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How to Store Flammable Liquids on Site

Knowing how to store flammable liquids on site is one of the most important safety duties any employer has. Under the Dangerous Substances and Explosive Atmospheres Regulations (DSEAR), if you keep petrol, diesel, solvents, thinners or similar materials on a site, you have to control the fire and explosion risk they create, and safe storage is central to that. This guide covers what that means in practice and how to get it right.

What does DSEAR say about storing flammable liquids?

DSEAR requires you to assess and control the risks from dangerous substances, which includes flammable liquids and the vapours they give off. For storage that means keeping quantities in the work area as low as possible, storing the rest securely away from ignition sources, containing any leaks or spills, and ventilating the store so vapours cannot build into an atmosphere that could ignite. You also need to know what you hold, so keep the safety data sheet for each substance to hand.

Where should flammable liquids be stored on site?

Store them away from people, work activities and every ignition source, in a secure, ventilated store rather than a corner of the cabin or the back of a van. A purpose-built flammable liquid box keeps the materials separate, secure and identified, and keeps the vapours ventilated. Keep only what you need for the task in the work area, and return the rest to the store.

How to store flammable liquids safely: the steps

  1. Assess what you hold. List the flammable liquids on site and read the safety data sheet for each, which tells you the storage conditions and the hazards.
  2. Reduce quantities. Keep only the minimum in the work area, and store the rest in a dedicated flammable store.
  3. Keep away from ignition. Store flammables away from hot work, electrical sources, sparks and naked flames, and label the store so people keep ignition sources clear.
  4. Contain. Store liquids so a leak or split container is caught rather than spreading. A sealed steel box holds spills inside the unit.
  5. Ventilate. Use a store with ventilation so vapours disperse instead of concentrating into an explosive atmosphere.
  6. Secure. Lock the store so only authorised people can open it, and keep it upright and stable.
  7. Label. Mark the store with the correct hazard warning labels so its contents are obvious at a glance.

Why a dedicated flammable liquid box helps

Most of the duties above are far easier to meet with a purpose-built box than with a makeshift store. A FlamSafe® flammable liquid box helps you comply with the safe storage of chemicals and flammable liquids. The sealed welded steel body keeps materials locked away and holds any leak or spill inside the box, the internal ventilation lets vapours disperse, and the high-visibility red finish with hazard warning labels means the box identifies itself so people keep ignition sources away. It takes your own padlock, so you control access. For a small site it can be the single item that turns risky, scattered storage into something secure and demonstrable.

Store your site flammables safely with a FlamSafe® flammable liquid box from WI Products, dispatched on a 48-hour delivery. Browse the range or contact the team to choose the right size.

Frequently asked questions

Do I legally have to store flammable liquids in a special container?

DSEAR does not name a specific product, but it does require you to control the risk through secure, contained, ventilated storage away from ignition. A purpose-built flammable liquid box is one of the simplest ways to meet those duties on site.

How much flammable liquid can I keep in the work area?

Keep it to the minimum needed for the task, and store the rest in a dedicated flammable store. Your DSEAR risk assessment sets the quantities for your situation.

Where should the store be kept on site?

Away from people, work activities and ignition sources, in a secure and ventilated position. It should be stable, lockable and clearly labelled.

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