Pennsylvania Code › Title 34 - LABOR AND INDUSTRY › Part I - Department of Labor and Industry › Chapter 5 - BLASTING, DEMOLITION, FIREWORKS AND EXPLOSIVES › Subchapter D - EXPLOSIVES › GENERAL PRECAUTIONS: EXPLOSIVES › Section 5.122 - Tables of quantity and distance

Current through Register Vol. 54, No. 28, July 13, 2024
(a) Buildings and magazines in which
					 explosives are kept in explosives plants shall be located at distances from
					 buildings which are regularly occupied in whole or in part as a habitation for
					 human beings, or any church, schoolhouse, railroad station, store, or other
					 building where people assemble, or railroads which carry passengers for hire,
					 or from public highways, in conformity with the following table:
Quantity and Distance Table
Quantity Which May be kept or
								  Stored
Distance
Distance
Distance
From
From
From
Blasting &
								  Electric
Other
								  Explosives
Nearest
Nearest
Nearest
Blasting
								  Caps
(in
								  pounds)
Building
Railway
Highway
(in
								  pounds)
(in
								  feet)
(in feet)
(in
								  feet)
1,000-5,000
30
20
10
5,000-10,000
60
40
20
10,000-20,000
120
70
35
20,000-25,000
0-50
145
90
45
25,000-50,000
50-100
240
140
70
50,000-100,000
100-200
360
220
110
100,000-150,000
200-300
520
310
150
150,000-200,000
300-400
640
380
190
200,000-250,000
400-500
720
430
220
250,000-300,000
500-600
800
480
240
300,000-350,000
600-700
860
520
310
350,000-400,000
700-800
920
550
280
400,000-450,000
800-900
980
590
300
450,000-500,000
900-1,000
1,020
610
310
500,000-750,000
1,000-1,500
1,060
640
320
750,000-1,000,000
1,500-2,000
1,200
720
360
1,000,000-1,500,000
2,000-3,000
1,300
780
390
1,500,000-2,000,000
3,000-4,000
1,420
850
420
2,000,000-2,500,000
4,000-5,000
1,500
900
450
2,500,000-3,000,000
5,000-6,000
1,560
940
470
3,000,000-3,500,000
6,000-7,000
1,610
970
490
3,500,000-4,000,000
7,000-8,000
1,660
1,000
500
4,000,000-4,500,000
8,000-9,000
1,700
1,020
510
4,500,000-5,000,000
9,000-10,000
1,740
1,040
520
5,000,000-7,500,000
10,000-15,000
1,780
1,070
530
7,500,000-10,000,000
15,000-20,000
1,950
1,170
580
10,000,000-12,500,000
20,000-25,000
2,110
1,270
630
12,500,000-15,000,000
25,000-30,000
2,260
1,360
680
15,000,000-17,500,000
30,000-35,000
2,410
1,450
720
17,500,000-20,000,000
35,000-40,000
2,550
1,530
760
40,000-45,000
2,680
1,610
800
45,000-50,000
2,800
1,680
840
50,000-55,000
2,920
1,750
880
55,000-60,000
3,030
1,820
910
60,000-65,000
3,130
1,880
940
65,000-70,000
3,220
1,940
970
70,000-75,000
3,310
1,990
1,000
75,000-80,000
3,390
2,040
1,020
80,000-85,000
3,460
2,080
1,040
85,000-90,000
3,520
2,120
1,060
90,000-95,000
3,580
2,150
1,080
95,000-100,000
3,630
2,180
1,090
100,000-125,000
3,670
2,200
1,100
125,000-150,000
3,800
2,280
1,140
150,000-175,000
3,930
2,360
1,180
175,000-200,000
4,060
2,440
1,220
200,000-225,000
4,190
2,520
1,260
225,000-250,000
4,310
2,590
1,300
250,000-275,000
4,430
2,660
1,340
275,000-300,000
4,550
2,730
1,380
(b) Factory buildings in which explosives are
					 kept shall be separated from each other, and from other buildings in explosives
					 plants in which persons are regularly employed, and all magazines shall be
					 located from factory buildings and buildings on explosives plants in which
					 persons are regularly employed, in conformity with the Intraplant Quantity and
					 Distance Table set forth in §
											5.62 (relating to
					 location).
(c) Magazines in which
					 more than 50 pounds of explosives are kept shall be detached from other
					 structures. Magazines where more than 5,000 pounds of explosives are kept shall
					 be located at least 200 feet from any other magazine, except cap magazines.
					 Magazines where quantities of explosives over 25,000 pounds are kept shall have
					 an increase over 200 feet of 2 2/3 feet for each 1,000 pounds of explosives in
					 excess of 25,000 pounds stored therein; these distances between magazines may
					 be disregarded where the total quantity stored in the magazines complies with
					 the Quantity and Distance Table set forth in subsection (a). In all cases, the
					 quantity of explosives contained in cap magazines shall govern in regard to
					 spacing such magazines from magazines containing other explosives, but under no
					 circumstances shall a magazine containing blasting caps be within less than 100
					 feet, unbarricaded, or 50 feet, barricaded, from any magazine other than a cap
					 magazine.
(d) Whenever a factory
					 building or magazine is effectively screened from another explosives plant
					 building or magazine, building, railroad or highway, by natural features of the
					 ground or by efficient artificial barricade of such height that any straight
					 line drawn from the top of any sidewall of the factory building or magazine to
					 any part of the explosives plant building, magazine or building to be protected
					 will pass through such intervening natural or efficient artificial barricade,
					 and any straight line drawn from the top of any sidewall of the factory
					 building or magazine to any point 12 feet above the center of the railroad or
					 highway to be protected will pass through such intervening natural or
					 artificial barricade, 1/2 the distances prescribed by the Quantity and Distance
					 Table in this section, the Intraplant Quantity and Distance Table set forth in
					 §
											5.62 (relating to location), and
					 the distances separating magazines, may be deemed applicable.
(e) The tables described in subsections (a)
					 and (b) also apply to new construction or replacement.
This section cited in 34 Pa. Code §
													5.111 (relating to storage of
						  explosive material); 34 Pa. Code §
													5.191 (relating to distance
						  limitations); and 34 Pa. Code §
													11.43 (relating to employment near
						  explosives).