PROCESS HAZARD IDENTIFICATION

PROCESS HAZARD IDENTIFICATION - PROCESS HAZARD...

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PROCESS HAZARD IDENTIFICATION We need to know what the hazards are and where they exist in the process. Process Information Process Structure Feed, Product, By-product & Waste Structure Safety Structure Recycle Structure Separation Structure Heat Integration Process Control Structure
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Identify hazards. Evaluate them for risk. Inherently Safer Processes Strategies MINIMIZE Use smaller quantities of hazardous substances. SUBSTITUTE Replace hazardous substances with a less hazardous ones. MODERATE Use less hazardous conditions, a less hazardous forms of a material, or less hazardous facilities. SIMPLIFY Use less complexity. PROCESS HAZARD IDENTIFICATION
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Where to begin?
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Accidents ACCIDENT CAUSES/RATES Frequency of Hardware Failure/100 Events Piping 29 Miscellaneous or Unknown 22 Storage Tanks 17 Reactors Piping Systems 10 Process Holding Tanks 5 Heat Exchangers 4 Valves 4 Process Towers 3 Compressors 2 Pumps 2 Gages 2
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Hazards definitions Hazards are chemical or physical characteristics of the system that have the potential to cause harm to people, plant & environment. Flammability Toxicity Pressure Temperature
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Hazards definitions Loss prevention is the prevention of accidents by the use of appropriate technologies to identify the hazards of a chemical plant and to eliminate (minimize) them before they occur. Identify Minimize Eliminate Technologies
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Risk Risk is a measure of the safety within the engineering system. It is determined by defining a consequence of an event and then determining the probability of that event will occur. Risk = Probability * Consequence Event Probability Consequence
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WHAT ARE HAZOPS?
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