Тірі қалу қабілеті және қауіпсіздік аспектілері

Ability to remain alive or continue to exist
Survivability is the ability to remain alive or continue to exist. The term has more specific meaning in certain contexts.

Following disruptive forces such as flood, fire, disease, war, or climate change some species of flora, fauna, and local life forms are likely to survive more successfully than others because of consequent changes to their surrounding biophysical conditions.

In engineering, survivability is the quantified ability of a system, subsystem, equipment, process, or procedure to continue to function during and after a natural or man made disturbance; for example a nuclear electromagnetic pulse from the detonation of a nuclear weapon. For a given application, survivability must be qualified by specifying the range of conditions over which the entity will survive, the minimum acceptable level or post disturbance functionality, and the maximum acceptable downtime.

Survivability denotes the ability of a ship and its on board systems to remain functional and continue designated mission in a man made hostile environment. The naval vessels are designed to operate in a man made hostile environment, and therefore the survivability is a vital feature required from them. The naval vessel’s survivability is a complicated subject affecting the whole life cycle of the vessel, and should be considered from the initial design phase of every war ship. The classical definition of naval survivability includes three main aspects, which are susceptibility, vulnerability, and recoverability; although, recoverability is often subsumed within vulnerability.

The crews of military combat vehicles face numerous lethal hazards which are both diverse and constantly evolving. Improvised Explosive Devices (IEDs), mines, and enemy fire are examples of such persistent and variable threats. Historically, measures taken to mitigate these hazards were concerned with protecting the vehicle itself, but due to this achieving only limited protection, the focus has now shifted to safeguarding the crew within from an ever broadening range of threats, including Radio Controlled IEDs (RCIEDs), blast, fragmentation, heat stress, and dehydration. The expressed goal of "crew survivability" is to ensure vehicle occupants are best protected. It goes beyond simply ensuring crew have the appropriate protective equipment and has expanded to include measuring the overpressure and blunt impact forces experienced by a vehicle from real blast incidents in order to develop medical treatment and improve overall crew survivability. Sustainable crew survivability is dependent on the effective integration of knowledge, training, and equipment.

Threat intelligence identifying trends, emerging technologies, and attack tactics used by enemy forces enables crews to implement procedures that will reduce their exposure to unnecessary risks. Such intelligence also allows for more effective pre deployment training programs where personnel can be taught the most up to date developments in IED concealment, for example, or undertake tailored training that will enable them to identify the likely attack strategy of enemy forces. In addition, with expert, current threat intelligence, the most effective equipment can be procured or rapidly developed in support of operations.

"The capability of a system to fulfill its mission, in a timely manner, in the presence of threats such as attacks or large scale natural disasters. Survivability is a subset of resilience." “The capability of a system to fulfill its mission, in a timely manner, in the presence of attacks, failures, or accidents.”