Automatic fire alarm and warning systems

General part

The technical solutions adopted in the project comply with the requirements of environmental, sanitary, fire and other applicable norms and rules, and ensure safe operation of the facility for life and health of people, subject to the measures provided by the project.

The following regulatory and technical documents were used in the development of the project:

SNB 1.03.0296 "Composition, procedure for development and approval of design documentation in construction";

SNB 2.02.0201 "Evacuation of people from buildings and structures in case of fire"

PUE "Electrical Installation Rules," sixth edition;

SNB 2.02.0504 "Fire automation";

NPB 152004 "Field of application of fire alarm systems and fire extinguishing systems"

GOST 30331.395 (MEK.36444192) "Electrical installations of buildings. Part 4. Safety requirements. Protection against electric shock. "

The initial design data was the approved design assignment and drawings submitted by the customer.

Description and characteristics of the object

The object is a two-story building with a basement.

Ceiling height in protected rooms up to 3 m.

The facility is located at the address of Minsk.

Key Technical Solutions

Selection of automatic fire alarm system (AFS) hardware was made on the basis of analysis of structural and construction characteristics and purpose of premises, taking into account requirements of technical specification, regulatory and guidance documents, tactical and technical characteristics and equipment cost.

The fire alarm is organized on the basis of the Orion automatic system, the equipment of which is installed at the security post on the second floor.

The control of the fire alarm system (statement, removal, dumping of alarms, etc.) is carried out by the C2000 control panel. System status information is displayed on LCD display of "S2000" panel and on "S2000 BI" indication unit.

The automatic fire alarm system outputs control signals to activate the warning system by means of contacts of the Orion system instrument relays. The project provides for the output of "Fire" and "Malfunction" signals to the EMERCOM panel. There are also contacts for turning off ventilation.

Fire alarm is made using automatic fire smoke optoelectronic detectors IP 2125M and manual fire detectors IPR3SU.

According to SNB 2.02.0201, a fire warning system of the SO-2 type is provided at the facility. Light-and-sound placards ASTO12S/12 with inscriptions "Exit/Fire" and ASTO12S/1 with inscription "Fire" are used as warning devices. The warning system is controlled by the TangoIP device.

Equipment placement

During installation of fire alarm system elements, refer to references on drawings, certificates and technical descriptions for used equipment and materials.

At the security station on the 2nd floor (place with permanent presence of personnel) there is a Signal 20P SMD device and the system equipment is additionally mounted: Tango warning set (Tango CP) at an altitude of 0.8-1.5m. The distance between instruments shall be not less than 0.05m .

Manual fire detectors IPR3SU are installed on escape routes and staircases at an altitude of 1.5 m from the floor level. Place the installation of manual fire detectors with signs according to GOST 12.4.009 and GOST 12.4.026.

Fire alarm system detectors shall be installed in all rooms except for rooms of bathrooms and thermal plugs.

ATS placards with "Exit/Fire" placards are installed

lie over evacuation exits at an altitude of 2.5 m. ASTO placards with "Fire" inscription are installed according to drawings at the altitude of 2.5 m.

Electrical wiring

The fire alarm network is wired with KSPV 2x0.5 cable. Make wiring behind suspended ceiling in PVC pipe. On the stairwell, protect the wiring with a metal pipe.

The light-and-sound indicators of the fire warning system are connected by the CVVP cord, the wire is branched through KO-4 boxes.

The main power supply of the equipment is carried out by the IWG cable and is carried out from the existing power source.

Power supply of equipment

The fire alarm unit is a category 1 consumer and requires two independent power supplies.

Operating inputs 220V, 50Hz are supplied to power supplies of IRPA 124 BP.

Calculation of power supply for fire warning (ISP VZ IRPA124 BP)

Backup power supply for installation of fire warning is performed from 12V, 7a/h - 2pc batteries and provides operation of the unit within 1 hour (it is installed in power supplies of IRPA 124 BP).

7. SECURITY ARRANGEMENTS

PLANT MAINTENANCE

To protect maintenance personnel from dangerous voltages that may occur on electrical equipment housings as a result of insulation damage, the electrical equipment housings are provided for. The electrical equipment shall be occupied by metal connection of its housings to the neutral of the power supply network of the objects, for which a separate third, protective conductor, laid together with wires of other purposes, is used. During works, refer to GOST30331.395 (IEC 36444192) "Electrical installations of buildings. Part 4. Safety requirements. Protection against electric shock.