What are the divisions of Class 1 explosives?
Division 1.1: Substances and articles which have a mass explosion hazard. Division 1.2: Substances and articles which have a projection hazard but not a mass explosion hazard. Division 1.3: Substances and articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both.
When transporting substances that are considered an explosion hazard, the importance of Labelmaster's Hazard Class 1 Labels cannot be understated. Examples of explosives include ammunition, fireworks, flares, primers, ignitors and air bag inflators.
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.
Class I Locations A “Class I Location” is created by the presence of flammable gases or vapors in the air in sufficient quantities to be explosive or ignitable. When these materials are found in the atmosphere, a potential for explosion exists if an electrical or other source of ignition is present.
If transporting Division 1.1, 1.2 or 1.3 (Class A or Class B) explosives, you must have a written route plan and follow that plan. Carriers prepare the route plan in advance and give the driver a copy. You may plan the route yourself if you pick up the explosives at a location other than your employer's terminal.
Good examples of Class I, Division 1 locations would be the areas near open dome loading facilities or adjacent to relief valves in a petroleum refinery, because the hazardous material would be present during normal plant operations.
Consumer fireworks are considered hazardous materials (hazmat) Division 1.4G explosives, and their safe transport is regulated by the Hazardous Materials Regulations (HMR) (see 49 Code of Federal Regulations (CFR) Parts 171-180).
Schedule I drugs, substances, or chemicals are defined as drugs with no currently accepted medical use and a high potential for abuse. Some examples of Schedule I drugs are: heroin, lysergic acid diethylamide (LSD), marijuana (cannabis), 3,4-methylenedioxymethamphetamine (ecstasy), methaqualone, and peyote.
Division 1.4 consists of explosives that present a minor blast hazard. Examples are common fireworks, toy caps, empty primed grenades, and some small arms ammunition.
Class I, Division 1 classified locations. An area where ignitable concentrations of flammable gases, vapors or liquids can exist all of the time or some of the time under normal operating conditions. A Class I, Division 1 area encompasses the combination of Zone 0 and Zone 1 areas.
What is Class 1 Division 1 hazardous?
Class I locations are those in which inflammable gases or vapors are or may be present in sufficient quantities to produce explosive or flammable mixtures. Class I, Division 1 locations are where hazardous atmosphere may be present during normal operations.
Division defines the likelihood of the hazardous material being present in an explosive or ignitable concentration. Class I flammable gases and vapors are grouped into one of four groups (Groups A, B, C or D) based on their physical properties and the ease in which they can be ignited.
Class 1, Explosives:
An explosive is any substance or article, including a device or pyrotechnic substance, which is designed to function by explosion (i.e., an extremely rapid release of gas and heat) or which, by chemical reaction within itself, is able to rapidly conflagrate or detonate.
For example, a Class I Division 1 fixture is designed to contain an explosion within the fixture should the internal components start one. External heat from the environment or location where the light is located will not cause an explosion nor will the light's housing allow a spark or arc to start an ignition.
Class I Locations: Are those in which flammable gases or vapors are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures. Class II Locations: Are those which are hazardous due to the presence of combustible dust.
§ 397.5 Attendance and surveillance of motor vehicles.
(c) A motor vehicle which contains hazardous materials other than Division 1.1, 1.2, or 1.3, materials, and which is located on a public street or highway, or the shoulder of a public highway, must be attended by its driver.
The purpose of assigning compatibility groups is to prohibit their proximity to each other in transport and storage incidental to transport. 6. In the context of explosives, the term “compatibility” is a synonym for segregation within Class 1.
Carriers must give each driver who transport Explosives 1.1 or 1.2: A copy of FMCS part 397. If a hazardous material is spilling from your vehicle, you may move your vehicle off the road: No more than safety requires.
To summarize. Class 1 Hazardous Locations refer to facilities that deal with flammable gases, vapors, and liquids. Division 2 specifies that flammable materials are handled, processed, or used at a location.
Class 1 Div 1 locations have a higher likelihood of flammable substances being present during normal operations, while Class 1 Div 2 locations pose a with lower risk, Substances potentially present only under abnormal conditions.
What are class 1 div 2 zones?
Division 2 – a Class I location in which volatile flammable liquids or gases are handled, processed or used but in which they would normally be confined within closed containers or closed systems from which they can escape only in the event of an accidental rupture or breakdown of the containers or systems.
CLASS 1 Explosives
* For Divisions 1.1, 1.2, or 1.3, enter division number and compatibility group letter, when required; placard any quantity.
explosive, any substance or device that can be made to produce a volume of rapidly expanding gas in an extremely brief period. There are three fundamental types: mechanical, nuclear, and chemical.
Black powder is a low explosive material comprised of potassium nitrate (saltpeter), sulfur and charcoal. While used as a propellant in fireworks and pyrotechnics, it is also used in some ammunition and muzzleloaders.
CLASS 2 - Gases. 2.1 Flammable Gases. Commonly used as fuel (example: propane).
division 1.1 consists of explosives that have a mass explosion hazard. A mass explosion is one that affects nearly the entire load instantaneously. division 1.3g (if the major hazard is radiant heat or violent burning, or both, but there is no blast or projection hazard) fireworks un0335 (display).
Category 1 shall include liquids having flashpoints below 73.4 °F (23 °C) and having a boiling point at or below 95 °F (35 °C). 2.
Class I, Division 2 – Where ignitable concentrations of flammable gases, vapors, or liquids are present within the atmosphere under abnormal operating conditions. Class II, Division 1 – Where ignitable concentrations of combustible dusts are present within the atmosphere under normal operation conditions.
Hazard Class 1 Explosives & Blasting Agents (1.4S) DOT Placard MPL133.
The Differences Between NCAA Divisions. If you want to know all about the NCAA divisions, you've come to the right place. According to the NCAA, there are 363 Division 1 schools, 313 Division 2 schools, and 442 Division 3 schools.
What is Class 1 Division 1 Group D?
1. Hazardous Locations. Class I Group D locations are atmospheres containing elements such as Gasoline, Hexane, Naphtha, Benzine, Butane, Propane, Alcohol, Acetone, Benzol, Lacquer Solvent Vapors or Natural Gas.
While Division 1 motors in Class I locations must be explosion-proof, Class II, Division 1 motors must be dust- ignition-proof. The characteristics of dust-ignition-proof motors differ from those of their Class I counterparts.
division 1.1 consists of explosives that have a mass explosion hazard. A mass explosion is one that affects nearly the entire load instantaneously. division 1.3g (if the major hazard is radiant heat or violent burning, or both, but there is no blast or projection hazard) fireworks un0335 (display).
| Class 1 | Explosives |
|---|---|
| Division 1.1 | Explosives with a mass explosion hazard |
| Division 1.2 | Explosives with a projection hazard |
| Division 1.3 | Explosives with predominantly a fire hazard |
| Division 1.4 | Explosives with no significant blast hazard |
For example, a Class I Division 1 fixture is designed to contain an explosion within the fixture should the internal components start one. External heat from the environment or location where the light is located will not cause an explosion nor will the light's housing allow a spark or arc to start an ignition.
Class I, Division 2 – Where ignitable concentrations of flammable gases, vapors, or liquids are present within the atmosphere under abnormal operating conditions. Class II, Division 1 – Where ignitable concentrations of combustible dusts are present within the atmosphere under normal operation conditions.
| Category of material (Hazard class or division number and additional description, as appropriate) | Placard name | Placard design section reference (§ ) |
|---|---|---|
| 1.1 | EXPLOSIVES 1.1 | 172.522 |
| 1.2 | EXPLOSIVES 1.2 | 172.522 |
| 1.3 | EXPLOSIVES 1.3 | 172.522 |
| 2.3 | POISON GAS | 172.540 |
