HAZOP is based on the assumption that hazards happen because elements of design and operation can deviate from their original intention.
With the risk assessment process, users analyze organizations to:
Identify processes and situations that can cause harm to the organization and / or people.
Determine the probability of each hazard occurring and how severe the consequences would be.
Decide what steps the organization can take to prevent these hazards from occurring or to control the risk.
It is important to note the difference between dangers and risks. A hazard is anything that can cause harm, including workplace accidents, emergencies, toxic chemicals, employee conflict, stress, and more. A risk, on the other hand, is the possibility of a hazard causing harm. As part of the risk assessment plan, hazards should be identified and the risk or probability of hazards occurring will then be calculated.