Hazard and operability (HAZOP) studies
Safe operations with expert HAZOP analysis
HAZOP is used during the design stages of a new process or project, for major process modifications, and for periodic review of existing operations. The U.S. Occupational Safety and Health Administration (OSHA), as well as other regulators around the world, recognizes the HAZOP technique as an acceptable methodology for evaluating risk.
- Minimizing the risk of hazardous substances and energy being emitted
- Reducing the consequences of a release of the hazardous substances
- Identification of non-obvious hazards
- Establishing the “Design Intent” for the process, including the desired and/or safe ranges for each of the operating parameters
- Applying the Guide Words (No, Less, More, Reverse, etc.) to each of the Process Parameters (Temperature, Pressure, Flow, Level, etc.), to identify deviations from the design intent
- Determining if the control system and emergency systems are adequate and are sufficiently reliable to prevent each deviation - in the form of an initiating event and enabling conditions - from escalating to an undesirable process incident
- Estimating the severity of the consequences of each undesired incident, taking into account mitigation safeguards and conditional factors. Consequences can be further evaluated using our expertise in consequence modeling with specialist software such as PHAST® and Effects®
- Estimating the likelihood of occurrence of each undesired incident
- Utilizing a Risk Matrix to determine the relative risks of the undesired incidents
- Comparing the risk of occurrence for each incident with corporate guidelines for process risk
- Determining the number and types of safeguards and/or process improvements that would be needed to reduce the risks to tolerable levels
- We assess the reliability of your process controls as well as the number and type of risk mitigation measures required.
- We are technical experts for HAZOPs, combined with our competence in process safety technology.
- We have a global presence; therefore, we are trained in local regulations, standards and cultures.
- We can support HAZOPs and other types of PHAs in English, Spanish, Chinese, French, German, Italian, Arabic, Hindi and other languages.