Define in the "Definition of Terms" who is the; Work Permit Issuer and Work Permit Receiver in the procedure. In this way, we have a clear-cut idea who will administer the "gas tests" and must ensure by now a ready instrument to be used. A log-in/log-out form should also be included as attachment. Warning signages, barricade materials and the likes should also readied in advance. Include these inputs in the procedure.