An employee before starting work, check the safety of the device. Machine and work area conditions. If you find a security vulnerability or point to point to notify the head first to revise work before going to work.
Employees before starting work to ensure the safety of equipment and work areas. If you see a reckless or unsafe must notify the chief prior to the amendment before work.
The staff before the start of work to monitor the safety of equipment and machinery of area level. If the risk points to inform the captain or unsafe to adjust before going to work.