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Firefighter

Rescuer trained to extinguish fires and save people

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A team of firefighters work to contain a burning barn in St. Clements, Ontario
DallasPenner · CC BY-SA 4.0

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Firefighters may also provide ordinance regulations, safety requirements, and administrative public functions for the communities and areas they are subject to jurisdiction to. Male firefighters are sometimes referred to as firemen (and, less commonly, female firefighters as firewomen).

The fire department, also known in some countries as the fire brigade or fire service, is one of the three main emergency services. From urban areas to aboard ships, firefighters have become ubiquitous around the world.

The skills required for safe operations are regularly practiced during training evaluations throughout a firefighter's career. Initial firefighting skills are normally taught through local, regional or state-approved fire academies or training courses. Depending on the requirements of a department, additional skills and certifications may also be acquired at this time.

Firefighters work closely with other emergency response agencies such as the police and emergency medical service. A firefighter's role may overlap with both. Fire investigators or fire marshals investigate the cause of a fire. If the fire was caused by arson or negligence, their work will overlap with law enforcement. Firefighters may also provide some degree of emergency medical service (EMS).

Duties

Fire suppression

A fire burns due to the presence of three elements: fuel, oxygen and heat. This is often referred to as the fire triangle. Sometimes it is known as the fire tetrahedron if a fourth element is added: a chemical chain reaction which can help sustain certain types of fire. The aim of firefighting is to deprive the fire of at least one of those elements. Most commonly this is done by dousing the fire with water, though some fires require other methods such as foam or dry agents. Firefighters are equipped with a wide variety of equipment for this purpose that include ladder trucks, pumper trucks, tanker trucks, fire hose, and fire extinguishers.

See also Fire suppression for other techniques.

Structural firefighting

When fire departments respond to structure fires, the priorities are life safety, incident stabilization, and property conservation. When the first fire department arrives on-scene, crews assess the fire to determine the degree of risk and most appropriate response strategy, including offensive or defensive tactics from in or outside. Ultimately, the incident commander is responsible for determining strategy.

While structure fires can sometimes be limited to small areas of a structure, wider collateral damage due to smoke, water and burning embers is common. Crews may need to force entry to gain access into the structure. Utility shutoff (such as gas and electricity) is a priority for arriving fire crews. Some structures may require additional training and specialized firefighting tactics. For example, row house fires require specific tactics to decrease risks.

Buildings that are made of flammable materials such as wood are different from building materials such as concrete. Generally, a "fire-resistant" building is designed to limit fire to a small area or floor. Other floors can be safe by preventing smoke inhalation and damage. All buildings suspected to be or on fire must be evacuated, regardless of fire rating.

Structure fires may be fought from the interior and/or exterior. Interior crews may extend fire hose lines inside the building, find the fire and cool it with water. Exterior crews may direct water into windows and other openings, or at any surrounding fuel at risk of igniting.

Firefighting priorities and tactics

The incident commander should consider these priorities and firefighting tactics at a structure fire:

  • Life safety – primary and secondary "All Clear(s)" (A/C)
  • Property conservation – "Loss Stopped" (L/S)
  • Post fire control firefighter decontamination (Decon)
  • Customer Stabilization – Short term

Some firefighting tactics may appear to be destructive, but often serve specific needs. For example, during ventilation, firefighters are forced to either open holes in the roof or floors of a structure (called vertical ventilation), or open windows and walls (called horizontal ventilation) to remove smoke and heated gases from the interior of the structure. Such ventilation methods are also used to improve interior visibility to locate victims more quickly. Ventilation helps to preserve the life of trapped or unconscious individuals as it releases the poisonous gases from inside the structure. Vertical ventilation is vital to firefighter safety in the event of a flashover or backdraft scenario. Releasing the flammable gases through the roof eliminates the possibility of a backdraft, and the removal of heat can reduce the possibility of a flashover. Flashovers, due to their intense heat (900–1,200 °F (480–650 °C)) and explosive temperaments, are commonly fatal to firefighter personnel. Precautionary methods, such as smashing a window, reveal backdraft situations before the firefighter enters the structure and is met with the circumstance head-on. Firefighter safety is the number one priority.

Whenever possible during a structure fire, property is moved into the middle of a room and covered with a salvage cover, a heavy cloth-like tarp. Various steps such as retrieving and protecting valuables found during suppression or overhaul, evacuating water, and boarding windows and roofs can divert or prevent post-fire runoff.

Wildland firefighting

Wildfires (known in Australia as bushfires) require a unique set of strategies and tactics. Wildfires have some ecological role in allowing new plants to grow, therefore in some cases they will be left to burn. Priorities in fighting wildfires include preventing the loss of life and property as well as ecological damage.

Aircraft rescue and firefighting

Airports employ specialist firefighters to deal with potential ground emergencies. Due to the mass casualty potential of an aviation emergency, the speed with which emergency response equipment and personnel arrive at the scene of the emergency is of paramount importance. When dealing with an emergency, the airport firefighters are tasked with rapidly securing the aircraft, its crew and its passengers from all hazards, particularly fire. Airport firefighters have advanced training in the application of firefighting foams, dry chemical and clean agents used to extinguish burning aviation fuel.

Rescue

Firefighters rescue persons from confinement or dangerous situations such as burning buildings and crashed vehicles. Complex, infrequent situations requiring specialized training and equipment include rescues from collapsed buildings and confined spaces. Many fire departments, including most in the United Kingdom, refer to themselves as a fire and rescue service for this reason. Large fire departments, such as the New York City Fire Department and London Fire Brigade, have specialist teams for advanced technical rescue. As structure fires have been in decline for many years in developed countries such as the United States, rescues other than fires make up an increasing proportion of their firefighters' work.

Emergency medical services (EMS)

Firefighters frequently provide some degree of emergency medical care. In some jurisdictions first aid is the only medical training that firefighters have, and medical calls are the sole responsibility of a separate emergency medical services (EMS) agency. Elsewhere, it is common for firefighters to respond to medical calls. The impetus for this is the growing demand in medical emergencies and the significant decline in fires.

In such departments, firefighters are often certified as emergency medical technicians in order to deliver basic life support, and more rarely as paramedics to deliver advanced life support. In the United Kingdom, where fire services and EMS are run separately, fire service co-responding has been introduced more recently. Another point of variation is whether the firefighters respond in a fire engine or a response car.

Hazardous materials

Fire departments are usually the lead agency that responds to hazardous materials incidents. Specialized firefighters, known as hazardous materials technicians, are trained in chemical identification, leak and spill control, and decontamination. Specific procedures and equipment are needed to address fire at a property where hazardous materials are being used or stored.

Fire prevention

Fire departments frequently provide advice to the public on how to prevent fires in the home and work-place environments. Fire inspectors or fire marshals will directly inspect businesses to ensure they are up to the current building fire codes, which are enforced so that a building can sufficiently resist fire spread, potential hazards are located, and to ensure that occupants can be safely evacuated, commensurate with the risks involved.

Fire suppression systems have a proven record for controlling and extinguishing unwanted fires. Many fire officials recommend that every building, including residences, have fire sprinkler systems. Correctly working sprinklers in a residence greatly reduce the risk of death from a fire. With the small rooms typical of a residence, one or two sprinklers can cover most rooms. In the United States, the housing industry trade groups have lobbied at the State level to prevent the requirement for fire sprinklers in one or two family homes.

Other methods of fire prevention are by directing efforts to reduce known hazardous conditions or by preventing dangerous acts before tragedy strikes. This is normally accomplished in many ways such as conducting presentations, distributing safety brochures, providing news articles, writing public safety announcements (PSA) or establishing displays in high traffic areas. Ensuring that each household has working smoke alarms, is educated in the proper techniques of fire safety, has an evacuation route and rendezvous point is of top priority in public education for most fire prevention teams in almost all fire department localities.

Fire investigators, who are experienced firefighters trained in fire cause determinism, are dispatched to fire scenes in order to investigate and determine whether the fire was a result of an accident or intentional. Some fire investigators have full law enforcement powers to investigate and arrest suspected arsonists.

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