How to Select the Right Valve Positioner for Critical Safety Instrumented Systems

How to Select the Right Valve Positioner for Critical Safety Instrumented Systems

Positioners are a fundamental element in the safety loop of safety-instrumented systems. These are protective systems used in industries for possible risk and hazard and to save life and property. The significance of control valve positioners for safety systems should not be underestimated with regard to system reliability and accuracy.

Advantages 

The positions of valves are controlled by valve positioners according to signals from control systems. This is what makes sure that valves open and close at the appropriate moments and to the proper degrees. Especially in applications where safety is of utmost concern, choosing the correct valve positioner is crucial to protect the system.

Some important aspects to consider when selecting a valve positioner for critical applications are reliability, accuracy and suitability to the existing control system. Care should be taken that the valve positioner is created for the requirements of the safety instrumented system.

Benefits 

There are a number of valve positioner technologies to safety instrumented systems, which include pneumatic, electric and digital positioners. All of these technologies have their own strengths and weaknesses and you have to compare them carefully.

Some guidelines for maintaining the reliability of a workover rig  in a critical application are scheduled maintenance and calibration. Adhering to the manufacturer’s maintenance guidelines is important and regularly inspecting for problems.

Correctly sizing the valve positioner to each safety integrity level (SIL) helps to ensure safety and the system’s reliability. The SIL tells us what the safety instrumented system can do for us in terms of risk reduction. A valve positioner is chosen taking into account the associated SIL requirements for the system.

Conclusion:

 Choosing a valve positioner can have huge implications for the safety and reliability of such critical safety instrumented systems. Xiangjing can optimize the reliability of its safety systems by understanding why valve positioners are critical, selecting valves and accessories wisely, evaluating various technologies, implementing maintenance best practices and making sure it complies with SIL. Remember, safety always comes first!