Operation Manual / Power2 800-M / 2 Safety
1 Safety / 1.6 Deflagration on gas engines
© Copyright 2018 ABB. All rights reserved. HZTL4025_EN Revision A March 2018
1.6 Deflagration on gas engines
Low-pressure stages from ABB Turbo Systems can tolerate a deflagration with a transient
pressure increase of 12bar (guideline value).
High-pressure stages from ABB Turbo Systems can tolerate a deflagration with a transient
pressure increase of 15bar (guideline value).
After a deflagration event ABB Turbo Systems recommends verifying the following points on
the low-pressure and high-pressure stages:
¡ Position of the turbine and compressor casings to the bearing casing
¡ Shifting of the bearing casing in relation to the bracket
¡ Cracks in casings
If during external inspection anomalies are found or if a particularly strong deflagration
event has taken place, it is also recommended to check the bearings of the low-pressure and
high-pressure stages before the next start. This inspection and evaluation must be carried
out by an ABB Turbocharging Service Station.
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