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Arizona Administrative Code (Last Updated: November 17, 2016) |
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Title 11. MINES |
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Chapter 1. STATE MINE INSPECTOR |
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Article 2. EXPLOSIVES AND BLASTING |
Section R11-1-264. Surface storage of materials
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A. Unmixed materials:
1. Unmixed ammonium nitrate shall be kept in a clean, well-ventilated building or bin, using good warehouse practice. Floor drains into which molten nitrate could run during a fire should be eliminated. Bagged ammonium nitrate shall not be stacked close to any source of heat which might ignite the combustible material of the bags. Bulk ammonium nitrate shall be stored in clean, dry bins. When stored in warehouses, it shall be stored on dry, clean floors which are of noncombustible construction which is protected against impregnation with ammonium nitrate. Warehouses or other storage facilities shall have adequate ventilation or be of construction that will be self- ventilating to permit escape of products of decompo- sition and heat in the event of fire.
2. Ammonium nitrate shall not be stored with or near flam- mable liquids, corrosive acid, chlorates, nitrates, perman- ganates, sulphur, or finely divided metals.
3. When unmixed ammonium nitrate is stored with blasting agents or high explosives in a high-explosive magazine, one-half the quantity of unmixed ammonium nitrate shall be taken into consideration in computing the total quan- tity in warehouse or magazine for compliance with the American Table of Distances.
4. Spilled ammonium nitrate shall be cleaned up promptly and removed safely.
5. Dynamite or other explosives shall not be used to break up caked ammonium nitrate.
6. Fuses and igniters shall be stored in a cool, dry place away from oils or grease.
B. Mixed materials (without explosives):
1. Permanent storage of blasting agents shall be in a fire- and weather-resistant, well-ventilated, magazine or ware- house. Temporary storage may be in vans, truck trailers, railroad cars, etc.
2. The location of magazine or warehouse shall comply with the American Table of Distances.
3. Interior of storage buildings shall be kept clean and be maintained in good housekeeping order.
4. Blasting agents shall not be stored with flammable liq- uids, corrosive acids, chlorates, nitrates, permanganates, sulphur or finely divided metals.
C. Mixed materials (with explosives): All rules and regulations that apply to the storage of explosives shall apply to the stor- age of blasting agents when stored with explosives.