You should store flammable and combustible materials in a designated area that is well-ventilated, fire-resistant, and isolated from sources of ignition, such as open flames, sparks, electrical equipment, or heating devices. You should also keep the storage area clean, organized, and free of clutter, debris, or incompatible materials, such as oxidizers, corrosives, or reactives. You should follow the maximum allowable quantity limits for each class of flammable and combustible liquids, and use cabinets, shelves, racks, or pallets that are made of non-combustible materials and have adequate spill containment. You should also install fire extinguishers, sprinklers, alarms, or detectors in the storage area, and post signs that indicate the presence and location of flammable and combustible materials.