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GB/T 17888.2-2020 English PDF (GBT17888.2-2020)

GB/T 17888.2-2020 English PDF (GBT17888.2-2020)

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GB/T 17888.2-2020: Safety of machinery. Permanent means of access to machinery -- Part 2: Working platforms and walkways

GB/T 17888.2-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.110
J 09
GB/T 17888.2-2020 / ISO 14122-2:2016
Replacing GB/T 17888.2-2008
Safety of Machinery – Permanent Means of Access to
Machinery – Part 2: Working Platforms and Walkways
(ISO 14122-2:2016, IDT)
ISSUED ON: NOVEMBER 19, 2020
IMPLEMENTED ON: JUNE 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 7
2 Normative References ... 7
3 Terms and Definitions ... 8
4 General Requirements ... 9
4.1 General ... 9
4.2 Specific requirements ... 10
5 Information for Use for Working Platforms and Walkways ... 17
Annex A (Informative) Different Methods of Determining Levels of Slip-Resistance ... 19
Annex B (Informative) Significant Technical Changes between this Part and GB/T 17888.2-2008 ... 20
Bibliography ... 22
Foreword
GB/T 17888 Safety of Machinery – Permanent Means of Access to Machinery constitutes the following four parts:
--- Part 1: Choice of a Fixed Means and General Requirements of Access; --- Part 2: Working Platforms and Walkways;
--- Part 3: Stairs, Stepladders and Guard-Rails;
--- Part 4: Fixed Ladders.
This Part is Part 2 of GB/T 17888.
This Part was drafted as per the rules specified in GB/T 1.1-2009.
This Part replaced GB/T 17888.2-2008 Safety of Machinery - Permanent Means of Access to Machinery - Part 2: Working Platforms and Walkways. Compared with GB/T 17888.2-2008, the major technical changes of this Part can refer to Annex B.
This Part used translation method to equivalently adopt ISO 14122-2:2016 Safety of Machinery - Permanent Means of Access to Machinery - Part 2: Working Platforms and Walkways. The Chinese documents that have consistent correspondence with the international documents normatively cited in this Part are as follows:
--- GB/T 8196-2018 Safety of Machinery – Guards - General Requirements for the Design and Construction of Fixed and Movable Guards (ISO 14120:2015, IDT)
--- GB/T 15706-2012 Safety of Machinery - General Principles for Design - Risk Assessment and Risk Reduction (ISO 12100:2010, IDT)
--- GB/T 18717.1-2002 Ergonomic Design for the Safety of Machinery - Part 1: Principles for Determining the Dimensions Required for Openings for Whole-Body Access into Machinery (ISO 15534-1:2000, NEQ)
--- GB/T 18717.3-2002 Ergonomic Design for the Safety of Machinery - Part 3: Anthropometric Data (ISO 15534-3:2000, NEQ)
--- GB/T 17888.1-2020 Safety of Machinery - Permanent Means of Access to Machinery - Part 1: Choice of Fixed Means and General Requirements of Access (ISO 14122-1:2016, IDT)
--- GB/T 17888.3-2020 Safety of Machinery - Permanent Means of Access to Machinery - Part 3: Stairs, Stepladders and Guard-Rails (ISO 14122-3:2016, IDT)
--- GB/T 23821-2009 Safety of Machinery - Safety Distances to Prevent Hazard Zones Being Reached by Upper and Lower Limbs (ISO 13857:2008, IDT)
This Part made the following editorial modifications:
--- Change the symbol of the head height from h to e;
--- Adjust the logical relationship of the specific requirements in 4.2.4.5.2 when the gap is greater than 20mm;
--- Change the symbol of edge height from h to α in Figure 3.
This Part was proposed by and under the jurisdiction of National Technical Committee on Mechanical Safety of Standardization Administration of China (SAC/TC 208). Drafting organizations of this Part: Ningbo Vichnet Technology Co., Ltd.; Zhangjiagang Zhonglei Industrial Co., Ltd.; Maanshan Chenxu Mechanical Produce Co., Ltd.; Suzhou Lihong Standardization Consulting Service Co., Ltd.; Zhengzhou Guizhu Industry and Trading Co., Ltd.; China Productivity Center for Machinery; Zhejiang Aopeng Industry and Trading Co., Ltd.; Tianjin Jinmao Group Co., Inc.; Wright Housewares Co., Ltd. Foshan; Shanghai Ruiju Metal Products Co., Ltd.; Shenyang Yongpan Metal Products Co., Ltd.; Nanjing Forestry University/National-Provincial Joint Engineering Research Center of Biomaterials for Electromechanical Product Packaging; Yancheng STG Safety Equipment Co., Ltd.; Fujian Minxuan Technology Co., Ltd.; Xiamen Yangmai Electric Co., Ltd.; Xi’an Yuntuo Electric Co., Ltd.; Suzhou Angoey Smart Safety Technologies Co., Ltd.; Shaanxi Guohongfu Testing Technology Co., Ltd.; Nan'an Zhongji Standardization Research Institute Co., Ltd.; Lihong Safety Engineering (Shanghai) Co., Ltd.; Zhejiang Anya Smart Technology Co., Ltd.; Quanzhou Association of Standardization; Xi'an Zhiheng Electrical Apparatus Technology Co., Ltd.; Jinhua Wangyuan Electronic Technology Co., Ltd.; and Suzhou Metrology and Testing Institute.
Chief drafting staffs of this Part: Wen Lijun, Liu Yuan, Shi Liping, Wang Jiahao, Liu Zhiyong, Chen Miaoren, Li Qin, Liu Zhilong, Wang Shengjiang, Cai Qiang, Xiong Yuping, Zhu Bin, Liu Xiaolin, Wang Xuezhi, Fu Huiqing, Hu Youyu, Chen Mingzhne, Cai Baorong, Yang Yi, Ju Ronghua, Yao Jiayi, Cheng Hongbing, Liang Runxi, Qin Peijun, Yu Bo, Li Jie, Shen Dehong, Chen Jiaxing, Zhao Maocheng, Lin Hongsong, Hu Mingjun, Liu Ying, Li Liyan, Cai Binbin, Li Chunping, Chen Huiling, Cheng Sifu, Chen Dongmin, Dong Kaibo, Su Shiwei, Hou Hongying Chen Jiali, Jia Shuxu, Chen Zhuoxian, and Zhang Xiaofei.
The historical editions replaced by this Part are as follows:
--- GB 17888.2-1999, GB/T 17888.2-2008.
Safety of Machinery – Permanent Means of Access to
Machinery – Part 2: Working Platforms and Walkways
1 Scope
This Part of GB/T 17888 gives requirements for non-powered working platforms and walkways which are a part of a stationary machine, and to the non-powered adjustable parts (e.g., foldable, sliding) and movable parts of those fixed means of access.
NOTE 1: “Fixed” means of access are those mounted in such a manner (for example, by screws, nuts, welding) that they can only be removed by the use of tools.
This Part specifies minimum requirements that also apply when the same means of access is required as the part of the building or civil construction (e.g., working platforms, walkways) where the machine is installed, on condition that the main function of that part of the construction is to provide a means of access to the machine.
NOTE 2: Where no local regulation or standards exist, this part of ISO 14122 can be used for means of access which are outside the scope of the standard.
It is intended that this Part be used with GB/T 17888.1 to give the requirements for walking platforms and walkways.
The GB/T 17888 series as a whole is applicable to both stationary and mobile machinery where fixed means of access are necessary. It is not applicable to powered means of access such as lifts, escalators, or other devices specially designed to lift persons between two levels. 2 Normative References
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this document.
ISO 12100 Safety of Machinery – General Principles for Design – Risk Assessment and Risk Reduction
ISO 13857 Safety of Machinery – Safety Distances to Prevent Hazard Zones being Reached by Upper and Lower Limbs
ISO 14120 Safety of Machinery – Guards – General Requirements for the Design and Construction of Fixed and Movable Guards
ISO 14122-1:2016 Safety of Machinery – Permanent Means of Access to Machinery – Part 1: Choice of Fixed Means and General Requirements of Access
ISO 14122-3:2016 Safety of Machinery – Permanent Means of Access to Machinery – Part 3: Stairs, Stepladders and Guard-Rails
ISO 15534-1:2000 Ergonomic Design for the Safety of Machinery – Part 1: Principles for Determining the Dimensions Required for Openings for Whole-Body Access into Machinery
ISO 15534-3:2000 Ergonomic Design for the Safety of Machinery – Part 3: Anthropometric Data
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in ISO 12100, ISO 14122- 1, and the following apply.
3.1 Flooring
Assembly of elements making up the floor of a walkway (3.2) or a working platform (3.3) and being in direct contact with footwear.
3.2 Walkway
Level or inclined surface used for moving from one point to another.
3.2.1 Maneuverable walkway
Level or inclined surface used for moving, installed at the machine permanently, and intended to be shortened, elongated, or altered in its position.
NOTE: This includes foldable, slidable, adjustable and/or hinged to, or slid from an adjacent platform or walkway.
3.3 Working platform
Horizontal level surface used for the operation, maintenance, inspection, repair, sampling, and other phases of work in connection with the machinery.
3.3.1 Maneuverable platform
Level surface used for operation, installed at the machine permanently, and intended to be shortened, elongated, or altered in its position.

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