DISTANCES IN FEET | |||||||||
QUANTITY OF EXPLOSIVE MATERIALS | Inhabited Buildings | Public Highways Class A to D | Passenger Railways - Public Highways with Traffic Volume of more than 3,000 Vehicles/Day | Separation of Magazines | |||||
Pounds Over | Pounds Not Over | Barricaded | Unbarricaded | Barricaded | Unbarricaded | Barricaded | Unbarricaded | Barricaded | Unbarricaded |
.001 5 10 20 30 | 5 10 20 30 40 | 70 90 110 125 140 | 140 180 220 250 280 | 30 35 45 50 55 | 60 70 90 100 110 | 51 64 81 93 103 | 102 128 162 186 206 | 6 8 10 11 12 | 12 16 20 22 24 |
40 50 75 100 125 | 50 75 100 125 150 | 150 170 190 200 215 | 300 340 380 400 430 | 60 70 75 80 85 | 120 140 150 160 170 | 110 127 139 150 159 | 220 254 278 300 318 | 14 15 16 18 19 | 28 30 32 36 38 |
150 200 250 300 400 | 200 250 300 400 500 | 235 255 270 295 320 | 470 510 540 590 640 | 95 105 110 120 130 | 190 210 220 240 260 | 175 189 201 221 238 | 350 378 402 442 476 | 21 23 24 27 29 | 42 46 48 54 58 |
500 600 700 800 900 | 600 700 800 900 1,000 | 340 355 375 390 400 | 680 710 750 780 800 | 135 145 150 155 160 | 270 290 300 310 320 | 253 266 278 289 300 | 506 532 556 578 600 | 31 32 33 35 36 | 62 64 66 70 72 |
1,000 1,200 1,400 1,600 1,800 | 1,200 1,400 1,600 1,800 2,000 | 425 450 470 490 505 | 850 900 940 980 1,010 | 165 170 175 180 185 | 330 340 350 360 370 | 318 336 351 366 378 | 636 672 702 732 756 | 39 41 43 44 45 | 78 82 86 88 90 |
2,000 2,500 3,000 4,000 5,000 | 2,500 3,000 4,000 5,000 6,000 | 545 580 635 685 730 | 1,090 1,160 1,270 1,370 1,460 | 190 195 210 225 235 | 380 390 420 450 470 | 408 432 474 513 546 | 816 864 948 1,026 1,092 | 49 52 58 61 65 | 98 104 116 122 130 |
6,000 7,000 8,000 9,000 10,000 | 7,000 8,000 9,000 10,000 12,000 | 770 800 835 865 875 | 1,540 1,600 1,670 1,730 1,750 | 245 250 255 260 270 | 490 500 510 520 540 | 573 600 624 645 687 | 1,146 1,200 1,248 1,290 1,374 | 68 72 75 78 82 | 136 144 150 156 164 |
12,000 14,000 16,000 18,000 20,000 | 14,000 16,000 18,000 20,000 25,000 | 885 900 940 975 1,055 | 1,770 1,800 1,880 1,950 2,000 | 275 280 285 290 315 | 550 560 570 580 630 | 723 756 786 813 876 | 1,446 1,512 1,572 1,626 1,752 | 87 90 94 98 105 | 174 180 188 196 210 |
25,000 30,000 35,000 40,000 45,000 | 30,000 35,000 40,000 45,000 50,000 | 1,130 1,205 1,275 1,340 1,400 | 2,000 2,000 2,000 2,000 2,000 | 340 360 380 400 420 | 680 720 760 800 840 | 933 981 1,026 1,068 1,104 | 1,866 1,962 2,000 2,000 2,000 | 112 119 124 129 135 | 224 238 248 258 270 |
50,000 55,000 60,000 65,000 70,000 | 55,000 60,000 65,000 70,000 75,000 | 1,460 1,515 1,565 1,610 1,655 | 2,000 2,000 2,000 2,000 2,000 | 440 455 470 485 500 | 880 910 940 970 1,000 | 1,140 1,173 1,206 1,236 1,263 | 2,000 2,000 2,000 2,000 2,000 | 140 145 150 155 160 | 280 290 300 310 320 |
75,000 80,000 85,000 90,000 95,000 | 80,000 85,000 90,000 95,000 100,000 | 1,695 1,730 1,760 1,790 1,815 | 2,000 2,000 2,000 2,000 2,000 | 510 520 530 540 545 | 1,020 1,040 1,060 1,080 1,090 | 1,293 1,317 1,344 1,368 1,392 | 2,000 2,000 2,000 2,000 2,000 | 165 170 175 180 185 | 330 340 350 360 370 |
100,000 110,000 120,000 130,000 140,000 | 110,000 120,000 130,000 140,000 150,000 | 1,835 1,855 1,875 1,890 1,900 | 2,000 2,000 2,000 2,000 2,000 | 550 555 560 565 570 | 1,100 1,110 1,120 1,130 1,140 | 1,437 1,479 1,521 1,557 1,593 | 2,000 2,000 2,000 2,000 2,000 | 195 205 215 225 235 | 390 410 430 450 470 |
150,000 160,000 170,000 180,000 190,000 | 160,000 170,000 180,000 190,000 200,000 | 1,935 1,965 1,990 2,010 2,030 | 2,000 2,000 2,000 2,010 2,030 | 580 590 600 605 610 | 1,160 1,180 1,200 1,210 1,220 | 1,629 1,662 1,695 1,725 1,755 | 2,000 2,000 2,000 2,000 2,000 | 245 255 265 275 285 | 490 510 530 550 570 |
200,000 210,000 230,000 250,000 275,000 | 210,000 230,000 250,000 275,000 300,000 | 2,055 2,100 2,155 2,215 2,275 | 2,055 2,100 2,155 2,215 2,275 | 620 635 650 670 690 | 1,240 1,270 1,300 1,340 1,380 | 1,782 1,836 1,890 1,950 2,000 | 2,000 2,000 2,000 2,000 2,000 | 295 315 335 360 385 | 590 630 670 720 770 |
EXPLANATORY NOTES ESSENTIAL TO THE APPLICATION
OF THE AMERICAN TABLE OF DISTANCES FOR
STORAGE OF EXPLOSIVE MATERIALS
NOTE 1 - "Explosive materials" means explosives, blasting agents and detonators.
NOTE 2 - "Explosives" means any chemical compound, mixture or device, the primary or common purpose of which is to function by explosion. A list of explosives determined to be within the coverage of 18 U.S.C. Chapter 40, Importation, Manufacturer, Distribution and Storage of Explosive Materials is issued at least annually by the Director of the Bureau of Alcohol, Tobacco, Firearms and Explosives of the U.S. Department of Justice. For quantity and distance purposes, detonating cord of 50 grains per foot should be calculated as equivalent to 8 lbs. of high explosives per 1,000 feet. Heavier or lighter core loads should be rated proportionately.
NOTE 3 - "Blasting agents" means any material or mixture consisting of fuel and oxidizer, intended for blasting, not otherwise defined as an explosive. However, the finished product, as mixed for use or shipment, cannot be detonated by means of a No. 8 test blasting cap when unconfined.
NOTE 4 - "Detonator" means any device containing any initiating or primary explosive that is used for initiating detonation. A detonator may not contain more than 10 grams of total explosives by weight, excluding ignition or delay charges. The term includes, but is not limited to, electric blasting caps of instantaneous and delay types, blasting caps for use with safety fuses, detonating cord delay connectors, and nonelectric instantaneous and delay blasting caps that use detonating cord, shock tube, or any other replacement for electric leg wires. All types of detonators in strengths through No. 8 cap should be rated at 12/3 lbs. of explosives per 1,000 caps. For strengths higher than No. 8 cap, consult the manufacturer.
NOTE 5 - "Magazine" means any building, structure or container, other than an explosives manufacturing building, approved for the storage of explosive materials.
NOTE 6 - "Natural Barricade" means natural features of the ground, such as hills, or timber of sufficient density that the surrounding exposures that require protection cannot be seen from the magazine when the trees are bare of leaves.
NOTE 7 - "Artificial Barricade" means an artificial mound or revetted wall of earth of a minimum thickness of 3 feet at the top of the mound or wall, or a mound or revetted wall of other material offering equivalent protection. Artificial barricades that are vegetated shall be of sufficient slope to enable mowing.
NOTE 8 - "Barricaded" means the effective screening of a building containing explosive materials from the magazine or other building, railway or highway by a natural or an artificial barrier. A straight line from the top of any sidewall of the building containing explosive materials to the eave line of any magazine or other building or to a point 12 feet above the center of a railway or highway shall pass through the barrier.
NOTE 9 - "Inhabited Building" means a building regularly occupied in whole or part as a habitation for human beings, or any church, schoolhouse, railroad station, store or other structure where people are accustomed to assemble, except any building or structure occupied in connection with the manufacture, transportation, storage or use of explosive materials.
NOTE 10 - "Railway" means any steam, electric or other railroad or railway that carries passengers for hire.
NOTE 11 - "Highway" means any public street, public alley or public road.
NOTE 12 - When two or more storage magazines are located on the same property, each magazine must comply with the minimum distances 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 explosive materials contained in detonator magazines shall govern in regard to the spacing of those detonator magazines from magazines containing other explosive materials. If any two or more magazines are separated from each other by less than the specified "Separation of Magazines" distances, then those magazines, as a group, must be considered as one magazine, and the total quantity of explosive materials stored in such group must be treated as if stored in a single magazine located on the site of any magazine of the group, and must comply with the minimum of distances specified from other magazines, inhabited buildings, railways and highways.
NOTE 13 - Storage in excess of 300,000 lbs. of explosive materials in one magazine is generally not required for commercial enterprises.
NOTE 14 - This Table applies only to the manufacture and permanent storage of commercial explosive materials. It is not applicable to transportation of explosives or any handling or temporary storage necessary or incident to the transportation, handling or storage. It is not intended to apply to bombs, projectiles or other heavily encased explosives.
NOTE 15 - When a manufacturing building on an explosive materials plant site is designed to contain explosive materials, the building shall be located away from inhabited buildings, public highways and passenger railways in accordance with the American Table of Distances based on the maximum quantity of explosive materials permitted to be in the building at one time.
(NOTE: The American Table of Distances for Storage of Explosive Materials and accompanying Explanatory Notes are copyrighted materials reproduced with the permission of the Institute of Makers of Explosives. The notes contained in this Appendix are meant to supplement, and not supersede, the regulations contained in this Part. When wording differs between the regulations and these explanatory notes, the regulations shall govern for enforcement purposes.)
Ill. Admin. Code tit. 62, pt. 200, subpt. K, app A