a) E – Explosion;b) F – Fire;c) C – Combustible vapor concentrations;d) V – Toxic vapor release;e) S – Electric shock hazard (dielectric breakdown);f) L– Leakage (external to enclosure of DUT);g) R – Rupture (of DUT enclosure exposing hazardous parts as determined by 5.3.3);h) P – Loss of protection controls.