Skip to product information
1 of 12

PayPal, credit cards. Download editable-PDF & invoice in 1 second!

GB 50987-2014 English PDF (GB50987-2014)

GB 50987-2014 English PDF (GB50987-2014)

Regular price $345.00 USD
Regular price Sale price $345.00 USD
Sale Sold out
Shipping calculated at checkout.
Quotation: In 1-minute, 24-hr self-service. Click here GB 50987-2014 to get it for Purchase Approval, Bank TT...

GB 50987-2014: Code for fire protection design of hydraulic engineering

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 mediumsized hydropower plants, pumping stations, sluices and navigation facilities of new construction, expansion and reconstruction of hydraulic engineering.
GB 50987-2014
NATIONAL STANDARD OF THE
PEOPLE 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 for special room shall not be opened;
5 The door of the special room and the cavern shall not be directly opened to the main building or directly to the plant;
6 After a fire, the air supply system within the special room and the cavern shall be shut down;
7 Accident oil storage and drainage facilities shall be provided in accordance with 6.1.6 and 6.1.7 of this Code;
8 Suitable fire extinguishing equipment shall be configured.
6.2.2 Non-combustible material shall be used to plug the pipe trenches and holes between transformer rooms, power distribution units, bus rooms, control rooms, relay protection screen rooms, communication rooms, computer rooms, DC screen rooms, etc., and the external ones. The fire endurance of the plugged part shall not be lower than the fire endurance of the structure or component of the part.
6.3 Cable
6.3.1 The cable room, cable tunnel and power cables and control cables that are laid overhead between the various unit sections shall be laid in layers. Between the upper and lower layers of the power cable, between the power cable layer and the control cable layer, a partition with a fire limit of not less than 0.5h shall be installed for separation. When all flame-retardant cables are used, they can be separated without spacers.
6.3.2 The following parts of the cable compartment, cable tunnel and cable channel shall be plugged. The fire resistance limit of the plugging part shall not be lower than the fire endurance of the structure or member of the part. And it shall not be lower than 1.0h:
1 Crossing (in) electrical equipment room, etc.;
7 Insulating oil and turbine oil system
7.0.1 The fire separation distance between open-air vertical tanks shall not be less than 40% of the larger tank diameter in adjacent vertical tanks. The fire separation distance between open-air horizontal tanks shall not be less than 0.8m.
7.0.2 The fire separation distance between indoor oil tanks shall not be less than 1.0m.
7.0.3 When the open-air tank is equipped with a facility to prevent liquid from escaping, the fire dam may not be provided. The sewer around the tank shall be closed. Set water seal facility at the entrance.
7.0.4 When there is no special accident oil draining and oil storage facility outside the plant, the oil retaining raft shall be installed. The effective volume in the oil retaining raft shall not be less than the volume of the largest one. When a fixed water spray fire extinguishing system is provided, the effective volume in the oil retaining raft shall also be added to the volume of the fire water. 7.0.5 The tank room shall not be set in the plant. If set, it shall comply with the following provisions:
1 A firewall shall be used between the tank room, the oil processing room or between other rooms;
2 The evacuation outlet of the tank chamber shall not be less than 2. However, if the area does not exceed 100m2, 1 can be set. Doors for exit shall use A1.50 fire doors;
3 The total tank capacity of a single tank chamber shall not exceed 200m3; 4 Set an oil retaining raft or a dedicated accident oil collection tank. Its volume shall not be less than the volume of the largest tank. When an automatic water spray fire extinguishing system is installed, the volume of fire water shall also be added;
5 The tank's accident oil drainage valves shall be able to operate in a safe zone. 7.0.6 Insulating oil and turbine oil piping shall not be laid in the same trench as the cable.
7.0.7 The oil tank compartment shall not be equipped with lighting switches and sockets. Luminaires shall be explosion-proof.
with the following provisions:
1 For fire backup pump, its working capacity shall not be less than 1 main water pump;
2 The fire pump shall adopt self-priming water absorption. There shall be no less than 2 suction pipes for each group of pumps. When one of them fails, the remaining suction pipes shall be able to pass all water consumption; 3 Each group of pumps shall have no less than 2 outlet pipes connected to the fire pipe network. When one of the outlet pipes is overhauled, the remaining outlet pipes shall be able to pass all water consumption;
4 Fire water tanks shall store 10min of fire water consumption. When the fire water consumption is less than or equal to 25L/s, when the fire water storage capacity required for the fire water tank is greater than 12m3, 12m3 can still be used. When the fire water consumption is greater than 25L/s, when the calculated fire water storage capacity of the fire water tank is greater than 18m3, 18m3 can still be used;
5 The setting elevation of the fire water tank shall meet the requirements of the most unfavorable point fire hydrant's normal water pressure. If it fails to meet the requirements, a booster facility shall be provided. If the booster facility uses a constant pressure pump, the water output shall be no less than 5L/s. If pneumatic water supply equipment is used, the adjustment volume of the pressure water tank is required to be not less than 300L;
6 Water tanks for fire water and other water use shall have technical measures to ensure that fire water is not used for other purposes. After the fire, the fire water supplied by the fire pump shall not enter the fire water tank.
8.2.4 The high-pressure water supply system that uses the water supply mode of the fire pool shall meet the following requirements:
1 The capacity of the firefighting pool shall meet the requirements for the amount of fire water determined in 8.1.3 of this Code during the duration of the fire. The fire duration shall be determined as: 120min for plant, 10min for hydro-generator, motor, 24min for oil-immersed transformer, large cable room, 30min for turbine oil and insulating oil tank, 60min for ship lock and ship lift;
2 When the fire pool capacity exceeds 500m3, it shall be divided into 2 grids. When it exceeds 1000m3, it shall be divided into 2 grids. The fire pool shall have no less than 2 outlet pipes connected to the fire protection network. When one has faults, the remaining trunks shall be able to pass all water consumption;
auxiliary plant, underground auxiliary plant, auxiliary plant within dam shall not be less than 13m. The filling water column of fire hydrant water gun of single- layer auxiliary plant and multilayer auxiliary plant shall not be less than 10m. 8.4.6 The setting of the outdoor fire hydrant shall meet the following
requirements:
1 The spacing between the main plant and other buildings along the plant shall not exceed 120m;
2 The spacing along the sides of the ship lock chamber shall not exceed 50m; 3 One fire hydrant shall be set respectively on each side of the lifter gate and on the upstream and downstream of the gate.
8.4.7 The setting of the indoor fire hydrant shall meet the following requirements: 1 The spacing between the generator layer or the motor layer fire hydrant in the main building shall not exceed 50m. It shall also be ensured that the water column with 2 water guns can reach any part of the layer at the same time. When the height of the generator layer or the motor layer from the ground to the top of the plant is more than 18m, only the parts of the bridge crane below the actual protection of the rail top can be guaranteed to have two water guns to fill the water column;
2 The setting and number of fire hydrants can be determined according to equipment layout and maintenance requirements in the generator building layer or the motor layer below the main building;
3 The fire hydrant spacing of the high-rise auxiliary plant shall not exceed 30m. The spacing between fire hydrants of other single-layer and multilayer
auxiliary plants shall not exceed 50m;
4 Fire hydrants shall be located in clearly accessible locations. The height of the bolt from the ground shall be 1.10m. The direction of the water shall be downward or at an angle of 90?? to the wall on which the fire hydrant is placed; 5 The fire hydrant box shall be equipped with a linkage trigger signal button for starting the fire pump.
8.5 Automatic fire extinguishing system
8.5.1 Automatic fire extinguishing system shall be set up in the following places. And water spray fire extinguishing system shall be used.
1 Generator with rated capacity of 12.5MVA and above;
2 Electric motor with rated power of 10MW and above;
shall not be less than 6L/(min ?€? m2);
3 The spray intensity of cable chamber, cable tunnel and cable shaft shall not be less than 13L/(min ?€? m2);
4 The spray intensity of insulating oil and turbine oil tanks shall not be less than 13L/(min ?€? m2).
8.6 Fire fighting equipment
8.6.1 Fire-fighting equipment such as mobile foam fire extinguishers and sand boxes shall be installed in the following places:
1 Near open-air tanks for insulating oil and turbine oil;
2 At entrance and exit of in-plant tank room or off-site tank room for insulating oil and turbine oil;
3 At entrance and exit of the indoor oil-filled equipment room;
4 Near outdoor substation, switch station, oil-filled equipment.
8.6.2 Mobile fire extinguishers shall be installed in the following locations: 1 Various types of electromechanical equipment;
2 Main plant sections and installation sites;
3 Overhead cable ...

View full details