Offer SIL Certification, SIL Grading, and other consulting services - Shenzhen ZhongNuo Testing Technology Co., Ltd.
The SIL assessment covers the following content:
1. System Evaluation
Risk Analysis, classified by reference to the risk chart (ASIL/SIL/PL)
Review of specifications and safety requirements
Concept and Design Analysis
– Verification and Confirmation
2. Software and Tool Assessment
- Testing of development tools and other communication protocols
Structural Analysis
3. Hardware Assessment
Probability Analysis
Failure Analysis
4. SIL Certification
Component and System SIL Certification
- Safety Process SIL Certification
- Granting of system, semiconductor, development tools, and process testing symbols
5. Additional Services
Risk Applicability and Risk Analysis
Test and evaluate hardware and software for security during the development process
Conceptual Assessment (Initial Inspection)
Function and Safety Management (FSM)
- Security, reliability, and availability analysis
Compliant with relevant safety standards and qualified assessment
These services are aimed at manufacturers of parts, subsystems, and systems for the automotive industry (including electric vehicles), elevators, power plants, machinery, and process sectors. They support the fulfillment of due diligence obligations and ensure the correct application of the standard, contributing to enhanced safety levels and helping to minimize residual risks. Standards such as IEC61508 and others can be integrated into existing quality management systems in a beneficial manner. The enforcement of regulations and guidelines within the standards provides a reliable basis for decision-making, particularly regarding safety structures, testing procedures, and tools. Development outputs can be validated at an early stage, thereby reducing development time and costs. Furthermore, certification enhances the image and boosts the company's competitive standing in the market.

SIL Certification Costs and Timeline
The cost and duration of SIL certification are directly related to the complexity of the product and the SIL level.
SIL Certification Standards
SIL Functional Safety Certification Standards: IEC 61508, IEC 61511, IEC 62061, ISO 26262, ISO 13849, etc.

What is the failure rate of SIL certification?
During the SIL certification process, a concept we often refer to is 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 recognize failure rate, we need to understand what failure means. According to GB/T 20438.4 and also the definition in IEC61508, failure is "the termination of a functional unit's ability to perform a required function, or the functional unit operating in a non-required manner." A more intuitive understanding could be: normally, y=f(x), but after failure, it becomes y≠f(x), where f() represents the function we预先set, and y stands for our safety expectation. This also explains why the word "function" in English is used for both functions and functions.
This statement might be too formal and not easily understood by the general public. So, let's use colloquial language to illustrate, like a lighting system. When a lighting system doesn't illuminate or doesn't light up as per our set requirements, it's considered to be faulty.
So said, everyone might know that when a product fails to function according to our set requirements, we can say it's failed. Then, what's the probability of this failure? That's the failure rate.
Understanding what failure is, we can then categorize the types of failure. In the concept of functional safety, failures can be divided into two major 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 probabilistic analysis of random hardware failure.
In the SIL certification, we aim to determine the failure rate of the product by analyzing its theoretical model and utilizing empirical data from its market sales. This, combined with other parts of the SIL certification, forms a comprehensive system to ensure the reliable and safe execution of safety functions.

As the awareness of industrial accidents and their impact on society grows, more and more businesses are realizing the importance of safety.
In modern process industries, due to the complexity of processes and the multitude of equipment, any failure can have severe consequences for employees, the public, equipment, or the environment.
The SIL certification process involves helping businesses fully utilize their valuable engineering best practices and safety technologies (IEC 61508 and IEC 61511) to prevent the recurrence of industrial accidents. This is because these experiences and technologies are built upon extensive practical experience and lessons learned.
With the issuance of the IEC 61508 and IEC 61511 series standards, a systematic functional safety assessment and testing process can effectively address this issue.
SIL certification is a third-party assessment, verification, and certification process 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 the assessment 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, encompassing both product and system levels, with SIL4 being the most stringent.