A Faraday cage or Faraday shield is an enclosure used to block electromagnetic fields.

A water or refrigerant coil through which air is circulated for conditioning.

Failure mode and effects analysis is the process of reviewing as many components, assemblies, and subsystems as possible to identify potential failure modes in a system and their causes and effects.

Failure causes are defects in design, process, quality, or part application, which are the underlying cause of a failure or which initiate a process which leads to failure.

Failure analysis is the process of collecting and analyzing data to determine the cause of a failure, often with the goal of determining corrective actions or liability.

Failure is the state or condition of not meeting a desirable or intended objective, and may be viewed as the opposite of success.

Fail-safe is a design feature or practice that in the event of a specific type of failure, inherently responds in a way that will cause minimal or no harm to other equipment, to the environment or to people.

The Fahrenheit scale is a temperature scale based on one proposed in 1724 by the physicist Daniel Gabriel Fahrenheit. It uses the degree Fahrenheit (°F) as the unit.

A factory, manufacturing plant or a production plant is an industrial site, often a complex consisting of several buildings filled with machinery, where workers manufacture items or operate machines which process each item into another.

In engineering, a factor of safety, also known as (and used interchangeably with) safety factor (SF), expresses how much stronger a system is than it needs to be for an intended load.

The extraction of petroleum is the process by which usable petroleum is drawn out from beneath the earth's surface location.

Extra-low voltage is an electricity supply voltage in a range which carries a low risk of dangerous electrical shock.

The costs indirectly borne by society as a whole as a consequence of using that energy source.

A dust explosion is the rapid combustion of fine particles suspended in the air within an enclosed location.

Exploration geophysics is an applied branch of geophysics and economic geology, which uses physical methods, such as seismic, gravitational, magnetic, electrical and electromagnetic at the surface of the Earth to measure the physical properties of the subsurface, along with the anomalies in those properties.

An experiment is a procedure carried out to support or refute a hypothesis.

A device that reduces the pressure of liquid refrigerant entering the evaporator and meters and regulates the flow of refrigerant so that it can properly absorb heat.

In thermodynamics, the term exothermic process describes a process or reaction that releases energy from the system to its surroundings, usually in the form of heat, but also in a form of light, electricity, or sound.

A section of the engine exhaust that reduces or muffles the sound of an engine exhaust system.

A boiler that utilises the heat from engine exhausts to create steam.