An inverter (or power inverter) is an electronic device or circuitry that changes direct current (DC) to alternating current (AC) or vice versa

The process by which a neutral atom or molecule acquires or loses an electric charge. The production of ions.

Radiation that produces ionisation in matter.

An event where matter has been externally subjected to ionising radiation.

A professional technique used on a casualty, especially if there is suspected spinal injury, to open their airway

A decision model presented within the JESIP joint Doctrine and used to make analytical decisions

An assessment of risk taking into account the requirements of all emergency response organisations present at an incident

Military body responsible for formal liaison (civil-military and tri-Service) within an Army Regional Brigade’s area

Fuels that provide vertical continuity that allow fire to move through the vertical fuel arrangement

The fastest water travelling with no restrictions in a straight line down a river

During a search, clues will be gathered about the person. Occasionally, the clue will be solid enough to be reasonably certain the search subject left it. Since the LKP is more recent than the PLS, this provides a new starting point for the search.

This is any liquid that, in the course of passing through matter, extracts soluble or suspended solids or any other material through which it has passed.

Person with overall responsibility for a RNLI lifeboat station

This is a rail term for the line being blocked and is a stronger term than requesting trains to be stopped.

Member of the aircrew (civilian or military) who is in charge of planning and distributing cargo and passengers on an aircraft

Known as:
Local resilience forums (England and Wales)
Regional or local resilience partnerships (Scotland)
Emergency preparedness groups (Northern Ireland)

Lower explosive limit is the lowest concentration of vapour/gas in air at a given pressure and temperature that will propagate a flame when exposed to an ignition source.

Supply systems for dangerous fluids as defined in schedule 2 of Pipeline Safety Regulations, which include high pressure natural gas, other gases, oils and chemicals

A wide range of materials that use the inherent strength and durability of woven fibres bonded together with resins. Previously known as Man-made mineral fibres

Maintaining the head and neck of an unconscious casualty in neutral alignment

Maritime and Coastguard Agency co-ordination centre for oil pollution incidents at sea that require a national response

Specialist fire and rescue service teams strategically located around the country, for response to emergencies at sea

Long range military aircraft for detecting, locating, tracking, observing and, if necessary, attacking surface vessels and submarines

Her Majesty’s Coastguard regional centre overseeing and co-ordinating the search and rescue operations within a region

Her Majesty’s Coastguard unit subordinate to a Maritime Rescue Coordination Centre