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ClassNK grants AIP on LPG reformer for marine engines

25 Sep 2019

Classification Society ClassNK on Tuesday (24 September) said it has granted an Approval in Principle (AIP) to Osaka Gas for their joint project with Daihatsu Diesel on a Liquefied petroleum gas (LPG) Reformer for marine engines – the first AIP granted in Japan for such equipment.

The LPG Reformer is designed to convert LPG into synthetic methane gas equivalent to the kind found in liquefied natural gas (LNG), according to ClassNK.

Due to being mainly composed of propane and butane, LPG is susceptible to knocking (abnormal combustion), making it difficult to use as a fuel for lean burn gas engines and dual fuel engines.

In contrast, by converting LPG into synthetic methane gas with the LPG Reformer prior to fuelling the engine, the risks of knocking can be restrained, resulting in equivalent operational performance observed when using LNG.

“Further, when using LPG as fuel, the International Code of Safety for Ships using Gases or other Low-flashpoint Fuels (IGF code) applies,” it states.

“The current IGF code, however, does not address specific regulations for alternative fuels other than LNG.

“For this reason, ClassNK released Guidelines for Ships Using Low-Flashpoint Fuels (Methyl / Ethyl Alcohol / LPG) in June 2019 which outline safety requirements for other viable alternative fuels besides LNG.

“The recently issued AIP to Osaka Gas is also in line with these guidelines.”

Related: ClassNK releases guidelines for ships using low flashpoint fuels

Photo credit: ClassNK
Published: 25 September, 2019

 

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