The CIMAC HFO Working Group fuel recommendationissued by the CIMAC HFO WG in 1982 was used as a guide for both the BI (BS-MA100) and the ISO 8217 standards, both of which were introduced after the firstCIMAC recommendation. Today, the ISO and CIMAC fuel groups work closelytogether to ensure consistency in the standards and recommendations introducedto the market and to unite the workforce. CIMAC have the advantage of being ableto mobilise recommendation at a short notice which gives high flexibility. Especially today this is easy when the latest paperssuch as “Recommendations regarding Fuel quality for Diesel Engines” areavailable on the internet and can be updated whenever needed to adapt anychanges in the market as for example new emission rules. The WG consists of a large variety of specialists onthe market from the oil companies, engine builders, shipowners, classificationsocieties, fuel cleaning equipment and research institutions coming from 14countries in total. Latestedition of the Recommendations regarding FuelRequirements for Diesel Engines – Paper No. 21 (Available on the website) Thisedition of the Fuel Requirements introduces several important changes. Some ofthem are: Thisnew edition of the Recommendations regarding Fuel Requirements for Heavy Fuelsfor Diesel Engines is available on the CIMAC homepage (www.cimac.com). TheWG is working on New edition of the Recommendations on theDesign of Heavy Fuel Treatment Plants TheRecommendations regarding the Design of Heavy Fuel Oil Treatment Plants forDiesel Engines is also going through some large-scale changes, and the mainchanges are listed below: To be introduced as a paperon the website at the beginning of 2005.