What is the minimum size and type of fire extinguisher required by ASME for cranes?

The minimum size and type of fire extinguisher required by ASME for cranes is a 10 BC extinguisher. This specific rating indicates that the extinguisher is suitable for class B and C fires—class B fires involve flammable liquids such as oil, gasoline, and grease, while class C fires involve electrical equipment. Cranes often operate in environments where these types of hazards may be present, thus necessitating an appropriate fire extinguisher. The 10 BC rating means that the extinguisher has a certain amount of firefighting effectiveness, making it a necessary safety requirement in ensuring the safety of personnel and equipment on-site.

Choosing a fire extinguisher with a lower rating may not provide sufficient protection against the potential fire hazards encountered in crane operations, while a higher rating may not be as practical considering weight and maneuverability concerns. This balance is why the 10 BC fire extinguisher is designated as the minimum size and type by ASME for cranes.