Many people don't realize how improper storage of certain materials can create hazards. A common, but mistaken, assumption might sound like this: "We've stored those chemicals in the same way in the same place for the last 20 years, and nothing bad ever happened, so why would it in the future?"

But chemicals, especially flammable, combustible or corrosive chemicals, can be extremely dangerous if stored improperly. Fire or explosions can result due to improper handling of these chemicals. Improper storage of flammable liquids is the most common cause of industrial fires.

To avoid the dangers caused by improper chemical storage, employers need to question themselves the following four areas:

What is being stored? The physical and chemical properties of stored hazardous materials must be understood. Have you determined whether a material is considered hazardous or not? The Material Safety Data Sheet (MSDS) is instrumental for this determination.

Why is it being stored? Risk assessments should be performed to determine if the chemical in question is necessary. If the process the chemical is used for could be completed using a less hazardous chemical, making the change would be sensible environmental control.

Where is it being stored? The storage needs to be clearly defined as permanent, temporary or transient. Make sure employees know where the storage is located. The storage is most vulnerable when it is located in an area where employees don't expect it to be.

How is it being stored? Make sure that you are following all local, state and federal regulations for the materials being stored. That means following all Environmental Protection Agency (EPA) regulations regarding secondary containment, and all National Fire Protection Agency (NFPA) and Occupation Safety and Health Administration (OSHA) regulations for flammable liquid.

As always, proper employee training will help keep an environment safe. Employees need to know what can happen if chemicals are not stored properly. They need to know how to react if a container is damaged or a leak occurs. This training falls under the Hazard Communication Act (29 CFR 1910.1200). This is the regulation most consistently cited by OSHA every year. Employers need to make sure that all chemicals are properly labeled and that MSDS's are available to all employees.

For more information on chemical storage visit OSHA's Web site at http://www.osha.gov.