Look for possible sources of heat that could get hot enough to create a fire, such as:
Scorch marks, cigarette burns and charred electrical plugs on electrical equipment can help identify hazards.
Look for the items that you keep in sufficient quantities and that will burn relatively easily. It will provide a fire with fuel and cause it to spread to other fuel sources.
Some common flammable materials include cardboard, paper, flammable liquids, waste, plastics, fabrics, materials and soft furnishing.
The main source of oxygen for a fire is the air, either from natural airflow or air conditioning/handling systems.
Other sources of oxygen include fireworks and oxygen from cylinder storage and piped systems (e.g. oxygen used in welding processes and for hospital patients).