Safety Flash
Near-miss: Incorrect length retaining screws fitted on divers helmet
Near-miss: Incorrect length retaining screws fitted on divers helmet
- IMCA
- Safety Flash
- IMCA SF 14/14
- Competence and TrainingDivingMachinery and Equipment
- Mechanical failure
- Inspection and maintenance
- Breathing apparatusValve
- Competence and trainingPositive retention and reliable securing
Summary
Maintenance of an Ultrajewel 601 diver’s helmet revealed shortened retaining screws with inadequate thread engagement in the exhaust valve cover assembly. Three of four screws had been modified, creating potential for cover separation during use. Lessons emphasise manufacturer-supplied parts, controlled spare-parts storage and competent maintenance personnel.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Breathing apparatus; SCBA; self-contained breathing apparatus.
Classifications: Valve; valves.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Positive retention and reliable securing.
Summary
Incorrectly shortened screws on a diving helmet could have allowed the exhaust valve cover to separate during use.
IMCA SF 14/14. Themes: competence and training, diving, machinery and equipment.