Mild hydro cracker unit fractionator furnace pass flow Flow transmitter impulse tubes are cracked due to Header vibrations. We faced this kind of problem in case of unit is upset due to recycle gas compressor failure. what are the possible chances to get multiple phases in this header.
Back ground: Product stripper outlet ....>G-0006...> Exchanger E0004 (Shell side - Pump out let liquid, tube side Reactor effluent) ......> Exchanger E0025 (Shell side- E0004 O/L, Tube side fractionator O/L)
This incident was happened after start up of pump G-0006.
Any one experienced this kind of problem?