FIRE-FIGHTING DOCUMENTS

The current regulations require that a fire safety plan and fire scenarios for the premises subject to fire hazard are prepared. They are basis for further works consisting in designing and implementing the fire alarm systems or complete fire-fighting systems. If no such documents have been prepared for the respective structures, we may start from preparing them..

• Fire safety plan – the document is required for buildings and their parts representing separate fire zones, intended for performing public utility functions, boarding house, production building, warehouse, livestock building, where hazard explosion zone is present, or:
  • the gross cubic volume of the building or its part representing a separate fire zone exceeds 1,000 m3 (does not apply to livestock buildings),
  • the gross cubic volume of a livestock building exceeds 1,500 m³,
  • the fire zone area of a structure other than a building exceeds 1,000 m².

• Fire scenarios – a fire scenario is a description of the sequence of the possible events during a fire, representative for the respective place of its occurrence or area of impact, specifically for a fire zone or a smoke zone, considering mainly the way of operation of fire-fighting equipment, utility or engineering equipment, as well as their joint operation and interaction, and also organisational solutions needed for the proper operation of the designed safety measures..

• ATEX documents – apart from the aforesaid documents, mainly in reference to industrial structure, our documentation department also prepares such documents as:
  Explosion Hazard Zones Setting

• Explosion Hazard Assessment
• Explosion Risk Assessment
• Explosion Protection Document

FIRE DETECTION SYSTEM DESIGN

We design fire detection systems in consideration of the working conditions, specific requirements of the given building and fire scenarios provisions. Completely different requirements apply to a system protecting belt conveyors in a coal conveyor gallery, and different to a historic building or a church. A coal conveyor gallery is characterised with high-dustiness, humidity and variable temperatures, whereas in a sacral building it is important to install the system without any major interference in the building integrity. Each of the structures is, therefore, characterised with different requirements and working conditions which need to be planned at the designed stage.
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Therefore, design work is preceded with an audit and interview, which indicated serious problems and assumptions for further work consisting in implementing an effective fire detection system.

Selected components applied in the designed fire detection systems:

• Fire alarm panel
• Emergency power supply equipment
• Manual call points
• Optical smoke detectors
• Line heat detectors
• IR flame detectors
• Supervising module
• Signal controllers
• Status indicators
• Strobe light sirens
• Integrating and non-visualisation software

FIRE DETECTION SYSTEM INTEGRATION WITH OTHER SYSTEMS

When implementing a fire detection system, we integrate it with various safety and building automation systems. We also create visualisation, which we combine with the building or industrial system layout plans. This enables implementation of the assumed fire scenarios and managing the whole safety system in an efficient and intuitive manner.

The systems we integrate:

• wired and wireless systems of other manufacturers
• access control system
• voice alarm system
• smoke ventilation system
• fire lockout system
• fire dampers system
• lift system
• ventilation system

DELIVERY, INSTALLATION AND COMMISSIONING OF A FIRE DETECTION SYSTEM

With our installation group we are capable to perform a task in a comprehensive manner, i.e. starting from preparing fire scenarios, through concept and design, and ending with delivery and installation. In this way our customer may rely on a partner responsible for all of the implementation stages. Such solution may significantly facilitate the investment process, providing a guarantee that the final effect complies not only with the legal requirements but also the customer’s individual expectations.

MAJOR BENEFITS

Most benefits deriving from the installation of a wireless fire detection and alarm system will be visible in buildings of high-aesthetics or historic buildings, as well as ones which require fast and clean installation without any wires (churches, cathedrals, museums, buildings subject to Heritage Conservation Officer’s supervision, or existing buildings which must be provided with additional systems, often during their normal operation).

The strongest arguments for selecting that solution include:

• permits required by law, issued by CNBOP [the Scientific and Research Centre for Fire Protection],
• fast, clean and simple installation without laying cables, hammering out, raising dust, and creating a mess,
• ensuring high system aesthetics (the system elements imitate marble, wood or may be painted to a RAL colour),
• possibility to easily install the system at any stage of the building life cycle,
• unlimited possibility to integrate the system with the existing ones,
• possibility to provide hybrid operation, i.e. partially wired and partially wireless,
• low operating costs.

PRINCIPLE OF OPERATION

The wireless part of a fire detection and alarm system is based on an established in Europe, patented Lybra digital protocol using the 868-870 MHz frequency. Such system elements as detectors, alarm sounders, audible and visual alarm systems, manual call points, signal intensifiers and signal translator communicate on wireless basis. A coded signal is sent through 7 independent channels, which connected with a multi-directional antenna practically eliminates interference and fadeout. The system communication fulfils the technical requirements of a standard for fire alarm sub-assemblies using radio frequency links (EN 54:25).

Any devices in their basic version have a transmission reach of 200 m*. With the use of expander modules (SGWE) the distance may be increased to 500 m*. The solution is useful in large spaces or complex topography of buildings.

 * rated reach. Owing to the variety of installation places and different structures of buildings, the actual reach may be different from the stated one (either higher or lower). It is recommended to measure the signal strength and prepare a technical report before the system is installed.

All of the devices of a fire detection and alarm system are integrated through a wire to wireless system translator (VW2W), which in accordance with the regulation is connected to a wired loop of the fire detection system. Each VW2W translator enables connection of up to 32 wireless devices of any kind. In each loop of the intelligent fire detection system there may be up to 7 wireless section (micro cells) created based on a single translator. A VW2W translator enables the transmission of alarm/error messages and identification data from the wireless elements of the fire-fighting system main control panel. Additionally, for safety reasons, it records in its own memory any events which may serve as a source of information verification (or back-up for the events register) in case of doubt or main panel damage.

LOW BATTER COST – LONG OPERATION

The system devices are powered with generally available standard lithium batteries CR123 of 3 V voltage, which may be purchase at any shop. The main batteries keep the system going for 6 to 8 years, whereas with back-up batteries maintain the alarm status for 6 months of the moment the main battery is discharged. Batteries are monitored on continuous basis and their discharging is reported with a respective message in the system main panel. The maximum battery operation time of 8 years is a record among the wireless solutions offered on the market.