Dangerous Goods are grouped in nine classes, according to common dangers. All classes, except infectious substances (Class 6.2) and radioactive substances (Class 7), are controlled by the Dangerous Goods Act 1985.
Each class has a distinctive diamond-shaped symbol with the class number at the bottom of the diamond. These symbols appear on the labels of containers and as signs on vehicle loads. The internationally recognised symbols clearly identify the type of substance and the main danger.
Class Diamond System | ||
Symbol | Class | Main Danger |
1 | Substances or articles used to produce explosions. | |
2.1 | Can ignite in air on contact with a source of ignition. | |
2.2 | Non flammable and non toxic, but may cause suffocation. | |
2.3 | Likely to cause death or serious injury if inhaled. | |
3 | Vapours from these liquids can ignite in air on contact with a source of ignition. | |
4.1 | Easily ignited by external sources, such as sparks and flames. | |
4.2 | Likely to heat spontaneously and ignite. | |
4.3 | Produce dangerous quantities of flammable or toxic gases when in contact with water. The heat from this reaction may cause these gases to spontaneously ignite. | |
5.1 | Not necessarily combustible by themselves, but may yeild oxygen which increases the risk and intensity of fire in other materials with which they come into contact. | |
5.2 | Thermally unstable and likely to react dangerously with other substances. | |
6 | Likely to cause death or serious injury if swallowed, inhaled or brought into contact with skin. | |
7 | Materials or combinations of materials that emit harmful radiation. | |
8 | Solids or liquids that can damage living tissue, and may react with many other materials. | |
9 | Substances and articles that present a danger and not covered by other classes. | |
Mixed Class Label (for road transport) | ||
Tidak ada komentar:
Posting Komentar