1、 SIL certification

SIL（Safety Integrity Level）Certification - Security Integrity Level Certification

SIL certification is a third-party evaluation, verification, and certification based on standards such as IEC 61508 (GB/T 20438), IEC 61511 (GB/T 21109), IEC 61513, IEC 13849-1, IEC 62061, IEC 61800-5-2, to evaluate and confirm the Safety Integrity Level (SIL) or Performance Level (PL) of safety equipment. Functional safety certification is often referred to as SIL certification. Functional safety certification mainly involves document management (FSM) evaluation for the development process of safety equipment, hardware reliability calculation and evaluation, software evaluation, environmental testing, EMC electromagnetic compatibility testing, and other contents.　

The SIL technical standard was first promulgated and formulated by the International Electrotechnical Commission (IEC), and is implemented under the jurisdiction of IEC/TC65.

SIL (Safety Integrity Level) - Safety Integrity Level. SIL certification is divided into four levels, SIL1, SIL2, SIL3, and SIL4, including two levels for products and systems. Among them, SIL4 has the highest requirements. 

2、 The significance of SIL certification:

With industrial accidents and their impact on society being widely recognized, more and more enterprises are realizing the importance of safety. In modern process industrial production, due to complex processes and numerous equipment, any failure will have serious consequences for employees, the public, equipment, or the environment. The process of SIL certification is to help enterprises fully utilize the best engineering practice experience and safety technology (IEC61508 and IEC61511) to avoid the recurrence of industrial accidents. Because these experiences and technologies are built upon a wealth of practical experience and lessons learned. With the issuance of the IEC61508 and IEC 61511 series standards, a system's functional safety assessment and testing process can effectively solve this problem.　

The practical significance of SIL certification lies in:

(1) Improve safety;

(2) Prevent physical harm to production personnel and people outside the production area;

(3) Avoid damaging the environment;

(4) To avoid production losses;

(5) Avoid legal liability. 

3、 SIL certified product range:

Functional safety certification applies to all devices used to achieve process control safety functions, mainly divided into safety components and safety systems, such as:

1. Safety components: on-site sensors, pressure transmitters, temperature transmitters, level transmitters, level switches, programmable controllers, logic solvers, on-site safety actuators (pneumatic/hydraulic/electric), safety switches, safety valves, solenoid valves, shut-off valves, solenoid valves, safety barriers, etc.

2. Security system categories: SIS (Safety Instrumented System), ESD (Emergency Stop System), Instrument Protection System (IPS), Combustion Management System (BMS), F&G (Fire and Gas Protection System), HIPPS (High Pressure Pipeline Protection System), PSD (Process Shutdown System).

3. Other electronic/electrical/programmable electronic products with safety requirements. 

4、 Basic process of SIL certification

1. The customer provides product information (product manual) and SIL level to Zhongnuo Testing for preliminary evaluation and quotation

2. Customer accepts quotation and confirms SIL certification project

3. Zhongnuo Testing dispatches engineers to the factory to assist in improving product drawing design to meet SIL level requirements

4. Make samples based on the improved drawings and commission Zhongnuo Testing Laboratory for testing

5. After passing the test, issue a Functional Safety Report (FSA Report)

6. On site review

7. Qualified review and issuance of SIL certificate 

5、 SIL certification fees and cycles

The cost and cycle of SIL certification are directly related to the complexity and SIL level of the product. For details, please consult Zhongnuo Testing directly.

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