Incident Report

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Incident Report 2020-05-01T16:26:00+00:00

Jammed US Deepstar 1st Stage

Incident Date


Incident Description

Ogof Fach 1972: This cave has a very muddy silted third sump. Somehow mud worked its way into the first stage of the valve a U.S. Divers Deepstar jamming it open. The diver returned by turning his cylinder valve on and off.

Lessons Learned

Consider the make and design of demand valves used for cave diving.
Line Management Negligible
Gas Management Negligible
Equipment Management Major
Equipment Failure Major
Training Minor
Medical Negligible
Planning Negligible
Procedural Error Minor
Cave Environment Major
Weather Negligible
Other Factor Unknown