SIL English full name: Safety integrity Level —— safety integrity level.

SIL certification is divided into 4 levels : SIL1 , SIL2 , SIL3 , SIL4 , including two levels of product and system. Among them, SIL4 has the highest requirements, such as railway ATP system and petrochemical power SIS system . Petrochemical instrumentation has recently generally selected SIL2 and SIL3 .

SIL certification is a standard cluster formed based on functional safety standards such as IEC 61508, IEC 61511, IEC 61513, IEC 13849-1, IEC 62061, IEC 61800-5-2, etc., and has a safety integrity level (SIL) or performance for safety-related equipment A third-party assessment of the rating (PL) . The SIL assessment mainly involves project management (FSM) for the development process of safety equipment , the development process, the safety and reliability of hardware / software, and assessment of basic safety features such as environmental adaptability and EMC electromagnetic compatibility.

The evaluation of the safety integrity of a system is composed of SIL verification (system level) of the functional circuit of the safety instrumented system and SIL assessment (product level) of the instrumentation products that constitute the safety instrumented system . Generally speaking, " SIL evaluation" refers only to the SIL evaluation of the instrumentation products that constitute the safety instrumented system . Safety integrity is divided into 4 levels (SIL1 ~ 4) , of which the requirements of SIL4 are the highest.

Significance of SIL certification :

With the widespread recognition of industrial accidents and their impact on society, more and more companies are aware of the importance of safety. The process of SIL certification is to help companies make the best use of the best engineering practices and safety technologies ( IEC61508 and IEC61511 ) to avoid the recurrence of industrial accidents. Because these experiences and technologies are based on a lot of practical experience and lessons.

The practical significance of SIL certification lies in:

◆ Improve safety;

◆ Prevent physical damage to production personnel and people outside the production area;

◆ Avoid environmental damage;

◆ Avoid production loss;

◆ Avoid legal liability.

 Please consult us for the price of the SIL certification process. Dutong Testing specializes in SIL certification and certification consulting services. SIL certifications have been issued for dozens of units , and the certified products cover almost all types of industrial control products. We have rich experience in SIL certification for valves, actuators and instruments , and many customer cases. Welcome to inquire 1387 425 651/4007780028