GB 46765-2025 Basic safety technical requirements of gas transmission and distribution equipment English, Anglais, Englisch, Inglés, えいご
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ICS 55.200
CCS H 57
National Standard of the People's Republic of China
GB 46765-2025
Basic safety technical requirements of gas transmission and distribution equipment
燃气输配设备安全基本技术要求
Issue date: 2025-10-31 Implementation date: 2026-11-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 Common Requirements
5.1 General Requirements
5.2 Safety Requirements for Control Systems
5.3 Safety Requirements for Hydraulic and Pneumatic Systems
5.4 Electrical Safety Requirements
5.5 Safety Requirements for Emergency Stop Devices
5.6 Safety Requirements for Robotic Equipment
5.7 Safety Requirements for Remote Services
5.8 Protection Against Crushing Hazards
5.9 Protection Against Cutting Hazards
5.10 Protection Against Entanglement Hazards
6 Supplemental Requirements for Dedicated Packaging Equipment and Devices
7 Responsibilities
7.1 Manufacturer
7.2 User
References
1 Scope
This document specifies the basic safety technical content of the requirements for the market, engineering construction, and putting into use of gas transmission and distribution equipment.
This document applies to the basic safety quality control of gas transmission and distribution equipment.
Note: The gas transmission and distribution equipment mentioned in this document includes purification equipment, heat - exchange equipment, pressure - regulating equipment (flow/pressure control equipment), gasification equipment, mixing equipment, metering equipment, valves, pipelines and components, odorization devices, safety protection devices, monitoring and control devices, etc., hereinafter referred to as “gas equipment”.
2 Normative References
This document has no normative references.
3 Terms, Definitions, and Abbreviations
3.1 Terms and Definitions
This document has no terms that need to be defined.
3.2 Abbreviations
The following abbreviations apply to this document.
CNG: Compressed Natural Gas (compressed natural gas)
ESD: Emergency Shutdown Device (emergency shutdown device)
LNG: Liquefied Natural Gas (liquefied natural gas)
LPG: Liquefied Petroleum Gas (liquefied petroleum gas)
4 Market, Engineering Construction, and Putting into Use
4.1 Gas equipment should be designed and manufactured in accordance with this document, installed correctly, and used within the expected range.
4.2 Gas equipment and its accessories and spare parts should be designed and manufactured in accordance with relevant standards and specifications. They can only be put into the market or used in engineering construction after being inspected and proven to comply with the product standards declared by the manufacturer.
4.3 Before gas equipment is put into the market or used in engineering construction, the user of the equipment should ensure that the usage conditions meet the design parameters of the equipment, such as gas quality, working pressure, and working temperature.
4.4 After gas equipment is put into the market or used in engineering construction, the manufacturer should keep technical documents and quality certification documents. The storage period should not be less than the service life.
4.5 Before the installation of gas equipment, the appearance and integrity should be checked. Pressure vessels, pressure pipelines, safety valves, detection instruments, and other equipment and components should be inspected, calibrated, or verified in accordance with relevant regulations.
4.6 The installation of gas equipment should be carried out by professional technical personnel. Debugging personnel and operation personnel should receive professional training or be guided on - site by professional technical personnel of the manufacturer.
4.7 When gas equipment is in normal use, if it is proven that the product has defects that endanger personal health or property safety, products with the same defects should not continue to be put into the market and circulation.
4.8 When gas equipment has safety risks, the manufacturer should conduct sampling inspections and in - depth investigations on the existing gas equipment in the market, carry out risk assessments, and take corresponding corrective and preventive measures based on the assessment results.
4.9 When gas equipment does not meet the requirements of this document, the manufacturer should immediately take necessary corrective measures to make it meet the requirements.
4.10 Gas equipment should have model numbers, batch numbers, serial numbers, or other identifiable information. When the size or nature of the gas equipment does not allow it, the information should be provided in the packaging or accompanying documents. The equipment nameplate should indicate the manufacturer, the standard implemented, the production date, and key technical parameter information.
4.11 Gas equipment should have installation and user manuals and safety warning labels. The manuals and safety warning information should be clear and accurate.
4.12 Gas equipment should be installed, used, and maintained in accordance with the instructions and relevant standards.
4.13 The user of the equipment should establish systems for the operation, maintenance, repair, and emergency repair of equipment such as pressure regulators, filters, and safety cut - off valves to ensure the normal use of the equipment.
4.14 Gas equipment should ensure personal and public safety, meet the quality requirements of gas engineering construction, and meet the normal operation requirements of the gas system.
4.15 The user of the equipment should regularly assess the working state of gas equipment based on the operating conditions, performance data, maintenance conditions, and safety inspections, to determine whether to continue or exit the use. After gas equipment has been affected by natural disasters, a risk assessment should be conducted on the gas equipment and its usage environment and infrastructure. The equipment can only be put into operation again after safety is confirmed.
5 Requirements
5.1 General Requirements
5.1.1 General Provisions
5.1.1.1 The design, manufacture, inspection, and assembly (if applicable) of gas equipment should be carried out in accordance with the technical documents of the manufacturer, and ensure safety under reasonable and foreseeable conditions.
5.1.1.2 The manufacturer should analyze the risks of gas equipment and design and manufacture it based on the consideration of risks. The manufacturer should determine appropriate solutions in the following order and principles:
a) Prioritize inherent safety design and manufacture;
b) Eliminate or reduce risks as much as possible through design optimization, process improvement, etc.;
c) Take protective measures for risks that cannot be completely eliminated;
d) Inform users of the potential risks after protective measures are taken and explain the need to take corresponding preventive measures.
5.1.1.3 The manufacture of gas equipment should take into account the expected usage conditions and reasonable and foreseeable usage conditions of the gas equipment.
