A useful JHA changes the job
A signed form is not evidence that the work is controlled.
Understand the decision
Picture a maintenance crew arriving with a signed assessment. Their trolley cannot pass through the planned access door. They propose carrying the load through a busy loading bay. The paperwork has not changed, but the exposure has. This course follows the decisions between planning a job and releasing it for work.
Apply it
What should happen before the crew changes route?
Compare your reasoning
Pause the affected task, reassess the alternative route with the crew and responsible supervisor, and verify the revised controls before restart.