The main difference is what they focus on: Aspect HAZID /HAZCOM

 The main difference is what they focus on:

Aspect HAZID /HAZCOM

Full meaning / Hazard Identification / Hazard Communication

Main purpose / Identify hazards and assess potential risks / Communicate hazards and safety information to workers

Focus / Finding hazards / Sharing hazard information

Typical application / Processes, projects, workplaces, equipment, activities / Mainly hazardous chemicals

When used / During design, planning, projects, changes, and risk reviews / Before and during chemical handling, storage, and use

Key methods/tools / Brainstorming, checklists, HAZOP, What-if, FMEA / Labels, SDS, pictograms, training, procedures

Main output / Identified hazards, consequences, risks and recommendations / Hazard information that workers can understand and act upon

Example / Identifying toxic-gas release as a potential hazard in a process / Informing workers about the toxic gas through labels, SDS and training.

Simple way to remember

HAZID = “What can hurt us?”

HAZCOM = “How do we tell people about the hazard and protect themselves?”

Example:

If a chemical storage area contains a toxic chemical:

HAZID identifies the possibility of a toxic exposure, evaluates the risk and recommends controls.

HAZCOM ensures workers receive the chemical's label, SDS, hazard information, precautions and training.

So, HAZID finds the hazards; HAZCOM communicates the hazards. 🌡️💥✅💡🦺⛑️📝🌡️🚧🚥⚠️

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