Alert 00 – 39 Near Miss – Frozen Air Regulator


Recently a rig operating in a cold environment had a situation occur that involved the rig’s emergency breathing air system. While masked up due to high levels of H2S on the rig floor and in the tailpipe (250 ppm on rig floor/1580 ppm in the tailpipe), the air supply cascade system failed, leaving personnel without an air supply to their work masks. Personnel immediately converted to five-minute escape units and evacuated the rig. No injuries resulted.

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