13. MAJOR ACCIDENTS CAUSED BY DEASSEMBLING, BAD PRESSURE SENSOR
Pressure sensor
failure
Restart of
refrigeration
system
Diverging of
NH3
pressurized
circuit
regulating
system
Activation of
safety valve on
NH3 circuit
RELEASE OF
200 kg of NH3
300 evacuated
24 hospitalized
4 injured
14.
15. METALLURGY – malfunctioning OF SENSOR
June 8, 2007
Oversight of
closing valve of
cooling system
Malfunctioned
P sensor
Perforation of
furnace cooling
system
Flow of water
in furnace
Water &
molten metal
contact
EXPLOSION
2 killed
2 M€ of property damages and
operating losses