The first step in risk assessment is to identify the chemical hazards, associated with the activity. A chemical inventory can be useful. When recording all potential chemical hazards, look beyond the obvious. As well as considering the use of chemical agents, look at chemicals or substances that may be produced by a process, for example welding fumes, respirable crystalline silica etc.. Evaluate the internal transport, storage and the quantities of chemicals being stored as well as waste disposal and emergencies e.g. spill or leak. Consider all materials and mixtures, for example, items like glues, food stuffs, cosmetics, materials used by maintenance such as oils, gardening materials, water treatment and cleaning materials. It may be possible to group chemicals into specific tasks e.g. cleaning a bathroom and complete a task or activity based chemical risk assessment.

Identify the chemical hazards associated with the activity e.g. cleaning. Consider who might be affected and how they might be harmed. Evaluate the risks - what are you doing now and what further precautions are needed? Document and implement your findings. Update and review as required.