3. Reduce hazard potential

3.1 Reducing hazard potential

Before going any further with the preliminary risk analysis (PRA), it is necessary to reduce hazard potential at source. This involves four principles:

• substitution principle: a dangerous product is replaced by a less dangerous one;

• principle of intensification: reducing the volume of equipment;

• Mitigation principle: less dangerous process parameters are defined (lower temperature or pressure);

• limitation principle: equipment is designed to reduce the impact of an accidental event.

For technical and/or financial reasons, it is often difficult to reduce the hazard potential...