Process Safety Technical Interview Question Answers
Q1 What is process safety?
Ans :Process safety is a field that focuses on the prevention of accidents and releases of hazardous materials in industrial processes. It encompasses various elements including design, management, and engineering practices that work together to ensure the safe and efficient operation of industrial processes.
Q2 .What is the purpose of a Process Safety Management (PSM) program?
Ans :The purpose of a PSM program is to minimize the likelihood and consequences of an accidental release of hazardous materials from industrial processes. It is a systematic approach to managing the hazards associated with processes that use or produce hazardous chemicals.
Q3 What is a Hazard and Operability (HAZOP) study?
Ans :A HAZOP study is a systematic and structured review of a process or system, with the goal of identifying potential hazards and operability problems. It is a common tool used in process safety management to identify and evaluate the potential consequences of deviations from normal operations.
Q4 .Can you explain the difference between inherent safety and passive safety?
Ans :Inherent safety refers to the design of a process or system to minimize the potential for hazards and reduce the consequences of a release. It involves making changes to the process or system itself to reduce the likelihood of a hazardous event occurring.
Passive safety refers to the design of equipment and systems that will automatically activate in the event of an emergency to minimize the consequences of a release. This can include things like pressure relief valves, fire suppression systems, and emergency shutdown systems.
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Q5 What is a Layer of Protection Analysis (LOPA)?
Ans :A Layer of Protection Analysis (LOPA) is a systematic methodology used to evaluate the effectiveness of multiple layers of protection in reducing the risk of a hazardous event. It involves identifying the potential initiators of a hazardous event and evaluating the protective layers in place to prevent or mitigate the event. The results of a LOPA can be used to determine the need for additional protective measures or to optimize the existing protective measures.
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Q6 What is a safety instrumented system (SIS)?
Ans : safety instrumented system (SIS) is a process control system that is designed to perform specific safety functions in order to prevent or mitigate the consequences of a hazardous event. An SIS typically includes a combination of sensors, logic solvers, and final control elements that work together to perform a specific safety function. For example, a pressure relief valve can be considered an SIS that is designed to automatically open in the event of an overpressure condition to prevent damage to equipment or harm to personnel.
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