GB/T 9237-2017 English PDF

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GB/T 9237-2017: [Including 2019XG1, 2020XG2] Refrigerating systems and heat pumps -- Safety and environmental requirements
Status: Valid

GB/T 9237: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9237-2017	2439	Add to Cart	12 days	[Including 2019XG1, 2020XG2] Refrigerating systems and heat pumps -- Safety and environmental requirements	Valid
GB 9237-2001	RFQ	ASK	5 days	Mechanical refrigerating systems used for cooling and heating -- Safety requirements	Obsolete
GB/T 9237-1988	RFQ	ASK	3 days	General technical code for refrigerating plants	Obsolete

Similar standards

GB/T 10079   GB/T 5773   GB/T 10870   GB/T 7941   GB/T 7778   

Basic data

Standard ID: GB/T 9237-2017 (GB/T9237-2017)
Description (Translated English): [Including 2019XG1, 2020XG2] Refrigerating systems and heat pumps -- Safety and environmental requirements
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J73
Classification of International Standard: 27.200
Word Count Estimation: 122,112
Date of Issue: 2017-12-29
Date of Implementation: 2018-07-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 9237-2017: [Including 2019XG1, 2020XG2] Refrigerating systems and heat pumps -- Safety and environmental requirements

---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.
[Including 2019XG1] Refrigerating systems and heat pumps-Safety and environmental requirements ICS 27.200 J73 National Standards of People's Republic of China Replace GB 9237-2001 Refrigeration systems and heat pump safety and environmental requirements (ISO 5149-1.2014,Refrigeratingsystemsandheatpumps-Safetyand environmentalrequirements-Part 1. Definitions, classificationandselection Criteria; ISO 5149-2.2014,Refrigeratingsystemsandheatpumps-Safety andenvironmentalrequirements-Part 2.Design,construction,testing, Markinganddocumentation; ISO 5149-3.2014,Refrigeratingsystems Part 3. Instalationsite; ISO 5149-4.2014,Refrigeratingsystemsand Part 4. Operation, maintenance, repairandrecovery, MOD) 2017-12-29 released.2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration issued

Content

Foreword V Introduction VII 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Abbreviations 11 5 Classification 11 5.1 Classification of the use of space 11 5.2 Classification of refrigeration systems 12 5.3 Classification of refrigeration system installation sites 16 5.4 Classification of refrigerants 17 6 Refrigerant dose of space 17 7 Space volume calculation 17 8 heat transfer fluid 17 8.1 Overview 17 8.2 Intake 17 8.3 Water and soil pollution 17 8.4 Personnel exposure (toxicity) 18 8.5 Pressure 18 8.6 Mark 18 8.7 freezing point 18 8.8 decomposition temperature 18 8.9 Flash point 18 8.10 Auto-ignition temperature 18 8.11 Thermal expansion 18 8.12 Corrosion protection 18 9 Parts and piping requirements 18 9.1 General requirements 18 9.2 Specific requirements for specific components 20 9.3 Material 20 9.4 Test 21 9.5 Marking and documentation 23 10 Assembly requirements 24 10.1 Overview 24 10.2 Design and Structure 24 10.3 Test 40 10.4 Marking and documentation 43 11 Installation location of refrigeration equipment 46 11.1 Overview 46 11.2 Refrigeration equipment installed in the open air 46 11.3 Refrigeration equipment installed in the equipment room 46 11.4 Refrigeration equipment installed in the use of space 46 11.5 Refrigeration equipment installed in non-designated equipment rooms in non-use areas 46 11.6 Refrigeration equipment installed in a confined space with ventilation in the use space 46 11.7 Pipe or pipe well 46 12 computer room 46 12.1 Use of machine room and dedicated machine room 46 12.2 Room ventilation 47 12.3 Combustion equipment and air compressors 47 12.4 Open fire 47 12.5 Storage 47 12.6 Remote emergency switch 47 12.7 External opening of the equipment room 47 12.8 Pipes and ducts 47 12.9 Normal lighting 47 12.10 Emergency Light 48 12.11 Dimensions and accessibility 48 12.12 Doors, walls and passages 48 12.13 Ventilation 48 12.14 Flammable refrigerant room (A2L, A2, B2L, B2, B3 and A3 categories) 49 13 Additional regulations required 50 13.1 Overview 50 13.2 Use space 50 13.3 Ventilation 50 13.4 Safety shut-off valve 51 14 Electrical installations 52 14.1 General requirements 52 14.2 Main Power Supply 52 14.3 Refrigeration system equipment room electrical equipment containing 2L flammable refrigerants 52 15 security alarm 52 15.1 Overview 52 15.2 Power System for Alarm System 52 15.3 Alarm System Alarm 52 15.4 Additional requirements for ammonia refrigeration alarm systems with a charge greater than 4500 kg 53 16 refrigerant detector 53 16.1 Overview 53 16.2 Refrigerant Detector Location 53 16.3 Refrigerant Detector Function 53 16.4 Types and performance of refrigerant detectors 53 16.5 Installation 54 17 Instruction manuals, warnings and inspections 54 17.1 Instruction Manual 54 17.2 Warning 54 17.3 On-site inspection 54 17.4 On-site maintenance 55 18 Heat source and temporary high temperature at the installation site 55 19 Operation, maintenance, overhaul and recycling 55 19.1 General requirements 55 19.2 Maintenance and overhaul 56 19.3 Recycling, reuse and disposal requirements 58 Appendix A (Normative Appendix) Installation location and charging capacity of the refrigeration system 64 Appendix B (Normative) Refrigeration Safety Classification and Related Information 71 Appendix C (informative) Potential hazards of refrigeration systems 80 Appendix D (informative) Terminology in English, French and Chinese 81 Appendix E (informative) Visual inspection project for refrigeration systems 85 Appendix F (Normative Appendix) Additional Requirements for Ammonia Refrigeration Systems and Heat Pumps 86 Appendix G (informative) Specification of component categories 87 Appendix H (Normative) Internal Safety Test Requirements 92 Appendix I (informative) Example of the arrangement of the pressure relief device of the refrigeration system 94 Appendix J (Normative) The equivalent length allowed for the exhaust pipe 97 Appendix K (informative) Stress corrosion cracks 99 Appendix L (Normative Appendix) Oil Discharge System for Refrigeration Systems 101 Appendix M (Informative) Guidelines for Recyclable Refrigerants (Elements) 102 Appendix N (informative) Use and storage of refrigerants 103 Appendix O (informative) In-use inspection 106 Appendix P (informative) Corrosion Test 108 Appendix Q (informative) Technical differences between ISO 149 and.2014 and their causes 109 Appendix R (informative) Structural changes in this standard compared to ISO 5149.2014 111 Reference 114

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB 9237-2001 "Safety Requirements for Mechanical Refrigeration Systems for Refrigeration and Heating", compared with GB 9237-2001, except The main technical changes outside the editorial changes are as follows. ---Adjusted the "use category" of the refrigeration system, and renamed it "classification of the use space", adjusted by the original A~E five use categories Use space for a, b, c; ---Adjusted the classification of the refrigeration system; --- Increased the classification of refrigeration system installation sites; --- Modified the classification of refrigerants, directly using the classification method of GB/T 7778-2017; --- Added requirements for the amount of refrigerant that can enter the space of use and calculation of the volume of space; --- Added requirements related to heat transfer fluids; --- Revised the.2001 version of the "design and manufacture of equipment" requirements; --- Added requirements for the installation of refrigeration equipment; --- Revised the.2001 version of the "use requirements"; --- Revised the.2001 version of the "running" requirements, adding new requirements for maintenance, overhaul and recycling; --- Removed the.2001 edition of Appendix A, and revised it to a new content "Installation site and charge of refrigeration system", clearly flammable Restrictions on the use of refrigerants; --- Modified and improved Appendix B, and added relevant information on refrigerant safety classification; --- Added Appendix C~Appendix R. This standard uses the redrafting method to modify the ISO 5149-1~5149-4.2014 "Refrigeration System and Heat Pump Safety and Environmental Requirements" Four parts. This standard has more structural adjustments than ISO 5149.2014. This standard and ISO 5149.2014 are listed in Appendix R. The chapter number is compared to the list. There are technical differences between this standard and ISO 5149.2014. The corresponding technical differences and their causes are given in Appendix Q. Watch list. This standard also made the following editorial changes. --- Removed the foreign flange standard for reference in 10.2.3.2 and revised it to refer to China's chemical industry standards; --- In the notes of 10.2.3.3 and 10.2.3.8, the foreign copper pipe standards for reference are deleted and revised to refer to the country of China. Standard GB/T 17791; --- Revised the name of Appendix A, from "installation place of refrigeration system" to "installation place and charge amount of refrigeration system"; --- Removed the formula for using imperial units in Appendix J, leaving only the formula for the International System of Units. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Refrigeration and Air Conditioning Equipment Standardization Technical Committee (SAC/TC238). This standard is drafted by. Hefei General Machinery Research Institute, China Refrigeration and Air Conditioning Industry Association, Tianjin University, Daikin (China) Investment Limited Company, Trane Air Conditioning System (China) Co., Ltd., Johnson Controls Building Equipment Technology (Wuxi) Co., Ltd., Qingdao Hisense Hitachi Air Conditioning Department Co., Ltd., Qingdao Haier Air Conditioning Electronics Co., Ltd., Guangdong Midea HVAC Equipment Co., Ltd., Nanjing Tianjia Air Conditioning Equipment Co., Ltd. Dongfennikz Energy Saving Equipment Co., Ltd. Participated in the drafting of this standard. Danfoss (Tianjin) Co., Ltd., Kunshan Taijia Electromechanical Co., Ltd., Chongqing General Industry (Group) Co., Ltd. Liability Company, Zhejiang Sanhua Refrigeration Group Co., Ltd., Zhejiang Dunan Artificial Environment Co., Ltd., Shanghai Mitsubishi Electric, Shangling Air Conditioner Electric Appliance Co., Ltd., Shenzhen McQuay Air Conditioning Co., Ltd., Zhuhai Gree Electric Co., Ltd., Honeywell (China) Co., Ltd., Jin Mechanical and Electrical Equipment (Suzhou) Co., Ltd., McQuay Air Conditioning Refrigeration (Wuhan) Co., Ltd. The main drafters of this standard. Zhang Mingsheng, Ma Jinping, Wu Junfeng, Ma Yitai, Zhang Jianqiang, Yu Zhonghai, Hu Xianghua, Chen Jingliang, Zhang Wenqiang, Guo De, Wu Guanghui, Yang Yahua, Liu Yuanhui, An Jinchang, He Hui, Huang Rui, Chen Yuzhong, Cai Peiyu, Lu Yun, Zhou Wei, Chen Jin, Cao Xia, Liu Wenyuan, Zhuo Peijun, Zhang Weijia. The previous versions of the standards replaced by this standard are. ---GB 9237-1988, GB 9237-2001.

Introduction

The chlorofluorocarbon (CFC) problem has accelerated the introduction of alternative refrigerants for industrial production. The emergence and fullness of new refrigerants and mixtures on the market The introduction of new security levels has contributed to the revision of this standard. The purpose of this standard is to promote the safe design, construction, disposal, installation and operation of refrigeration systems. This standard is directly related to the refrigeration system Life and property safety at the site and its vicinity. It includes specifications for the entire manufacturing system. This standard is used to reduce the hazards of refrigeration systems or refrigerants to life, property and the environment. These hazards and the physical and chemical properties of refrigerants The temperature and pressure of the refrigeration and refrigeration cycles are closely related (see Appendix C). Pay attention to common phenomena that cause damage to the compression system, such as high temperature exhaust, liquid hammer, mishandling, and corrosion, corrosion, and heat. The mechanical strength of the force, fatigue stress, liquid hammer, vibration, etc. is weakened. Corrosion requires special consideration of the special conditions of the refrigeration system due to alternating frosting, defrosting or covering insulation. In addition to R717, the refrigerants normally used are heavier than air. The refrigerant vapor should be prevented by properly arranging the vents and exhaust ports. The gathering. Mechanical ventilation by an oxygen-deficient alarm or refrigerant alarm is required in all equipment rooms. Refrigeration systems and heat pump safety and environmental requirements

1 Scope

This standard specifies the personal and property safety requirements and environmental protection requirements related to refrigeration systems and heat pumps, and establishes refrigeration systems. Procedures for operation, maintenance, overhaul, and refrigerant recovery. This standard specifies the classification and selection principles of refrigeration systems and heat pumps and the limits of refrigerant charge. This standard also specifies the requirements for the design, construction, and installation of refrigeration systems (including piping, components, materials, and auxiliary equipment that are directly connected to them). Preparation), as well as requirements related to testing, commissioning, marking and documentation. Secondary heat transfer in addition to safety devices associated with refrigeration systems The requirements for the loop are not included in this standard. This standard also specifies the safety requirements associated with the installation site, which may be due to the needs of the refrigeration system and its accessories. Yes, but not necessarily directly related. The safety and environmental requirements specified in this standard also relate to the operation, maintenance and overhaul of refrigeration systems, as well as various refrigerants and systems. Recycling, reuse and disposal of refrigerant oils, heat transfer fluids, refrigeration systems and their components. This standard applies to. a) fixed or mobile refrigeration systems of all sizes, including heat pumps; b) secondary cooling or heating system; c) the installation location of the refrigeration system; d) parts or added parts that have been replaced after adopting this standard, if their functions and capabilities have changed before and after; e) New refrigeration systems, retrofits of legacy systems, variant systems, systems for replacing refrigerants, and old systems that change locations. This standard does not apply to automotive air conditioning systems, nor to goods stored to prevent deterioration and contamination. 19.1.1.1, 19.1.1.2, 19.1.3, 19.2.1.1~19.2.1.4, 19.2.2, 19.2.3.1, 19.2.3.3 and 19.3.6 of this standard do not apply. A unitized system that is packaged at the factory and equipped with a power cord and complies with the GB 4706 series of standards.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 567.2 Safety devices for rupture discs - Part 2. Application, selection and installation GB/T 1047 Pipe element DN (nominal size) definition and selection (GB/T 1047-2005, ISO 6708.1995, MOD) GB/T 2894-2008 Safety signs and guidelines for their use GB 3836.8 Explosive atmosphere - Part 8. Equipment protected by "n" type (GB 3836.8-2014, IEC 60079-15.2010, MOD) GB 3836.15 Electrical equipment for use in explosive atmospheres - Part 15. Electrical installation in hazardous areas (except for coal mines) (GB 3836.15-2000, eqvIEC 60079-14.1996) GB 4706.13 Special requirements for safety refrigeration appliances, ice cream machines and ice machines for household and similar electrical appliances (GB 4706.13-2014, IEC 60335-2-24..2012, IDT) GB 4706.17 Safety requirements for electric motors and compressors for household and similar electrical appliances (GB 4706.17-2010, IEC 60335-2-34.2009, IDT) ......

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