2008 p - arc flash hazard assessment

7/22/2019 2008 p - Arc Flash Hazard Assessment

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HazardRiskHazardRiskHazardRiskHazardRisk

Category (HRC)

Clothing Description

(Typical number of clothing layers is

given in parentheses)

Required Minimum

Arc Rating of PPE

(cal/cm2)

Required Minimum

Arc Rating of PPE

(J/cm2)

0

Non-melting flammable materials (i.e.untreated cotton, wool, rayon, or silk, or

blends of these materials) with fabric

weight at least 4.5 oz/yd2

N/A N/A

1 FR shirt and FR pants or FR coverall (1) 4 16.7

2

Cotton Underwear - conventional short

sleeve and brief/shorts, plus FR shirt

and FR pants (1 or 2) 8 33.5

3

Cotton Underwear plus FR shirt and FR

pants pluse FR coverall, or cotton

underwear plus two FR coveralls (2 or

3) 25 104.6

4

Cotton underwear plus FR shirt and FR

pants plus multilayer flash suit (3 or

more) 40 167.4


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Element Type Equipment Type "in Box"

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Overcurrent (kV>1.0) Switch Gear TRUE

Overcurrent(kV


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2008 p - arc flash hazard assessment

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