The electricity produced by dissimilar materials through physical contact and separation.Read in Detail about Static Electricity. … [Read more...]
Spread loading
The practice of loading a number of tanks simultaneously to reduce the velocity of the cargo in the pipelines serving individual tanks to avoid static electricity generation when loading static accumulator cargoes. … [Read more...]
Spontaneous combustion
The ignition of material brought about by a heat producing (exothermic) chemical reaction within the material itself without exposure to an external source of ignition. … [Read more...]
Sour crude oil
A crude oil containing appreciable amounts of hydrogen sulphide and/or mercaptans. … [Read more...]
Sounding pipe
A pipe extending from the top of the tank to the bottom through which the contents of the tank can be measured. The pipe is usually perforated to ensure the level of liquid in the pipe is the same as the level of liquid in the body of the tank and to prevent the possibility of spillages. The pipe should be electrically bonded to the ship’s structure at the deck and at its lower end. … [Read more...]
Settling time
The time it takes for tank contents to stop moving once filling has stopped. The movement can be because of thermal currents, solids and/or water settling or of gas bubbles rising. Typically this time is 30 minutes. … [Read more...]