GB/T 16855.1-2018 English PDF (GBT16855.1-2018)

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GB/T 16855.1-2018: Safety of machinery -- Safety-related parts of control systems -- Part 1: General principles for design
GB/T 16855.1-2018
Safety of machinery - Safety-related parts of control systems - Part 1.General principles for design
ICS 13.110
J09
National Standards of People's Republic of China
Replace GB/T 16855.1-2008
Safety related components of machinery safety control system
Part 1.General Design Rules
2018-12-28 released
2019-07-01 implementation
State Administration for Market Regulation
Issued by China National Standardization Administration
Table of contents
Preface Ⅲ
Introduction Ⅳ
1 Scope 1
2 Normative references 1
3 Terms and definitions, symbols and abbreviations 2
3.1 Terms and definitions 2
3.2 Symbols and abbreviations 6
4 Design considerations 8
4.1 Safety goals in design 8
4.2 Risk reduction strategies 9
4.3 Determining the required performance level (PLr) 11
4.4 Design of SRP/CS 12
4.5 Evaluation of required performance level PL and its relationship with SIL 12
4.6 Software safety requirements 18
4.7 Verify that the achieved PL meets PLr 21
4.8 Design in terms of human efficacy 21
5 Security features 22
5.1 Safety Function Specification 22
5.2 Details of safety functions 23
6 Categories and their relationship with DCavg, CCF and MTTFD per channel 25
6.1 General requirements 25
6.2 Category specification 26
6.3 SRP/CS combination to achieve total PL 33
7 Fault considerations and troubleshooting 34
7.1 General requirements 34
7.2 Failure considerations 34
7.3 Troubleshooting 34
8 Confirmation 34
9 Maintenance 34
10 Technical documents 34
11 Use Information 35
Appendix A (informative appendix) Determination of required performance level (PLr) 36
Appendix B (informative appendix) Module method and safety-related modules Figure 39
Appendix C (informative appendix) Calculation or evaluation of the MTTFD value of a single component 41
Appendix D (informative appendix) A simplified method for estimating the MTTFD of each channel 47
Appendix E (informative appendix) Function and module diagnostic coverage (DC) estimation 49
Appendix F (informative appendix) Estimation of Common Cause Failure (CCF) 52
Appendix G (informative appendix) Systemic failure 54
Appendix H (Informative Appendix) Examples of combinations of safety-related components of control systems 56
Appendix I (informative appendix) Example 59
Appendix J (Informative Appendix) Software 66
Appendix K (informative appendix) Figure 5 Numerical representation 69
References 73
Preface
GB/T 16855 "Safety Related Parts of Machinery Safety Control System" consists of the following two parts.
---Part 1.General Design Rules;
---Part 2.Confirmation.
This part is Part 1 of GB/T 16855.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 16855.1-2008 "Mechanical Safety Control System Relevant Safety Components Part 1.General Design Rules." versus
Compared with GB/T 16855.1-2008, the main technical changes except for editorial changes are as follows.
---Revised the standard name to "Safety Related Components of Machinery Safety Control System Part 1.General Design Principles";
--- Deleted Table 1 in the introduction (see the introduction of the.2008 edition);
--- Modify the term "system failure" to "systematic failure" (see 3.1.7,.2008 version 3.1.7);
--- Modify the term "average dangerous failure time" to "average dangerous failure time" and modify its acronym to "MTTFD"
(See 3.1.25, 3.1.25 of the.2008 edition);
---Added the term "high demand or continuous mode" "proven use" and its definition (see 3.1.38 and 3.1.39);
---Revised Figure 1 (Figure 1, Figure 1 of the.2008 edition);
---Added the requirements of SRP/CS output part by category description (see 4.5.5);
---Modified the calculation or estimation of the MTTFD value of a single component (see Appendix C, Appendix C of the.2008 edition);
---Re-drafted Appendix I (see Appendix I, Appendix I of the.2008 edition).
The translation method used in this part is equivalent to the adoption of ISO 13849-1.2015 ``Safety Related Parts of Machinery Safety Control System Part 1.Design
General Rules of Planning.
The Chinese documents that have a consistent correspondence with the international documents cited in this section are as follows.
---GB 28526-2012 Mechanical electrical safety safety related electrical, electronic and programmable electronic control system functional safety
(IEC 62061.2005, IDT);
---GB/T 30175-2013 Mechanical safety application GB/T 16855.1 and GB 28526 design safety-related control system
Guide (ISO /T R23849.2010, IDT).
This section has made the following editorial changes.
---The editorial errors in Table 1 were revised, "Table 3" was changed to "Table 2", "Table 4" was changed to "Table 3", and "Table 7" was changed to "Table 6."
This part is proposed and managed by the National Machinery Safety Standardization Technical Committee (SAC/TC208).
Drafting organizations of this section. Pilz Electronics (Changzhou) Co., Ltd., China Machinery Productivity Promotion Center, Anhui Leku Intelligent Parking Equipment Co., Ltd.
Company, Suzhou Angao Intelligent Safety Technology Co., Ltd., Xiamen Rituo Electric Technology Co., Ltd., Nan'an China National Machinery Standardization Research Institute Co., Ltd.
Company, Fujian Minxuan Technology Co., Ltd., Soft Control Co., Ltd., China Software Evaluation Center, Enschlung (Shanghai) Mechanical and Electrical Trading Co., Ltd.
Company, Huace Testing and Certification Group Co., Ltd., Nanjing University of Science and Technology, Xi’an Xumai Intelligent Appliance Technology Co., Ltd., Nanjing Forestry University
The National and Local Joint Engineering Research Center of Biomass Materials for Mechanical and Electrical Products Packaging, Nan’an Quality Metrology and Testing Institute, Lihong Safety Equipment Engineering
Cheng (Shanghai) Co., Ltd., Zhejiang Thunderbird Supply Chain Management Co., Ltd.
The main drafters of this section. Zhang Xiaofei, Huang Zhijiong, Li Qin, Zhu Bin, Sun Zhenchao, Li Liyan, Zhao Yangyang, Wang Baozhen, Yu Mingjin, Liu Fawang,
Lu Xiaoguang, Guo Yongzhen, Liu Panchao, Curie Kai, Cheng Hongbing, Bai Honghai, Ju Ronghua, Ji Kun, Hou Hongying, Huang Dongsheng, Yin Zhiyao, Fu Huiqing, Liu Ying,
Chen Zhuoxian, Li Zhong, Liu Zhiyong, Song Xiaoning, Li Yali, Zhou Aiping.
The previous releases of the standards replaced by this part are.
---GB/T 16855.1-1997, GB/T 16855.1-2005, GB/T 16855.1-2008.
introduction
The structure of safety standards in the machinery sector is as follows.
a) Type A standards (basic safety standards), giving the basic concepts, design principles and general characteristics applicable to all machinery;
b) Type B standard (general safety standard), which involves a safety feature of machinery or a type of safety device with a wide range of use.
---B1 category, specific safety features (such as safety distance, surface temperature, noise) standards;
---B2 category, safety devices (such as two-hand control devices, interlocking devices, pressure sensitive devices, protective devices) standards.
c) Class C standards (safety standards for mechanical products), which specify detailed safety requirements for a specific machine or a group of machines.
In accordance with the provisions of GB/T 15706, this section belongs to the B standard.
This part is particularly relevant to the following stakeholders related to machinery safety.
---Machine manufacturer;
---Health and safety agency.
Other stakeholders affected by the level of machinery safety are.
---Machine users;
---Machine ow...