Indiana Administrative Code
Title 675 - FIRE PREVENTION AND BUILDING SAFETY COMMISSION
Article 22 - FIRE PREVENTION CODES
Rule 2.5 - 2014 Indiana Fire Code
Section 2.5-51 - Appendix VI-F; recommended separation distances for explosives

Universal Citation: 675 IN Admin Code 2.5-51

Current through September 18, 2024

Authority: IC 22-13-2-2

Affected: IC 22-11-14; IC 22-12-7; IC 22-13; IC 22-14; IC 36-8-17

Sec. 51.

(a) Portions of this work are reproduced from the 1997 edition of the Uniform Fire Code, Appendix VI-F, copyright© 1997, with the permission of the publisher, the International Conference of Building Officials. ICBO assumes no responsibility for the accuracy or completion of summaries provided therein.

(b) Add Appendix VI-F to read as follows:

APPENDIX VI-F

RECOMMENDED SEPARATION DISTANCES FOR EXPLOSIVE MATERIALS (See Chapter 33)

The following information is provided as reference information for application of Chapter 56 and IC 22-11-14.

The information provided in Section 1 is excerpted from federal regulations in 49 CFR, Parts 171-173. A discussion of the new regulations is also provided.

Table A-VI-F-5 is reprinted with permission of the Institute of Makers of Explosives with the provision that the entire table, complete with all explanatory footnotes, is printed. Table A-VI-F-5 is used for magazines containing high explosives or a combination of high explosives and low explosives, and for magazines containing blasting agents.

TABLE A-VI-F-2 - DEFINITIONS FOR DIVISIONS OF CLASS 1 (EXPLOSIVE) MATERIALS DIVISION DEFINITION

TABLE A-VI-F-2 - DEFINITIONS FOR DIVISIONS OF CLASS 1 (EXPLOSIVE) MATERIALS
DIVISION DEFINITION
1.1 Explosives that have a mass hazard explosion. A mass explosion is one that affects almost the entire load instantaneously. (Examples include dynamite, cap-sensitive water gels, slurries, emulsions, and cast boosters.)
1.2 Explosives that have a projection hazard but not a mass explosion hazard. (Examples include ammunition, projectiles, and bombs.)
1.3 Explosives that have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard. (Examples include some propellants, some fireworks, and flares.)
1.4 Explosive devices that present a minor explosion hazard. External fire must not cause virtually instantaneous explosion of almost the entire contents of the package. (Examples include some detonators and detonating cords, safety fuse, electric squibs, igniters, igniting cord, and some fireworks.)
1.5 Very insensitive explosives. This division is comprised of substances that have a mass explosion hazard but are so insensitive that there is very little probability of initiation or of transition from burning to detonation under normal conditions of transport. (Examples include blasting agents.)
1.6 Extremely incentive articles that do not have a mass explosion hazard. This division is comprised of articles that contain only extremely insensitive detonation substances and that demonstrate a negligible probability of accidental initiation or propagation. (This division is not commonly used for commercial explosives.)

FIRE PREVENTION CODES

TABLE A-VI-F-3 - COMPARISON OF OLD TO CURRENT EXPLOSIVES CLASSIFICATIONS
CLASS A EXPLOSIVES May be either DIVISION 1.1 or 1.2 depending on the material
CLASS B EXPLOSIVES May be either DIVISION 1.2 or 1.3 depending on the material
CLASS C EXPLOSIVES DIVISION 1.4
BLASTING AGENTS DIVISION 1.5
(NO APPLICABLE CLASS) DIVISION 1.6

TABLE A-VI-F-4 - EXPLOSIVES COMPATIBILITY GROUPS
DESCRIPTION OF SUBSTANCES OR ARTICLE TO BE CLASSIFIED COMPATIBILITY GROUP CLASSIFICATION CODE
Primary explosive substance. A 1.1A
Article containing a primary explosive substance and not containing two or more effective protective substances. B 1.1B, 1.2B, 1.4B
Propellant explosive substance or other deflagrating explosive substance or article containing such explosive substance. C 1.1C, 1.2C, 1.3C, 1.4C
Secondary detonating explosive substance or black powder or article containing a secondary detonating explosive substance, in each case without means of initiation and without a propelling charge, or article containing a primary explosive substance and containing two or more effective protective features. D 1.1D, 1.2D, 1.4D, 1.5D
Article containing a secondary detonating explosive substance, without means of initiation, with a propelling charge (other than one containing flammable liquid or hypergolic liquid). E 1.1E, 1.2E, 1.4E
Article containing a secondary detonating explosive substance with its means of initiation, with a propelling charge (other than one containing flammable liquid or hypergolic liquid) or without a propelling charge. F 1.1F, 1.2F, 1.3F, 1.4F
Pyrotechnic substance or article containing a pyrotechnic substance, or article containing both an explosive substance and an illuminating, incendiary, tear-producing or smoke-producing substance (other than a water-activated article or one containing white phosphorus, phosphide, or flammable liquid or gel or hypergolic liquid). G 1.1G, 1.2G, 1.3G, 1.4G
Article containing both an explosive substance and white phosphorus. H 1.2H,1.3H
Article containing both an explosive substance and flammable liquid or gel. J 1.1J, 1.2J, 1.3J
Article containing both an explosive substance and a toxic chemical agent. K 1.2K, 1.3K
Explosive substance or article containing an explosive substance and presenting a special risk (e.g., due to water-activation or presence of hypergolic liquids, phosphides, or pyrophoric substances) needing isolation of each type. L 1.1L, 1.2L, 1.3L
Articles containing only extremely insensitive detonating substances. N 1.6N
Substance or article so packed or designed that any hazardous effects arising from accidental functioning are limited to the extent that they do not significantly hinder or prohibit firefighting or other emergency response efforts in the immediate vicinity of the package. S 1.4S

TABLE A-VI-F-5 - AMERICAN TABLE OF DISTANCES FOR STORAGE OF EXPLOSIVE MATERIALS As Revised and Approved by the Institute of Makers of Explosives - June 199114

QUANTITY OF

EXPLOSIVE

MATERIALS123415

Inhabited Buildings9

Public Highways with

Traffic Volume of less

than 3,000 Vehicles per

Day

Passenger Railways -

Public Highways with

Traffic Volume of more

than 3,000 Vehicles

/Day1011

Separation of Magazines 512

Pounds Over

Pounds Not Over

Barricaded6 7

Unbarricad ed

Barricade

d678

Unbarricad ed

Barricade

d678

Unbarricade d

Barricade

d678

Unbarrica ded

x 0.454 Per kg

0

5

70

140

30

60

51

102

6

12

5

10

90

180

35

70

64

128

8

16

10

20

110

220

45

90

81

162

10

20

20

30

125

250

50

100

93

186

11

22

30

40

140

280

55

110

103

206

12

24

40

50

150

300

60

120

110

220

14

28

50

75

170

340

70

140

127

254

15

30

75

100

190

380

75

150

139

278

16

32

100

125

200

400

80

160

150

300

18

36

125

150

215

430

85

170

159

318

19

38

150

200

235

470

95

190

175

350

21

42

200

250

255

510

105

210

189

378

23

46

250

300

270

540

110

220

201

402

24

48

300

400

295

590

120

240

221

442

27

54

400

500

320

640

130

260

238

476

29

58

500

600

340

680

135

270

253

506

31

62

600

700

355

710

145

290

266

522

32

64

700

800

375

750

150

300

278

556

33

66

800

900

390

780

155

310

289

578

34

68

900

1,000

400

800

160

320

300

600

36

72

1,000

1,200

425

850

165

330

318

636

39

78

1,200

1,400

450

900

170

340

336

672

41

82

1,400

1,600

470

940

175

350

351

702

43

86

1,600

1,800

490

980

180

360

366

732

44

88

1,800

2,000

505

1,010

185

370

378

756

45

90

2,000

2,500

545

1,090

190

380

408

816

49

98

2,500

3,000

580

1,160

195

390

432

864

52

104

3,000

4,000

635

1,270

210

420

474

949

58

116

4,000

5,000

685

1,370

225

450

513

1,026

61

122

5,000

6,000

730

1,460

235

470

546

1,092

65

130

6,000

7,000

770

1,540

245

490

573

1,146

68

136

7,000

8,000

800

1,600

250

500

600

1,200

72

144

8,000

9,000

835

1,670

255

510

624

1,248

75

150

9,000

10,000

865

1,730

260

520

645

1,290

78

156

10,000

12,000

875

1,750

270

520

687

1,374

82

164

12,000

14,000

885

1,770

275

550

723

1,446

87

174

14,000

16,000

900

1,800

280

560

756

1,512

90

180

16,000

18,000

940

1,880

285

570

786

1,572

94

188

18,000

20,000

975

1,950

290

580

813

1,626

98

196

20,000

25,000

1,055

2,000

315

630

876

1,752

105

210

25,000

30,000

1,130

2,000

340

680

933

1,866

112

224

30,000

35,000

1,205

2,000

360

720

981

1,962

119

238

35,000

40,000

1,275

2,000

380

760

1,026

2,000

124

248

40,000

45,000

1,340

2,000

400

800

1,068

2,000

129

258

45,000

50,000

1,400

2,000

420

840

1,104

2,000

135

270

50,000

55,000

1,460

2,000

440

880

1,140

2,000

140

280

55,000

60,000

1,515

2,000

455

910

1,173

2,000

145

290

60,000

65,000

1,565

2,000

470

940

1,206

2,000

150

300

65,000

70,000

1,610

2,000

485

970

1,236

2,000

155

310

70,000

75,000

1,655

2,000

500

1,000

1,263

2,000

160

320

75,000

80,000

1,695

2,000

510

1,020

1,293

2,000

165

330

80,000

85,000

1,730

2,000

520

1,040

1,317

2,000

170

340

85,000

90,000

1,760

2,000

530

1,060

1,344

2,000

175

350

90,000

95,000

1,790

2,000

540

1,080

1,368

2,000

180

360

95,000

100,000

1,815

2,000

545

1,090

1,392

2,000

185

370

100,000

110,000

1,835

2,000

550

1,100

1,437

2,000

195

390

110,000

120,000

1,855

2,000

555

1,110

1,479

2,000

205

410

120,000

130,000

1,875

2,000

560

1,120

1,521

2,000

215

430

130,000

140,000

1,890

2,000

565

1,130

1,557

2,000

225

450

140,000

150,000

1,900

2,000

570

1,140

1,593

2,000

235

470

150,000

160,000

1,935

2,000

580

1,160

1,629

1,866

245

490

160,000

170,000

1,990

2,000

590

1,180

1,662

1,962

255

510

170,000

180,000

2,010

2,000

600

1,200

1,695

2,000

265

530

180,000

190,000

2,030

2,000

605

1,210

1,725

2,000

275

550

190,000

200,000

2,055

2,000

610

1,220

1,755

2,000

285

570

205,000

210,000

2,055

2,000

620

1,240

1,762

2,000

295

590

210,000

230,000

2,100

2,000

635

1,270

1,836

2,000

315

630

230,000

250,000

2,155

2,000

650

1,300

1,890

2,000

335

670

250,000

275,000

2,215

2,000

670

1,340

1,950

2,000

360

720

275,000

300,000"

2,275

2,000

690

1,380

2,000

2,000

385

770

1 "Explosive materials" means explosives, blasting agents and detonators.

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 and Firearms of the Department of the Treasury. For quantity and distance purposes, detonating cord of 50 grains per foot (10.7g/m) should be calculated as equivalent to 8 pounds (3.6 kg) of high explosives per 1,000 feet (304.8 m). Heavier or lighter core loads should be rated proportionately.

3 "Blasting agents" means any material or mixture, consisting of fuel and oxidizer, intended for blasting, not otherwise defined as an explosive, provided that the finished product, as mixed for use or shipment, cannot be detonated by means of a No. 8 test blasting cap when unconfined.

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 within safety fuses, detonating cord delay connectors, and non-electric instantaneous and delay blasting caps which 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 1 1/2 pounds (0.68 kg) of explosives per 1,000 caps. For strengths higher than No. 8 cap, consult the manufacturer.

5 "Magazine" means any building, structure, or container, other than an explosives manufacturing building, approved for the storage of explosive materials.

6 "Natural barricade" means natural features of the ground such as hills, or timber of sufficient density that the surrounding exposure which require protection cannot be seen from the magazine when the trees are bare of leaves.

7 "Artificial barricade" means an artificial mound or riveted wall of earth of a minimum thickness of 3 feet (914.4 mm).

8 "Barricaded" means the effective screening of a building containing explosive materials from the magazine or other building, railway or highway by a natural

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.

10 "Railway" means any steam, electric, or other railroad or railway that carries passengers for hire.

11 "Highway" means any public street, public alley, or public road.

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 said 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 such two or more 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.

13 Storage in excess of 300,000 pounds (136,077.6 kg) of explosive materials in one magazine is generally not required for commercial enterprises.

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 incidental thereto. It is not intended to apply to bombs, projectiles, or other heavily encased explosives.

15 When a manufacturing building on an explosive materials plant site is designed to contain explosive materials, such building shall be located from inhabited buildings, public highways, and passenger railways in accordance with Table A-VI-F-5 based on the maximum quantity of explosive materials permitted to be in the building at one time.

The American Table of Distances (Table A-VI-F-5) is reprinted by permission of the Institute of Makers of Explosives with the provision that the entire table, complete with all explanatory footnotes, be printed.

TABLE A-VI-F-6 - TABLE OF RECOMMENDED SEPARATION DISTANCES OF AMMONIUM NITRATE AND BLASTING AGENTS FROM EXPLOSIVES OR BLASTING AGENTS1 6

DONOR WEIGHT

MINIMUM SEPARATION DISTANCE OF ACCEPTOR WHEN BARRICADED2 (feet)

MINIMUM THICKNESS OF

ARTIFICIAL BARRICADES5

(inches)

Pounds Over

Pounds Not Over

X 304.8 Per mm

X 0.484 Per kg

Ammonium Nitrate3

Blasting Agent4

X 25.4 Per mm

100

3

11

12

100

300

4

14

12

300

600

5

18

12

600

1,000

6

22

12

1,000

1,600

7

25

12

1,600

2,000

8

29

12

2,000

3,000

9

32

15

3,000

4,000

10

36

15

4,000

6,000

11

40

15

6,000

8,000

12

42

20

8,000

10,000

13

47

20

10,000

12,000

14

50

20

12,000

16,000

15

54

25

16,000

20,000

16

58

25

20,000

25,000

18

65

25

25,000

30,000

19

68

30

30,000

35,000

20

72

30

35,000

40,000

21

76

30

40,000

45,000

22

79

35

45,000

50,000

23

83

35

50,000

55,000

24

86

35

55,000

60,000

25

90

35

60,000

70,000

26

94

40

70,000

80,000

28

101

40

80,000

90,000

30

108

40

90,000

100,000

32

115

40

100,000

120,000

34

122

50

120,000

140,000

37

133

50

140,000

160,000

40

144

50

160,000

180,000

44

158

50

180,000

200,000

48

173

50

200,000

220,000

52

187

60

220,000

250,000

56

202

60

250,000

275,000

60

216

60

275,000

300,000

64

230

60

1 Recommended separation distances to prevent explosion of ammonium nitrate and ammonium nitrate-based agents by propagation from nearby stores of high explosives or blasting agents referred to in Table A-VI-F-6 as the "donor." Ammonium nitrate, by itself, is not considered to be a donor when applying Table A-1 Recommended separation distances to prevent explosion of ammonium nitrate and ammonium nitrate-based agents by propagation from nearby stores of high explosives or blasting agents referred to in Table A-VI-F-6 as the "donor." Ammonium nitrate, by itself, is not considered to be a donor when applying Table A-VI-F-6, Ammonium nitrate, ammonium nitrate-fuel oil, or combination thereof are acceptors. If stores of ammonium nitrate are located within the sympathetic detonation distance of explosives or blasting agents, one-half the mass of the ammonium nitrate should be included in the mass of the donor.

2 When the ammonium nitrate or blasting agent is not barricaded, the distances shown in Table A-VI-F-6 shall be multiplied by six. These distances allow for the possibility of high velocity metal fragments from mixers, hoppers, truck bodies, sheet metal structures, metal containers, and the like that may enclose the "donor." Where storage is in bullet resistant magazines recommended for explosives or where the storage is protected by a bullet resistant wall, distances and barricade thicknesses in excess of those prescribed in Table A-VI-F-5, Footnote 7, are not required. For construction of bullet resistant magazines, see Article 77.

3 The distances in Table A-VI-F-6 apply to ammonium nitrate that passes the insensitivity test prescribed in the definition of ammonium nitrate fertilizer promulgated by the Fertilizer Institute (Definitions and Test Procedure for Ammonium Nitrate Fertilizer, Fertilizer Institute 1964); and ammonium nitrate failing to pass said test shall be stored at separation distances determined by competent persons and approved by the authority having jurisdiction.

4 These distances apply to blasting agents which pass the insensitivity test prescribed in regulations of the United States Department of Transportation and the United States Department of the Treasury, Bureau of Alcohol, Tobacco and Firearms.

5 Earth, or sand dikes, or enclosures filled with the prescribed minimum thickness of earth or sand are acceptable artificial barricades. Natural barricades, such as hills or timber of sufficient density that the surrounding exposure which requires protection cannot be seen from the "donor" when the trees are bare of leaves, are also acceptable.

6 For determining the distances to be maintained from inhabited buildings, passenger railways, and public highways, see Table A-VI-F-5 (High Explosives and Blasting Agents) or Table A-VI-F-7 (Low Explosives).

TABLE A-VI-F-7 TABLE OF DISTANCES FOR STORAGE OF LOW EXPLOSIVES

LOW EXPLOSIVES (pounds)

FROM INHABITED

BUILDING DISTANCE

(feet)

FROM PUBLIC RAILROAD

AND HIGHWAY DISTANCE

(feet)

FROM ABOVEGROUND MAGAZINE (feet)

X 0.484 per kg

Over

Not Over

x 304.3 per cm

0

1,000

75

75

60

1,000

5,000

115

115

75

5,000

10,000

130

130

100

10,000

20,000

180

180

125

20,000

30,000

215

215

145

30,000

40,000

235

235

155

40,000

50,000

250

250

165

50,000

60,000

260

260

175

60,000

70,000

270

270

185

70,000

80,000

300

300

190

80,000

90,000

325

325

195

90,000

100,000

350

350

200

100,000

200,000

375

375

250

200,000

300,000

400

400

300

TABLE A-VI-F-8 - DISTANCES FOR THE OPEN BURNING OF EXPLOSIVES1

QUANTITY OF EXPLOSIVES2 3 4 5 (Not Over) MINIMUM DISTANCE IN FEET
× 304.8 Per mm
Inhabited Buildings9 Public Highways with Traffic Volume of less than 3,000 Vehicles per Day Passenger Railways and Public Highways with Traffic Volumes more than 3,000 Vehicles per Day10 11 Separation From Other Open Burning Units
Pounds No Missile Hazard Missile Hazard Without Barricade6 7 8 No Missile Hazard Missile Hazard Without Barricade No Missile Hazard Missile Hazard Without Barricade
X 0.484 Per kg
10 90 180 35 70 64 128 8
20 110 220 45 90 81 162 10
50 150 300 60 120 110 220 14
75 170 340 70 140 127 254 15
100 190 380 75 150 139 278 16
250 255 510 105 210 189 378 23
500 320 640 130 260 238 476 29
1,000 400 800 160 320 300 600 36
1,600 470 940 175 350 351 702 43
2,000 505 1,010 185 370 378 756 45
2,500 545 1,090 190 380 408 816 49
3,000 580 1,160 195 390 432 864 52
4,000 635 1,270 210 420 474 948 58
5,000 685 1,370 225 450 513 1,026 61
6,000 730 1,460 235 470 546 1,092 65
7,000 770 1,540 245 490 573 1,146 68
8,000 800 1,600 250 500 600 1,200 72
9,000 835 1,670 255 510 624 1,248 75
10,000 865 1,730 260 520 645 1,290 78

1 This table is intended only for application of open burning of commercial explosive materials. The distances stated in this table should be measured from the center of the unit, except for separations from other open-burning units, which are measured from the edge of the unit.

2 "Explosive materials" means any explosive, slurry, emulsion, detonating cord, blasting agents, and detonators.

3 "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, Manufacture, Distribution and Storage of Explosive Material, is issued at least annually by the director of the Bureau of Alcohol, Tobacco, and Firearms of the Department of the Treasury. For quantity and distance purposes, detonating cord of 50 grains per foot (10.7 g/m) should be calculated as equivalent to 8 pounds (3.6 kg) of high explosives per 1,000 feet (304.8 m). Heavier or lighter core loads should be rated proportionally.

4 "Blasting agents" means any material or mixture, consisting of fuel and oxidizer, intended for blasting, not otherwise defined as an explosive, provided the finished product, as mixed for use or shipment, cannot be detonated by means of a No. 8 test blasting cap when unconfined.

5 "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 blasting caps that use detonating cord, shock tube, or any other replacement for electric wires. All types of detonators in strengths through No. 8 cap should be rated at 1 1/2 pounds (0.68 kg) of explosives per 1,000 caps. For strengths higher than No. 8 cap, consult the manufacturer.

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.

7 "Artificial barricade" means an artificial mound or riveted wall of earth of a minimum thickness of 3 feet (914.4 mm).

8 "Barricaded" means the effective screening of a building containing explosive materials from the magazine or other building, OB/OD site, 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 (3,657.6 mm) above the center of a railway or highway shall pass through such a barrier.

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. This does not mean any office, warehouse, production, laboratory, or other buildings that are a part of the facility where the open burning or open detonation sites are located.

10 "Highway" means any public street, public alley, or public road.

11 "Railway" means any steam, electric, or other railroad or railway that carries passengers for hire.

TABLE A-VI-F-9 - DISTANCES FOR THE OPEN DETONATION OF EXPLOSIVES1

QUANTITY OF EXPLOSIVES2 3 4 5 (Not Over) MINIMUM DISTANCE IN FEET
X 304.8 Per mm
Inhabited Buildings9 Public Highways with Traffic Volume of less than 3,000 Vehicles per Day Passenger Railways and Public Highways with Traffic Volumes more than 3,000 Vehicles per Day10 11 Separation From Other Open Detonation Units
Pounds No Missile Hazard Missile Hazard Without Barricade6 7 8 No Missile Hazard Missile Hazard Without Barricade6 7 8 No Missile Hazard Missile Hazard Without Barricade6 7 8 No Missile Hazard Missile Hazard Without Barricade6 7 8
1 730 730 325 325 480 480 6 12
2 920 920 410 410 600 600 6 12
5 1,250 1,250 550 550 820 820 6 12
10 1,600 1,600 695 695 1,030 1,030 8 16
20 1,990 1,990 875 875 1,295 1,295 10 20
50 2,700 2,700 1,190 1,190 1,760 1,760 14 28
75 3,080 3,080 1,360 1,360 2,015 2,015 15 30
100 3,400 3,400 1,500 1,500 2,220 2,220 16 32
150 3,900 3,900 1,715 1,715 2,535 2,535 19 38
200 4,275 4,275 1,890 1,890 2,795 2,795 21 42
300 4,900 4,900 2,160 2,160 3,200 3,200 24 48
400 5,400 5,400 2,380 2,380 3,520 3,520 27 54
500 5,800 5,800 2,560 2,560 3,790 3,790 29 58

1 This table is intended only for application of open burning of commercial explosive materials. The distances stated in this table should be measured from the center of the unit, except for separations from other open-burning units, which are measured from the edge of the unit.

2 "Explosive materials" means any explosive, slurry, emulsion, detonating cord, blasting agents, and detonators.

3 "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, Manufacture, Distribution and Storage of Explosive Material, is issued at least annually by the director of the Bureau of Alcohol, Tobacco, and Firearms of the Department of the Treasury. For quantity and distance purposes, detonating cord of 50 grains per foot (10.7 g/m) should be calculated as equivalent to 8 pounds (3.6 kg) of high explosives per 1,000 feet (304.8 m). Heavier or lighter core loads should be rated proportionally.

4 "Blasting agents" means any material or mixture, consisting of fuel and oxidizer, intended for blasting, not otherwise defined as an explosive, provided the finished product, as mixed for use or shipment, cannot be detonated by means of a No. 8 test blasting cap when unconfined.

5 "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 blasting caps that use detonating cord, shock tube, or any other replacement for electric wires. All types of detonators in strengths through No. 8 cap should be rated at 1 1/2 pounds (0.68 kg) of explosives per 1,000 caps. For strengths higher than No. 8 cap, consult the manufacturer.

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.

7 "Artificial barricade" means an artificial mound or riveted wall of earth of a minimum thickness of 3 feet (914.4 mm).

8 "Barricaded" means the effective screening of a building containing explosive materials from the magazine or other building, OB/OD site, 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 (3,657.6 mm) above the center of a railway or highway shall pass through such a barrier.

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. This does not mean any office, warehouse, production, laboratory, or other buildings that are a part of the facility where the open burning or open detonation sites are located.

10 "Highway" means any public street, public alley, or public road.

11 "Railway" means any steam, electric, or other railroad or railway that carries passengers for hire.

The American Table of Distances (Table A-VI-F-5) is reprinted by permission of the Institute of Makers of Explosives with the provision that the entire table, complete with all explanatory footnotes, be printed.

Disclaimer: These regulations may not be the most recent version. Indiana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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