What is HRC
Hazard Risk Category (HRC) is a rating range directly related to ATPV. There are 5 HRCs ranging from 0 to 4, with a hazard risk of 0 presenting the least risk and a hazard risk of 4 being the greatest risk.
|
Hazard
Risk Category |
Clothing Description
(Typical number of clothing layers is given in parentheses) |
Required Minimum
Arc Rating of PPE Cal/cm2 |
 |
FR shirt and FR pants or FR coveralls (1 layer)
|
4
|
 |
Cotton underwear plus FR shirt and FR pants (1 or 2 layers)
|
8
|
 |
Cotton underwear plus FR shirt and FR pants plus FR coveralls, or Cotton underwear plus two FR coveralls (2 or 3 layers)
|
25
|
 |
Cotton underwear plus FR shirt and FR pants plus multilayer flash suit (3 or more layers)
|
40
|
