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  1. PipelineEgr

    Hoop stress design factor for offshore flanges?

    Hi everyone, I was wondering if flanges follows the same hoop stress design factors for offshore pipeline used in, say ASME B31.8? For example location class 2 uses 0.5 factor whereas 0.72 applies along the location class 1. But what if, the demarcation point between location class 1 and 2 are...
  2. PipelineEgr

    Temperature de-rating for flanges

    Hi everyone. can anyone explain if flanges have any temperature de-rating factors used for design/material? i am aware of the pressure-temperature rating factor when choosing the flange # class. However, I would like to know if there are any temperature de-rating used maybe in ASME VIII Div. 1...
  3. PipelineEgr

    Differences between Table 1, 2, 3 and 4 in ASME Section II Part D

    Hi, Does anyone knows the differences between table 1, 2, 3 and 4 and ASME Section II Part D? They seems to have different allowable tensile stress ratio (e.g. 1/4xSMTS, 1/3xSMTS, 1/3.5xSMTS). What table is applicable for a bolted flange design? My guess would be either 3 and 4 since the table...

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