Failure of proportional valve in saturation chamber control

There was a failure during saturation diving operations. There were no injuries to personnel nor damage to equipment, but time was lost.

The automatic control system for the hyperbaric chamber detected that there was a proportional valve command/feedback discrepancy and stopped pressure control of the hyperbaric chamber. The valve malfunction forced an abort of diving operations and lost time.

To view this IMCA safety alert in full, click the 'Download Alert' button above and refer to section 2 of the document.