Incident Report

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

O-ring Failure

Incident Date

1906-06-05

Incident Description

1965 - A diver in this cave which has short restricted sumps twice knocked his first stage valve partially off his pillar valve causing O-ring failure. He was able to get out quickly. Personal communication has revealed at least three other cases of O-ring failure on the A-clamp adaptor during the 1970s.

Lessons Learned

Since the 1980s the use of DIN fit valves is common place to avoid this issue - Ed.
Factors
Line Management Negligible
Gas Management Negligible
Equipment Management Major
Equipment Failure Major
Training Minor
Medical Negligible
Planning Negligible
Procedural Error Minor
Cave Environment Negligible
Weather Negligible
Other Factor Unknown