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GB/T 27748.3-2017 English PDF (GBT27748.3-2017)

GB/T 27748.3-2017 English PDF (GBT27748.3-2017)

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GB/T 27748.3-2017: Stationary fuel cell power system -- Part 3: Installation

GB/T 27748.3-2017
Stationary fuel cell power system - Part 3.Installation
ICS 27.070
K82
National Standards of People's Republic of China
Replace GB/T 27748.3-2011
Stationary fuel cell power generation system
Part 3.installation
2017-09-07 released
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued by China National Standardization Administration
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 2
3 Terms and definitions 2
4 General safety requirements and strategies 4
5 Site selection considerations 4
6 Ventilation and exhaust 6
7 Fire protection and gas detection 7
8 Field port connection 7
9 Environmental requirements 8
10 Acceptance test 9
11 Maintenance test 9
12 File 9
Preface
GB/T 27748 "Stationary Fuel Cell Power Generation System" is divided into the following 4 parts. ---Part 1.Safety;
---Part 2.Performance test methods;
---Part 3.Installation;
---Part 4.Performance test method of small fuel cell power generation system. This part is Part 3 of GB/T 27748.
This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 27748.3-2011 "Stationary Fuel Cell Power Generation System Part 3.Installation". With GB/T 27748.3- Compared with.2011, the main technical changes are as follows.
--- Increase the scope of application of the standard to avoid overlap between IEC 62282-3-100 and IEC 62282-3-300 in terms of safety-related provisions; ---Update reference documents and definitions;
--- Delete the requirements for stationary fuel cell power generation systems, so that the target of this standard is focused on "installation risk"; ---Simplify the requirements of CO level for the situation where small fuel cell power generation system directly emits exhaust gas into the installed and reliable and safe simple shed; ---Modify the requirements for the use of combustible gas detection systems; ---Increase the reference to the gas valve standard ISO 23551-1.
The translation method used in this section is equivalent to IEC 62282-3-300.2012 "Fuel Cell Technology Part 3-300.Stationary Fuel Cell Power Generation System Installation". The Chinese documents that have consistent correspondence with the international documents cited in this section are as follows. ---GB 3836.14-2014 Explosive atmosphere Part 14.Site classification Explosive gas atmosphere (IEC 60079-10-1.2008, IDT) ---GB/T 5464-2010 Non-combustibility test method of building materials (ISO 1182.2002, IDT) ---GB/T 16856-2015 Machinery Safety Risk Assessment Implementation Guidelines and Examples of Methods (ISO /T R14121-2.2012, MOD) This part was proposed by China Electrical Equipment Industry Association. This part is under the jurisdiction of the National Fuel Cell and Flow Battery Standardization Technical Committee (SAC/TC342). Drafting organizations of this section. Shanghai Shenli Technology Co., Ltd., Wuhan Zhongyu Power System Technology Co., Ltd., Beijing Electrical Engineering Technology Co., Ltd. Institute of Technical Economics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Wuhan University of Technology, Shenzhen Institute of Standards and Technology, Nanjing University Kunshan Innovation Research Institute, Suzhou Fuersai Energy Technology Co., Ltd., Suzhou UL Meihua Certification Co., Ltd., Beijing Yihuatong Technology Co., Ltd. The main drafters of this section. Zhang Ruogu, Qi Zhigang, Hu Shaobo, Tian Chaohe, Hou Ming, Li Shang, Chen Zhanzhan, Pan Mu, Liu Jianguo, Hu Liqing, Gu Rongxin, Zhou Bin, Zhang He, Yu Hongmei, Xu Jiazhong, Wang Yiqun, Liu Shufen. The previous releases of the standards replaced by this part are as follows. ---GB/T 27748.3-2011.
Stationary fuel cell power generation system
Part 3.installation
1 Scope
This part of GB/T 27748 specifies the minimum safety requirements for stationary fuel cell power generation systems installed indoors and outdoors. The national standard GB/T 27748.1-2017 is applicable to the installation of the following systems. It is expected to be electrically connected to the main equipment directly or through easy-to-operate (fast) manual switches and circuit breakers; Anticipated independent power distribution system;
Expect to provide alternating current or direct current;
With or without recovery of available heat capacity.
This standard only applies to equipment and property that may cause personal injury or cause fuel cell power generation system equipment during the installation process. The situation of damage.
The safety of stationary fuel cell power generation systems involved in GB/T 27748.1-2017 is not included in this standard. Moreover, this standard does not include.
--- Fuel supply and/or fuel storage system;
---Supply and treatment of auxiliary media;
---Switch or circuit breaker;
---Portable fuel cell power generation system;
---Driven fuel cell power generation system;
---Auxiliary Power Generation System (APU).
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 27748.1-2017 Stationary fuel cell power generation system Part 1.Safety (IEC 62282-3-100.2012, IDT) IEC 60079-10 (all parts) Explosive gas atmosphere Part 10.Area classification 3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Accessible (operator access area)
Under normal operating conditions, an area that meets one of the following factors. ---Entry is allowed without using tools;
---Dedicated channel for operators;
---Regardless of whether tools are needed, guide the operator to enter. Note. Unless otherwise specified, the terms "access" and "accessible" operator access areas are defined as above. 3.2
Certification
Recognized by professional certification bodies.
3.3
Professional certification agency
Organizations, units or individuals that implement regulations or standards, or are responsible for approving equipment, materials, devices, or procedures. 3.4
Exhaust
Gas that is discharged from the fuel cell power generation system and is no longer used. 3.5
Exhaust system
A gas delivery system that transports gas from the source to the discharge point. 4 General safety requirements and strategies
The fuel cell power generation system and its related equipment, components and controllers should be installed in accordance with the manufacturer's regulations. According to the fuel cell The amount of fuel and other energy stored in the power generation system (e.g. flammable materials, pressurized media, electrical energy and mechanical energy, etc.) should be as reasonable as possible Avoid personal hazards or harm to equipment or property other than the fuel cell power generation system. General safety strategy for fuel cell power generation system installation It should be formulated in the following order.
--- Avoid the possibility of the release of flammable and/or toxic gases, and gases, liquids and solids that can cause pollution; ---When the above-mentioned energy or gas is suddenly released, try to avoid personal hazards or damage to the fuel cell power generation system and its installation as reasonably as possible Hazards to equipment or property other than those;
---For other hazards, provide appropriate safety signs.
Special attention should be paid to the following.
---Mechanical hazards. sharp surfaces, tripping hazards, moving quality and instability, material strength, pressurized liquids and gases; ---Electrical hazards. contact between the body and live parts, short circuit, high voltage; --- Thermal hazards. release of hot surfaces, hot liquids or gases, thermal fatigue; ---Fire and explosion hazard. flammable gas or liquid may produce explosive mixture under normal or abnormal operating conditions; under fault conditions, explosive mixture may be produced; ---Failure hazard. unsafe operation in the installation of related equipment caused by the failure of software, control circuits, protection/insurance components, or manufacturing defects or misoperation; ---Material and substance hazards. material wear, corrosion and embrittlement, release of toxic substances, suffocation hazard (for example, inert purge gas instead of oxygen); --- Hazards of waste disposal. disposal of toxic materials, recycling, disposal of flammable liquids and gases; ---Environmental hazards. unsafe operation in cold/hot environment, rain, flood, wind, earthquake, external fire, smoke. 5 Site selection considerations
5.1 General site selection
The fuel cell power generation system should meet the requirements of GB/T 27748.1-2017. The location of the fuel cell power generation system and its related equipment, components and controllers should be selected in accordance with the manufacturer's regulations, and meet the following requirements. ---The system should be placed in place and fastened so that it is not easy to be moved, shaken or displaced; ---Site selection should consider the necessary safety factors to protect the system and equipment from the adverse effects of wind and earthquakes. The system should be protected from rain, The adverse effects of snow, ice, water and/or low temperature, unless the system and installation equipment are designed for these conditions; --- If the installation site of large-scale power generation equipment needs to prevent unauthorized persons from entering due to the location and installation environment, fire exits should be provided; --- The system should be located outside the potentially hazardous environment defined in IEC 60079-10-1, unless it is a certified special equipment; ---The installation point of the power generation system and equipment should not adversely affect the exit of the building; ---The components of the power generation system and fuel cell power generation system and their respective vents or exhaust device ends should be connected to doors, windows, and outdoor The vents are separated from other passages into the building to prevent exhaust gas from entering the building; ---Exhaust openings facing sidewalks or other pedestrian walkways must not be dangerous; ---The location of the system should consider service, maintenance and emergency access; ---The location of the system should be far away from flammable materials, high accumulations and other flammable materials. Spacing and spacing should meet the relevant regulations of professional certification bodies; ---System site selection or protective measures should be able to avoid physical damage to moving vehicles or equipment; --- The placement of multiple power generation systems or the adoption of protective measures should ensure that when a fire occurs or one of the systems fails, it will not cause potential safety hazards to the adjacent power generation system; ---If the engineering analysis shows that the same safety level is reached, the requirements of this clause are unnecessary, and an alternative approved by a professional certification body shall be provided; ---The discharged liquid and vapor should be treated in accordance with the requirements of professional certification bodies; ---When installing a fuel cell power generation system that requires drainage, the floor should be waterproofed, drainage pipes should be installed, and other appropriate measures should be taken. 5.2 Outdoor installation
5.2.1 Air inlet and outlet
The air inlet and outlet of the fuel cell power generation system should be placed so that the system will not be damaged by other wastes, gases and pollutants. position. The air intake of the fuel cell power generation system should be kept unobstructed to prevent the agglomeration of solids, dust, water, ice or snow from affecting its ventilation capacity. 5.2.2 Air intake and exhaust
The air intake and exhaust of the fuel cell power generation system must not affect the passage of pedestrians on footpaths or other pedestrian walkways. 5.2.3 Exhaust port
The fuel processing area of the fuel cell power generation system or the exhaust port of fuel-containing components, including the safety valve outlet, shall not be affected Building heating, ventilation, air-conditioning inlets, windows, doors and other building openings. 5.2.4 Area around the exit
The fuel processing outlet or the outlet of fuel-containing parts and the area around the safety valve outlet shall be carried out in accordance with IEC 60079-10-1 Assessment.
5.2.5 Barrier fence
Safety barriers, fences, landscaping and other fences should not affect the air entry or exhaust gas of the fuel cell power generation system and its components. discharge.
5.3 Indoor installation
5.3.1 General
The indoor fuel cell power generation system and its related components should be installed in a room that meets relevant national standards. 5.3.2 Small fuel cell power generation system
For small fuel cell power generation systems, refractory partitions are not required. 5.4 Roof installation
5.4.2 The materials within 30cm below the horizontal line of the fuel cell power generation system and its components shall be non-combustible materials, or certified The material of the roof fire rating specified by the state. Except for fuel cell power generation systems that comply with 5.12b) of GB/T 27748.1-2017. 6 Ventilation and exhaust
6.1 General
All indoor fuel cell power generation systems should be equipped with adequate ventilation and exhaust systems. The inlet and outlet of the ventilation and exhaust system shall meet the requirements of 5.2.1, 5.2.2 and 5.2.3. 6.2 Ventilation
The air supplied to the room where the fuel cell is located (whether from the vicinity of the fuel cell system, adjacent room or outdoors) can be used for communication Air for wind, air for system operation or both. The air should be supplied by mechanical ventilation system or natural ventilation according to the manufacturer's installation guidelines. If forced ventilation is required for safety reasons under normal operating conditions, a control interlock device should be provided. In the case of ventilation failure, The device can issue a warning and/or shut down the fuel cell power generation system. 6.3 Exhaust system
6.3.1 General
The fuel cell power generation system should be equipped with a special exhaust system to exhaust the exhaust gas to the outdoors in accordance with the requirements of GB/T 27748.1-2017. 6.3.2 Small fuel cell system
The small fuel cell power generation system can be directly exhausted into the working room, as long as the working room. a) Not in contact with the building, or connected to the building but without direct access to the working area of the building personnel. b) There is an interlocking ventilation system or natural ventilation to ensure sufficient ventilation under any circumstances and avoid. 1) Under normal working conditions, the volume concentration of CO in the air exceeds 50×10-6; 2) The combustible gas exceeds 25% of the corresponding LFL, and
3) The oxygen concentration is less than 18%.
6.4 Purge and exhaust procedures
6.4.1 Gases from pressure bottles, pipelines that are expected to be purged, pressure regulators, pressure relief valves and other possible sources of flammable gas shall be in accordance with 5.2.3 The regulations are discharged to the outside of the building. For small fuel cell power generation systems, it is allowed to purge into the indoor air, as long as the corresponding indoor air LFL does not exceed 25%, and the volume concentration of CO in indoor air does not exceed 50×10-6. 6.4.2 The design of the exhaust port should be able to prevent the entry of water or other external objects. 7 Fire protection and gas detection
7.1 Fire protection and detection
7.1.1 On-site fire protection
The site where combustible or combustible liquid fuel is stored shall be protected against fire in accordance with national regulations. 7.1.2 Detection of flammable gas (indoor installation only)
7.1.2.1 The combustible gas detection system shall be installed in the enclosure of the fuel cell power generation system, or in the exhaust system of the fuel cell power generation system, or The person is in the room where the system is located. The location of the indoor gas detection system in the room should be selected where it can provide early warning when combustible gas appears. The location of the gas detector should follow the requirements of IEC 60079-29-2. The requirements for gas sensors are specified in IEC 60079-29-1.
The combustible gas detection system may not be installed for the fuel cell power generation system in the following situations. ---The fuel is odorous gas, or
---The fuel is unodorized gas, such as hydrogen, which comes from gas cylinders with a limited volume. According to relevant national regulations, these gas cylinders can be stored in A particularly ventilated room.
7.1.2.2 The combustible gas detection system shall meet the following criteria. a) The combustible gas detection system should be set to alarm at 25% lower flammable limit (LFL), and the fuel can be interlocked to shut down at 50% LFL Fuel supply for battery power generation system.
b) The LFL used should be the lowest flammable limit of the gas or gas mixture. 7.1.2.3 For all indoor or independently enclosed gas compressors, combustible gas detectors meeting the requirements of 7.1.2.2 shall be provided. For alone Vertical closed gas compressors, such as indoor ventilation, can ensure that the concentration of combustible gas is less than 25% LFL, except for the above requirements. 7.1.2.4 If it is an unodorized gas, such as hydrogen, which enters the room through a pipeline from the outside or the place where the equipment is installed, the fuel cell power generation system The room or area to be installed shall be equipped with a combustible gas detector that meets the requirements of 7.1.2.1.The combustible gas detection system shall be in accordance with 7.1.2.2 Provisions are made to alarm or shut down the fuel supply separately.
7.2 Fire prevention and emergency plan
For the installation of large fuel cell power generation systems, there should be a written fire prevention and emergency plan. There is no requirement for small fuel cell power generation systems. 8 Field port connection
8.1 General
All connections between the site ports and the fuel cell power generation system, including pipes, wires, disconnects and conduits, should comply with relevant national standards. 8.2 Connection of fuel supply --- general rules
The installation and location of equipment at the downstream interface point of the fuel supply system and related fuel pipelines, including the necessary components and their The connection of the fuel cell power generation system shall meet this clause. 8.3 Fuel cut and delivery
8.3.1 For indoor installations, the accessible manual shut-off valve should be located indoors or within 1.8m upstream of the fuel cell power generation system, unless the The power generation system is installed in a fireproof room; in the latter case, the shut-off valve should be placed outdoors. A second shut-off valve can be installed in the room for maintain. If the second shut-off valve cannot be provided, and the shut-off valve is located ...

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