Process Hazards Analysis is a structured technique to identify and quantify the risks associated with hazardous substances processed in a facility, which could potentially threat employees, the public, the environment and the assets.
The training course is focused on providing the principles of Quantitative Risk Assessment (CCPS – QRA), detailing the referenced methodologies and tools available to identify process heavy, to model consequences, to assess the damage effects and to estimate the relevant likelihood.
Participants will develop the knowledge and skills, through the use of interactive case studies, necessary to understand and to contribute to the development of a risk assessment study within a Safety Report. The workshop will provide case studies aimed at improving the familiarity with the techniques and methodologies to be applied.
Quantitative Risk Assessment
- Introduction to Risk Management and Assessment
- Brief presentation of EU Seveso Directive with main principles and objectives
- Basic principles of dangerous substances classification
- Historical analysis; techniques and tools for the identification of the major-accidents. Examples of detailed report and lesson learning process
- Introduction to Hazard and Operability (HAZOP) methodology and to the use of the results in the identification of the major-accidents
- Basic description of reliability with focus of the identification of failure rates and unavailability of complex systems
- Fault Tree Analysis fundamental principles and its application on the major-accident frequency calculation (with worked examples and analysis of the effects of mitigating measures)
- Approach to random failure (basic data base, use of corrective factors, API RP 581 approach).
- Source terms definition and analysis of major-accidents dynamics (time for intervention, detection network, isolation systems, etc.)
- Analysis of evolution of possible alternative scenarios by means of the Event Tree technique (probability of ignition, frequency of alternative scenarios like jet fires, pool fires, UVCE, BLEVE, etc.)
- Major-accidents consequences assessment (basics of thermodynamics and chemistry behind the phenomena associated to a loss of containment, simplified formulas for estimation of the damage distances, use of dedicated software tools for consequences assessment)
- Structured approach to domino effects evaluation (main governing elements, calculation of domino effects frequency, estimation of risk reduction due to mitigating measures, role of active and passive fire-fighting measures)
- Risk presentation and elements for decision makers (risk acceptability criteria and risk ranking, elements for land use planning and external emergency planning).
Case study: Risk Analysis exercise, including:
- Identification of accidents scenarios, frequency estimate and consequences evaluation
- Application of risk acceptability criteria
The exercise will usually be customized on the basis of an effective case.
Training sessions will be basically held in English language, with translation of material and speeches in national language if required.
Please follow the Course Calendar for individual participation / call us for group participations.