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GB/T 18153-2024: Safety of machinery - Safety data to establish temperature limit values for touchable hot surfaces
Status: Valid GB/T 18153: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 18153-2024 | English | 439 |
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Safety of machinery - Safety data to establish temperature limit values for touchable hot surfaces
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GB/T 18153-2024
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| GB/T 18153-2000 | English | 679 |
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Safety of machinery. Temperatures of touchable surfaces. Ergonomics data to establish temperature limit values for hot surfaces
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GB/T 18153-2000
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PDF similar to GB/T 18153-2024
Basic data | Standard ID | GB/T 18153-2024 (GB/T18153-2024) | | Description (Translated English) | Safety of machinery - Safety data to establish temperature limit values for touchable hot surfaces | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J09 | | Classification of International Standard | 13.110 | | Word Count Estimation | 22,224 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-04-25 | | Older Standard (superseded by this standard) | GB/T 18153-2000 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 18153-2024: Safety of machinery - Safety data to establish temperature limit values for touchable hot surfaces
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 13:110
CCSJ09
National Standards of People's Republic of China
Replace GB/T 18153-2000
Machinery safety for determining the temperature of touchable hot surfaces
Safety data of limit values
touchablehotsurfaces
2024-04-25 implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Scalding threshold 2
4:1 Overview 2
4:2 Scalding threshold data 3
5 Method for determining surface temperature limit 9
5:1 Identifying touchable hot surfaces 9
5:2 Analysis Task 9
5:3 Choosing an appropriate burn threshold 9
5:4 Determination of surface temperature limits for different contact times 11
Appendix A (Informative) Procedure for determining surface temperature limits 12
Appendix B (Informative) Contact Time 13
Appendix C (Informative) Thermal Inertia of Materials 14
Reference 15
Foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents"
Drafting:
This document replaces GB/T 18153-2000 "Ergonomics for determining hot surface temperature limits for mechanical safety - accessible surface temperature"
Compared with GB/T 18153-2000, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
--- Added the term "contactable hot surface" (see 3:1);
--- Change the term "burn threshold" to "scald threshold" (see 3:5, 3:6 of the:2000 edition), and change "burn" to "scald" throughout the text
hurt";
---Change the scalding threshold for contact time less than 1s and the scalding threshold for contact time between 1s and 10s to 0:5s~
The burn threshold of 10s contact time has been revised and the requirements have been refined (see 4:2:1, 4:2:1 and 4:2:2 of the:2000 edition);
---Change the scald threshold subdivision from contact time greater than or equal to 1 minute to 10s~1min and contact time not less than 1min
Burn threshold (see 4:2:2 and 4:2:3, 4:2:3 of the:2000 edition);
--- Deleted the explanation and conclusion (see Chapter 6 of the:2000 edition);
--- Added the method for determining the surface temperature limit (see Chapter 5):
Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents:
This document is proposed and coordinated by the National Technical Committee for Machinery Safety Standardization (SAC/TC208):
This document was drafted by: Ningbo Weicheng Technology Co:, Ltd:, Shanghai Luanyue Precision Machinery Co:, Ltd:, Dongguan Pengjin Machinery Technology
Co:, Ltd:, Lane Intelligent Alloy (Guangde) Co:, Ltd:, Xiamen Yesheng Electric Co:, Ltd:, Suzhou Institute of Quality and Standardization, Nanjing Forestry University
Jinhua Jingyan Electromechanical Co:, Ltd:, Guangzhou Zeheng Industrial Co:, Ltd:, Sichuan Shuxing Youchuang Safety Technology Co:, Ltd:, Qingdao Leiting Heavy Industry
Co:, Ltd:, China Coal Beijing Coal Mining Machinery Co:, Ltd:, Nanjing University of Science and Technology, Pilz Electronics (Changzhou) Co:, Ltd:, China Machinery
Productivity Promotion Center Co:, Ltd:, Lantu Automobile Technology Co:, Ltd:, China State Shipbuilding Corporation No: 703 Research Institute, Shenzhen Bay Measurement & Control Co:, Ltd:
Technology Co:, Ltd:, Central China Normal University, Jiangsu Special Equipment Safety Supervision and Inspection Institute, Inner Mongolia University of Science and Technology, Dongguan Yifu Machinery
Technology Co:, Ltd:, Fujian Minxuan Technology Co:, Ltd:, Shenzhen Danse Display Technology Co:, Ltd:, Zhejiang Sanrui Automobile Technology Co:, Ltd:
Shenyang Yongpan Metal Products Co:, Ltd:, Hangzhou Fuda Dehumidification Equipment Co:, Ltd:, Guangdong Huahui Intelligent Equipment Co:, Ltd:, Tianjin Tai
Zheng Machinery Co:, Ltd:, Qingdao Lianshan Casting Co:, Ltd:, Sichuan Gongtuo Geotechnical Technology Co:, Ltd:, Guangdong Provincial Water Conservancy and Hydropower Third Project
Bureau Co:, Ltd:, China Machinery Research Institute of Standards and Technology (Beijing) Co:, Ltd:, Dongguan Dushi Chengfa Precision Spring Co:, Ltd:, Qingdao Mingchao Machinery
Machinery Co:, Ltd:, Guangdong Prima Industrial Co:, Ltd:, Dongguan Bilian Machinery Technology Co:, Ltd:, Yiwu Guojun Mould Co:, Ltd:, Nan'an
City China Machinery Standardization Research Institute Co:, Ltd:
The main drafters of this document are: Lu Xuegui, Yu Bo, Sun Qinghua, Dai Wenjie, Chen Guoliang, Zhang Xiuzhuo, Tan Junhua, Ye Qinci, Xia Yan, Zhao Maocheng,
Chen Huabin, Chen Wenbin, Wu Qu, Qin Peijun, Pang Xuejia, Tan Xin, Wang Liangzhong, Cao Gaohui, Wang Zhongheng, Huang Zhijiong, Curie Kai, Liu Zhiyong, Li Qin,
Zhao Bin, Liu Qi, Wang Henan, Ying Luyao, Chen Mingzhen, Fu Huiqing, Ju Ronghua, Chen Lu, Zhao Jianqi, Chen Zhuoxian, Zhang Siyuan, Jing Dongqing, Zhu Bin,
Li Mengtao, Zhang Lei, Zhong Jiuan, Li Zheng, Zhang Qun, Du Zhisheng, Fang Guihua, Wang Jiahui, Chen Jiaxing, Peng Bin, Lv Wenlong, Qiu Haojie, Chen Meng, Jiang Tao,
Zhang Yan, Li Zhong, Ji Yuguang, Fu Xiaoqin, Xu Haozhi, Zhang Lingfeng, Shang Fei, Cheng Hongbing, Zhang Xiaofei, Zheng Huating, and Wang Feng:
This document was first published in:2000 and this is the first revision:
Introduction
The structure of safety standards in the field of machinery is as follows:
--- Category A standards (basic safety standards) give basic concepts, design principles and general characteristics applicable to all machinery;
--- Class B standards (general safety standards) involve a safety feature of a machine or a type of safety device with a wide range of use:
● Category B1, standards for specific safety features (such as safety distance, surface temperature, noise);
● Category B2, safety device (such as two-hand control device, interlock device, pressure-sensitive device, protective device) standards;
---Category C standards (machinery product safety standards) are standards that specify detailed safety requirements for a specific machine or a group of machines:
According to GB/T 15706, this document belongs to Class B1 standard:
This document is particularly relevant to the following stakeholders involved in machinery safety:
---Machine manufacturer;
---Health and safety agencies:
Other stakeholders affected by the level of machinery safety are:
---Machine users;
---Machine owner;
---Service providers;
--- Consumer (for machinery intended for use by consumers):
All of the above stakeholders may participate in the drafting of this document:
Furthermore, this document is intended for use by standardization bodies drafting Type C standards:
The requirements specified in this document are supplemented or modified by Type C standards:
For machines within the scope of Category C standards and designed and manufactured in accordance with Category C standards, the requirements in Category C standards shall take precedence:
Whether or not a burn will occur when human skin comes into contact with a hot surface depends on the following factors:
---surface temperature;
---Surface material;
---The time of contact between skin and surface;
---Surface structure;
--- The sensitivity of the person (e:g: child or adult) who comes into contact with the surface:
Contact with hot surfaces can be intentional, such as when operating an electric or gas powered machine or tool, or unintentional, such as when a person is near a
When touching a hot object, the time it takes for an object to contact a hot surface will differ between intentional contact and unintentional contact: Considering human reaction time and
Its distribution in the population, 0:5s is the shortest applicable contact time for a healthy adult to accidentally touch a hot surface without getting burned:
For the application of this document, it is important to select the time that best represents the actual conditions when contacting hot surfaces:
Annex A gives the procedure for determining surface temperature limits using this document:
Machinery safety for determining the temperature of touchable hot surfaces
Safety data of limit values
1 Scope
This document specifies the burn thresholds for human skin in contact with hot surfaces of machines or workpieces and describes the methods used to prevent skin burns:
Method for determining the limit value of hot surface temperature for damage:
This document does not specify hot surface temperature limits for specific machines or workpieces, and does not give data to prevent pain:
This document applies to contacts where the surface temperature remains essentially constant during contact (see 4:1) and the contact time is not less than 0:5 s:
This document is not applicable to situations where large areas of skin, approximately 10% or more of the body, come into contact with hot surfaces:
This document also does not apply to contacts exceeding 10% of the head skin, or contacts that result in burns to important parts of the face:
NOTE: In some cases, the consequences of contact with hot surfaces may be more serious, for example:
---Burns that cause respiratory obstruction;
---Large burns covering 10% or more of the body's skin may damage the circulatory system due to loss of body fluids;
---Heating of a large proportion of the head or body may cause unacceptable heat stress even in the absence of burns:
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document:
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document:
GB/T 15706-2012 General principles for safety design of machinery - Risk assessment and risk reduction
3 Terms and definitions
The terms and definitions defined in GB/T 15706-2012 and the following apply to this document:
3:1
touchable hot surface
The surface of the machine or workpiece whose temperature is not less than 43°C and may be touched by the skin:
3:2
surface temperaturesurfacetemperature
Ts
The temperature of the machine or workpiece surface:
3:3
Contact time contactperiod
The duration of skin contact with the surface:
3:4
Thermal inertia
Properties of an object due to its heat transfer characteristics when it is heated or cooled:
NOTE: Thermal inertia is usually expressed as the product of the material’s density (ρ), thermal conductivity (K) and specific heat capacity (c):
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