Mack LEU, Operator'S Handbook Manual

Page: 17 / 59

Safety Information 13
Flammability
Since LNG is extremely flammable, the tank(s) should be grounded when fueling, to
avoid creating sparks from static electricity. Keep any source of ignition, such as a lit
cigarette, far away from LNG/CNG tanks and fueling areas.
WARNING
KEEP AWAY FROM FLAME OR
SPARK.
Natural gas is flammable. Smoking,
open flames, and general purpose
electrical equipment shall be prohibited
where natural gas is stored or handled.
Pressure
The LNG/CNG fuel systems are pressurized systems. Therefore, automatic and
manual safety vents, relief valves and shutoff points are installed throughout the
system to prevent excess pressure from building.
WARNING
REMOVE PRESSURE. Always empty
the LNG/CNG fuel tank(s) and remove
any pressure on the system prior to
removing parts or components of the
tank for repair.
Releases or Spills
During a release or spill, shut off and eliminate all ignition sources. If desired, stop
the source of the release or spill. Keep people away. Minimize breathing vapors.
Absolutely avoid skin contact. Ventilate confined spaces. No disposal method is
necessary, nor should it be attempted, because extremely rapid evaporation of the
natural gas will take place. If a spill is in danger of igniting, use a water spray (do not
use solid streams of water) to direct gas-air mixtures away from ignition sources
If a spill has ignited, use water to keep fire-exposed containers and equipment cool
and to protect personnel who may have to stop the source of the leak. If it is desirable
to extinguish the fire, use dry chemical, carbon dioxide or halogenated extinguishing
agents.