
Safety Instrumentation Systems (SIS) play a vital role in energy industries and global processes where they are used to provide extra safety to workers and equipment as well as for protecting the environment and nearby communities. When safe operating conditions are violated or safety limits are exceeded, safety instrumentation systems (SIS) are used to return the process to a safe state. Safety Instrumentation systems (SIS) are independent systems comprising sensors, actuators and logic solvers that successfully measure temperature, water level and pressure to ensure the safety of the process. Moreover, safety instrumentation systems provide safety by reducing the risk not to the unrealistic ideal of zero, but to a low level which can be bearable or can be solved later. Safety Instrumentation systems are used in various industries, such as chemicals, oil and gas, pharmaceuticals, paper and pulp, metal and mining, water treatment, food and beverages and power generation.