stevenal wrote:
If C(11) and C(12) were only referring to when arc rated clothing was required, there would be no need for most of the language provided in those sections.
Also, don't forget the OSHA general duty clause.
The task mentioned appears to fit in Table 130.5(C) under the "likely" category.
What exactly is the downside of wearing an arc-rated net for this task, or even making it part of your daily uniform?
When we do an AF study and and get the incident energy values we don't base it on whether it is likely to occur or not, only if it happens this is what the hazard will be.
If you have a panel with a 7 cal/cm2 label and used Table 130.5(C) and it said no likelihood, would you tell your employee not to wear arc flash PPE?
The downside has two parts, one from a cost perspective AR hair nets and beard nets are expensive and are treated like a disposable item vs being laundered like a uniform. The other is lines in 70E like the last sentence of 130.7(C)(3) create confusion for workers who have to use PPE and safety professionals that have to create rules and procedures in manufacturing. We tell workers that less than 1.2 cal/cm2 no arc rated PPE is required but then say you must wear arc rated hair nets if they are required.
