Chapter 10

Advanced Aspects of HAZOP Study

This chapter covers the HAZOP study of computer-controlled processes, human factors in HAZOP study, and linking of HAZOP study to layer of protection analysis (LOPA). Guidance is given on how the hardware and software of a computer-controlled system may be examined including reference to EU legislation. Two levels of examination are described, enhanced HAZOP study and CHAZOP—a full examination of a computer system. The need for an earlier HS 2 is explained. The section on Human Factors briefly covers typical human behavior and links this to the HAZOP style search for hazard and operability problems. The importance of considering human factors in the HAZOP study of procedures is included. The section on ...

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