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GB 50987-2014 PDF EnglishSearch result: GB 50987-2014
GB50987-2014: PDF in EnglishGB 50987-2014 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA UDC P GB 50987-2014 Code for fire protection design of hydraulic engineering ISSUED ON: DECEMBER 02, 2014 IMPLEMENTED ON: AUGUST 01, 2015 Issued by: Ministry of Housing and Urban-Rural Development of the People's Republic of China; General Administration of Quality Supervision, Inspection and Quarantine. Table of Contents Announcement ... 5 Foreword ... 6 1 General provisions ... 8 2 Terms ... 9 3 Classification of production fire hazard and fire resistance rating ... 10 4 General layout ... 13 4.1 Fire separation distance ... 13 4.2 Fire lanes and rescue facilities ... 14 5 Building ... 16 5.1 Fire compartment ... 16 5.2 Safety evacuation ... 16 6 Electrical equipment ... 19 6.1 Outdoor electrical equipment ... 19 6.2 Indoor electrical equipment ... 21 6.3 Cable ... 21 7 Insulating oil and turbine oil system ... 23 8 Fire water supply and fire-extinguishing installation ... 24 8.1 General requirement ... 24 8.2 Water supply facilities ... 24 8.3 Indoor, outdoor fire water supply ... 26 8.4 Fire hydrant ... 27 8.5 Automatic fire extinguishing system ... 28 8.6 Fire fighting equipment ... 30 9 Ventilation, heating, smoke control and exhaust ... 31 9.1 Ventilation and heating ... 31 9.2 Smoke control and exhaust ... 31 10 Fire fighting electrical system ... 33 10.1 Power supply for fire fighting ... 33 10.2 Emergency lighting, evacuation sign ... 33 10.3 Automatic fire alarm system ... 33 10.4 Lightning and grounding ... 36 Explanation of wording in the code ... 37 List of quoted standards ... 38 Code for fire protection design of hydraulic engineering 1 General provisions 1.0.1 This Code was prepared in order to prevent fires in hydraulic engineering, reduce fire hazards, and protect personal and property safety. 1.0.2 This Code is applicable to the fire protection design of large and medium- sized hydropower plants, pumping stations, sluices and navigation facilities of new construction, expansion and reconstruction of hydraulic engineering. 1.0.3 The fire protection design of hydraulic engineering shall proceed from the overall situation and make overall considerations to ensure safety, application, advanced technology and economic rationality. 1.0.4 In addition to complying with this Code, the fire protection design of hydraulic engineering shall also comply with the relevant national standards. 2 Terms 2.0.1 ground plant (powerhouse or pump house) a hydroelectric power plant or pumping station that the motor layer or the installation floor can be directly connected to the external road, and the doors and windows are directly connected to the atmosphere 2.0.2 plant within dam a hydroelectric power plant or pumping station plant that is located in the cavity of the retaining dam body 2.0.3 underground plant a hydroelectric power plant or pumping station plant that is set up in underground cavern 2.0.4 main plant the general name for the installation of the hydro-generator unit or pump unit and its auxiliary equipment, and the installation room for installation and maintenance work 2.0.5 auxiliary plant other electromechanical equipment rooms other than the main plant, as well as work and living rooms for operation, maintenance, testing and management 2.0.6 multilayer auxiliary plant auxiliary plant with two floors and above, of which the building height is less than or equal to 24.0m 2.0.7 high-rise auxiliary plant auxiliary plant with two floors and above, of which the building height is greater than 24.0m 4 General layout 4.1 Fire separation distance 4.1.1 The fire separation distance between adjacent buildings in the hub shall not be less than that specified in Table 4.1.1. Table 4.1.1 -- Fire separation distance between adjacent buildings in the hub (m) Building type Level IV, V building Off-site tank room or open- air tank High-rise auxiliary plant Office, living building Fire resistance level Fire resistance level Level I, II Level III Level I, II Level III Le ve l IV , V bu ild ing Fir e r es ist an ce lev el Level I, II 10 12 12 13 10 12 Level III 12 14 15 15 12 14 Off-site tank room or open-air tank 12 15 - 15 15 20 High-rise auxiliary plant 13 15 15 - 13 15 Of fic e, liv ing bu ild ing Fir e r es ist an ce lev el Level I, II 10 12 15 13 6 7 Level III 12 14 20 15 7 8 NOTES: 1 The fire separation distance shall be calculated according to the nearest distance of the adjacent building's external wall. If the external wall has a protruding combustion member, it shall be counted from the outer edge of its convex portion. 2 Two buildings shall be level IV, V buildings with level I, II fire resistance. When the adjacent lower side external wall is a firewall and the fire resistance limit of the building roof is not less than 1h, the fire separation distance shall not be less than 4.0m. 3 For two adjacent buildings, when the higher side is firewall, the fire separation distance is not limited. 4.1.2 The fire separation distance between the outdoor main transformer field and the building, the off-site tank room or the open-air tank shall not be less than the requirements of Table 4.1.2. 5 Building 5.1 Fire compartment 5.1.1 The maximum allowable floor space for fire compartment of the main plant and multilayer auxiliary plant is not limited. 5.1.2 The maximum allowable building area for each fire compartment of the high-rise auxiliary plant shall not exceed 4000m2. The maximum allowable building area for each fire compartment of underground auxiliary plant, auxiliary plant within dam shall not exceed 2000m2. 5.1.3 When a level III production site is set within a factory building with level IV fire hazard, it shall use non-combustible partition wall with a fire endurance of not less than 2.00h and non-combustible floor slab with a fire resistance of not less than 1.50h to separate it from other parts. The door shall be A1.50 fire- proof door, equipped with corresponding firefighting facilities. 5.1.4 The fire compartment division of other buildings shall comply with the provisions of current national standard GB 50016 “Code of Design on Building Fire Protection and Prevention”. 5.2 Safety evacuation 5.2.1 Safety exits shall be decentralized. For each fire compartment, each floor of one fire compartment, the horizontal distance between the nearest edges of the two adjacent safety exits shall not be less than 5.0m. 5.2.2 The safety exits and evacuation walkways of hydropower plants and pumping stations for hydraulic engineering shall comply with the following provisions: 1 The generator floor or motor layer of the ground plant shall have no less than 2 safety exits that are directly connected to outdoor ground; 2 There shall be 2 safety exits in the generator floor or motor layer of the underground plant and the plant within dam. And there is at least 1 that is directly connected to outdoor ground. The incoming traffic tunnel can be used as a safe exit to the outdoor ground; 3 The safety exit of the whole plant operation corridor below the generator floor or motor layer in the plant shall not be less than 2. And the evacuation distance shall not exceed 60m; 4 The distance from the farthest working place in the floor below the generator layer or motor layer to the nearest safety exit of the floor shall not exceed 60m; 6 Electrical equipment 6.1 Outdoor electrical equipment 6.1.1 The fire separation distance between oil-immersed transformer or oil- immersed reactor with a capacity of 2500 kg or more shall not be less than the requirements of Table 6.1.1. Table 6.1.1 -- Fire separation distance between oil-immersed transformer or oil-immersed reactor (m) Voltage level 35kV and less 66kV 110kV 220kV~500kV 35kV and less 5 6 8 10 66kV 6 6 8 10 110kV 8 8 8 10 220kV~500kV 10 10 10 10 6.1.2 The fire separation distance between oil-immersed transformer or reactors with oil quantity of 2500kg and above and other oil-filled electrical equipment shall not be less than 5.0m. The fire separation distance between the oil-immersed transformer or reactor with a capacity of 2500 kg or less and other oil-filled electrical equipment shall not be less than 3.0m. 6.1.3 When the fire separation distance between two adjacent oil- immersed transformers or between oil-immersed reactors, the fire separation distance between oil-immersed transformer and oil-filled electrical equipment does not meet the requirements of 6.1.1 and 6.1.2 of this Code, firewall separation shall be set. The firewall settings shall meet the following requirements: 1 The height shall be 0.3m higher than the top of the transformer oil pillow or the oil-immersed reactor oil pillow; 2 The length shall not be less than the sum of oil storage pit side length and 1.0m respectively to both sides; 3 The distance from the outer edge of the oil storage pit shall not be less than 0.5m. 6.1.4 When the distance between the outer wall of the plant and the outer edge of the outdoor oil-immersed transformer is less than that specified in Table 4.1.2 of this Code, the external wall shall be a firewall. And the distance from the outer edge of the transformer shall not be less than 0.5m. For the firewall within 5.0m from the outer edge of the oil-immersed transformer, within the range of the total height of the transformer plus 6.2 Indoor electrical equipment 6.2.1 Oil-immersed main transformer shall not be installed in the plant. If set, the following rules shall be met: 1 It shall be set in a dedicated room and a cavern with level I fire resistance; 2 The wall of the dedicated room and the cavern shall be a firewall; 3 The doors of special rooms and caverns shall adopt A1.50 fire doors or fire shutters with a fire limit of not less than 2.0h; 4 The windows fo.......Source: https://www.ChineseStandard.net/PDF.aspx/GB50987-2014 |