On March 21-22, 2024, the discussion on the revision of the draft national standard of “GB/T 16855.1-2018 Mechanical Safety Control System Part 1: General Principles for Design” was successfully held in Ningbo, Zhejiang, which further promoted the improvement and upgrading of domestic mechanical safety standards. As the national Mechanical Safety Standardization Technical Committee (SAC/TC208) Safety control system working group (SAC/TC208/WG4) contractor, Pierre magnetic organization held the meeting.

PDP601 The symposium brought together industry experts, academics and practitioners in the field of machinery safety from across the country. SAC/TC208 Director Li Qin, SAC/TC208 Deputy Director Cheng Hongbing, Secretary General Zhang Xiaofei, and Huang Zhijiong, deputy general manager of Piac China, attended the meeting to discuss and review the standards.

“GB/T 16855.1-2018 Mechanical Safety Safety control system Part 1: Design General Principles” is one of the important standards in the field of mechanical safety, and is focused on the National Mechanical Safety Standardization Technical Committee (SAC/TC208). The standard has been updated several times before. In 2023, the first system revision meeting was held in Taizhou, Zhejiang Province, and the standard detailed rules were discussed. This is the third revision meeting of the standard, chaired by the safety expert Yin Zhiyao of Pierre Magnetic, in accordance with the rules given by GB/T 1.1-2009, based on ISO 13849-1:23-year-old, a number of safety specifications and requirements added to the new standard were carefully analyzed and discussed.

Key elements of the meeting include:

1. Update of security terms and definitions

Some of the terms and definitions of the older standard were updated to make them more consistent with the actual design of safety control systems.

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2. Safety function specification

As the first step of safety control system design, it is undoubtedly very important to formulate safety function specification. The experts discussed in detail the identification of safety functions and the necessary information for writing safety requirements specifications, and made clear the necessity of safety specification review.

3. Development and verification of security control software

PDP601 The new version of the standard has added software-related chapters and appendices, and experts discuss in detail the requirements and verification methods of security-related embedded software and application software. The necessity for users to use safety-related software to write safety programs is emphasized. In the PL-level evaluation phase, for security control systems that use software, in addition to the hardware, the user’s application must also be evaluated.

4. Review of other chapters and appendices

The experts also discussed the remaining chapters and appendices of the standard in groups, and revised the unclear and ambiguous expressions in the original discussion draft. The relevance of appendix examples to the requirements of the text is also discussed. Experts agreed that compared with the old version, the new version of the standard has been greatly updated in content, is more comprehensive, and contains more examples, and is more operable at the implementation level.

As a well-known brand in the field of safety automation, Pilmagnetic has been committed to the promotion of machinery safety concepts since entering the Chinese market, and actively participates in the standardization of machinery safety in China. Up to now, there have been nearly 50 national safety standards for machinery led by or participated in by Pilmagnetic. We believe that the improvement of the standard system is conducive to promoting the development of the entire industry towards a safe, efficient and sustainable direction. In the future, Pilmagnetic will continue to take root in the field of safety automation, relying on its more than 70 years of rich experience in production and research of safety technology, to provide customers with better products and services, to improve the essential safety level of machinery and equipment, and to contribute more to the upgrading of industrial safety automation.