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GB/T 23819-2023 English PDF (GBT23819-2023)

GB/T 23819-2023 English PDF (GBT23819-2023)

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GB/T 23819-2023: Safety of machinery - Fire prevention and fire protection

GB/T 23819-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.110
CCS J 09
GB/T 23819-2023 / ISO 19353:2019
Replacing GB/T 23819-2018
Safety of machinery - Fire prevention and fire protection
(ISO 19353:2019, IDT)
ISSUED ON: SEPTEMBER 07, 2023
IMPLEMENTED ON: SEPTEMBER 07, 2023
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 Fire hazards ... 11
4.1 General ... 11
4.2 Combustible materials ... 12
4.3 Oxidizers ... 12
4.4 Ignition sources ... 12
5 Strategy for fire risk assessment and risk reduction ... 12
5.1 General ... 12
5.2 Determination of the limits of the machinery ... 14
5.3 Identification of fire hazards ... 15
5.4 Risk estimation ... 16
5.5 Risk evaluation ... 18
5.6 Risk reduction ... 18
6 Procedure for the selection of complementary protective measures ... 22 6.1 General ... 22
6.2 Selection of the fire prevention and protection system in relation to the expected risk level ... 23
7 Information for use ... 26
Annex A (Informative) Examples of machines and their typical fire-related hazards 28 Annex B (Informative) Example of a methodology for selecting and qualifying a fire detection and fire suppression system ... 29
Annex C (Informative) Example for the design of a fire suppression system integrated in machinery ... 44
Annex D (Informative) Examples of ignition sources ... 46
Annex E (Informative) Example for the risk assessment and risk reduction of a machining centre for the machining of metallic materials ... 48
Annex NA (Informative) Examples of factors affecting selection of fire extinguishing agent ... 62
Bibliography ... 64
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces GB/T 23819-2018 Safety of machinery - Fire prevention and protection. Compared with GB/T 23819-2018, in addition to structural adjustments and editorial changes, the main technical changes of this document are as follows: -- Delete some terms and definitions (see Clause 3; Clause 3 of the 2018 edition); This document is identical to ISO 19353:2019 Safety of machinery - Fire prevention and fire protection.
The following minimal editorial changes are made to this document:
-- Add Figure C.2 to Appendix C;
-- Add the informative appendix NA.
Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying patents. This document shall be under the jurisdiction of National Technical Committee 208 on Mechanical Safety of Standardization Administration of China (SAC/TC 208). Drafting organizations of this document: Dongguan Villo Environment Protection Inc., Guangzhou Changke Safety Emergency Technology Co., Ltd., Anhui Hanhe Electric Co., Ltd., Hebei DingRun Intelligent Equipment Manufacturing Co., Ltd., Xiamen Weihaotai Technology Co., Ltd., Huzhou Nanxun District Baitong Standardization Research Institute, China Productivity Center for Machinery, Beijing Machinery Equipment Research Institute, Sichuan Shuxing Youchuang Safety Technology Co., Ltd., Shandong Jiechuang Machinery Co., Ltd., Beijing Xinli Machinery Co., Ltd., Nanjing Forestry University, Beijing Institute of Remote Sensing Equipment, Research Institute 703 of China State Shipbuilding Corporation, Pilz Electronics (Changzhou) Co., Ltd., Guangzhou Academy of Special Equipment Inspection and Testing, Nanjing University of Science and Technology, Guangdong Polytechnic Normal University, Aohuang Testing Technology Service (Shanghai) Co., Ltd., Guangzhou Robusaly Security Technology Development Co., Ltd., Zhejiang Shijing Tools Co. Ltd., Shenzhen Haodi Pure Electric Vehicle Technology Co., Ltd., GAC Honda Automobile Co., Ltd., Fujian Minxuan Technology Co., Ltd., Guangdong Nangui Crane Machinery Co., Ltd., Shaanxi Xiejia Yaguang Software Co., Ltd., LAPLACE Renewable Energy Technology Co., Ltd., Shandong Analysis and Testing Center, Jinhua Sanhuan Welding Materials Co., Ltd., Nan’an Zhongji Standardization Research Institute Co., Ltd., Shenzhen Justtide Tech Co., Ltd., Shaanxi Fanbiao Software Co., Ltd., Yiwu Jinglong Safety of machinery - Fire prevention and fire protection
1 Scope
This document specifies methods for identifying fire hazards resulting from machinery and for performing a risk assessment.
This document gives the basic concepts and methodology of protective measures for fire prevention and protection to be taken during the design and construction of machinery. The measures consider the intended use and reasonably foreseeable misuse of the machine.
This document provides guidelines for consideration in reducing the risk of machinery fires to acceptable levels through machine design, risk assessment and operator instructions.
This document is not applicable to:
— mobile machinery;
— machinery designed to contain controlled combustion processes (e.g., internal combustion engines, furnaces), unless these processes can constitute the ignition source of a fire in other parts of the machinery or outside of this;
— machinery used in potentially explosive atmospheres and explosion prevention and protection; and
— fire detection and suppression systems that are integrated in building fire safety systems.
This document is also not applicable to machinery or machinery components manufactured before the date of its publication.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 15706-2012, Safety of machinery – General principles for design – Risk assessment and risk reduction (ISO 12100:2010, IDT)
Examples of machine limits that are useful in fire risk assessment are as follows: — intended use and reasonably foreseeable misuse of the machine;
— properties of materials processed by the machine;
— machine operating modes;
— anticipated levels of training, experience or ability of the machine operators, maintenance personnel, and where appropriate the general public;
— the level of awareness of fire hazards by those persons likely to be exposed to the fire hazards;
— the anticipated life of the machine and its components and the impact of ageing with respect to creation of fire hazards;
— recommended service intervals;
— housekeeping and level of cleanliness as potential contributors to a fire hazard; — the environment in which the machine is expected to be operated (e.g., dry, dusty, humid, hot, cold conditions).
5.3 Identification of fire hazards
Following the determination of the limits of the machinery, reasonably foreseeable fire hazards shall be identified, taking into consideration the phases of machinery life in which a fire hazard can be present.
Note: See Clause 4 for a general discussion on the nature of fire hazards. All reasonably foreseeable fire hazards associated with the various uses of the machine shall be identified. The hazard can be identified according to the fire loads and ignition sources (see Figure 4).
For the determination of fire scenarios according to fire loads and ignition sources and for an estimation of the fire risk, the procedures outlined in ISO 12100 shall be followed. The procedure provides a sequence of logical steps allowing systematic examination of the fire hazards arising from the machinery and/or the work process (see Figure 3). Identification of fire hazards shall include the following steps:
— identification of intended and reasonably foreseeable operating conditions; — identification of combustible and/or flammable materials that are related to the fire hazard (all materials involved in the machine and process, including raw and process materials);

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