Permit holder who supervised the work, in the 1 to 4 RADIUS 30 m in a similar task, and the work is not high risk (high risk: High Pressure Water Jet, Lifting and lifting work Method statement).
Permit holder 1 controller has four works in a radius of 30 meters in the area. And there is a high risk. (At high risk include High Pressure Water Jet, Lifting and Handling with Method statement).
Permit holder 1 supervisor has 4 work within 30 meters in the nearby. And it has no high risk (high risk, including High Pressure Water Jet, lift Lifting and tasks have Method statement)