Moderate Fire Hazard, No Blast Materials

(CLASS 1, DIVISION 4). Items in this division present a fire hazard with no blast hazard and virtually no fragmentation or toxic hazard beyond the fire hazard clearance specified for high-risk materials. However, separate facilities for storage and handling of this division should not be less than 100 feet from other facilities. However, if the facilities are of fire-resistive construction, they may be 50 feet from each other. If devices containing explosives are such that accidental ignition during storage or transport will not cause external damage to the devices, either by fire, smoke, heat, loud noise, or by visible damage to the outer packaging, they are not considered Class 1 items. These devices may be considered inert for storage purposes and marked AMMUNITION NONEXPLOSIVE for transport purposes. Certain articles within the division that contain one ounce or less of explosives have (based on test results) been classified as Class 1, Division 4S. These articles may be considered inert for storage purposes, and they are not subject to explosive transportation regulations. Articles containing larger quantities of explosives, also classified as Class 1, Division 4S, may be considered inert for storage purposes. However, they must be reviewed on an individual basis to determine whether explosive transportation regulations are applicable.