Fire Extinguishing system ALFA-FOG

Advantages of the Alpha-Fog® fire extinguishing system

• ALFA-FOG® effectively extinguishes fires of any complexity, including large fires in machine rooms, as well as cable channels, power generator rooms and electrical control rooms.
• ALFA-FOG® is the only alternative to bulk gas systems. Fires are extinguished with fresh water without additives and chemical additives, which usually require regular replacement. The proposed extinguishing method is safe for people and causes minimal damage to equipment.
• ALFA-FOG® uses significantly less water than a traditional unit for the same application, demonstrating higher efficiency.

Why our customers choose Alpha-Fog®

• Unique Russian development of sprinklers
• Large distance between sprinklers
• Significantly reduced water consumption with the same extinguishing efficiency than a traditional low pressure system for the same application
• A strong cooling effect when water droplets turn into steam upon contact with the fire
• Rapid expansion of water droplets reduces the oxygen content in the combustion zone
• An environmentally friendly and safe method of fire extinguishing for people
• Highly effective fire protection system with fast response that is easy to return to service
• Minimal damage to equipment and faster recovery
• Reduced downtime and cleanup costs after a fire

Used to extinguish fires:

• in buildings, premises and production facilities, with the exception of production facilities processing flammable gases, gasoline, alcohols, ethers and other flammable liquids with a flash point in a closed crucible of less than 60°C;
• in book depositories, library premises, storage facilities, archives with stationary shelving and in other premises of similar purpose, in which rack storage on stationary shelving is used;
• in data center buildings and computer rooms;
• in cable structures;
• in parking lots with mechanized and semi-mechanized parking;
• for the creation of water curtains and cooling systems for process equipment and building structures, including locally;
• in spaces behind false ceilings and false floors;
• to protect structural elements of buildings and structures;
• to create fire localization systems and irrigation of evacuation routes, creation of safety zones

Scope of application: premises of libraries, book depositories, circuses, storage of flammable museum valuables, storage facilities, museums and exhibitions, art galleries, concert and cinema halls, computers, shops, administrative buildings, hotels, hospitals, various production premises, garages and parking lots, archive premises, etc.

Hydraulic and fire tests in accordance with the requirements of current regulatory documents were conducted at the Research Institute of Advanced Research and Innovative Technologies in the Field of Life Safety of the St. Petersburg University of the State Fire Service of the Ministry of Emergency Situations of Russia named after Hero of the Russian Federation, General of the Army E.N. Zinichev.

The city main water supply or a tank with a fire-fighting reserve of water can be used as a water source. The size of the tank depends on the fire load in the room, the estimated operating time of the installation, the capacity of the pump units and other design solutions.

System characteristics:

• Working pressure: 60-80 MPa.
• Water consumption (per sprayer):
• Area protected by one sprayer:
• Time of filling the room with super-dense water fog V= one
• sprayer:
• Stainless steel piping
• Threaded connections with serviceability, "cutting ring" type.
• Complete suppression of fires from minimum to maximum fire intensity in full-scale fire tests within up to maximum minutes of extinguishing.
• Passed tests for resistance to external factors.
• Approved for use by the Russian Emergencies Ministry

The ALFA-FOG® installation consists of a water source, a high-pressure pumping unit, control units, a stainless steel pipeline network and sprayers - sprinklers and/or deluge. All the main components of the installation are manufactured at the POZHINTEKH Group of Companies' own production facilities using the latest high-precision CNC lines. The use of high-quality materials for the manufacture of the installation components contributes to its reliability and long service life.

(AUP TRV VD) ALFA-FOG® consists of the following main elements:

• pumping unit (one or more);
• fire control device;
• component for fire control device;
• pipeline;
• sprayers;
• sectional control units;
• set of mounting parts.

If necessary, non-standard elements can be included in the AUP: logic blocks, junction boxes, signal distribution devices, etc.

Pumping unit

ALFA-FOG® water mist fire extinguishing systems operate at high pressure, over 2.0 MPa. The ALFA-FOG® pumping system is an advanced development in the field of water mist fire extinguishing, combining the simplicity of the mechanical design with the flexibility and wide customization of the programmable control system. The modular structure of the units with well-thought-out access zones simplifies the installation process and optimizes the use of service areas.

The pumping unit is designed to create and maintain the required pressure of the working environment in the automatic fire control system.

For a specific automated control system, it is formed on the basis of one or several pump modules, each of which in turn consists of one or several pump units (electric motor, pump, frame).

In general, it consists of several pump modules, one of which is the main one (with a jockey pump and sensors).

In a particular case, the pumping unit consists of one main (with a jockey pump and sensors) pumping module.

Water consumption of one block is from 50 l/min.

Water pressure in operating mode from 7.5 MPa.

Water pressure in standby mode from 2.5 MPa.

Power consumption from 8.0 kW.

Weight from 180 kg

In standby mode, fresh water is supplied to the pumping unit.

The standby mode is the main operating mode of the automatic fire extinguishing system.

In the operating mode, water is supplied to the pump unit under a pressure of at least 0.01 MPa. The water supply mode is controlled automatically by signals from the PPU.

The pump unit can be started automatically or remotely.

Fire alarm device/control panel

The pump unit control panel/device performs:

• receiving and issuing signals about the current operating mode of the pumping unit, as well as about the presence of faults, starting electric pumps;
• remote control of the system – by automated opening of sectional deluge valves based on signals from the central control station, from local push-button control stations, from the fire alarm system or from the control panel;
• display of the current state of the system and its malfunctions, as well as the generation of sound signals when situations arise that require the operator's attention;
• providing information about the current state of the system and its malfunctions to external information systems

The fire control device (FCD) is intended:

• for receiving and issuing signals about the current operating mode of the pumping unit;
• for remote control of the automatic fire alarm system – by automated opening of the sectional drencher control unit;
• to display the current state of the AUP and its malfunctions, as well as to generate sound signals when situations arise that require the operator's attention;
• to provide information about the current state of the automated control system and its malfunctions to external information systems;
• for controlling light and sound warning devices;
• for receiving signals from limit switches of shut-off valves;
• to switch from the main power source to the backup one (and back, when the power is restored);

Switching is done automatically, since the PPU has a built-in automatic network switch.

Component for fire control device

The component for the fire control device (abbreviated as FCD) is intended:

• for remote opening of sectional drencher control units;
• for remote start of the pumping unit;
• to display the current state of the AUP and its malfunctions, as well as to generate sound signals when situations arise that require the operator's attention.

The control system is developed according to the Customer’s requirements, the external appearance is agreed upon with the Customer.

Pipeline

The pipeline network of Alpha-Fog® units is made of high-quality stainless steel. All pipeline components are designed for a maximum pressure of 60 MPa and undergo mandatory hydraulic tests under a pressure of 21 MPa during installation. The pipeline system is mounted on threaded connections with cutting rings; welding is not required during installation. As a rule, the supply pipelines have Ø 38 mm x 3 mm;

power and distribution – Ø 30 mm x 2.5 mm, Ø 12 mm x 1.5 mm

Sprayers

Sprinkler nozzles are the key element of ALFA-FOG® installations. Selecting the appropriate type of sprinkler or drencher ensures optimal parameters for supplying finely atomized water for extinguishing a fire, depending on the characteristics of the protection zone and the fire load.

ALFA-FOG® drenchers are used as part of drencher sections to protect unheated premises, as well as other types of premises in accordance with the requirements of the technical specifications or taking into account the technological process. The control unit supplies water upon a signal from the automatic fire alarm system, due to which finely atomized water is supplied from all sprayers simultaneously to the entire area protected by the section.

Drencher Alpha-Fog®

ALFA-FOG® sprinklers are precision-engineered products that utilize temperature-sensitive bulbs with an ultra-fast response index.

Sprinkler Alpha-Fog®

Thermal lock (thermo flask) response temperature:

• 57 °C – recommended for use to protect residential and public premises, control posts;
• 68°С – recommended for use to protect electrical panels, power units and other rooms;
• 79°C – recommended for use in food preparation areas;
• 93°C – recommended for use in drying chambers and other rooms with temperatures above 50°C;
• 141°C – recommended for use to protect saunas
• 182°С – (?)

Sprayers are designed to supply water to the protected premises. Depending on the type of AUP, drenchers or sprinklers can be used as sprayers.

Depending on the type of thermo flask used, the operating temperature of the sprinkler type sprayer may vary.

It is recommended to use sprinkler-type sprayers with an orange thermo-flask (operating temperature 57 °C) if the operating conditions of the premises do not imply special temperature conditions.

The sprayers are equipped with a filter element with a filter cell more than 5 times smaller than the diameter of the sprayer outlet. The maximum working pressure on the sprayer is 16 MPa. The maximum pressure is 20 MPa. The sprayer installation location is the ceiling. It is allowed to install the sprayers at an angle of up to 90°.

Control nodes

Control units are designed to divide systems into sections. The number and type of control units are determined by the number of sprayers, the type and location of the protected premises, and the presence of equipment in the premises that requires separate protection. Control units are usually located in a separate room, which is subject to certain requirements specified in regulatory documents. It is possible to place control units in the protected room, provided that they are installed in a specialized cabinet. Control units are also used to divide the pipeline network into sections that can undergo maintenance independently of each other, without taking the installation out of operation.

The control unit may generally contain a liquid flow indicator, a rod position sensor, a pressure gauge (pressure indicator), a manual control handle, and inlet and outlet pipes.

Sectional deluge control unit

The sectional deluge control unit (SDC) is designed to divide the AUP pipelines into independent deluge sections. The normal position of the valve in the AUP standby mode is closed. The SDC can be opened remotely from the PPU and KPU, automatically by signals from external systems, and manually directly on the unit itself. The SDC is closed manually when the pump unit is stopped.

Sectional sprinkler control unit

The sectional sprinkler control unit (SCU) is designed to divide the AUP pipelines into independent sprinkler sections. The unit is controlled manually. The normal SCU position in the AUP standby mode is open.

Sectional combined control unit

The sectional combined control unit (SCU) is designed to divide the AUP pipelines into independent sprinkler sections with preliminary activation. The SCU can be opened remotely from the PPU and KPU, automatically by signals from external systems, and manually directly on the unit itself. The SCU is closed manually when the pump unit is stopped. The normal position of the SCU in the AUP standby mode is closed. The appearance of the SCU control unit is shown in the figure.

Internal fire-fighting water supply TRV VD ALFA-FOG®

The internal fire-fighting water supply (IFW) TRV VD ALFA-FOG® consists of the following main elements:

• pumping unit;
• fire control device;
• component for fire control device;
• pipeline;
• fire hydrant cabinet;
• high pressure hose cartridge;
• hand fire nozzle;
• set of mounting parts.

The number of simultaneously operating fire nozzles is determined by SP 10.13130.2009 or by special technical conditions for design and construction in terms of ensuring fire safety.

The water consumption of the VPV TRV VD ALFA-FOG® is determined by the product of the minimum water consumption of the manual fire nozzle in the solid stream mode and the number of simultaneously operating fire nozzles.

VPV TRV VD ALFA-FOG® can be combined with AUP TRV VD ALFA-FOG® by a common pumping unit with devices and common main risers. When installing fire hydrants on automatic fire extinguishing systems, their operating time should be taken equal to the operating time of the automatic fire extinguishing systems.

Manual fire nozzle

The high-pressure hand fire nozzle is designed to form and direct a solid and finely atomized water stream when extinguishing class A and B fires according to GOST 2733-82, in buildings and structures of various purposes. It can be used both as part of ALFA-FOG® fire extinguishing systems and as part of separate systems. FIRE NOZZLE CHARACTERISTICS COMPACT JET SPRAYED JET Minimum working pressure on the nozzle 2.0 MPa 5 MPa Maximum working pressure 8 MPa 8 MPa Jet range 20 m 12 m Water consumption 1.3 l/s 0.45 l/s Torch angle 100° of the internal high-pressure fire water supply.

The design of the barrel provides the ability to provide:

• formation of a continuous stream at the outlet of the nozzle;
• uniform distribution of the spray jet across the spray cone.

The manual fire nozzle allows you to adjust the water supply from "compact" to "spray" mode. The compact mode with a jet range of 25 meters is convenient for extinguishing solid flammable materials, the spray mode is effective when extinguishing spills of flammable liquid, it also provides protection for the nozzle operator from high temperatures

RVD coil

A high-pressure hose reel is a device for placing (unwinding) pre-connected high-pressure hoses (HPH) with a manual low-flow fire nozzle (PK-m) for their laying and/or carrying, providing the ability to manually extinguish fires.