Siantel designs and installs fire detection systems in accordance with UNI 9795 standards and ensures their maintenance as per UNI 11224.
Using the criteria of UNI 9795:2021, Siantel designs, installs, and puts into operation fixed fire detection and fire alarm systems. Fixed systems autonomously detect the onset of combustion and signal it in the shortest time possible. In contrast, alarm systems must be activated by humans and emit an acoustic signal to alert people present on-site. In both cases, the fire alarm signal is transmitted and displayed at a control center and potentially retransmitted to an alarm reception center or an alarm reception and intervention center. The purpose of these systems is to facilitate the timely evacuation of people and animals, as well as the possible removal of goods, activate intervention plans, and trigger fire protection systems and any other safety measures.
Siantel’s FIRE DETECTION and FIRE ALARM Systems
Conventional and analog control panels
The brain of the fire detection system, which collects signals from sensors, barriers, buttons, and other activations to trigger alarm signals useful for evacuation and notifying remote monitoring of the ongoing alarm.
Conventional
Ideal for small installations.
Economical, old-fashioned devices.
Use terminated lines that control a series of devices without determining exactly which one generates the alarm.
Analog
New concept control panels that allow for greater device capacity, better control over each device, enabling more complex installations.
The connection is on loops (which must be closed according to EN54 standards to increase operational certainty), and they can manage logical programming to achieve complex and customizable results in detection, output management, and alarms.
Automatic detectors
Different types of devices detect the presence of a fire. Chosen during the design phase based on the event they can detect and the environment where installation is planned.
Linear smoke detectors
Used to protect large areas. The alarm is triggered when smoke attenuates the infrared beam between transmitter and receiver. They must be installed linearly without interference obstacles between points.
Point smoke detectors
Called point detectors because once installed, they detect a specific fire point.
This family includes optical smoke detectors, which transmit the alarm through smoke particles’ reflections, ionization smoke detectors, which detect even invisible smoke by ionizing the air between two electrodes, reducing the electric current between them and triggering the alarm, sampling detectors used in specific environments, aspirating air and monitoring smoke absence, and flame detectors used where liquid or highly flammable solid combustion is possible.
Point temperature detectors
Constantly monitor the ambient heat level, triggering the alarm if a preset threshold is exceeded or there is a significant temperature increase, or both. These detectors are useful where temperature increase is more likely than smoke production from smoldering fires.
Optical indicators
Useful in noisy environments, they signal the alarm with a flashing light. The coverage is indicated by the manufacturer based on ceiling or wall mounting.
Sirens
Signal pre-alarm and alarm with intermittent sound for the former and continuous sound for the latter; frequencies are regulated by EN54 standards.
Emergency Voice Alarm Communication (EVAC):
In accordance with European standards EN 54-16 /24 /32.
Emergency Voice Alarm Communication.
Acoustic systems, using speakers, warn people of danger, transmitting clear pre-recorded messages to guide and inform everyone appropriately during evacuation.
Require a thorough acoustic study of environments to ensure message intelligibility.
To comply with EN54-16 and EN54-24 standards, they have control equipment and speakers different from simple sound diffusion, involving special cables, crossed lines, and other precautions to increase operational safety even in extreme cases.
Normally required in public crowded environments, offices with over a hundred people, commercial activities over 400sqm, schools, healthcare facilities, etc.
Automatic extinguishing systems
These systems extinguish and contain a fire without human intervention. They consist of pipe networks with storage of liquid or gaseous extinguishing agents.Activated after fire detection by multiple smoke sensors.
Siantel proposes:
Water systems:
with rain system (sprinklers), ideal for extinguishing solid material fires.
Deluge systems:
(spray systems) used to protect buildings or objects where fire spreads rapidly.
CO2 or radon gas systems:
suitable for places with limited human presence. These gases saturate the environment, removing oxygen from the air.
Particularly suitable for transformer cabins, server rooms, archives.
Foam systems:
applicable in hazardous environments like petrochemical, refineries, pharmaceuticals, tire or waste storage, airports, etc.
A mixture of water and foam that cools the fuel, separating it from oxygen.
EN 54-21 compliant telephone communicator
The UNI9795 standard requires installing a communicator that meets EN54-21 requirements when the control panel is not under constant on-site control by personnel. The communicator must have the following characteristics:
- Secure reception of communications.
- Transmission of signals through multiple communication systems.
- Supervision of the connection between fire detection panels and operational centers.
Conclusions on fire detection systems
Conclusions on fire detection systems: The implementation of fire detection and alarm systems is crucial for building and human safety. The UNI 9795:2021 standard guides the design and installation of these systems, ensuring a prompt response in case of emergency. Control panels, both conventional and analog, play a crucial role in monitoring and communicating alarms. These systems allow for the rapid evacuation of people, activation of intervention plans, and implementation of fire protection measures. In summary, fire safety is a priority for protecting human lives and material assets.
The role of the fire detection maintenance technician is also a topic to consider.
