HAZMAT Class 1 Explosives

Hazmat Class 1 are explosive materials which are any substance or article, including a device, which is designed to function by explosion or which, by chemical reaction within itself is able to function in a similar manner even if not designed to function by explosion.^[a]

Class 1 consists of six 'divisions', that describes the potential hazard posed by the explosive. The division number is the second number after the decimal point on a placard.^[b] The classification has an additional layer, of categorization, known as 'compatibility groups', which breaks explosives in the same division into one of 13 groups, identified by a letter, which is used to separate incompatible explosives from each other. This letter also appears on the placard, following the number.^[c]

The movement of class 1 materials is tightly regulated, especially for divisions 1.1 and 1.2, which represent some of the most dangerous explosives, with the greatest potential for destruction and loss of life. Regulations in the United States require drivers have and follow a pre-prepared route, not park the vehicle within 300 feet (91 m) of bridges, tunnels, a fire, or crowded places.^[1] The vehicle must be attended to by its driver at all times while its parked. Drivers are also required to carry the following paperwork and keep it in an accessible and easy to locate location: written emergency instructions, written route plan, a copy of Federal Motor Carrier Safety Regulations, Part 397 - Transport of Hazardous Materials; driving and parking rules. ^[2] Some tunnels and bridges severely restrict or completely forbid vehicles carrying Class 1 cargoes.^[3]^[4]

Divisions

Placards

Division number	Risk	Examples
(N/A)	Basic placard for explosive materials - Division not specified	Anything listed below
1.1	Mass explosion risk	Dynamite, Trinitrotoluene (TNT), ANFO (ammonium nitrate/fuel oil)
1.2	Blast and Projection risk	Hand grenades
1.3	Minor blast risk	Display/commercial grade fireworks, rocket propellant
1.4	Major fire risk	Consumer fireworks, ammunition, railway fog signals (detonators/torpedo),^[5] model rocket motors^[6]
1.5	Blasting agents	Type E water emulsion blasting agents
1.6	Extremely insensitive explosives	^{[examples needed]}

Compatibility table

Transportation segregation table

Template:Transport segregation table for HAZMAT class 1 materials

Compatibility group table

Template:Compatibility Table for HAZMAT Class 1 Materials

Notes

^ In the United States, an article that meets this guideline, might be otherwise classed in a different class under a provision of Title 49 of the Code of Federal Regulations.
^ Example: A division 1 explosive is shown as "1.1" on the placard.
^ Most diagrams of placards, including the ones in this article, represent the compatibility group letter with an asterisk ( * ) as a placeholder.

References

^ Pennsylvania Department of Transportation (March 2017). "Commercial Driver's Manual - PUB 223" (PDF). pp. 9:11-9:26. Archived from the original (PDF) on 27 March 2017. Retrieved 20 July 2019.
^ United States Department of Transportation (June 6, 2019). "PART 397—TRANSPORTATION OF HAZARDOUS MATERIALS; DRIVING AND PARKING RULES". eCFR. Archived from the original on 10 June 2019. Retrieved 20 July 2019.
^ Pennsylvania Turnpike. "Placarded Loads". Archived from the original on 30 March 2019. Retrieved 20 July 2019. All Table 1 Materials and All Explosives are prohibited.
^ Port Authority of New York and New Jersey. "Hazardous Materials - Transportation Regulations at Tunnel and Bridge Facilities -" (PDF). Archived from the original (PDF) on 10 June 2019. Retrieved 20 July 2019.
^ Clayton Penistone Group (25 April 2016). "Safety Data Sheet - Railway Fog Signal". Archived from the original (English) on 21 November 2016. Retrieved 16 July 2019.
^ Estes Industries (23 October 2014). "Safety Data Sheet - Model Rocket Motor" (PDF). Retrieved 16 July 2019.

[1] In the United States, an article that meets this guideline, might be otherwise classed in a different class under a provision of Title 49 of the Code of Federal Regulations.

[2] Example: A division 1 explosive is shown as "1.1" on the placard.

[3] Most diagrams of placards, including the ones in this article, represent the compatibility group letter with an asterisk ( * ) as a placeholder.

[PennDOT_CDL-4] Pennsylvania Department of Transportation (March 2017). "Commercial Driver's Manual - PUB 223" (PDF). pp. 9:11-9:26. Archived from the original (PDF) on 27 March 2017. Retrieved 20 July 2019.

[FMCSA_Part_397-5] United States Department of Transportation (June 6, 2019). "PART 397—TRANSPORTATION OF HAZARDOUS MATERIALS; DRIVING AND PARKING RULES". eCFR. Archived from the original on 10 June 2019. Retrieved 20 July 2019.

[PA_Turnpike_Placard_Rules-6] Pennsylvania Turnpike. "Placarded Loads". Archived from the original on 30 March 2019. Retrieved 20 July 2019. All Table 1 Materials and All Explosives are prohibited.

[Port_Authority_-_Tunnel_Bridges-7] Port Authority of New York and New Jersey. "Hazardous Materials - Transportation Regulations at Tunnel and Bridge Facilities -" (PDF). Archived from the original (PDF) on 10 June 2019. Retrieved 20 July 2019.

[SDS_-_Railway_Fog_Signal-8] Clayton Penistone Group (25 April 2016). "Safety Data Sheet - Railway Fog Signal". Archived from the original (English) on 21 November 2016. Retrieved 16 July 2019.

[Model_Rocket_Motor-9] Estes Industries (23 October 2014). "Safety Data Sheet - Model Rocket Motor" (PDF). Retrieved 16 July 2019.

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v t e Hazardous materials
List of accidents	Accidents involving transport or storage of ammunition Accidents involving ammonium nitrate Accidents involving fireworks Accidents involving pipelines List of accidents involving natural gas and oil production
Dangerous cargo classes	HAZMAT Class 1 Explosives HAZMAT Class 2 Gases HAZMAT Class 3 Flammable liquids HAZMAT Class 4 Flammable solids HAZMAT Class 5 Oxidizing agents and organic peroxides HAZMAT Class 6 Toxic and infectious substances HAZMAT Class 7 Radioactive substances HAZMAT Class 8 Corrosive substances HAZMAT Class 9 Miscellaneous
Hazardous materials laws and regulations	AIR Shipper Australian Dangerous Goods Code European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR) Hazardous Materials Transportation Act Hazardous Substances and New Organisms Act 1996 HAZWOPER Hong Kong ship laws Midwest hazardous work training NA/UN exceptions Safe handling of carcinogens UN Recommendations on the Transport of Dangerous Goods US Committee on Hazardous Materials
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