Automatic fire extinguishing installation of 2-storey garage

Contents

1. General part

2. Automatic fire alarm installation

3. Evacuation Warning and Management System

4. Selection of automatic fire extinguishing unit

5. Power supply

6. Grounding

7. Health and Safety

8. Professional and qualification staff

9. Maintenance

Common part.

1.1. This project is developed on the basis of contract No. ___________,

construction drawings provided by the customer, pre-design site survey data and current regulatory documents.

1.2. The protected rooms are located in a three-story building. On two underground floors (elev. -5.600 and elev. -2.800) there is a parking lot on the first floor (elev. 000) there is a security room.

Total area of protected parking premises 2268m2; security premises 85m2.

1.3. The building has II degree of fire resistance, functional class

fire hazard of F 5.2 rooms.

1.4. To ensure fire safety of the building, fire-fighting measures are provided, in accordance with the current norms and rules: NPB 882001 * "Fire extinguishing and alarm units. Design standards and rules, "NPB 11003" List of buildings, structures, premises and equipment recommended for protection by automatic fire extinguishing and detection units, "NPB 10403" Warning and evacuation control systems for fires in buildings and structures. "

1.5. Automatic installation of powder fire extinguishing is provided in the parking areas (SNiP 210299 item 6.29). Announcers firefighters thermal by SP 1023A21M isp.2 are applied to fire detection, in the protected rooms of the building.

In the security room (elev. 000) automatic fire alarm is provided (NPB 11003). Smoke fire detectors IPD3.1M are used to detect fire in protected rooms of the building.

The type of fire detectors is selected depending on the purpose of the premises, the type of fire load and the fire factor at the initial stage of fire occurrence.

1.6.To extinguish the fire, WFP "Veer2" powder fire extinguishing modules are used.

1.7. As a fire extinguishing station, the Master receiving and control device was used.

1.8. Parking rooms are divided into fire fighting areas:

- three local fire-fighting areas at elev. -2.800;

- three local fire-fighting areas at elev. -5.600.

1.9. Fire extinguishing is carried out from the control units "Grand Master PU BU," which are connected to the fire extinguishing station "Magistrator" via a four-wire communication line.

1.10. In accordance with the current norms and regulations, these fire safety systems ensure timely detection of a fire, notification of people about a fire and elimination of a fire (parking room).

2. automatic fire alarm installation.

2.1. Main design solutions.

2.1.1. Automatic installation of fire alarm in the building is intended for fire detection and notification of fire of duty personnel, activation of fire warning system.

2.1.2. Fire alarm loops are connected to control units "Grand Master of CP BP," installed near fire extinguishing zones.

2.1.3. Two fire alarm loops (elev. -5.600 and elev. -2.800), which include three manual fire detectors each, are connected to the "Grand Magister4" acceptance and control device installed in the security room.

2.1.4. Fire alarm loop at el. 000 is connected to PKP "Grand Magister4."

2.2. General information on the principle of work.

2.2.1. The main principle of the manual fire detector is to close the contacts of the internal microswitch, which connects an additional resistor to the fire alarm loop, which causes a change in the resistance of the PSK loop.

2.2.2. The main principle of operation of the smoke detector is the detection of smoke particles in the sensor working chamber due to reflection of light radiation emanating from the LED from smoke particles, which, when processed by the detector circuit, leads to a decrease in the sensor internal resistance to 500 ohms.

2.2.3. The main principle of the operation of the thermal fire detector is the opening of the contacts of the thermally sensitive element when the sensor is heated above 62 ° С.

2.3. Equipment placement.

2.3.1. Smoke fire detectors are installed on the ceiling in accordance with the plans for the placement of equipment, APS and EPSS networks at el. 000 (sheet 14). The distance between smoke detectors shall not exceed the value specified in Table 5 of NPB 8801 *: between detectors not more than 9 m; between the detector and the wall not more than 4.5m. Sensors are connected to each other by KSVV cable.

2.3.2. Thermal fire detectors are placed on the ceiling in accordance with the layout plans of the APS equipment and networks (sheet 2, sheet 4). The distance between thermal fire detectors shall not exceed 1.87 m, and between the detector and the wall shall not exceed 0.93 m (in case of generation of signals for fire extinguishing control, warning of the 3rd type, etc., the distance between detectors shall be not more than half of the normative distance determined as per Table 8 (NPB 8801 p.13.1); if there are protruding parts on the ceiling from 0.08 to 0.4 m, the area controlled by fire detectors specified in Table 8 decreases by 25%).

Sensors are connected to each other by KSVV cable.

2.3.3. If there are boxes, process platforms with a width of 0.75 m and more in the controlled room, which have a continuous structure, which is located along the lower elevation from the ceiling at a distance of more than 0.4 m, fire detectors must be additionally installed under them (NPB 8801 p.12.20).

For air ducts, thermal fire detectors are placed according to plans for placement of equipment and APS networks on air ducts (sheet 3, sheet 5). The distance between thermal fire detectors shall not exceed 2.50m and between the detector and the wall 1.25m

2.3.4. Manual fire detectors are installed on the wall at a height of 1.5 m from the floor level, according to plans for the placement of equipment and APS networks. The trunks are made by the WCS cable.

2.3.5. Devices "Grandee of Magistr8", "Magistrator", the SKAT1200U uninterruptible power supply unit and source of reserve food of "CKAT1200P5" are placed in protection on a wall with the fireproof basis at the height of 1.5 m from floor level.

Power supply.

According to PUE, fire alarms in terms of power supply are classified as electrical receivers of the 1st category. Therefore, the power supply of the plant must be provided from two independent AC sources with a voltage of 220 V. The frequency is 50 Hz and not less than 1.0 kW each, or from one AC source with automatic switching in emergency mode to backup power from batteries.

Backup power supply shall ensure normal operation of the plant within 24 hours in standby mode and not less than 3 hours in fire mode.

In the security room on (elev. 000) the SKAT1200U uninterruptible power supply unit with battery 12a*ch and the CKAT1200P5 stand-by power supply with battery 7a*ch, PPKOP Magistrator with battery 7a*ch and PPK "Grandee of Magistr4" with battery 7a*ch is installed.

Technical characteristics of electrical receivers of the plant:

1) operating input voltage - 220V, 50 Hz.

2) power consumption by operating input - not more than 180 VA.

3) voltage deviations from 10% to + 10%.

Grounding.

To ensure the safety of people, all electrical equipment must be reliably grounded in accordance with PUE requirements. Grounding devices shall be installed in accordance with manufacturer's technical documentation. The resistance of the grounding device must be not more than 4 ohms. Connection of grounding and zero protective conductors shall be made by bolting. The third core of the power cable is used as the ground conductor.

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