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Upheaval buckling
Pipeline upheaval buckling and required cover — DNV-RP-F110
This page describes pipeline upheaval buckling and required cover — dnv-rp-f110 and the associated engineering assessment topics. Project use requires qualified inputs and engineering review.
Assessment topics
- Screen a buried line for upheaval buckling from an imperfection under temperature and pressure.
- Work out the download (cover/rock) needed to restrain it.
- Report the required cover height and where rock dump is needed.
Related standards
DNV-RP-F110
Upheaval buckling
Buried pipeline
Cover height
Rock dump
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Questions
What is upheaval buckling?
A buried high-temperature line at a vertical imperfection (an overbend) can push up through its cover; the design provides enough download — soil cover or rock dump — to hold it down. DNV-RP-F110 governs it.
What assessment outputs are described?
An upheaval susceptibility screen and the required cover/download to restrain the line, flagging where rock dump is needed.
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