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IEC 60092-506 2nd Edition, June 1, 2003
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Electric Installations in Ships - Part 506: Special Features - Ships Carrying Specific Dangerous Goods and Materials Hazardous Only in Bulk
Additional Comments: BILINGUAL
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This part of IEC 60092 is applicable to the electrical installations on the following types of ships and cargo spaces:

a)  ships and cargo spaces not specifically designed for the carriage of freight containers but intended for the carriage of dangerous goods in packaged form including goods in freight containers and portable tanks;

b)  purpose-built container ships and cargo spaces intended for the carriage of dangerous goods in freight containers and portable tanks;

c)  ro/ro ships and ro/ro cargo spaces intended for the carriage of dangerous goods;

d)  ships and cargo spaces intended for the carriage of solid dangerous goods in bulk and materials hazardous only in bulk (MHB); 

e)  ships and cargo spaces intended for the carriage of dangerous goods, other than liquids and gases in bulk, in shipborne barges.

Dangerous goods, for which safety measures may be required with respect to the electrical equipment, are specified in the IMO documents listed in the Foreword and grouped into the following classes. 

a)  Dangerous goods in packaged form

Class 1  Explosives, except goods in division 1.4, compatibility group S of the IMDG Code

Class 2.1   All flammable gases, compressed, liquefied or dissolved under pressure

Class 3   All flammable liquids having a flashpoint from −18 °C up to 23 °C (closed-cup test)

Class 6.1   All toxic substances having a flashpoint below 23 °C (closed-cup test)

Class 8   All corrosive liquids having a flashpoint 23 °C and below (closed-cup test)

b)  Solid dangerous goods in bulk 

Class 4.1   Flammable solids 

Class 4.2   Substances liable to spontaneous combustion

Class 4.3   Substances which, in contact with water, emit flammable gases

Class 5.1   Oxidizing substances

Class 9   Miscellaneous dangerous substances, that is, any other substance which experience has shown, or may show, to be of such a dangerous character that the provisions of this part will apply to it.

c)  MHB Materials which, when carried in bulk, present sufficient hazards to require specific precautions