What is intrinsic safety?
Answer:
Intrinsic safety or "Intrinsically Safe" is a term applied to a special group of electrical and instrumentation equipment used in explosive atmospheres, as would occur in petroleum refineries.
The intrinsically safe device has such limited electrical energy available that it cannot release enough energy under any condition (even fault) to ignite the fuel-air mix (explosive atmosphere) that it is located in or passes through.
Think of a fuel tank (gasoline or petrol), with some vapor space above the liquid fuel. Assume that the fuel-air mix will always be just perfect for creating an explosion, if a spark is added. Your challenge is to measure the liquid level, pressure, temperature, and whatever else might need to be known, inside the tank for overall process control. Choose your instruments carefully, because the wrong choice will ignite the explosive mixture of fuel and air. This is where intrinsically safe instruments (circuits) are applied.
a unit that is intrinsically safe means that the unit has been designed taking into account the safety measures by minimising any hazard risks. These apply to any equipment in a plant or even our surroundings, not only electrical equipments
Any electronic device that has been determined not to cause any open electric arcs when used. Oil refineries and chemical plants require all electronics inside production areas to be intrinsically safe.
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers: