FOIA-87-121 TAC-54262, NUDOCS 8406080101
Download: ML20244C940 (1)

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NUCL'L AR REGUL ATORY COMMISSION f,f' h,$T/JF t

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....a MEMORANDUM FOR:

C. E. Norelius, Director Eb Division of Project and Resident Programs

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Darrell G. Eisenhut, Director fg' ' ".

i Division of Licensing, NRR

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SUBJECT:

NRR TECHNICAL ASSISTANCE - INTERPRETATION OF TECHNICAL SPECIFICATIONS APPLICABLE TO VITAL BUSES POWERED FRCM N0h-CLASS 1E P06lERfSOURCE (DAVIS-BESSE) i Your February 21, 1964 memorandum requested the NRR position relating to the operability of an AC vital bus (Class 1E) when power is supplied from a non Class IE power source. The enclosed memorandum fror L. S. Rubenstein to G.

C. Lainas briefly identifies the NRR activities with respect to this issue.

We conclude that Actied Statement 3.8.2.1 of the Davis Besse Technical Specifications is not ; invoked when the AC Vital Buses are powered f rom non Class IE power sources.

This completes our activities with spect to TIA 64-15.

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Enclosure:

As Stated cc w/ enclosure:

A. De Agazio J. 51017 G. Lainas t

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