Section 200.APPENDIX C Table of Separation Distances of Ammonium Nitrate and Blasting Agents From Explosives or Blasting Agents¹

Donor weight		Minimum separation distance of receptor when barricaded² (ft.)		Minimum thickness of artificial barricades⁵ (in.)
Pounds over	Pounds not over	Ammonium nitrate³	Blasting agent⁴	Minimum thickness of artificial barricades⁵ (in.)
.001	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	43	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

NOTES TO TABLE OF RECOMMENDED SEPARATION DISTANCES

OF AMMONIUM NITRATE AND BLASTING AGENTS

FROM EXPLOSIVES OR BLASTING AGENTS

NOTE 1 − Recommended separation distances to prevent explosion of ammonium nitrate and ammonium nitrate‑based blasting agents by propagation from nearby stores of high explosives or blasting agents referred to in the Table as the "donor". Ammonium nitrate, by itself, is not considered to be a donor when applying this Table. Ammonium nitrate, ammonium nitrate‑fuel oil or combinations 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 is to be included in the mass of the donor.

NOTE 2 − When the ammonium nitrate and/or blasting agent is not barricaded, the distances shown in the Table 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. When storage is in bullet‑resistant magazines recommended for explosives or when the storage is protected by a bullet‑resistant wall, distances and barricade thicknesses in excess of those prescribed in the American Table of Distances (Appendix A) are not required.

NOTE 3 − The distances in the Table apply to ammonium nitrate that passes the insensitivity test prescribed in the definition of ammonium nitrate fertilizer promulgated by the Fertilizer Institute and ammonium nitrate failing to pass the test shall be stored at separation distances determined by competent persons and approved by the authority having jurisdiction.

NOTE 4 − These distances apply to blasting agents that pass the insensitivity test prescribed in regulations of USDOT and ATF.

NOTE 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 exposures that require protection cannot be seen from the donor when the trees are bare of leaves, are also acceptable.

NOTE 6 − For determining the distances to be maintained from inhabited buildings, passenger railways and public highways, use the American Table of Distances for Storage of Explosive Materials (Appendix A).

(Source: Amended at 48 Ill. Reg. 9600, effective June 24, 2024)