The fire detection systems must ensure the protection of goods and people inside the protected areas, promptly reporting the occurrence of a dangerous situation.
The various solutions of fire protection are:
The evaluation of the type of fire hazard present in the places to be protected is the starting point for the choice of the Fire Fighting System suitable and ideal for the protection of people, activity and assets. It is, in fact, possible to design various types of systems characterized by different devices, configuration and wiring adopted. Typically they are three:
In cooperation with the company SMI Automazione, it has been developed a fire prevention system to be used in two new tunnels. This system is unique because the pointing of the monitors is completely automated. The monitors are nothing more than fire-fighting lances driven by three electric motors controlled by a central PLC. The fire protection system receives a position signal, discretized every 10 meters inside the tunnel, which provides an indication of where the monitors are to be pointed. At this point the control software proceeds with the mathematical calculations necessary for the positioning of the monitor in order to allow the jet to reach the fire point. The Zanocco company has been responsible for the construction of 120 "slave" electrical panels for the management of individual monitors and 2 "master" electrical panels to house all the control systems of the plant. The SMI company was responsible for developing the automatic tracking software of the monitors. It is one of the first companies all worldwide to have developed an automatic fire detection and extinguishing system in a tunnel.
Below there is a video of the first extinction test of an open field fire:
The hermetically sealed system is constituted by a tube sensor, which is mounted in the area to be monitored and one of the end is closed by a hermetic cap.
At the other end the tube sensor is connected to the detector box, more specifically to a fully electronic pressure sensor and to a pneumatic control device.
The entire pneumatic system contains normal air.
The control mechanism consists of a geared motor and of a pump.
The pressure sensor continuously measures the absolute pressure inside the tube sensor.
The sensor signals are analyzed mathematically by the microprocessor and they can therefore be used to calculate and to realize the differential behavior. If the pressure increases at the speed defined by software (mbar / s), the ADW signals a differential alarm. Disturbances (temperature fluctuations due to weather) are filtered.
The absolute maximal behavior of the ADW is designed so that the pressure corresponding to a maximum temperature triggers the alarm, the slow growth and constant pressure on the arc of a long period, which is not enough to trigger the differential function, is then seen as an alarm limit.
The ADW will be installed in a Secure area, while the sensor tube (galvanically insulated) can be placed in ATEX21 ZONE.
A fire fighting main unit will be installed (SFP) for the ADW alarm management and correct reporting of an alarm, malfunction or failure.
The ASD System consists of one or two independent pipes with the related suction holes and one or two highly sensitive smoke detectors.
By means of a special device the two air flows are monitored continuously to detect any breakage of the pipes or clogging of the holes.
A powerful fan draws air from the room or from the equipment to be monitored and conveys it through the hose to the terminal processor.
Here the air is analyzed continuously by the smoke sensors.
The control and signaling processor indicates the concentration of smoke in the air intake and the other messages of alarm, fault and status.
An increase in the concentration of smoke is quickly detected .
You can program three pre signals and a main alarm, transmitted via potential-free relay or directly on the loop line.
Four free slots allow to install additional relay modules, interfaces or memory cards.
Thanks to its excellent response characteristics, the ASD system is ideal to monitor equipments and premises.
WITH ONE ASD535 DETECTOR (two SSD535 sensors) IS POSSIBLE TO MONITOR TWO 1200 SQUARE METERS AREAS, THAT IS, A TOTAL AREA OF 2400mq !!!
It‘s the fire detection system for your safety and It has a highly developed intelligence and reliability that outshines all the systems known so far. It offers an extraordinary innovation: its architecture ensures a redundant design which excludes almost any system failures.
All hardware and software components are available in the redundant version and they work like two systems in parallel, separate and independent. If the active system fails, the secondary system takes over the operational process without interruption. This ensures maximum safety and immediate evidence of any event of fire, even if the system was damaged by the interruption of several wires.
It allows the maximum designing freedom thanks to its modularity.
You have the opportunity to combine in an integral homogeneous system up to 16 autonomous main control units without the use of a master computer.
To each of these interconnected stations, you can connect up to 14 loop lines with 128 elements each, for example: fire detectors and manual call points.
While the main unit is fulfilling its main task, which is the immediate recognition of the fires, the system communicates outward. It is connected via interfaces to transmission and alarm equipments, relay outputs as well as inputs and monitored outputs. The planimetric panels and command panels for the firemen are connected via bus to an external apparatus, the contact with higher-level systems is ensured by serial data interfaces. The innovative system allows you to design, program and control in a simple and intuitive way.
The effectiveness of a fire detection system is closely related to the ability to detect and report promptly a dangerous situation, avoiding false alarms. So it’s not possible to disregard a specific and professional design for the fire detection system as well as the installation of smoke and gas detection.
Just because the protection and the safety of people is so important, such plants are ruled in Italy and in Europe. It is essential therefore to be professionals, capable of performing in all the tasks required by the regulations and by the Fire Department.
The Zanocco Sas company is specialized in the design, installation and maintenance of fire detection systems for the protection of public administrations, schools, health facilities, industrial companies, commercial banks, hotels and parking lots. It is also able to offer support and advice to obtain examination projects of the Fire Department to issue the certificate of fire prevention, for the preparation of legal expertises on plant operations and for processing of emergency and evacuation plans.