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// CODE SNIPPET

5604.5.2 Outdoor Magazines

Fire Code 2018 of Colorado > 56 Explosives and Fireworks > 5604 Explosive Materials Storage and Handling > 5604.5 Location > 5604.5.2 Outdoor Magazines
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Outdoor magazines other than Type 3 shall be located so as to comply with Table 5604.5.2(2) or 5604.5.2(3) as set forth in Tables 5601.8.1(1) through 5601.8.1(3). Where a magazine or group of magazines, as described in Section 5604.5.2.2, contains different classes of explosive materials, and Division 1.1 materials are present, the required separations for the magazine or magazine group as a whole shall comply with Table 5604.5.2(2).
TABLE 5604.5.2(1)
AMERICAN TABLE OF DISTANCES FOR STORAGE OF EXPLOSIVES AS APPROVED BY THE INSTITUTE OF MAKERS OF EXPLOSIVES AND REVISED JUNE 1991a
QUANTITY OF EXPLOSIVE MATERIALScDISTANCES IN FEET
Inhabited 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 magazinesd
Pounds overPounds not overBarricadedUnbarricadedBarricadedUnbarricadedBarricadedUnbarricadedBarricadedUnbarricaded
0570140306051102612
51090180357064128816
10201102204590811621020
203012525050100931861122
3040140280551101032061224
4050150300601201102201428
5075170340701401272541530
75100190380751501392781632
100125200400801601503001836
125150215430851701593181938
150200235470951901753502142
2002502555101052101893782346
2503002705401102202014022448
3004002955901202402214422754
4005003206401302602384762958
5006003406801352702535063162
6007003557101452902665323264
7008003757501503002785563366
8009003907801553102895783570
9001,0004008001603203006003672
1,0001,2004258501653303186363978
1,2001,4004509001703403366724182
1,4001,6004709401753503517024386
1,6001,8004909801803603667324488
1,8002,0005051,0101853703787564590
2,0002,5005451,0901903804088164998
2,5003,0005801,16019539043286452104
3,0004,0006351,27021042047494858116
4,0005,0006851,3702254505131,02661122
5,0006,0007301,4602354705461,09265130
6,0007,0007701,5402454905731,14668136
7,0008,0008001,6002505006001,20072144
8,0009,0008351,6702555106241,24875150
9,00010,0008651,7302605206451,29078156
10,00012,0008751,7502705406871,37482164
12,00014,0008851,7702755507231,44687174
14,00016,0009001,8002805607561,51290180
16,00018,0009401,8802855707861,57294188
18,00020,0009751,9502905808131,62698196
20,00025,0001,0552,0003156308761,752105210
25,00030,0001,1302,0003406809331,866112224
30,00035,0001,2052,0003607209811,962119238
35,00040,0001,2752,0003807601,0262,000124248
40,00045,0001,3402,0004008001,0682,000129258
45,00050,0001,4002,0004208401,1042,000135270
50,00055,0001,4602,0004408801,1402,000140280
55,00060,0001,5152,0004559101,1732,000145290
60,00065,0001,5652,0004709401,2062,000150300
65,00070,0001,6102,0004859701,2362,000155310
70,00075,0001,6552,0005001,0001,2632,000160320
75,00080,0001,6952,0005101,0201,2932,000165330
80,00085,0001,7302,0005201,0401,3172,000170340
85,00090,0001,7602,0005301,0601,3442,000175350
90,00095,0001,7902,0005401,0801,3682,000180360
95,000100,0001,8152,0005451,0901,3922,000185370
100,000110,0001,8352,0005501,1001,4372,000195390
110,000120,0001,8552,0005551,1101,4792,000205410
120,000130,0001,8752,0005601,1201,5212,000215430
130,000140,0001,8902,0005651,1301,5572,000225450
140,000150,0001,9002,0005701,1401,5932,000235470
150,000160,0001,9352,0005801,1601,6292,000245490
160,000170,0001,9652,0005901,1801,6622,000255510
170,000180,0001,9902,0006001,2001,6952,000265530
180,000190,0002,0102,0106051,2101,7252,000275550
190,000200,0002,0302,0306101,2201,7552,000285570
200,000210,0002,0552,0556201,2401,7822,000295590
210,000230,0002,1002,1006351,2701,8362,000315630
230,000250,0002,1552,1556501,3001,8902,000335670
250,000275,0002,2152,2156701,3401,9502,000360720
275,000300,000b2,2752,2756901,3802,0002,000385770
For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg.
  1. 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 thereto. It is not intended to apply to bombs, projectiles or other heavily encased explosives.
  2. Storage in excess of 300,000 pounds of explosive materials in one magazine is not allowed.
  3. Where a manufacturing building on an explosive materials plant site is designed to contain explosive materials, such building shall be located with respect to its proximity to inhabited buildings, public highways and passenger railways based on the maximum quantity of explosive materials permitted to be in the building at one time.
  4. Where two or more storage magazines are located on the same property, each magazine shall 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 explosives in detonator magazines shall govern in regard to the spacing of said detonator magazines from magazines containing other explosive materials. Where any two or more magazines are separated from each other by less than the specified separation of magazines distances, then two or more such magazines, as a group, shall be considered as one magazine, and the total quantity of explosive materials 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.
TABLE 5604.5.2(2)
TABLE OF DISTANCES (Q-D) FOR BUILDINGS AND MAGAZINES CONTAINING EXPLOSIVES—DIVISION 1.3 MASS-FIRE HAZARDa, b, c
QUANTITY OF DIVISION 1.3 EXPLOSIVES
(NET EXPLOSIVES WEIGHT)
DISTANCES IN FEET
Pounds overPounds not overInhabited Building
Distance (IBD)
Distance to Public Traffic
Route (PTR)
Intermagazine Distance
(IMD)
Intraline Distance (ILD)
or Intraplant Distance
(IPD)
01,00075755050
1,0005,0001151157575
5,00010,000150150100100
10,00020,000190190125125
20,00030,000215215145145
30,00040,000235235155155
40,00050,000250250165165
50,00060,000260260175175
60,00070,000270270185185
70,00080,000280280190190
80,00090,000295295195195
90,000100,000300300200200
100,000200,000375375250250
200,000300,000450450300300
For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg.
  1. Black powder, where stored in magazines, is defined as low explosive by the Bureau of Alcohol, Tobacco, Firearms and Explosives (BATF).
  2. For quantities less than 1,000 pounds, the required distances are those specified for 1,000 pounds. The use of lesser distances is allowed where supported by approved test data or analysis.
  3. Linear interpolation of explosive quantities between table entries is allowed.
TABLE 5604.5.2(3)
TABLE OF DISTANCES (Q-D) FOR BUILDINGS AND MAGAZINES CONTAINING EXPLOSIVES—DIVISION 1.4c
QUANTITY OF DIVISION 1.4 EXPLOSIVES
(NET EXPLOSIVES WEIGHT)
DISTANCES IN FEET
Pounds overPounds not overInhabited Building
Distance (IBD)
Distance to Public
Traffic Route (PTR)
Intermagazine
Distancea, b (IMD)
Intraline Distance (ILD)
or Intraplant Distancea
(IPD)
50Not Limited1001005050
For SI: 1 foot = 304.8 mm, 1 pound = 0.454 kg.
  1. A separation distance of 100 feet is required for buildings of other than Type I or Type II construction as defined in the International Building Code.
  2. For earth-covered magazines, specific separation is not required.
  3. 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.
  4. 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 not less than 2 feet of earth cover shall be maintained over the top of each magazines. To reduce erosion and facilitate maintenance operations, the cover shall have a slope of 2 horizontal to 1 vertical.
  5. Restricted to articles, including articles packaged for shipment, that are not regulated as an explosive under Bureau of Alcohol, Tobacco, Firearms and Explosives regulations, or unpacked articles used in process operations that do not propagate a detonation or deflagration between articles.

5604.5.2.1 Separation

Where two or more storage magazines are located on the same property, each magazine shall comply with the minimum distances specified from inhabited buildings, public transportation routes and operating buildings. Magazines shall be separated from each other by not less than the intermagazine distances (IMD) shown for the separation of magazines.

5604.5.2.2 Grouped Magazines

Where two or more magazines are separated from each other by less than the intermagazine distances (IMD), such magazines as a group shall be considered as one magazine and the total quantity of explosive materials stored in the group shall be treated as if stored in a single magazine. The location of the group of magazines shall comply with the intermagazine distances (IMD) specified from other magazines or magazine groups, inhabited buildings (IBD), public transportation routes (PTR) and operating buildings (ILD or IPD) as required.

Related Code Sections


5604.5.2 Explosives and Fireworks, Outdoor Magazines
Outdoor magazines other than Type 3 shall be located so as to comply with Table 5604.5.2(2) or 5604.5.2(3) as set forth in Tables 5601.8.1(1) through ...
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The storage of explosive materials in outdoor magazines in quantities exceeding 50 pounds (23 kg) net explosive weight shall be limited to storage ...
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