34 Pa. Code § 5.122 - Tables of quantity and distance

(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.

Notes

34 Pa. Code § 5.122

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).