Alert 99 – 38 Pressure Trapped in Sub Sea BOP Stack DDV Solenoid Housing
WHAT HAPPENED:
While testing the subsea BOP stack, the shear acumulator did not charge on the blue pod. A faulty DDV was suspected. The top of the DDV, which houses the solenoid, was cocked. Four of the six bolts were sheared. When the last two bolts were removed to investigate, the top of the DDV blew off into the bulkhead.