What is the minimum unobstructed access width that must be provided on all sides of a boiler?

The minimum unobstructed access width that must be provided on all sides of a boiler is 30 inches. This requirement is established to ensure safe and adequate access for operation, maintenance, and inspections. A width of 30 inches allows enough room for personnel to navigate easily around the boiler, which is crucial for tasks such as servicing, troubleshooting, and responding to emergencies.

This standard is particularly important in industrial and commercial settings, where boilers can be large and complex. A greater access width not only facilitates maintenance but also reduces the risk of accidents and enhances overall safety for workers. It ensures that there is enough spacing to handle equipment and tools without obstruction, which can be critical when performing repairs or inspections.

Therefore, while other options propose varying widths, 30 inches has been determined as the minimum requirement to promote safety and operational efficiency in relation to boiler maintenance and access.