Offer SIL certification and SIL grading consulting services - Shenzhen Zhongnuo Testing Technology Co., Ltd.
SIL Certification Level Pre-Assessment Submission Document List
Product User Manual
2. Product Safety Feature List
3. Product Safety Manual
4. Failure Mode and Effects Analysis (FMEDA) Excel File
5. Quality Management System Certificate (ISO 9001)
6. Product Photos (including front and side views of representative models)
7. Product Design Documents (drawings, material reports, calculations, etc.)
8. Additional Information

As the awareness of industrial accidents and their impact on society grows, more and more companies recognize the importance of safety.
In modern process industries, due to complex processes and numerous equipment, any failure can have severe consequences for employees, the public, equipment, or the environment.
The SIL certification process is about helping companies fully leverage their good engineering practices and safety technologies (IEC61508 and IEC61511) to prevent industrial accidents from recurring. This is because these experiences and technologies are based on a wealth of practical experience and lessons learned.
With the issuance of the IEC 61508 and IEC 61511 series standards, a systematic functional safety evaluation and testing process effectively addresses this issue.

The significance of obtaining SIL certification for products
1. SIL Certification's Impact on Product Integrity:
We guarantee the accuracy of the product's specific function.
(2) Enhance product acceptance and recognition within the industry.
(3) Certified products offer enhanced safety, thereby boosting the competitiveness of the products.
(4) Customers typically believe: Certified = Recognized = The.
2. The cumulative impact of SIL certification on the enterprise:
(1) Enhance corporate safety experience and proficiency.
(3) The enterprise's R&D process is more standardized and verifiable.
(4) Enhanced security measures are in place during incidents.
(5) Throughout the certification process, ensure the company maintains a high level of research and development.
If a project, system, or product achieves SIL certification, its quality and safety are also recognized and acknowledged. This not only enhances the company's market competitiveness but greatly boosts customers' confidence in the product. Therefore, if a product significantly impacts life and property safety, obtaining SIL certification is necessary.

What is the failure rate of SIL certification?
During the SIL certification process, a concept we often refer to is the equipment failure rate, which is a core term in SIL certification. It can be said that without determining the failure rate, the SIL certification is incomplete and inadequate. So, what exactly is the concept of failure rate?
Firstly, to understand failure rate, we need to grasp what failure means. According to GB/T 20438.4 and also the definition in IEC 61508, failure is "the cessation of the ability of a functional unit to perform a required function, or the operation of the functional unit in a non-required manner." A more intuitive understanding would be: normally, y=f(x), but after failure, it becomes y≠f(x), where f() represents the pre-set function, and y denotes our safety expectation. This also explains why the word "function" is used for both function and function in English.
This statement might be too formal and not easily understood by the general public. So, let's put it in more colloquial terms, likening it to a lighting system. When the lighting system fails to illuminate or doesn't light up as per our set requirements, it's considered to be malfunctioning.
So said, everyone may know that when a product fails to perform as per our set requirements, we can say it is defective. Then, what is the probability of this defect? This is what we call the failure rate.
After understanding what failure is, we can start to classify the types of failure. In the concept of functional safety, failures can be divided into two main categories based on the cause of their occurrence: systematic failure and random hardware failure. Among them, random hardware failure is quantifiable. The calculation process of PFDavg is based on a probabilistic analysis of random hardware failure.
In the SIL certification, we aim to determine the product's failure rate by analyzing the theoretical model and utilizing the experience data from its market sales. This, combined with other parts of the SIL certification, forms a comprehensive system to ensure the reliable and secure execution of safety functions.
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, which evaluate and confirm the Safety Integrity Level (SIL) or Performance Level (PL) of safety equipment. Functional safety certification primarily involves document management (FSM) assessments 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, encompassing both product and system levels, with SIL4 being the most stringent.