§200.APPENDIX A. American Table of Distances for Storage of Explosive Materials

		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
2 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 USC 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 1⅔ 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 three feet.

 

            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 carriers 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.)

 

(Source:  Amended at 37 Ill. Reg. 14090, effective August 26, 2013)