Offer SIL Certification and SIL Grading Consultancy Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.
The SIL Functional Safety Certification is one of the crucial certifications for modern enterprises. In the modern industrial production characterized by mechanization, while instruments and machinery enhance production efficiency, the complexity of production processes and the precision of equipment often lead to uncontrollable variables and factors during mechanized production. For instance, equipment failures, instrument shorts, and system malfunctions can cause explosions, fires, and toxic gas leaks, posing severe threats to people's safety of life and property as well as the environment, sometimes resulting in catastrophic consequences.
How can we minimize or keep this series of disasters and consequences within an acceptable range?
Therefore, the SIL certification has emerged.
In fact, equipment failures occur at various stages of the product lifecycle, just with varying probabilities. SIL certification involves intervening from the outset of product design, implementing manageable control over the entire lifecycle of the product according to specific standards and mature specifications, thereby reducing the likelihood of failures. This aims to control risks.

SIL 2 and SIL 3 certifications are two different levels. According to international certification standards, the SIL 3 level is higher than the SIL 2 level. Specifically, this is manifested as:
A SIL1-rated actuator should have a failure probability of ≤10^-6 to <10^-5 during continuous operation per hour.
SIL2 ranges from ≥10^-7 to <10^-6. SIL3 is from ≥10^-8 to <10^-7.
Of course, the product requirements for SIL3 level are much higher than those for SIL2.
Most products currently meet the requirements with SIL 2 or SIL 3 certification levels.

SIL Certification Level Pre-Assessment Submission Document List
Product Instructions
2. Product Safety Feature Checklist
3. Product Safety Manual
4. Failure Mode and Effects Analysis (FMEDA) Excel File
5. Quality Management System Certificate (ISO9001)
6. Product Photos (including front and side views of representative models)
7. Product Design Documents (drawings, material reports, calculation sheets, etc.)
8. Additional Information

SIL certification, also known as Functional Safety Certification, focuses on the safety functions of a product. Pursuing SIL certification is to verify whether these safety functions can be reliably and safely implemented.
For instance, with a lighting fixture, we're concerned with its lighting function, whether its light intensity can reliably and safely meet our requirements.
SIL certification is a third-party assessment, 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, and IEC 61800-5-2, evaluating and confirming the Safety Integrity Level (SIL) or Performance Level (PL) of safety equipment. Functional safety certification primarily involves assessments of document management (FSM) for the development process of safety equipment, hardware reliability calculations and evaluations, software assessments, environmental testing, and EMC electromagnetic compatibility testing. SIL certification is divided into four levels: SIL1, SIL2, SIL3, and SIL4, covering both product and system levels, with SIL4 having the highest requirements.