Fire department

A fire department (United States and Canada) or fire brigade (United Kingdom and Commonwealth) (also known as a fire and rescue service or simply fire service) is a public or private organization that provides predominantly emergency firefighting and rescue services for a certain jurisdiction, which is typically a municipality, county, or fire protection district. A fire department usually contains one or more fire stations within its boundaries, and may be staffed by career firefighters, volunteer firefighters, or a combination thereof (referred to as a combination department).

A fire department may also provide "fire protection" or fire prevention services, whereby firefighters visit homes and give fire safety advice and fit smoke alarms for members of the public. In many countries fire protection or prevention is seen as an important role for the fire service, as preventing a fire from occurring in the first place can save lives and property.

Organization

Fire departments are organized in a system of administration, services, training, and operations; for example:

Fire

Fire is the rapid oxidation of a material in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. Slower oxidative processes like rusting or digestion are not included by this definition.

Fire is hot because conversion of the weak double bond in molecular oxygen, O₂, to the stronger bonds in the combustion products carbon dioxide and water releases energy (418 kJ per 32 g of O₂); the bond energies of the fuel play only a minor role here. At a certain point in the combustion reaction, called the ignition point, flames are produced. The flame is the visible portion of the fire. Flames consist primarily of carbon dioxide, water vapor, oxygen and nitrogen. If hot enough, the gases may become ionized to produce plasma. Depending on the substances alight, and any impurities outside, the color of the flame and the fire's intensity will be different.

Fire in its most common form can result in conflagration, which has the potential to cause physical damage through burning. Fire is an important process that affects ecological systems around the globe. The positive effects of fire include stimulating growth and maintaining various ecological systems. Fire has been used by humans for cooking, generating heat, light, signaling, and propulsion purposes. The negative effects of fire include hazard to life and property, atmospheric pollution, and water contamination. If fire removes protective vegetation, heavy rainfall may lead to an increase in soil erosion by water. Also, when vegetation is burned, the nitrogen it contains is released into the atmosphere, unlike elements such as potassium and phosphorus which remain in the ash and are quickly recycled into the soil. This loss of nitrogen caused by a fire produces a long-term reduction in the fertility of the soil, which only slowly recovers as nitrogen is "fixed" from the atmosphere by lightning and by leguminous plants such as clover.

San Francisco

San Francisco (/sæn frənˈsɪskoʊ/), officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California and the only consolidated city-county in California. San Francisco encompasses a land area of about 46.9 square miles (121 km²) on the northern end of the San Francisco Peninsula, which makes it the smallest county in the state. It has a density of about 18,187 people per square mile (7,022 people per km²), making it the most densely settled large city (population greater than 200,000) in the state of California and the second-most densely populated major city in the United States after New York City. San Francisco is the fourth-most populous city in California, after Los Angeles, San Diego and San Jose, and the 13th-most populous city in the United States—with a Census-estimated 2014 population of 852,469. The city and its surrounding areas are known as the San Francisco Bay Area, and are a part of the larger OMB designated San Jose-San Francisco-Oakland combined statistical area, the fifth most populous in the nation with an estimated population of 8.6 million.

Ride-along

A ride-along is an arrangement for a civilian to spend a shift in the passenger seat of an emergency vehicle, observing the work day of a police officer, firefighter, or paramedic.

Ride-alongs are offered by many police departments around the world. There is a minimum age to participate in a ride-along. Depending on the department, it is often somewhere between the ages of 14 and 18. When participation of those under 18 is permitted, consent from a parent or legal guardian may be required. Those with criminal records or problems on previous ride-alongs may also be barred from participation. The most common form of ride-alongs are Law Enforcement Explorers, Auxiliary or Volunteer Police officers and participants in Citizen's Police Academy programs.

People go on ride-alongs for various reasons. These include interest in a future career in law enforcement, personal interest in law enforcement without such a career, journalists wishing to write reports, and those interested in community relations. Some emergency departments require dispatchers to go on ride-alongs so they can get a first-hand feel for the area they are responsible for. Regardless of the reason, all citizens who meet the department's eligibility requirements are generally welcome on a ride-along.

Department

Department may refer to:

Government and military