Designing of warning and evacuation management system for the office
Completed construction and installation work under the contract for the design and installation of the evacuation warning and warning systems at the facility finishing the office for a large real estate company.
DESIGNING SOUE
3. MAIN DECISIONS ON THE SYSTEM FOR EVOLUTION AND MANAGEMENT OF EVACUATION.
3.1. The warning system and management of operation (further SOUE) is designed in accordance with the requirements
Joint venture 3.13130.2009, the project "Measures to ensure fire safety" and special technical
conditions (STU) on the design of fire protection.
3.2. At the facility it is envisaged to apply the SOUE with the connection to the existing SOUE of the building in the switching boxes.
warning zone number 5 on the 1st floor in accordance with the specifications. Central equipment SOUE
(signal conditioners, amplifiers, uninterruptible power supplies, etc.) existing, fully
mounted and commissioned and is not considered in this project.
3.3. Equipped with loudspeakers SOUE subject to all premises with a permanent or temporary stay of people.
The number of sounders, their placement and power, provide the necessary audibility in all
places of possible stay of people.
3.4. SOUE on a signal from the automatic fire alarm system starts the warning system and
transmits a fire alert signal. Speech alert in emergency situations, as well as announcements may
to be made both in automatic, and in the manual mode. In automatic mode, the notification is carried out
using pre-recorded messages. In the manual mode the notification is carried out by the person on duty with
microphone rack alert or dispatch console.
3.5. For the formation of voice alert signals the installation of voice alarms in the premises is provided
building. To ensure the required level of sound used ceiling voice alarms Bosch LBC 3086/41
and wall speech Bosch LBC 3018/00.
3.6. The system end module (EOL) is used to monitor the alert lines to which
More than 20 loudspeakers are connected. The module is connected at the end of the line behind the last speaker.
3.4. The following scope of work is foreseen:
-Installation of loudspeakers mounted on a false ceiling (31 pieces);
-Installation of loudspeakers mounted on the wall (1 pc);
- laying of the cable plume alerts (~ 300 m).
4. POWER SUPPLY AND GROUNDING
4.1. In accordance with the PES installation of fire alarm and alarm in terms of ensuring reliability
power supply related to consumers of the 1st category.
4.2. Power supply and grounding for a 220V AC fire alarm system according to the 1st category
Electrical installation code and grounding (zeroing) are provided by the Customer.
5. SELECTION OF TYPE, POWER AND METHOD OF INSTALLING VOICE-GUARANTEES.
5.1. The sound level of constant noise in office rooms and corridors SPLш = 55dBA.
According to the requirements of SP 3.13130.2009, in order to ensure clear audibility, the acoustic signals of the AEES should
ensure the sound level is not less than 15 dBA above the permissible sound level of constant noise in the protected
at least 75 dBA at a distance of 3 m from the siren, but not more than 120 dBA at any point
protected premises.
SPLtr = 55dBA + 15dBA = 70dBA.
Thus, the required level of the sound signal in the premises must be at least SPLtr> 75dBA.
5.2. To ensure the required level of sound in office rooms with suspended type ceilings are used
Speech ceiling speakers Bosch LBC 3086/41 with a sound pressure level of 90 dBA (included with
power 1.5W, 100V).
The decrease in the signal level in dBA at a distance L in meters, relative to its value at a distance of 1 m from
siren is calculated: r = 10Lg (1 / L2)
According to this formula, the minimum allowable sound pressure from the siren SPLtr = 75dBA is achieved
at a distance of not more than 7 m from the speech annunciator.
5.3. To ensure the required level of sound in technical rooms with no false ceilings
Bosch LBC 3018/00 voice wall annunciators with a sound pressure level of 94 dBA are used
(included with a power of 1.5W, 100V).
The decrease in the signal level in dBA at a distance L in meters, relative to its value at a distance of 1 m from
siren is calculated: r = 10Lg (1 / L2)
According to this formula, the minimum allowable sound pressure from the siren SPLtr = 75dBA is achieved
at a distance of not more than 11 m from the voice annunciator.
6. INFORMATION ABOUT THE ORGANIZATION OF MANUFACTURE AND MANAGEMENT OF ASSEMBLY WORKS
6.1. Installation of electrical wiring and technical means of the warning system and evacuation control to produce
in accordance with RD78.145-93 (Guide to RD, part 2), as well as with the observance of measures for
safety and labor protection.
6.2. Connections and taps of wires and cables should be made in switching boxes in the way
soldering or using screws.
6.3. Zapotolochnaya and open wiring should be in PVC pipe with metal fastening
staples to overlap.
6.4. It is not allowed to jointly latch SOUE with lines with voltage of 110 V and more in one box,
pipe, harness, closed channel of building construction or on one tray. Joint laying
These lines are allowed in different compartments of boxes and trays with continuous longitudinal partitions with
fire resistance of 0.25 h from non-combustible material.
6.5. Cutting cables to make after control promera laying routes with regard to the location
projected equipment.
6.6. Clearances at pipe penetration points through building structures should be sealed with fireproof ones.
materials.
6.7. Installation work should be carried out taking into account the actual location of engineering communications.
6.8. Before installation, check the integrity and operability of the loudspeakers, and
prepare materials, components and tools.
6.9. The condition of cables and wires before installation is checked by an external examination. In addition to inspection
the cable is routed and the integrity of the core insulation is checked.
6.10. To eliminate interference from the electrical network, laying low-voltage lines is performed at a distance
not less than 0.5 m from power circuits and lamps.
6.11. The distance from the cables and insulated wires of the warning system, laid open,
directly on the elements of building structures of the premises to open storage (placement)
combustible materials not less than 0.6 m.
6.12. The frequency of service devices and speakers in accordance with the technical description and
instruction manual for each product.
6.13. Provide service access to the serviced equipment.