Why should a clearance (isolation guarantee) not be granted at a predetermined time?

A clearance or isolation guarantee should not be granted at a predetermined time primarily because some steps of the procedure may not have been completed. Safety protocols in maintenance and equipment repair rely on ensuring that all safety measures, including locks and tags, are effectively applied and verified. If a clearance is issued before confirming that all required steps have been completed, there is a risk that essential safety checks may be overlooked. Ensuring that every aspect of the isolation procedure is followed helps prevent accidents and ensures the safety of personnel working on or near the equipment.

The importance of completing all steps before granting clearance ties into the critical nature of safety in the workplace, where unpredictabilities can arise if procedures are not rigorously adhered to. This attention to detail is a cornerstone of effective safety management.