2022年11月26日 · The inert gas system is designed and operated to render and maintain a non-flammable atmosphere in the cargo tank at all times until required to be gas free. The system is capable of delivering Inert Gas (IG) at 125% of the maximum rate of discharge. The system is capable of delivering IG with oxygen content not more than 5% by volume.

2023年3月3日 · 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 the tanks at all times.

2024年10月29日 · The inert gas system or IG system distributes inert gas to the tanks that are over-rich with hydrocarbon gases to increase the lower explosion limit (the lower concentration where the vapors can be ignited), as well as decrease the higher explosion limit (the higher concentration where the vapor will explode).

2023年9月17日 · On the front of the panel the system is represented in the form of a mimic diagram, with appropriate indications and pushbuttons. The panel also contains an indicator unit for IG main pressure on the deck lines and the IG O2% content. A sub-panel on the bridge contains indication for inert gas pressure, oxygen content and alarm indicators. Starting

2016年8月12日 · Inert gas means a gas or a mixture of gases, such as flue gas, containing insufficient oxygen to support the combustion of hydrocarbons. The oxygen content of the Inert Gas supplied to cargo tanks should be 5% or less. However, it is to be noted that too less content of oxygen in the IG would […]

Inert gas system spreads the inert gas over the oil cargo which increases the lower explosion limit LEL (lower concentration at which the vapors can be ignited), simultaneously decreasing the Higher explosion limit HEL (Higher concentration at which vapor explodes).

• • • • • 一 惰性气体的功用 油舱内可燃气体发生爆炸事故，必须具备3个条件： (1)可燃石油气浓度在“爆炸范围”内； (2)有足够量的氧气，舱内氧气含量在“临界点以上”； (3)有引火源，其能量达到可燃气燃烧所需最低点火能 量 • 因此，从3方面采取措施防止油舱发生燃烧爆炸事故： • (1)控制油舱内可燃石油气浓度。 从图8-1可知，如能控 制可燃气浓度处于爆炸上限以上的“过浓区”，或者处 于爆炸下限以下的“稀释区”，就不会产生燃烧爆炸。 实际上，要控制油舱内可燃气浓度，始终处 …

Inert gas systems supplied by one or more oil-fired inert gas generators may be accepted. An Administration may accept systems using inert gas from other sources provided that an equivalent standard of safety is achieved.

The paper outlines the Guidelines developed by the International Maritime Organization (IMO) to improve the safety and performance of inert gas systems on ships, as mandated by amendments to the SOLAS Convention.

Comprehensive guidelines containing details of the design and operation of inert gas systems together with legislative requirements. This document summarises the activities and conclusions of the inter-industry working group formed to investigate fires and explosions on chemical and product tankers.