17.6 Exclusion of air from vapour spaces
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Statutory Documents - IMO Publications and Documents - International Codes - 1983 IGC Code - International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk - Chapter 17 Special Requirements - 17.6 Exclusion of air from vapour spaces

17.6 Exclusion of air from vapour spaces

 Air should be removed from the cargo tanks and associated piping before loading and then subsequently excluded by:

  1. .1 introducing inert gas to maintain a positive pressure. Storage or production capacity of the inert gas should be sufficient to meet normal operating requirements and relief valve leakage. The oxygen content of inert gas should at no time be greater than 0.2% by volume; or

  2. .2 control of cargo temperatures such that a positive pressure is maintained at all times.

Parent topic: Chapter 17 Special Requirements
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