2 ICARDate & Time Incident Started: 4/11/05 12:10:00 PMIncident Description: During inspection of K-2308 H2 make up compressor it was discovered that a bolt resting on the 4th stage suction piping had worn a hole in the pipe and caused the release of make up hydrogen. The compressor was taken off line the depressured.
3 1/4” stainless steel screw and nut 1/4” stainless steel screw and nut. Designed for strength and corrosion resistance
4 Side view of schedule 160 pipe. Designed to withstand high pressure
5 The screw and nut mounted a temp gauge to a stainless steel plate.
6 The gauge was mounted at this height. Higher than this photo depicts. Back of plate was not obvious from the walk way. So, it was not visible to operators making their roundsThe gauge was mounted at this height. Higher than this photo depicts.Gauge
7 The screw and nut were touching the pipe at this height GaugeThe screw and nut
8 It appears that the inner wall of the sch It appears that the inner wall of the sch. 160 pipe may have just been penetrated and began leaking Hydrogen because of the rubbing action of the screw and nut