Prior to qualifying all signal persons, they must be tested by whom according to ASME B30.5?

The requirement for signal persons to be tested by a designated person, as outlined in ASME B30.5, emphasizes the importance of ensuring that individuals responsible for signaling operations are properly evaluated by someone who has been assigned this responsibility. A designated person is qualified based on their knowledge and experience in crane operations and signaling, ensuring that they are capable of accurately assessing the skills and competence of the signal person.

This standard mandates that the designated person has a full understanding of the operational procedures and safety measures associated with crane operations. By having a designated individual conduct the testing, it guarantees that the signal person meets the necessary qualifications and can effectively communicate and execute signaling commands, thereby enhancing overall safety on the job site.

In contrast, while an authorized technician, qualified operator, or project manager may possess significant experience and knowledge, their roles do not specifically align with the criteria needed to conduct evaluations for signaling competency as per the ASME B30.5 standard. It is the designated person's specific role and training that make them the appropriate choice for this responsibility.