Operating System Installation Safety for operators to reduce the unprotected part of itself to the device before the worker Safety. The percentage is up to 67% of all applications before installation. Safety control systems and install a device to prevent it. Aims to reduce not wearing protective equipment decreased to 10% from the previous installation. To be able to solve problems in the operation, regardless of security. These can be displayed as a graph from Figure 5.1 shows a comparison of data using cranes and Safety equipment before installation and after installation.