In this lesson, you will learn more about how static electricity is formed and why you must be aware of static electricity risks when handling flammable fluids.
This lesson will explain the stages leading to a potentially hazardous electrostatic discharge.
Conductivity differs between different materials. To know how to handle your equipment onboard, you will learn more about the classification of materials in this lesson.
In this lesson, you will learn more about static accumulators and the importance of interting when handling flammable fluids.
In this lesson, you will learn more about what are the hazards caused by static electricity.
What can you do to minimize the risks of static electricity? In this lesson, you will learn more about precautions to prevent incidents that electrostatic discharges may cause.
Step 2 of 3•1 minute read
Under normal conditions, gases are highly insulating and this has important implications with respect to mists and particulate suspensions in air and other gases. Charged mists are formed during the ejection of liquid from a nozzle, for example:
Although the liquid, for example, water, may have very high conductivity, the relaxation of the charge on the droplets is hindered by the insulating properties of the surrounding gas. Fine particles present in inert flue gas, or created during discharge of pressurised liquid carbon dioxide, are frequently charged.
The gradual charge relaxation, which does occur, is the result of the settling of the particles or droplets and, if the field strength is high, of corona discharge at sharp protrusions. Under certain circumstances, discharges with sufficient energy to ignite hydrocarbon gas/air mixtures can occur.