A specimen that is notched and subjected to alternating stresses until a crack has developed at the root of the notch.

Also known as a junction buoy. A red and green horizontally striped buoy used in the United States to mark the separation of a channel into two channels. The preferred channel is indicated by the color of the uppermost stripe. Red on top indicates that th ...

Category:Sea Words

A solar heating system that preheats water or air that is then heated more by another heating appliance.

Category:Energy Terms

National Preparedness for Response Exercise Program.

Category:Abbreviations

Freight charges paid by the consignor (shipper) prior to the release of the bills of lading by the carrier.

Category:Sea Words

Pressure

Category:Abbreviations

The amount of money required to secure a specified cash flow at a future date at a specified return.

Category:Energy Terms

Force per unit area, usually expressed in pounds per square inch (PSI) or BAR.

Category:Sea Words

The total pressure measured from absolute zero ( i.e., from an absolute vacuum).

Category:Sea Words

An aneroid barometer with a scale graduated in altitude instead of pressure units.

Category:Meteorology

The pressure encountered on the return side of a system.

Category:Sea Words

The pressure at which a pressure operated valve begins to pass a gas.

Category:Sea Words

Is the saturation pressure at the critical temperature.

Category:Sea Words

Is the temperature at which moisture begins to condense in a compressed air system.

Category:Sea Words

Is the total gas pressure (static plus velocity) at the discharge port of the compressor. Velocity pressure is considered only with dynamic compressors.

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The loss in static pressure of a fluid (liquid or gas) in a system due to friction from obstructions in pipes, from valves, fittings, regulators, burners, etc, or by a breech or rupture of the system. Pressurization Testing

Category:Energy Terms

Resistance to flow. Defined as the difference in pressure upstream and downstream.

Category:Sea Words

A device that indicates pressure differential above or below atmospheric pressure.

Category:Sea Words

The rate of decrease of pressure per unit distance at a fixed time.

Category:Meteorology

Is the total pressure (static plus velocity) at the inlet flange of the compressor.

Category:Sea Words