With the rapid development of the electrification industry, electrical accidents are occurring frequently, threatening the safety of our lives and property.
Avoid the occurrence of accidents, mainly depends on everyone in the work process of standardized operation, always abide by the safety essentials and rules, then, in the electrical field, what are the most basic safety essentials?
Safety integrity level
SIL represents the level of safety integrity and is a means of indicating how much risk needs to be reduced to an acceptable level. According to IEC 61508, there are four levels of safety, and from one level to the next, safety increases by an order of magnitude. SIL 4 is not seen in machine and factory automation scenarios because, in general, no more than one person is at risk in such situations. SIL 4 is aimed at applications such as nuclear power and railways where hundreds or even thousands of people may be injured. There are other functional safety standards, such as ASIL (Vehicle safety integrity Levels) A, B, C, and D for automotive use, and ISO 13849. Their performance levels A, B, C, D, and E can correspond to the SIL 1 to SIL 3 scale.