5604.5.2.1 Location.
FC § 5604.5.2.1
All outdoor magazines, other than Type 3 magazines, shall be located so as to be in accordance with FC Table 5604.5.2(2), 5604.5.2(3) or 5604.5.2(4) as set forth in FC Table 5604.5.2(1). FC Table 5604.5.2(1)Application of Separation Distance Table a DOTn DivisionAmerican Table of Distances for Storage of Explosives 5604.5.2(2)(DOJ 27 CFR Part 555.218)Table of Separation Distances for Low Explosives 5604.5.2(3)(DOJ 27 CFR Part 555.219)Table of Distances for Outdoor Magazines or Buildings Containing Explosives Division 1.45604.5.2(4)DOTn DivisionAmerican Table of Distances for Storage of Explosives 5604.5.2(2)(DOJ 27 CFR Part 555.218)Table of Separation Distances for Low Explosives 5604.5.2(3)(DOJ 27 CFR Part 555.219)Table of Distances for Outdoor Magazines or Buildings Containing Explosives Division 1.45604.5.2(4)1.1X——1.2X——1.3—X—1.4G or 1.4S——X1.4B or 1.4S detonators——X1.5X——1.6Not ApplicableNot ApplicableNot Applicable a. Where adjacent magazines contain different classes of explosives the separation between magazines shall be as prescribed by FC Table 5604.5.2(2). FC Table 5604.5.2(2)American Table of Distances for Storage of Explosives (As Revised June 1991) a Quantity ofExplosives b, eDistances in FeetInhabited buildingsPublic highways with traffic volume less than 3,000 vehicles per dayPublic highways with traffic volume greater than 3,000 vehicles per day and passenger railwaysSeparation of magazines dPoundsoverPoundsnot overBarricadedUnbarricadedBarricadedUnbarricadedBarricadedUnbarricadedBarricadedUnbarricaded051020305102030407090110125140140180220250280303545505560709010011051648193103102128162186206681011121216202224405075100125507510012515015017019020021530034038040043060707580851201401501601701101271391501592202542783003181415161819283032363815020025030040020025030040050023525527029532047051054059064095105110120130190210220240260175189201221238350378402442476212324272942464854585006007008009006007008009001,00024035537539040048071075078080013514515015516027029030031032025326627828930050653255657860031323335366264667072 For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg. a. This table applies to the storage of explosives, except for temporary storage incidental to transportation. b. Storage of explosives in a quantity exceeding 1,000 pounds in one magazine is prohibited. c. Reserved. d. Where two or more storage magazines are located on the same property, each magazine shall comply with the minimum distance specified from inhabited buildings, railways and highways, and, in addition, they should be separated from each other by not less than the distances shown for separation of magazines, except that the quantity of explosives in detonator magazines shall govern in regard to the spacing of said detonator magazines from magazines containing other explosives. Where any two or more magazines are separated from each other by less than the specified separation of magazine distances, then two or more such magazines, as a group, shall be considered as one magazine, and the total quantity of explosives stored in such group shall be treated as if stored in a single magazine located on the site of any magazine in the group and shall comply with the minimum distances specified from other magazines, inhabited buildings, railways and highways. e. The quantity of explosives refers to pounds of trinitrotoluene (TNT), or for other type explosives, the quantity of TNT with the equivalent explosive energy. FC Table 5604.5.2(3)Table of Distances for Outdoor Magazines or Buildings Containing Explosives – Division 1.3 – Mass-Fire Hazard a,b,c Quantity of Division 1.3 ExplosivesDistances in FeetPounds overPounds not overInhabited buildings, railways and public highwaysMagazines 01,0007550 For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg. a. Black powder, when stored in magazines, is defined as low explosive by the Bureau of Alcohol, Tobacco and Firearms (BATF). b. For quantities less than 1,000 pounds, the required distances are those specified for 1,000 pounds. The commissioner may authorize storage of such explosives in quantities less than 1,000 pounds at lesser distances from protected exposures. c. No more than 50 pounds of explosives may be stored in a building. FC Table 5604.5.2(4)Table of Distances for Outdoor Magazines or Buildings Containing Explosives – Division 1.4 c,d Quantity of Division 1.4 ExplosivesDistances in FeetPounds OverPounds Not OverFrom Inhabited BuildingFrom Public Railroad and HighwayFrom Aboveground Magazine and OperatingBuildings a, b501,00010010050 For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg. a. A separation distance of 100 feet is required for buildings of other than Type I or Type II construction as defined in the Building Code. b. For earth-covered magazines, no specified separation is required.
1.Earth cover material used for magazines shall be relatively cohesive. Solid or wet clay and similar types of soil are too cohesive and shall not be used. Soil shall be free from unsanitary organic matter, trash, debris and stones heavier than 10 pounds or larger than 6 inches in diameter. Compaction and surface preparation shall be provided, as necessary, to maintain structural integrity and avoid erosion. Where cohesive material cannot be used, as in sandy soil, the earth cover over magazines shall be finished with a suitable material to ensure structural integrity.
2.The earth fill or earth cover between earth-covered magazines shall be either solid or sloped, in accordance with the requirements of other construction features, but a minimum of 2 feet of earth cover shall be maintained over the top of each magazine. To reduce erosion and facilitate maintenance operations, the cover shall have a slope of 2 horizontal to 1 vertical. c. Restricted to articles, including articles packaged for shipment, that are not regulated as an explosive under Bureau of Alcohol, Tobacco and Firearms regulations, or unpacked articles used in process operations that do not propagate a detonation or deflagration between articles. d. No more than 50 pounds of explosives may be stored in a building.
