According to ASME B30.5, when must an audible emergency signal be agreed upon?

The requirement for an audible emergency signal to be agreed upon at each job site location is essential for ensuring safety and effective communication among all personnel involved in lifting operations. This agreement is vital because it ensures that every worker on site understands the specific signal that will be used in an emergency situation, which may differ from one job site to another.

Having this signal established at each location helps to prevent confusion and ensures that all workers, regardless of their experience level or familiarity with the site, can respond swiftly and appropriately in the event of an emergency. It reinforces the idea that safety protocols must be tailored to the specific conditions and personnel present at each job site, addressing unique challenges that may arise during operations.

This practice aligns with the overarching goal of minimizing risks and enhancing safety in lifting operations. By clarifying and agreeing on emergency signals ahead of time, sites can improve their overall preparedness for unexpected situations.