Federal regulations · Through 2026-08-25 · Newer source version available

14 CFR Appendix E to Part 420: Appendix E to Part 420—Tables for Explosive Site Plan

Table E-1—Division 1.1 Distances to a Public Area or Public Traffic Route for NEW ≤450 lbs
NEW (lbs.) Distance to public area (ft) 1 2 Distance to public traffic route distance (ft) 2
≤0.5 236 142
0.7 263 158
1 291 175
2 346 208
3 378 227
5 419 251
7 445 267
10 474 284
15 506 304
20 529 317
30 561 337
31 563 338
50 601 361
70 628 377
100 658 395
150 815 489
200 927 556
300 1085 651
450 1243 746
1 To calculate distance d to a public area from NEW:
NEW ≤0.5 lbs: d = 236
0.5 lbs <NEW <100 lbs: d = 291.3 + [79.2 *ln(NEW)]
100 lbs ≤NEW ≤450 lbs: d = −1133.9 + [389 *ln(NEW)]
NEW is in lbs; d is in ft; ln is natural logarithm.
To calculate maximum NEW given distance d (noting that d can never be less than 236 ft):
0 ≤d <236 ft: Not allowed (d cannot be less than 236 ft)
236 ft ≤d <658 ft: NEW = exp [(d/79.2)-3.678]
658 ft ≤d <1250 ft: NEW = exp [(d/389) + 2.914]
NEW is in lbs; d is in ft; exp[x] is ex.
2 The public traffic route distance is 60 percent of the distance to a public area.
Table E-2—Division 1.1 Distance to Public Area and Public Traffic Route for NEW >450 lbs
NEW (lbs) Distance to public area (ft) 1 Distance to public traffic route (ft)
450 lbs<NEW ≤30,000 lbs 1,250 750.
30,000 lbs<NEW ≤100,000 lbs 40*NEW 1/3 0.60*(Distance to Public Area).
100,000 lbs<NEW ≤250,000 lbs 2.42*NEW 0.577 0.60*(Distance to Public Area).
250,000 lbs<NEW 50*NEW 1/3 0.60*(Distance to Public Area).
1 To calculate NEW from distance d to a public area:
1, 243 ft<d ≤1,857 ft: NEW = d3/64,000
1, 857 ft<d ≤3,150 ft: NEW = 0.2162 * d 1.7331
3,150 ft<d: NEW = d3/125,000
NEW is in lbs; d is in ft.
Table E-3—Division 1.1 Intraline Distances 1 2 3
NEW (lbs) Intraline Distance (ft)
50 66
70 74
100 84
150 96
200 105
300 120
500 143
700 160
1,000 180
1,500 206
2,000 227
3,000 260
5,000 308
7,000 344
10,000 388
15,000 444
20,000 489
30,000 559
50,000 663
70,000 742
100,000 835
150,000 956
200,000 1,053
300,000 1,205
500,000 3 1,429
700,000 1,598
1,000,000 1,800
1,500,000 2,060
2,000,000 2,268
3,000,000 2,596
5,000,000 3,078
1 To calculate intraline distance d from NEW:
d = 18*NEW 1/3
NEW is in pounds; d is in feet
2 To calculate maximum NEW from given intraline distance d:
NEW = d3/5,832
NEW is in pounds; d is in feet.
3 NEW values of more than 500,000 lbs only apply to liquid propellants with TNT equivalents equal to those NEW values. The intraline distances for NEW greater than 500,000 pounds do not apply to division 1.1 explosives.
Table E-4—Division 1.3 Separation Distances
NEW (lbs) Distance to public area or public traffic route (ft) 1 Intraline distance (ft) 2
≤1000 75 50
1,500 82 56
2,000 89 61
3,000 101 68
5,000 117 80
7,000 130 88
10,000 145 98
15,000 164 112
20,000 180 122
30,000 204 138
50,000 240 163
70,000 268 181
100,000 300 204
150,000 346 234
200,000 385 260
300,000 454 303
500,000 569 372
700,000 668 428
1,000,000 800 500
1,500,000 936 577
2,000,000 1,008 630
1 To calculate distance d to a public area or traffic route from NEW:
NEW ≤1,000lbs
d= 75 ft
1,000 lbs<NEW ≤96,000 lbs
d = exp[2.47 + 0.2368*(ln(NEW)) + 0.00384*(ln(NEW))2]
96,000 lbs<NEW ≤1,000,000 lbs
d = exp[7.2297−0.5984*(ln(NEW)) + 0.04046*(ln(NEW))2]
NEW >1,000,000 lbs
d = 8*NEW 1/3
NEW is in pounds; d is in feet; exp[x] is ex; ln is natural logarithm.
To calculate NEW from distance d to a public area or traffic route (noting that d cannot be less than 75 ft):
0 ≤d <75 ft:
Not allowed (d cannot be less than 75 ft) for NEW ≤1000 lbs
75 ft ≤d≤296 ft
NEW = exp[−30.833 + (307.465 + 260.417*(ln(d)))1/2]
296 ft<d≤800 ft
NEW = exp[7.395 + (−124.002 + 24.716*(ln(d)))1/2]
800 ft<d
NEW = d3/512
NEW is in lbs; d is in ft; exp[x] is ex; ln is natural logarithm
2 To calculate intraline distance d from NEW:
NEW ≤1,000 lbs
d = 50 ft
1,000 lbs<NEW ≤84,000 lbs
d = exp[2.0325 + 0.2488*(ln(NEW)) + 0.00313* (ln(NEW))2]
84,000 lbs<NEW ≤1,000,000 lbs
d= exp[4.338−0.1695*(ln(NEW)) + 0.0221*(ln(NEW))2]
1,000,000 lbs<NEW
d = 5*NEW 1/3
NEW is in pounds; d is in feet; exp[x] is ex; ln is natural logarithm
To calculate NEW from an intraline distance d:
0 ≤d <50 ft:
Not allowed (d cannot be less than 50 ft) for NEW ≤1000 lbs
50 ft ≤d≤192 ft
NEW = exp[−39.744 + (930.257 + 319.49*(ln(d)))1/2]
192 ft<d≤500 ft
NEW = exp[3.834 + (−181.58 + 45.249*(ln(d)))1/2]
500 ft≤d
NEW = d3/125
NEW is in pounds; d is in feet; exp[x] is ex; ln is natural logarithm
Table E-5—Energetic Liquid Explosive Equivalents1 2 3
Energetic liquids TNT Equivalence TNT Equivalence
Static Test Stands Launch Pads.
LO2/LH2 See Note 3 See Note 3.
LO2/LH2 + LO2/RP-1 Sum of (see Note 3 for LO2/LH2) + (10% for LO2/RP1) Sum of (see Note 3 for LO2/LH2) + (20% for LO2/RP1).
LO2/RP-1 10% 20% up to 500,000 lbs Plus 10% over 500,000 lbs
IRFNA/UDMH 10% 10%.
N2 04/UDMH + N2 H4 5% 10%.
1 A launch site operator must use the percentage factors of table E-5 to determine TNT equivalencies of incompatible energetic liquids that are within an intraline distance of each other.
2 A launch site operator may substitute the following energetic liquids to determine TNT equivalency under this table as follows:
Alcohols or other hydrocarbon for RP-1
H2 O2 for LO2 (only when H2 O2 is in combination with RP-1 or equivalent hydrocarbon fuel)
MMH for N2 H4, UDMH, or combinations of the two.
3 TNT equivalency for LO2/LH2 is the larger of:
(a) TNT equivalency of 8*W2/3, where W is the weight of LO2/LH2 in lbs; or
(b) 14 percent of the LO2/LH2 weight.
Table E-6—Factors To Use When Converting Energetic Liquid Densities
Item Density (lb/gal) Temperature ( °F)
Ethyl alcohol 6.6 68
Hydrazine 8.4 68
Hydrogen peroxide (90 percent) 11.6 68
Liquid hydrogen 0.59 −423
Liquid oxygen 9.5 −297
Red fuming nitric acid (IRFNA) 12.9 77
RP-1 6.8 68
UDMH 6.6 68
UDMH/Hydrazine 7.5 68
Table E-7—Separation Distance Criteria for Storage of Hydrogen Peroxide in Concentrations of More than 91 Percent1 2
Quantity (lbs) Intraline distance or distance to public area or distance to public traffic route (ft)
10,000 510
15,000 592
20,000 651
30,000 746
50,000 884
70,000 989
100,000 1114
150,000 1275
200,000 1404
300,000 1607
500,000 1905
1 Multiple tanks containing hydrogen peroxide in concentrations of greater than 91 percent may be located at distances less than those required by table E-7; however, if the tanks are not separated from each other by 10 percent of the distance specified for the largest tank, then the launch site operator must use the total contents of all tanks to calculate each intraline distance and the distance to each public area and each public traffic route.
2 A launch site operator may use the equations below to determine permissible distance or quantity between the entries of table E-7:
W >10,000 lbs Distance = 24 * W1/3
Where Distance is in ft and W is in lbs.
To calculate weight of hydrogen peroxide from a distance d:
d >75 ft
W = exp[−134.286 + 71.998*(ln(d)) −12.363*(ln(d))2 + 0.7229*(ln(d))3]
Table E-8—Separation Distance Criteria for Storage of Liquid Hydrogen and Bulk Quantities of Hydrazine
Pounds of energetic liquid Pounds of energetic liquid Public area and intraline distance to incompatible energetic liquids Intraline distance to compatible energetic liquids Pounds of energetic liquid Pounds of energetic liquid Public area and intraline distance to incompatible energetic liquids Intraline distance to compatible energetic liquids
Over Not Over Distance in feet Distance in feet Over Not Over Distance in feet Distance in feet
60,000 70,000 1,200 130
100 200 600 35 70,000 80,000 1,200 130
200 300 600 40 80,000 90,000 1,200 135
300 400 600 45 90,000 100,000 1,200 135
400 500 600 50 100,000 125,000 1,800 140
500 600 600 50 125,000 150,000 1,800 145
600 700 600 55 150,000 175,000 1,800 150
700 800 600 55 175,000 200,000 1,800 155
800 900 600 60 200,000 250,000 1,800 160
900 1,000 600 60 250,000 300,000 1,800 165
1,000 2,000 600 65 300,000 350,000 1,800 170
2,000 3,000 600 70 350,000 400,000 1,800 175
3,000 4,000 600 75 400,000 450,000 1,800 180
4,000 5,000 600 80 450,000 500,000 1,800 180
5,000 6,000 600 80 500,000 600,000 1,800 185
6,000 7,000 600 85 600,000 700,000 1,800 190
7,000 8,000 600 85 700,000 800,000 1,800 195
8,000 9,000 600 90 800,000 900,000 1,800 200
9,000 10,000 600 90 900,000 1,000,000 1,800 205
10,000 15,000 1,200 95 1,000,000 2,000,000 1,800 235
15,000 20,000 1,200 100 2,000,000 3,000,000 1,800 255
20,000 25,000 1,200 105 3,000,000 4,000,000 1,800 265
25,000 30,000 1,200 110 4,000,000 5,000,000 1,800 275
30,000 35,000 1,200 110 5,000,000 6,000,000 1,800 285
35,000 40,000 1,200 115 6,000,000 7,000,000 1,800 295
40,000 45,000 1,200 120 7,000,000 8,000,000 1,800 300
45,000 50,000 1,200 120 8,000,000 9,000,000 1,800 305
50,000 60,000 1,200 125 9,000,000 10,000,000 1,800 310

Where this section sits in the code

Title 14—Aeronautics and Space
CHAPTER III—COMMERCIAL SPACE TRANSPORTATION, FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
SUBCHAPTER C—LICENSING
PART 420—LICENSE TO OPERATE A LAUNCH SITE

Table E-1—Division 1.1 Distances to a Public Area or Public Traffic Route for NEW ≤450 lbs

NEW (lbs.) Distance to public area (ft) 1 2 Distance to public traffic route distance (ft) 2

≤0.5 236 142

0.7 263 158

1 291 175

2 346 208

3 378 227

5 419 251

7 445 267

10 474 284

15 506 304

20 529 317

30 561 337

31 563 338

50 601 361

70 628 377

100 658 395

150 815 489

200 927 556

300 1085 651

450 1243 746

1 To calculate distance d to a public area from NEW:

NEW ≤0.5 lbs: d = 236

0.5 lbs <NEW <100 lbs: d = 291.3 + [79.2 *ln(NEW)]

100 lbs ≤NEW ≤450 lbs: d = −1133.9 + [389 *ln(NEW)]

NEW is in lbs; d is in ft; ln is natural logarithm.

To calculate maximum NEW given distance d (noting that d can never be less than 236 ft):

0 ≤d <236 ft: Not allowed (d cannot be less than 236 ft)

236 ft ≤d <658 ft: NEW = exp [(d/79.2)-3.678]

658 ft ≤d <1250 ft: NEW = exp [(d/389) + 2.914]

NEW is in lbs; d is in ft; exp[x] is ex.

2 The public traffic route distance is 60 percent of the distance to a public area.

Table E-2—Division 1.1 Distance to Public Area and Public Traffic Route for NEW >450 lbs

NEW (lbs) Distance to public area (ft) 1 Distance to public traffic route (ft)

450 lbs<NEW ≤30,000 lbs 1,250 750.

30,000 lbs<NEW ≤100,000 lbs 40*NEW 1/3 0.60*(Distance to Public Area).

100,000 lbs<NEW ≤250,000 lbs 2.42*NEW 0.577 0.60*(Distance to Public Area).

250,000 lbs<NEW 50*NEW 1/3 0.60*(Distance to Public Area).

1 To calculate NEW from distance d to a public area:

1, 243 ft<d ≤1,857 ft: NEW = d3/64,000

1, 857 ft<d ≤3,150 ft: NEW = 0.2162 * d 1.7331

3,150 ft<d: NEW = d3/125,000

NEW is in lbs; d is in ft.

Table E-3—Division 1.1 Intraline Distances 1 2 3

NEW (lbs) Intraline Distance (ft)

50 66

70 74

100 84

150 96

200 105

300 120

500 143

700 160

1,000 180

1,500 206

2,000 227

3,000 260

5,000 308

7,000 344

10,000 388

15,000 444

20,000 489

30,000 559

50,000 663

70,000 742

100,000 835

150,000 956

200,000 1,053

300,000 1,205

500,000 3 1,429

700,000 1,598

1,000,000 1,800

1,500,000 2,060

2,000,000 2,268

3,000,000 2,596

5,000,000 3,078

1 To calculate intraline distance d from NEW:

d = 18*NEW 1/3

NEW is in pounds; d is in feet

2 To calculate maximum NEW from given intraline distance d:

NEW = d3/5,832

NEW is in pounds; d is in feet.

3 NEW values of more than 500,000 lbs only apply to liquid propellants with TNT equivalents equal to those NEW values. The intraline distances for NEW greater than 500,000 pounds do not apply to division 1.1 explosives.

Table E-4—Division 1.3 Separation Distances

NEW (lbs) Distance to public area or public traffic route (ft) 1 Intraline distance (ft) 2

≤1000 75 50

1,500 82 56

2,000 89 61

3,000 101 68

5,000 117 80

7,000 130 88

10,000 145 98

15,000 164 112

20,000 180 122

30,000 204 138

50,000 240 163

70,000 268 181

100,000 300 204

150,000 346 234

200,000 385 260

300,000 454 303

500,000 569 372

700,000 668 428

1,000,000 800 500

1,500,000 936 577

2,000,000 1,008 630

1 To calculate distance d to a public area or traffic route from NEW:

NEW ≤1,000lbs

d= 75 ft

1,000 lbs<NEW ≤96,000 lbs

d = exp[2.47 + 0.2368*(ln(NEW)) + 0.00384*(ln(NEW))2]

96,000 lbs<NEW ≤1,000,000 lbs

d = exp[7.2297−0.5984*(ln(NEW)) + 0.04046*(ln(NEW))2]

NEW >1,000,000 lbs

d = 8*NEW 1/3

NEW is in pounds; d is in feet; exp[x] is ex; ln is natural logarithm.

To calculate NEW from distance d to a public area or traffic route (noting that d cannot be less than 75 ft):

0 ≤d <75 ft:

Not allowed (d cannot be less than 75 ft) for NEW ≤1000 lbs

75 ft ≤d≤296 ft

NEW = exp[−30.833 + (307.465 + 260.417*(ln(d)))1/2]

296 ft<d≤800 ft

NEW = exp[7.395 + (−124.002 + 24.716*(ln(d)))1/2]

800 ft<d

NEW = d3/512

NEW is in lbs; d is in ft; exp[x] is ex; ln is natural logarithm

2 To calculate intraline distance d from NEW:

NEW ≤1,000 lbs

d = 50 ft

1,000 lbs<NEW ≤84,000 lbs

d = exp[2.0325 + 0.2488*(ln(NEW)) + 0.00313* (ln(NEW))2]

84,000 lbs<NEW ≤1,000,000 lbs

d= exp[4.338−0.1695*(ln(NEW)) + 0.0221*(ln(NEW))2]

1,000,000 lbs<NEW

d = 5*NEW 1/3

NEW is in pounds; d is in feet; exp[x] is ex; ln is natural logarithm

To calculate NEW from an intraline distance d:

0 ≤d <50 ft:

Not allowed (d cannot be less than 50 ft) for NEW ≤1000 lbs

50 ft ≤d≤192 ft

NEW = exp[−39.744 + (930.257 + 319.49*(ln(d)))1/2]

192 ft<d≤500 ft

NEW = exp[3.834 + (−181.58 + 45.249*(ln(d)))1/2]

500 ft≤d

NEW = d3/125

NEW is in pounds; d is in feet; exp[x] is ex; ln is natural logarithm

Table E-5—Energetic Liquid Explosive Equivalents1 2 3

Energetic liquids TNT Equivalence TNT Equivalence

Static Test Stands Launch Pads.

LO2/LH2 See Note 3 See Note 3.

LO2/LH2 + LO2/RP-1 Sum of (see Note 3 for LO2/LH2) + (10% for LO2/RP1) Sum of (see Note 3 for LO2/LH2) + (20% for LO2/RP1).

LO2/RP-1 10% 20% up to 500,000 lbs Plus 10% over 500,000 lbs

IRFNA/UDMH 10% 10%.

N2 04/UDMH + N2 H4 5% 10%.

1 A launch site operator must use the percentage factors of table E-5 to determine TNT equivalencies of incompatible energetic liquids that are within an intraline distance of each other.

2 A launch site operator may substitute the following energetic liquids to determine TNT equivalency under this table as follows:

Alcohols or other hydrocarbon for RP-1

H2 O2 for LO2 (only when H2 O2 is in combination with RP-1 or equivalent hydrocarbon fuel)

MMH for N2 H4, UDMH, or combinations of the two.

3 TNT equivalency for LO2/LH2 is the larger of:

(a) TNT equivalency of 8*W2/3, where W is the weight of LO2/LH2 in lbs; or

(b) 14 percent of the LO2/LH2 weight.

Table E-6—Factors To Use When Converting Energetic Liquid Densities

Item Density (lb/gal) Temperature ( °F)

Ethyl alcohol 6.6 68

Hydrazine 8.4 68

Hydrogen peroxide (90 percent) 11.6 68

Liquid hydrogen 0.59 −423

Liquid oxygen 9.5 −297

Red fuming nitric acid (IRFNA) 12.9 77

RP-1 6.8 68

UDMH 6.6 68

UDMH/Hydrazine 7.5 68

Table E-7—Separation Distance Criteria for Storage of Hydrogen Peroxide in Concentrations of More than 91 Percent1 2

Quantity (lbs) Intraline distance or distance to public area or distance to public traffic route (ft)

10,000 510

15,000 592

20,000 651

30,000 746

50,000 884

70,000 989

100,000 1114

150,000 1275

200,000 1404

300,000 1607

500,000 1905

1 Multiple tanks containing hydrogen peroxide in concentrations of greater than 91 percent may be located at distances less than those required by table E-7; however, if the tanks are not separated from each other by 10 percent of the distance specified for the largest tank, then the launch site operator must use the total contents of all tanks to calculate each intraline distance and the distance to each public area and each public traffic route.

2 A launch site operator may use the equations below to determine permissible distance or quantity between the entries of table E-7:

W >10,000 lbs Distance = 24 * W1/3

Where Distance is in ft and W is in lbs.

To calculate weight of hydrogen peroxide from a distance d:

d >75 ft

W = exp[−134.286 + 71.998*(ln(d)) −12.363*(ln(d))2 + 0.7229*(ln(d))3]

Table E-8—Separation Distance Criteria for Storage of Liquid Hydrogen and Bulk Quantities of Hydrazine

Pounds of energetic liquid Pounds of energetic liquid Public area and intraline distance to incompatible energetic liquids Intraline distance to compatible energetic liquids Pounds of energetic liquid Pounds of energetic liquid Public area and intraline distance to incompatible energetic liquids Intraline distance to compatible energetic liquids

Over Not Over Distance in feet Distance in feet Over Not Over Distance in feet Distance in feet

60,000 70,000 1,200 130

100 200 600 35 70,000 80,000 1,200 130

200 300 600 40 80,000 90,000 1,200 135

300 400 600 45 90,000 100,000 1,200 135

400 500 600 50 100,000 125,000 1,800 140

500 600 600 50 125,000 150,000 1,800 145

600 700 600 55 150,000 175,000 1,800 150

700 800 600 55 175,000 200,000 1,800 155

800 900 600 60 200,000 250,000 1,800 160

900 1,000 600 60 250,000 300,000 1,800 165

1,000 2,000 600 65 300,000 350,000 1,800 170

2,000 3,000 600 70 350,000 400,000 1,800 175

3,000 4,000 600 75 400,000 450,000 1,800 180

4,000 5,000 600 80 450,000 500,000 1,800 180

5,000 6,000 600 80 500,000 600,000 1,800 185

6,000 7,000 600 85 600,000 700,000 1,800 190

7,000 8,000 600 85 700,000 800,000 1,800 195

8,000 9,000 600 90 800,000 900,000 1,800 200

9,000 10,000 600 90 900,000 1,000,000 1,800 205

10,000 15,000 1,200 95 1,000,000 2,000,000 1,800 235

15,000 20,000 1,200 100 2,000,000 3,000,000 1,800 255

20,000 25,000 1,200 105 3,000,000 4,000,000 1,800 265

25,000 30,000 1,200 110 4,000,000 5,000,000 1,800 275

30,000 35,000 1,200 110 5,000,000 6,000,000 1,800 285

35,000 40,000 1,200 115 6,000,000 7,000,000 1,800 295

40,000 45,000 1,200 120 7,000,000 8,000,000 1,800 300

45,000 50,000 1,200 120 8,000,000 9,000,000 1,800 305

50,000 60,000 1,200 125 9,000,000 10,000,000 1,800 310

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