USCG Exam PracticeEngine-room safety and hazardous materials
Under 46 CFR §183.530, electrical equipment installed in a space containing fuel tanks for gasoline must be which of the following?
- A. Watertight and corrosion-resistant
- ✓ Explosion-proof, ignition-protected, or part of an intrinsically safe systemCorrect
- C. Listed under NFPA 70 Article 505 only
- D. Installed in the least hazardous location practicable with no further requirement
Why B is correct
46 CFR §183.530(a) requires that electrical equipment in spaces containing machinery powered by, or fuel tanks for, gasoline or other fuels with a flashpoint of 43.3 °C (110 °F) or lower must be explosion-proof, ignition-protected, or part of an intrinsically safe system. Watertightness alone is not a substitute for ignition protection.
Cited:46 CFR §183.530