ASME B30.5 requires a hand signal chart to be posted where?

The requirement to post a hand signal chart conspicuously stems from the need for clear communication and safety on work sites involving cranes and similar equipment. By ensuring that the chart is placed in a location that is easily visible to all personnel, it allows both the signal person and operators to have a common reference point. This is crucial for maintaining effective communication, particularly in situations where visibility can be compromised and misunderstandings could lead to accidents or injuries.

Postings that are conspicuous are intended to capture attention quickly, making it more likely that everyone will have the opportunity to familiarize themselves with the signals before any operation begins. This practice is part of broader safety protocols outlined in ASME B30.5, which emphasizes the importance of clarity and understanding in the signals used to direct crane operations.

Choices that suggest placing the chart only in specific, less accessible locations would not ensure that all workers, especially those who may not be in the immediate vicinity of the operator's cabin or maintenance area, have easy access to the essential information needed for safe operation. Therefore, the requirement for conspicuous posting is endorsed to maximize safety and operational efficiency.