ML20197K029

Recommends That Restriction Re Parking Location of Polar Crane to Preclude Jet Impingement Be Included in Tech Specs. Tech Specs Should Not Be Written for Turbine Bldg Bridge Cranes Unless Spacing Limits Become Permanent

ML20197K029
Person / Time
Site:	05000000, Diablo Canyon
Issue date:	07/16/1985
From:	Bosnak R Office of Nuclear Reactor Regulation
To:	Novak T Office of Nuclear Reactor Regulation
Shared Package
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References
FOIA-86-197 TAC-60525, TAC-60526, NUDOCS 8507250244
Download: ML20197K029 (1)

Text

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MEMORANDUM FOR:

Thomas M. Novak, Assistant Director for Licensing Division of Licensing FROM:

Robert J. Bosnak, Acting Assistant Di ector 1/

for Components Structures Engineering Division of Engineering

SUBJECT:

DIABLO CANYON TECHNICAL SPECIFICATION The polar crane in the containment and the bridge cranes in the turbine building are restricted from certain conditions by administrative controls imposed by PG&E.

For the polar crane the restriction is the parking location to preclude jet impingement should a pipe rupture in the containment. This administrative control appears to be a permanent restriction and should be included in the technical specifications. Should it be shown that the polar crane can withstand the jet impingerrent the restriction can be removed.

The two turbine building bridge cranes are restricted from entering the end bays of the turbine building by rail clamps. However, the restriction of placing one crane relative to the other crane relies on visual controls imposed by an administrative procedure. We understand that this restriction-may be modified or removed depending on the results of a currently ongoing engineering analysis. We recomend that this crane not have a technical specification unless the spacing limits become permanent. Should this spacing become permanent the limits should be incorporated in the technical specification, f.

Robert Bosnak, Acting Assistant Director for Components and Structures Engineering Division of Engineering cc:

J. Knight R. Bosnak G. Lear C. Moon M. Virgilio P. Kuo H. Polk lag'

.