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Out-of-Roundness Function in Pipe Collapse Calculation for API RP 1111

Out-of-Roundness Function in Pipe Collapse Calculation for API RP 1111

Out-of-Roundness Function in Pipe Collapse Calculation for API RP 1111

(OP)
currently i'm working in FEED project and require me to calculate the pipe collapse due to external pressure.

Based on API RP 1111, do I need to consider the out-of-roundness function in the Collapse formula.

Need some helps.

Thanks.

RE: Out-of-Roundness Function in Pipe Collapse Calculation for API RP 1111

If I remember correctly, use 3%.  

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