SOLAS regulation II-2/15.2.9 requires
all external high pressure fuel delivery lines between the high pressure
fuel pumps and fuel injectors to be protected with a jacketed piping
system capable of containing fuel from a high pressure line failure.
A jacketed pipe incorporates an outer pipe into which the high pressure
fuel pipe is placed forming a permanent assembly. The jacketed piping
system is to include a means for collection of leakages and arrangements
are to be provided for an alarm to be given of a fuel line failure. Regulation II-2/15.2.11 will require
existing ships to retrofit engines having an output greater than 375
kW.