In relation to hot work, what is the maximum allowable concentration of methane as per the SHMS provisions?

The maximum allowable concentration of methane in relation to hot work, according to the Safety and Health Management System (SHMS) provisions in Queensland mining regulations, is established to ensure the safety of workers and to mitigate the risk of explosive atmospheres. Specifically, a concentration of 0.5% by volume is the threshold that indicates when the atmosphere may be deemed hazardous during such activities.

This limit is critical because concentrations at or above this level can significantly increase the risk of combustion or explosion when hot work is performed, as the ignition sources could ignite the methane present. Regulations are vigilant about maintaining this limit within controlled environments to protect mine workers and prevent potential incidents that could arise from uncontrolled methane emissions, especially during activities involving open flames or sparks produced during hot work.

Understanding this limit is vital for anyone involved in mining operations, as it directly relates to the health and safety standards that must be adhered to prevent accidents and ensure compliance with regulatory requirements.