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The symbol within the pictogram is a gas cylinder. This symbol indicates that hazardous products with this pictogram are gases that are contained in a receptacle under pressure, or which are liquefied or liquefied and refrigerated. The hazards presented by these products are related to the high pressure or cold temperatures.
Hazardous products with this pictogram can be safely worked with if proper storage and handling practices are followed.
This pictogram is used by one hazard class in the physical hazards group - Gases under pressure. There are four hazard categories in this hazard class:
The WHMIS 2015 signal words and hazard statements for the hazard class and categories assigned this pictogram are:
|Hazard Class and Category||Signal Word||Hazard Statement|
|Gases under pressure – Compressed gas||Warning||Contains gas under pressure; may explode if heated.|
|Gases under pressure – Liquefied gas||Warning||Contains gas under pressure; may explode if heated.|
|Gases under pressure – Refrigerated liquefied gas||Warning||Contains refrigerated gas; may cause cryogenic burns or injury.|
|Gases under pressure – Dissolved gas||Warning||Contains gas under pressure; may explode if heated.|
Gases under pressure can release large amounts of gas into the workplace air very quickly which could result in health and/or fire hazards depending on the properties of the gas. The gas can be released deliberately by opening the cylinder valve, or accidentally from a broken or leaking valve.
If damaged, gas cylinders can rocket or spin out of control with great force which is capable of causing significant injury and damage. These incidents are often caused when an uncapped or unsecured cylinder has been knocked over and a cylinder valve breaks.
The cryogenic burns or other freezing (frostbite) injuries are associated with refrigerated liquefied gases because these gases are extremely cold.
In addition to the specific hazards identified by the gas cylinder pictogram, it is important to remember that the product may have other hazards, for example: