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| Ordnance Hazard Classification
Safety requirements for non-explosive actuators, ordnance devices, and circuits specific for NASA ELV payloads are provided in this publication.
Note: For purposes of these requirements the term ordnance items is meant to include non-explosive actuator such as, paraffin actuators, phase change devices, and others as determined by the PSWG and Range Safety.
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13.1.1. Ordnance General Classification
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13.1.1.1. Ordnance items shall be assigned the appropriate DoD and United Nations Organization (UNO) hazard classification for transport of dangerous goods and storage compatibility group in accordance with ST/SG/AC.10/1, Recommendations on the Transport of Dangerous Goods Model Regulations, and in accordance with DoD 6055.9-STD.
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13.1.1.2. Items that have not previously been classified and cannot be classified based on similarity with previously classified items shall obtain a hazard classification in accordance with the procedures required by 49 CFR 173.56, New Explosives – Definitions and Procedures for Classification and Approval, and AFTO 11A-1-47/(NAVSEAINST 8020.3/TB700-2/DLAR 8220.1), Explosive Hazard Classification Procedures, and classified accordingly.
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13.1.1.3. Ordnance items shall also have a DOT classification. The payload project is responsible for obtaining DOT classification.
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13.1.1.4. The payload project shall provide the UNO, DoD, and DOT documentation demonstrating proper classification for review and approval before delivering ordnance.
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13.1.2. Ordnance Device and System Categorization
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13.1.2.1. Ordnance Device and System Categorization Process and Submittals
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13.1.2.1.1. A FMECA shall be performed to determine if each ordnance device and system, including non-explosive initiators (NEIs), shall be classified as category A (hazardous) or B (non-hazardous).
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13.1.2.1.2. A device shall be assigned Category A whenever test data to the contrary is not available. A device assigned Category A prior to installation may be downgraded to Category B after installation if the effects of the device and the subsequent chain of events are controlled to the satisfaction of the PSWG and Range Safety.
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13.1.2.1.3. The payload project shall submit ordnance devices’, NEIs’, and systems’ proposed classifications to the PSWG for PSWG, Range Safety and appropriate local safety authority review and approval before delivering ordnance to the payload processing facility and launch site area.
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Electroexplosive device (EED) Categories are based on the effects of inadvertent initiation.
Category A: Category A electroexplosive devices or ordnance that, by the expenditure of their own energy or because they initiate a chain of events, may cause serious injury or death to personnel or damage to property.
Category B: Category B electroexplosive devices or ordnance that, by the expenditure of their own energy or because they initiate a chain of events, will not cause serious injury or death to personnel or damage to property.
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13.1.2.2. The following criteria shall be used to determine ordnance device and system hazard category:
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13.1.2.2.1. Handheld Mode
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13.1.2.2.1.1. At least 1 percent of an ordnance item qualification lot or a minimum of 10 units shall be functioned to determine if the ordnance produces fragments, if the temperature rises above 260oC, if the ordnance produces flame, or if the ordnance produces pressure in excess of 150 psig at the output end. If testing or analogy is not accomplished, the initiating device shall be treated as category A.
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It is not the intention of this publication to impose excessive test requirements. Similarities with previously tested items are often sufficient for categorization.
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13.1.2.2.1.2. If one or more of the tested units violate the criteria, the ordnance shall be considered category A in the handheld mode.
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13.1.2.2.2. Assembled Mode
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13.1.2.2.2.1. An analysis of the ordnance system shall be performed to determine if its initiation is capable of causing injury or damage to property at the payload processing facility and launch site area.
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13.1.2.2.2.2. Tests will not be required for the assembled mode.
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