Appendix 3

An Illustration of HAZOP Study for a Continuous Operation


A detailed description of all the stages of a HAZOP study of a continuous process, illustrated by consideration of an off-shore wellhead gas platform linked to a central process facility. The process is described and general process data provided. The issues and methodology are set out. The P&ID used is included along with cause and effect tables. A detailed report from the HAZOP study is given for two nodes.


Continuous process HAZOP; process description; process data; P&ID; HAZOP report.

The model used for this illustration of the HAZOP study is of an offshore wellhead gas platform linked to a central process facility (CPF) by a 15 km subsea pipeline. There ...

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