A revised process can release flammable vapor around equipment previously selected for a nonhazardous area. What must be evaluated before operation?
- APaint the equipment red
- BIncrease breaker ratings
- CAssume existing equipment remains suitable
- Reclassify and use suitable equipment
Where to look it up
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.307
Why D is correct
Reassess the hazardous-area classification and verify equipment, wiring and protection suitable for the resulting conditions. General-purpose equipment cannot be assumed suitable simply because it was installed before the process changed. The facts do not establish a particular division or zone.