Why is it recommended to round up the number of negative air machines?

Rounding up the number of negative air machines during an asbestos abatement project is primarily recommended to ensure there is sufficient air movement. Negative air machines are essential for controlling airborne asbestos fibers and maintaining a safe environment for both workers and surrounding areas. Adequate air movement helps in effectively containing and filtering dust and fibers, thus preventing cross-contamination and exposure to hazardous materials.

By ensuring that there are more than enough negative air machines in place, any unforeseen circumstances—such as increased dust generation or malfunctioning equipment—are accounted for, enhancing the overall safety and compliance during abatement work. Proper air management is critical for maintaining negative pressure within containment areas, ensuring that any potentially harmful particles are effectively filtered out before they can escape into the environment.