Services
Mixed Gas Diving
Where air is used as the breathing medium, the maximum depth limit is set at 50m. This depth is recognised by both local regulatory agencies and international bodies as the maximum safe depth due to the narcotic effect of nitrogen.
GDS is currently the only on-shore diving contractor in the state able to offer mixed gas diving services to a maximum depth of 80m using surface orientated diving methods.
This system is particularly suited to short duration tasks or inspection where the water depth is greater than 50m and the bottom time is not likely to be extensive, for example, recovery of an object or the inspection of an inlet tower where more than just video image is required. There are a number of physiological impediments to surface orientated mixed gas diving such as speech distortion and the thermally conductive nature of helium, which causes the diver to loose core body temperature GDS has the equipment to safely overcome these problems including hot water units that actively heat the diver and speech synthesising communications systems.
Our mixed gas diving supply system is capable of handling 3 different gas mixtures with 100% redundancy adding both safety and efficiency to the overall operation.
To date we have carried out a number of deep mixed gas dives for organizations such as State Water, Department of Commerce, Transportation Safety Bureau and Sydney Catchment Authority along with the NSW state coroner and all have been with the approval of Workcover Authority.
