This International Standard specifies the measures to be taken to reduce fires originating from machinery-space flammable oil systems and to prevent leakage of flammable oil. It is intended for designers, shipyard personnel, engine-room personnel, owners, operators and maintenance personnel. Requirements contained herein address the design, construction, testing, installation, maintenance and inspection of systems containing flammable oil. This International Standard is applicable to new and existing vessels, and is intended to be used as a supplement to the regulations for fuel oil, lubricating oil and other flammable oils contained in the International Convention for the Safety of Life At Sea (SOLAS 74), as amended, issued by the International Maritime Organization (IMO).