Fire Alarm and Warning System Design

Contents

CONTENTS

General part

List and characteristics of protected objects

Main decisions taken in the project

Fire alarm

Alerting system

Electrodistributing

Power supply of the unit

Equipment placement and connection

Organization of installation works

General part

This design of the automatic fire alarm system has been developed in

compliance with regulatory and technical documents:

- GOST 2799088 Means of security, fire and fire alarm.

General technical requirements;

- Construction Norms and Regulations 110195 Instruction about an order of development, coordination, a statement and structure of the project documentation on construction of the enterprises, buildings and constructions.

- SNiP 210197 Fire safety of buildings and structures;

- RD 78.14593 Security and fire alarm systems and complexes.

Rules for production and acceptance of works;

- RD 78.14693 Instruction on technical supervision of project and

installation works on equipment of facilities by means of security alarm;

- NPB 882001 Fire fighting and alarm systems. Rules and Regulations

design;

- NPB 11003 List of buildings, structures, premises and equipment to be

protection by automatic fire extinguishing and automatic fire fighting units

signalling;

- PPB 0103 Fire Safety Regulations in the Russian Federation.

- NPB 10403 Design of fire warning systems for people in buildings and

structures.

- RD 25.95390 Automatic fire extinguishing system, fire and fire protection system

signalling. Symbols and schematic graphical links.

- RD 78.36.00299 Technical means of facilities safety systems. Designations

conditional graphical elements of systems.

- PUE Electrical Installation Rules.

The working design of the automatic fire alarm system is developed in

in accordance with the requirements of environmental, sanitary hygiene, fire fighting

and other rules in force on the territory of the Russian Federation and providing

safe for life and health operation of the integrated system at

compliance with the measures stipulated by working documents.

List and characteristics of protected objects

All rooms shall be protected by automatic fire alarm system

buildings regardless of their functional purpose, except for premises,

related to wet processes (showers, bathrooms, cooling chambers, rooms

washes, etc.); ventilation chambers (plenum, as well as exhaust, not servicing

production facilities of category A or B), pump water supply, boiler and

other rooms for engineering equipment of the building, in which there are no combustible

materials; categories B4 and D by fire hazard; staircases.

The walls of the building are brick, the floors are reinforced concrete.

The main type of fire load in protected rooms is insulation

electrical cables, office equipment, non-combustible materials in burnt packages, furniture.

Main decisions taken in the project

Fire alarm system provides:

round-the-clock monitoring of the situation in the guarded rooms, issuing "Fire" signals when the fire alarm is triggered to the remote devices of light and sound alarm, starting the voice warning system.

To build a fire alarm and warning system for people in case of fire

instrument "Signal-20 isp. 02».

The IR system includes:

- "Signal20" instrument;

- "Scat1200" redundant power supply source;

- smoke fire detectors "IP 21285";

- manual fire detectors "IPRI";

- "Exit" light signalling annunciators;

- sound annunciators "Oriole."

PPKOP provides:

- testing of fire detectors serviceability in the loop;

- alarm when fire detectors are activated;

- uninterrupted operation of the station in case of loss of main power supply from

redundant power supply in standby mode for 24 hours and in standby mode

alarms 3 hours;

- start of warning system at fire detectors actuation;

- display of information on the front panel of PPKOP "Signal20," audio supply

signal at signal "FIRE," "SHORT CIRCUIT" and "BREAK";

- alarm output at fire detector actuation by opening

relay contacts.

Information on the status of fire alarm detectors is displayed on indicators

"Signal20" devices and external devices of light and sound signalling

External remote light and sound alarm devices are installed inside

buildings.

Based on the characteristics of the rooms equipped with automatic fire protection

alarm, type of fire load, ceiling ceilings, development features

combustion center, as well as for the purpose of early detection of fire, the project provides for

protection of premises by optical smoke fire detectors of "IP" type 212-85

To signal fire in case of its visual detection by duty personnel

maintenance personnel provide for the placement of manual firefighters

detectors of type "IPRI" on the way of evacuation of people on walls and structures.

All equipment used has a fire safety certificate.

Fire alarm

At least two firefighters shall be installed in each protected room

detectors "IP 21285." Location of point smoke detectors should be

take into account air flows in the protected room caused by

plenum or exhaust ventilation, the distance from the detector to

ventilation hole must be at least 1 m. Fire detectors "IP 212-85"

shall be installed not further than 4.5m from walls and not more than 9m between detectors in accordance with NPB 882001. Point smoke fire detectors should be

install in each compartment of the ceiling with a width of 0.75 m or more, limited by

construction structures (beams, runs, plate ribs, etc.) protruding

from the ceiling by a distance of more than 0.4 m. If building structures protrude from

ceiling by a distance of more than 0.4 m, and the compartments formed by them in width are less than 0.75 m,

the area controlled by fire detectors is reduced by 40%.

If there are protruding parts on the ceiling from 0.08 to 0.4 m, controlled by firefighters

detectors reduce the area by 25%.

If there are boxes, process platforms with width in the controlled room

0.75 m or more having a solid structure spaced from

ceiling at a distance of more than 0.4 m and not less than 1.3 m from the floor plane, under them

fire detectors shall be additionally installed.

Point smoke fire detectors shall be installed in each

a room compartment formed by stacks of materials, racks, equipment and

construction structures, the upper edges of which are 0.6 m or less from the ceiling.

When installing point smoke detectors in rooms with width less than 3

m and in other spaces less than 1.7 m high distance between detectors

it is allowed to increase by 1.5 times.

If fire detectors cannot be installed on the ceiling,

fire detectors shall be installed on the wall at a distance not exceeding 300 mm from the ceiling,

including the dimensions of the detector. Installation of fire detectors should be performed in

in accordance with the requirements of the technical documentation for this detector.

In places where there is a risk of mechanical damage to the detector, it must be

a protective structure is provided that does not disturb its operability and

efficiency of fire detection.

In case of installation of different types of fire detectors in one control area, their

placement is carried out in accordance with the requirements of the standards for each type of detector.

Manual fire detectors shall be installed on walls and structures at height

1.5 m from ground level or floor. Manual fire detectors shall be installed

at a distance of:

not more than 50 m apart from each other inside buildings;

not more than 150 m from each other outside the buildings;

not less than 0.75m before the detector there shall be no different controls and objects,

preventing access to the detector. Illumination at manual installation site

fire detector must be at least 50 lux.

Alerting system

Based on item 15, Table 2 of NPB 10403, a warning and control system is provided

evacuation of people in case of fire of type 2. In accordance with Table 1 of NPB 10403 by design

provision is made for the installation of sounders (siren), light annunciators

"Exit." Lighting and management of evacuation of people in case of fire

is performed by the supply of sound and light signals in the premises of the building with permanent

or temporary stay of people, alerts:

- combined alert "Mayak12KP";

- sound annunciator "Oriole";

- "Output" annunciator;

The placement of sound alerts provides a total sound level of at least 75 dBA per

3 m from the alert, but not more than 120 dBA at any point protected

rooms. To ensure clear audibility, EMSS audio signals provide

sound level is not less than 15 dBA higher than permissible sound level of constant noise in

protected room.

Electrodistributing

Connection of fire alarm loops with smoke and manual

fire detectors are provided to PPKOP "Signal20. Laying of loops

automatic fire alarm in building rooms is performed by cable

KSPV 2h0.5 is allowed to use a similar cable with a section not less than 0.5 mm with

copper cores. Automatic fire alarm loops in protected

rooms shall be laid separately from all power cables, lighting cables and wires.

With parallel open gasket, the distance between wires and loopback cables

automatic fire alarm and trunks with power and

lighting wires must be at least 0.5 m. If necessary, lay these

wires and cables at a distance of less than 0.5 m from power and lighting wires they

must have tip protection. It is allowed to reduce the distance to 0.25 m from wires and

automatic fire alarm cables and trunks without protection from

aiming single lighting wires and control cables. Distance from cables

insulated wires laid open, directly on the elements

building structures of the premises, to places of open storage (accommodation) of combustible

materials must be at least 0.6 m. At the intersection of wires and cables with

pipelines the distance between them in the light must be not less than 50 mm. At

parallel laying distance from wires to pipelines must be not less than

100 mm.

Power supply of the unit

Fire alarm system by power supply reliability level

must have category I power supply according to PUE. System power supply

fire alarm from existing switchboard

voltage 220V 50Hz. For power supply of instruments and fire detectors

12V " Scat1200" redundant power supply with 7A/h battery is used.

Backup power supply provides uninterrupted operation of fire fighting devices

signalling at loss of main power supply in standby mode for not less than 24h

for PS subsystem The design provides for automatic switching of power supply

from primary source to standby source. Grounding of equipment and devices shall be

shall be performed in accordance with the requirements of the technical documentation of the manufacturers.

Equipment placement and connection

Arrangement of instruments and equipment shall be specified during erection

works. Structural diagram of fire alarm system, location plans

equipment and detectors, connection diagrams, equipment installation sketches

are given in the project. Wires and cables shall be laid according to

PUE, NPB 8801, RD 78.14593.

Signaling loops circuits shall be made by 2x0.5 KSPV wire; KSPV 4x0.5 ;

Circuits of warning lines shall be made by 2x0.5 KSPV wire;

Lay the power supply circuits with 3x1.5mm BWP wire

Organization of installation works

Installation of cable network and fire alarm equipment is recommended

perform in accordance with RD 78.14593, manual to RD, part 2.

Installation is recommended in the following sequence:

- preparatory works;

- laying and drawing of cables and wires;

- installation of devices and detectors.

Preparatory work includes:

- preparation of materials and workplaces;

-Verifying the integrity and operability of instruments and detectors.

Condition of cables and wires before laying shall be checked by external

inspection. In addition to the inspection, the cable must be trimmed and checked

integrity of insulation of cores. Frequency of instrument and detector maintenance shall be

shall be carried out in accordance with the technical description for each instrument.

Commissioning requirements.

Commissioning works shall be performed by the installation and installation organization in

in accordance with the requirements of RD 78.14593 and with mandatory Appendix 1 to SNiP 3.05.05-

84, SNiP 3.05.0685 and SNiP 3.05.0785.

Prior to commencement of commissioning during erection works shall be

individual tests (adjustment, adjustment of corresponding parts

installations, detectors, control and receiving devices, etc.) in accordance with

technical descriptions, instructions, PUE.

Commissioning shall be performed in the following sequence:

- performance of preparatory works;

- commissioning works;

- individual tests;

- complex equipment adjustment.

Commissioning is considered to be completed after receipt of the envisaged

design and technical documentation of parameters and modes providing

stable and stable operation of signalling equipment.

Occupational Safety and Fire Safety Requirements

Installation works should be started only after execution

safety measures according to SNiP 12032001 and fire regulations

safety PPB 0103.

When performing works, it is necessary to:

Be guided by safety sections of technical documentation

manufacturers, departmental instructions on equipment

safety during installation and adjustment of monitoring devices and automation equipment.

Allow persons to work who have undergone safety training. Passing

briefing is noted in the journal. Electromonters shall be provided with protective

Means which have passed the relevant laboratory tests.

Work with system hardware must be performed with

compliance with PUE. When working at altitude, use only ladders. Lower ends

must have stops in the form of rubber tips.

When working with manual power tools, observe the requirements of GOST 12.2.01387.

Чертежи.dwg