How should a worker ensure that a snap-hook is fully engaged?

To ensure that a snap-hook is fully engaged, visually inspecting it is the most reliable method. This approach allows the worker to confirm that the hook is properly closed and locked onto the anchor point or load. A visual inspection can reveal if the hook is securely fastened without any misalignment or gaps that could indicate an incomplete engagement.

While feeling the snap-hook may give a sense of whether it is engaged, it does not provide a definitive confirmation. Listening for a locking sound can also be misleading, as some snap-hooks may not produce an audibly clear sound upon securing. Performing a weight load test, while a more rigorous method, is not always practical or safe to verify engagement before using the snap-hook in its intended application. Therefore, visual inspection remains the most efficient and safest way to ensure the snap-hook is fully engaged.