bad pressure sensors
DESCRIPTION
Nimra Sahoo, student at University of engineering & technology lahoreTRANSCRIPT
Did this woman die because
doctors could not diagnose her
BAD PRESSURE SENSOR IS DEATH WARRANT
PRESENTER
NIMRA SAHOO2010-CH-41
YES THEY ARE IMPORTANT
The are found everywhere
BUT BEAUTY & BEAST COME TOGETHER
SAME SENSORS CAN BECOME WORSE FOR
YOU
Selecting the wrong pressure sensor
Installing pressure sensors incorrectly
Quitting too soon
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
METALLURGY – malfunctioning OF SENSORJune 8, 2007
Oversight of closing valve of cooling system
Malfunctioned P sensor
Perforation of furnace cooling
system
Flow of water in furnaceWater &
molten metal contact
EXPLOSION
2 killed
2 M€ of property damages and operating losses
afterbefore
FURNACE EXPODED
PIPE EXPLOSION
accidents involving PRESSURE sensors
regularly calibrate pressure sensors
Regular inspection & cleaning
TILL ITS TOO LATE