Emergency Engine Shutdown - MTU MS15027/02E Operating Instuctions

3.9 Emergency engine shutdown

WARNING
Escaping residual gas may create an explosive atmosphere in case of emergency stop.
Explosion hazard!
• Ensure that any escaping residual gas is routed out by means of appropriate facility ventilation
and use of an SBV (safety blow-off valve) to prevent any risk of explosive atmosphere.
• Install an SAV (safety shut-off valve) in the gas control system when using gas control systems
with inlet pressures in excess of 0.1 bar.
• Install an SAV (safety shut-off valve) and an SBV (safety blow-off valve) in the gas control system
when using single-stage gas control systems with inlet pressures in excess of 1 bar.
NOTICE
An emergency stop causes extreme stress to the engine plant.
Risk of overheating, damage to components!
• Initiate emergency stop only in emergency situations.
Emergency engine shutdown
Item
Gas shut-off solenoids
Ignition, ignition system
Throttles
Room ventilation, facility
ventilation
Table 34: Emergency engine shutdown
Action
Two contacts are provided for electrical connection. Close gas shut-off sole-
noids.
• Engine is stopped.
In the case of an external EMERGENCY STOP, the ignition remains on until
the engine has run down to a standstill in order to safely burn off uncombust-
ed fuel/air mixture.
• The ignition is only switched off in case of an overspeed violation or an
internal ignition fault.
The throttles are always closed in case of EMERGENCY STOP. Closing the
throttles impedes the scavenging of residual gas. External ventilation and in-
erting systems must therefore be activated following an emergency engine
stop.
Residual gas may escape from the fuel line in case of EMERGENCY STOP.
• A contact is provided to request room and facility ventilation.
MS15027/02E 2015-04 | Operation | 45