IEC 60092-506 pdf download Electrical installations in ships – Part 506: Special features – Ships carrying specific dangerous goods and materials hazardous only in bulk 4.3 Dangerous goods as defined in 1.2b) and 1 .2c) 4.3.1 Classes 4.1, 4.2, 9 and MHB capable of creating explosive dust atmosphere Hazardous areas (comparable with zone 1 ): a) closed cargo spaces as...