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Inert Gas System

The inert gas system (IGS) consists of a main inert gas plant, using boiler flue gas to provide a gas explosion protection system, i.e. a low O2 content in the cargo oil tanks and slop tanks. This is achieved by maintaining a slight overpressure in


Combined pressure/vacuum valves are fitted to each cargo tank. These valves are designed to relieve positive or negative pressure in the tanks. Combined PV valves are fitted to each cargo oil and slop tank based on the vapor emission control system in accordance with USCG


Inert gas system The salient features of the inert gas regulations are listed below Note:  Nitrogen generators are now used on Chemical tankers due to the nature of Nitrogen (No soot or water carry over). The system consists of the following components Boiler uptake valves

tanker definitions

Tanker Definitions

The International safety guide for oil Tankers and Terminals (ISGOTT) provides definitions of tanker terminology in common usage. Some important definitions are given below. These are for the information of non–tanker students. Students on tankers should use the latest edition of the ISGOTT. Students sailing

Inert gas system

Inert gas System

What is Inert Gas ? It is a gas which contains insufficient Oxygen to support combustion. Keeping tanks inerted means cutting one side of the fire triangle and hence avoiding any chances or Fire or Explosion.  Why do we need Inert Gas ? An Oil