Readily visible signs prohibiting smoking and open flames must be posted where a fire or explosion hazard exists. This includes places where flammable or combustible liquids, greases, or gases are stored. Buildings or rooms should be properly ventilated and be protected by fire resistant construction, a fire suppression system, or a fire detection device. Be sure that materials that are dangerous when combined are stored separately. The National Fire Protection Association is a good source of information on these topics.

Use properly identified safety cans for small quantities of flammable liquids drawn from storage.

Combustible waste materials, including liquids, cannot be allowed to accumulate in quantities that could create a fire hazard. Until disposed of properly, place waste or rags containing flammable or combustible liquids in covered metal containers, or equivalent.

Remove all scrap lumber, waste material, and rubbish from the immediate work area as work progresses.

In buildings under construction, don’t place stored materials near a hoistway or floor opening, or an exterior wall that doesn’t extend above the top of the material.

Bins, hoppers, silos, and tanks should be designed and equipped so that it is normally not necessary to enter them. When it does become necessary the supply and discharge equipment needs to be locked out and ladders, platforms, or staging used. Persons entering must wear a safety belt or harness with a suitably fastened lifeline. A second person, who is similarly equipped and stationed near where the lifeline is fastened, makes constant adjustments to minimize slack.

30 CFR Part 47 - Hazard Communication (HazCom)

30 CFR § 56.4100 Smoking and use of open flames.

30 CFR § 56.4101 Warning signs.

30 CFR § 56.4104 Combustible waste.

30 CFR § 56.4531 Flammable or combustible liquid storage buildings or rooms.

30 CFR § 56.15005 Safety belts and lines.

30 CFR § 56.16002 Bins, hoppers, silos, tanks, and surge piles.

30 CFR § 56.16003 Storage of hazardous materials.

30 CFR § 56.16004 Containers for hazardous materials.

30 CFR § 56.16012 Storage of incompatible substances.

30 CFR § 77.208 Storage of materials.

30 CFR § 77.1102 Warning signs; smoking and open flame.

30 CFR § 77.1103 Flammable liquids; storage.

30 CFR § 77.1104 Accumulations of combustible materials.

30 CFR § 77.1710 Protective clothing; requirements. [see subpart (g)]