4. carbon dioxide buildup 5. oxygen sensor failure 6. deep tissue isobaric counterdiffusion (ICD) 7. high pressure nervous syndrome (HPNS) 8. exhausting your carbon dioxide scrubber 9. carbon dioxide channeling from a poorly packed scrubber 10. carbon buildup causing an spark leading to an oxygen fire. underwater. 11. flooding of breathing loop or circuitry 12. water mixing with the scrubbing agent to produce a toxic caustic soda that will give you chemical burns on your mouth, airway, and lungs 13. plain old decompression sickness 9 — ChaosConf 2018 @rondoftw
a rebreather malfunction ▸ which you might have caught if you didn't skip your pre-dive check ▸ your backup tank had a leak and is running low because of a faulty o-ring ▸ your buddy is far away and distracted by something else ▸ the dive light doesn't get their attention because the beam has less contrast in the day ▸ you accidentally kick up some silt and the visibility drops ▸ your air consumption goes up and then you breathe through the last of the air in your tank ▸ so you swim for the surface even though you have a decompression obligation 13 — ChaosConf 2018 @rondoftw