Page 58 - Offshore Electrical Engineering Manual

Emergency Generation 45

h. All oil and diesel lines to be made of hydrocarbon-resistant material (rein-
forced hose or piping).
i. Diesel tanks that are located such that the diesel is gravity-fed to the engine

to be fitted with a manual shut-off valve.

j. Air intakes to be fitted with gas detection, which is part of the installation’s
central monitoring system.

k. Diesel engines to have an emergency stop on the outside of the container.
l. Machinery designed for unmanned operation to be equipped with monitor-

ing facilities in the installation manned control room.
m. A permanent fire extinguishing system with automatic release to be installed

in addition to a manual release located on the outside.
n. Be provided with protective earthing.

o. Be provided with equipotential bonding facilities.

p. Intrinsically safe (IS) instrumentation and telecommunications in the con-

tainer will require an external separate reference earth.
5. The above-mentioned list is not exhaustive and will vary because of national
standards, the installation’s safety case, the location on the installation and the
geographic location.
6. If for some reason (e.g., located in open air) the diesel engine requires to be
approved for Zone 2 operation, then it will be necessary to comply with BS-EN
1834.

Because of the safety criticality of the emergency generator, a robust well-proven
design should be utilised and rigorous factory inspection and test procedures must be
applied during manufacture.