Flammables and explosives
The nature of your stock will play a large part in setting the odds of a fire or explosion within your premises. For example, the propellant gases used in aerosol cans today are often flammable gases (typically a liquefied petroleum gas (LPG)) which, if accidentally released inside a building, have the potential to form an explosive mixture within the air. As well as the propellant, the product in the can may be a flammable liquid. Another type of product to take care with is oil seeds and oil-based products (e.g. vegetable oil, paints, varnishes) as they can have the potential to spontaneously combust.
Wherever flammable or explosive products and materials are stored or used, hazards that could lead to ignition, such as a rise in temperature, naked flames and vehicle impact, need to be controlled, if not eliminated. The interpretation and application of, and compliance with, the 'zoning' requirements of the Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) can be complicated so the relevant risk assessments must be completed by a competent person with appropriate knowledge and relevant experience and training.
An added risk to consider in some warehouses is the presence of 'high intensity discharge' (HID) lamps. These lamps can operate at high internal temperatures and pressures and the bulbs may sometimes shatter explosively or break due to being knocked, leading to hot glass and bulb components falling or being propelled toward people or combustible items.
Consequently, if you have HID lighting in any part of your premises, the lamps need to have suitable fire resistant, non-combustible housings and they shouldn't be in any area where they might be prone to damage (e.g. from a lift truck).