What must be done to engines before starting them on a drilling rig?

Before starting engines on a drilling rig, it is essential that the engines are in neutral with clutches disengaged. This practice is crucial for several reasons. First, ensuring the engines are in neutral prevents any unintended movement of the rig components, which could lead to accidents or injuries during start-up. Disengaging the clutches ensures that power is not transmitted to the drilling apparatus or other machinery, which could cause the equipment to start moving unexpectedly as soon as the engine is turned on.

Operating in this manner enhances safety protocols on the rig, allowing personnel to safely monitor engine performance and confirm that all systems are functioning correctly without the risk of activation. It is a standard safety measure in mechanical operation that helps prevent accidents and ensures the stability of the rig's operation.