Hand injury in medical airlock
- Safety Flash
- Published on 24 May 2023
- Generated on 26 August 2025
- IMCA SF 13/23
- 1 minute read
A Life Support Technician (LST) suffered a finger injury whilst operating the medical airlock (“Med-lock”) on a dive chamber.
What happened?
The LST was closing the Med-lock door but was unable to rotate the door to the fully closed position, indicating that the hatch needed to rotate further clockwise.
The LST attempted to rotate the hatch counterclockwise in order to be able to open the door and inspect it.
The Med-lock was stiff to rotate. For leverage to assist with rotating the Med-lock, the LST placed his hand on the flat bars that brace the operating wheel.
The hatch moved suddenly and because his hands were on the brace and not on the wheel itself, his hand got pinched between the brace and the Med-lock door hinge plate, causing an injury.
What went wrong?
The hatch was stiff, and the LST had his fingers in the wrong place at the wrong time.
Actions
- Maintain proper lubrication on the door. Added Med-lock maintenance to planned maintenance programme.
- Added warning signage to the Med-Lock, for appropriate hand placement, along with clear instructions.
- Updated the vessel familiarisation to include Med-lock operations and demonstrate operations.
Related safety flashes
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IMCA SF 06/19
5 April 2019
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IMCA SF 04/16
5 February 2016
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