Stable stratification of fluids occurs when each layer is less dense than the one below it.

The pipe or trunking that conveys exhaust gases from the engine to the atmosphere.

Stack effect or chimney effect is the movement of air into and out of buildings, chimneys, flue-gas stacks, or other containers, resulting from air buoyancy.

The waste products from fuel combustion that exhausts to atmosphere via a dedicated pipe or trunking.

A type of a hatch cover in which the individual panels may by stacked to provide various opening arrangements.

In hydrology, stage refers to the water level in a river or stream with respect to a chosen reference height.

Stainless steel is a group of iron-based alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting and also provides heat-resistant properties.

Interior stairways, lifts and escalators (other than those entirely contained within the machinery spaces) and enclosures thereto.

Individuals or companies that have a vested interest in a process.

A stall on a turbine blade occurs when air passes over it in such a way that the generation of lift rapidly decreases.

Stall-regulated wind turbine have blades designed so that when wind speeds are high, the rotational speed decreases with increasing wind speed.

A vertical column supporting decks, flats, girders, etc; also called a pillar. Rail stanchions are vertical metal columns with fence-like rails mounted on them.

Used in isolated solar systems where the inverter draws its DC energy from batteries charged by photovoltaic arrays.

A stand-alone power system also known as remote area power supply, is an off-the-grid electricity system for locations that are not fitted with an electricity distribution system.

The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar).

The standard atmosphere (atm) is a unit of pressure defined as 101325 Pa (1.01325 bar).

Standard temperature and pressure are standard sets of conditions for experimental measurements to be established to allow comparisons to be made between different sets of data.

A standard cubic foot (scf) is a unit used both in the natural gas industry to represent an amount of natural gas and in other industries where other gases are used.

A test in which specimens of the relevant bulkheads or decks are exposed in a test furnance to temperatures corresponding to the standard time-temperature curve as defined by Annex 1 of Part 3 of IMO Fire Tests Procedures Code.

Loading conditions to be examined for the purpose of assessing whether the stability criteria are met.