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Mechanical

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3pgroup

3pgroup

Mechanical
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Oct 15, 2004
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For vessels subject to internal pressure, the acceptable ASME code out-of-roundness is limited to 1% of
the diameter except when the plane of measurement intersects a nozzle or manhole:?
 
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UG-80 states a maximum of 1% out-of-round difference between minimum and maximum diameters for shells. If the cross section of interest extends thru a nozzle or opening, including up to 1 ID away from the opening (as measured from the centerline of the opening), the out-of-round difference in diameters between shells is permitted to increase to 2% of the ID of the opening.
 
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