Article 70 the fire control design and construction points for attention, you know?

The mechanical and electrical professional fire protection design

1, multi-story buildings and high-rise industrial building each fire zone of each layer when the ventilation and air conditioning system are independent setting, are protected within the fire zone, return air duct with manifold junction don't set fire damper; 2, fire emergency lighting and evacuation indicating mark accumulator can be used as a backup power, but a continuous power supply time should not be less than 20 min; 3, fire lighting should be set up in the following closed stairwells, and its former room, the smoke prevention stair well before the fire elevator room; 4, according to the rules should be set or closed stairs stairwells building evacuation aisle; 5, and evacuation in emergency lighting, the minimum illumination should not be less than 0.5 lx. Fire control room, fire water pump house, self-provided generator room lighting, were on the fire distribution circuit; 6, directional signs should be placed on the tops of the exit or evacuation aisle and the corner high from the ground 1 m on metope, under the direction on the footpath sign spacing should not be more than 20 m.

Automatic fire alarm and control room

7, alarm area according to the fire protection division, an alarm area can have a few fire zone; 8, automatic fire alarm system in the form of: concentrated alarm system: area alarm system; Alarm system of control (CDC), an area alarm controller can alert multiple floors (see the features of the product) installation position from the ground 1.3-1.5 meters, alarm telephone installation location 1.3 1.5 meters; 9, building area of more than 500 m underground shops should set automatic fire alarm system; 10, independent set of fire control room, the fireproof grade should not be lower than 2. Using refractory limit of not less than 3 h respectively partition wall and floor 2 h, and is separated from other parts and set up the direct outdoor security export; 11, control room should be set to the following functions: accept fire alarm and fire of sound and light signals, accident radio and safe evacuation instructions, such as: fire pump control, fixed extinguishing equipment, ventilation and air conditioning system, electric fire doors, valves, fire shutter, smoke exhaust facilities. According to power supply, fire elevator operation, etc.; 12, fire alarm button is installed on the ground 1.3-1.5 meters;

13, alarm line set aside 100-100 mm in length, tie into beam, + red and blue line/black; 14, alarm line should not have joint, knot, laying wire connection should be within the terminal box with a terminal or welding connection (each terminal connection does not exceed 2 root), inside and outside the box and nut. Different voltage, current, different circuits and systems, different categories of line can't put inside with a trough; 15, trough every 1.5 m set hanger and bracket, hanging rod is not less than 6 mm; 16, fire power supply should be dedicated power supply, do not allow the splice joint; 17, control room door open in the direction of evacuation, back to the duct but should add fire damper are allowed. Forbidden is electrical wiring through the console leave around 1 m channels and maintenance; 18, the function of the fire control: control opening and closing of the fire-fighting equipments; Fire pump, smoke prevention and smoke extraction fan switch; Closing fire valves, stop air conditioning blower; Shows the location of the fire, fault alarm; The evacuation passageway and export etc. According to protect map (simulation diagram, floor plan); Display of fire power supply state; Equipped with fire alarm emergency broadcast control device; 19, the state of the fire control process: when the fire alarm. Fire alarm system alarm. Automatic fire extinguishing system startup; Indoor fire hydrant system start (fire pump start); Switching power supply (not fire power blackouts, emergency fire power), and turn on the alarm devices and emergency lighting and evacuation indicating light. The elevator landing on the first floor; Open), pressure blower start (tuyere isolation system start (fire shutter down); Fire doors closed; 20, every fire partition at least set a manual fire alarm device, from anywhere within a fireproof partition to the adjacent manual alarm button walking distance should not be more than 30 meters, the installation position of 1.3-1.5 meters.

Smoke and exhaust system

21, a second building (more than 50 meters high), building more than 32 meters high buildings should be the smoke partitions; 22, smoke partitions is generally not more than 500 square meters, is not greater than the fire zone; Don't cross fire partition, smoke control system set up generally in the hallway, prevent the flue, exhaust shaft, independently rated 1 hour. 23, smoke and exhaust system of high-rise building. Divided into mechanical pressurization smoke prevention system and automatic exhaust system (but outside the open window); Outside the window can be opened, automatic exhaust system () can be divided into: mechanical smoke exhaust system outside the window can be opened, and natural smoke exhaust system; 24, tower buildings should be equipped with two smoke evacuation stair; With former room, the first room is equipped with mechanical pressurized air supply system. Stair every 2 to 3 layer set a pressurized air supply outlet, the former room set every layer of pressurized air supply outlet; 25, the smoke prevention stair well. Share before the fire chamber design air volume 18000-20000. 28000-30000 m3, H. Layer more than 32 layer of piecewise calculation.

Mechanical pressurized air supply system

26, mechanical pressurized air supply system installed in the front room, stair, share room, fire elevator before the room; When the stairwells and before the fire chamber pressurization system must share should be set when the differential automatic adjusting device; Mechanical pressurized air supply system of total pressure in addition to the calculation of the weak points of the head loss, the remaining pressure shall meet the following requirements:

27, the smoke prevention stair well of 50 pa;

28, room, stair, share before the room, before the fire elevator room, fire cut of 25 pa; 29, stair every 2 to 3 layer set a pressurized air supply outlet, the former room every layer of a pressurized air supply outlet.

30, mechanical pressurized air supply system and mechanical smoke extraction system of 1) use a metal duct wind speed regulation, the wind speed is not more than 20 m/s

2) concrete pipe wind speed is not more than 15 m/s

3) air supply outlet wind speed is not more than 7 m/s; Exhaust port of the wind speed is not more than 10 m/s; 31 and exhaust system Settings: general Settings in the stairwell, front room, before the fire room, share room before. Refuge floor.

32, for more than 32 layer building stairwells of supply air and exhaust air shall be computed piecewise 33, shear floor stairwell with a duct available its parameters calculated on two stairwells, tuyere set respectively.

34, refuge floor pressurized air output calculated on the net area is not less than 30 cubic meters per second, the refuge floor should have fire elevator exports, fire emergency lighting, radio, telephone, fire hydrants, and is equipped with independent smoke prevention facilities, smoke to undertake breaking up the stairs.

The mechanical exhaust system (smoke)

35 and smoke exhaust system setting conditions:

1) building more than 32 meters high,

2) the passage more than 20 meters. And with natural ventilation, natural lighting, 3) area of more than 100 square meters

4) ventilation and air conditioning system should be set exhaust system

The installation position of 36, smoke prevention system:

1) take a smoke partitions headroom is more than 6 meters room, no less than 60 cubic meters per square metre 2) take a smoke partitions headroom is more than 6 meters room, every square metre is not less than 120 cubic meters, 3) exhaust port installed in the roof and ceiling position; Exhaust quantity not less than 60 cubic meters per second; 4) smoke mouth set horizontal distance is not more than 30 meters smoke damper closed temperature 280 ℃) corridor the smoke control system of vertical Settings, according to the indoor fire partition set 6) mechanical smoke exhaust system can share but must use reliable and ventilation air conditioning system of fire prevention measures 7) fire in the duct for construction safety rescue system: mainly used in fire smoke exhaust and life guarantee of positive pressure air supply system, generally can be divided into 1 h, 2 h, 4 h, etc for different levels.

37, ventilation and air conditioning

1) ventilation system should be set, lateral press fire partition Settings, vertical every five layer Settings (no more than 5 layers); 2) ventilation air conditioning system through the following situations when fire damper installation 700 c (through fire partition wall, floor deformation cracks, etc.).

other

38, glass curtain fire resistance rating should be 1 hour refractory;

39, building distortion seam, should add fire protection layer;

40, frameless glass curtain wall and glass curtain wall should be refractory 1 hours, should be 800 mm high solid wall; 41, generator room, dosage of oil storage should not exceed 8 hours;

42, spacing 13 meters of high-rise buildings, building 6 meters;

43, fire lane width is not less than 4 m, and building distance not less than 5 meters, height is not more than 4 meters; 44, deformation cracks of the building and metal structure with fire protection layer; 45, a secondary building fire partition maximum distance of 150 meters, covers an area of 2500 square meters. 1 well, cable pit, pipes, exhaust, smoke well should be separated on each floor.

Fire zone

46, a class of buildings: 1000 square meters; Second floor: 1500 square meters; The basement: 500 square meters; 47, high-rise building and skirt building has a firewall, and good fire prevention measures the largest fire zone shall not be more than 2500 square meters; 48, high-rise buildings have escalators, the lower level connected, open channel up and down the stairs, fire partition should make points up and down connected to the fire partition, 49, each layer of fire partition area of superposition calculation security access door should not be less than two, two exit distance of not less than 5 meters. Generally in the 24 to 40 m, ring corridor 10-20 meters; Safety evacuation door distance no more than 40 meters, any one of the indoor indoor door to the not more than 15 meters.

50, the first layer fire escape corridor, 1100-1100 - mm wide; 900-1300 mm, the door to open. 1 outside the door. Within 4 meters shall not have step 104, fire shutter refractory grade is commonly 3 hours; 51, 18 layer and layer under 18 building, area of no more than 650 square meters, do not more than eight units, should be equipped with smoke stair and fire elevator; 52, fire elevator configuration: less than 1500 square meters of setting a fire elevator, greater than 1500 is less than 2 sets of 4500 square meters, 4500 square meters 3 units; 53, fire elevator should be set in different fire zone; Before the fire elevator room not less than 6 square meters; 54, more than ten layers of construction should be connected or sag in the balcony in the unit.

Fire water supply and fire extinguishing equipment

55, before the fire elevator room is equipped with fire hydrant;

56, fire pump room fire resistance rating for level 2. Fire water tank floor 15 mm thick, partition wall refractory for 2 hours, class a fire door; 57, more than 100 meters high building shall be equipped with automatic sprinkler equipment. Fire acceptance specification.

The installation

58 when installing line tube, when the length exceeds 45 meters should be equipped with junction box; 59, pipeline crossing fire fighting water pool and shear wall should be added when casing, pipeline vibration with flexible joints, and tank interface to use welding, fire water tank to the reserved channel around 1 meter shall not be less than 0.7 meters, and ceiling height not less than 0.6 meters. Pressure range is 2.5 times.

60, the composition of the fire pump joint: interface, ontology, connector, check valve, safety valve, air valve, control valve installation sequence, installation height is 1.1 meters; Of 61, less than or equal to the DN100 pipeline welding; Card is greater than the DN100 pipeline in a connection.

62, pipe installation and floor beams, and on the distance, increasing according to pipe diameter of 40-200 - mm, the installation of piping and supports from 63, according to the increasing of the pipe diameter is 3.5 to 12 mm.

64, pipe support, installation of the hanger and nozzle distance should not be less than 300 mm, and the end of the nozzle distance shall not be less than 750 mm.

65, pipe through the deformation cracks, using the flexible joint and short tube. Short tube shall not be less than the wall or the wall body 50 mm length.

66, pipe vertical mounting bracket from 1.5 to 1.8 meters.

67, fire pump export should install the check valve, pressure gauge.

68, fire pressure device installed from the ceiling height not less than 1.0 meters

Installation order, 69, fire joint interface, ontology, connecting tube, check valve, relief valve, air valve, check valve

70, alarm valve installation distance apart from the ground 1.2 meters, alarm and alarm valve of the hydraulic connection should adopt new plating steel tube length less than 6 meters.

Beijing branch into the dragon control system co., LTD is specialized in high-tech product development, production and sales and service of high-tech enterprises, is China's security product industry association, deputy director of the unit, vice President of China association of fire units, China fire protection association director unit, passed the ISO9001 quality management system certification unit, a number of national and local relevant technical specifications and product standard of the ginseng units.

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