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Where an operating building on an explosive materials plant site is designed to contain explosive materials, such a building shall be located away from inhabited buildings, public traffic routes and magazines in accordance with Table 5604.5.2(2) or 5604.5.2(3) as appropriate, based on the maximum quantity of explosive materials permitted to be in the building at one time (see Section 5601.8).
Exception: Fireworks manufacturing buildings constructed and operated in accordance with NFPA 1124.
5605.4.1 Determination of Net Explosive Weight for Operating Buildings
In addition to the requirements of Section 5601.8 to determine the net explosive weight for materials stored or used in operating buildings, quantities of explosive materials stored in magazines located at distances less than intraline distances from the operating building shall be added to the contents of the operating building to determine the net explosive weight for the operating building.
5605.4.1.1 Indoor Magazines
The storage of explosive materials located in indoor magazines in operating buildings shall be limited to a net explosive weight not to exceed 50 pounds (23 kg).
5605.4.1.2 Outdoor Magazines With a Net Explosive Weight Less Than 50 Pounds
The storage of explosive materials in outdoor magazines located at less than intraline distances from operating buildings shall be limited to a net explosive weight not to exceed 50 pounds (23 kg).
5605.4.1.3 Outdoor Magazines With a Net Explosive Weight Greater Than 50 Pounds
The storage of explosive materials in outdoor magazines in quantities exceeding 50 pounds (23 kg) net explosive weight shall be limited to storage in outdoor magazines located not less than intraline distances from the operating building in accordance with Section 5604.5.2.
5605.4.1.4 Net Explosive Weight of Materials Stored in Combination Indoor and Outdoor Magazines
The aggregate quantity of explosive materials stored in any combination of indoor magazines or outdoor magazines located at less than the intraline distances from an operating building shall not exceed 50 pounds (23 kg).

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