I have had the good fortune to receive excellent technical training at various levels from four different well known technical instructors. One of the things that I noticed is that there seems to be differences in the preparation phase of a gas switch.
I am not talking about the actual gas switch, but the preparatory actions. These include identifying the correct bottle, tracing the hose, cracking and closing the valve, purging the reg and observing the pressure gauge, opening the valve, positioning the hose, repurging the valve, and the checking others. Obviously you will check your depth at the switch stop to confirm the safe depth regardless of when you do the preparatory steps.
So the question is, assuming no current or a drift deco, at what point do you do these preparatory steps prior to the actual switch at the correct depth. Seems like there are advantages and disadvantages to each way.
I am not talking about the actual gas switch, but the preparatory actions. These include identifying the correct bottle, tracing the hose, cracking and closing the valve, purging the reg and observing the pressure gauge, opening the valve, positioning the hose, repurging the valve, and the checking others. Obviously you will check your depth at the switch stop to confirm the safe depth regardless of when you do the preparatory steps.
So the question is, assuming no current or a drift deco, at what point do you do these preparatory steps prior to the actual switch at the correct depth. Seems like there are advantages and disadvantages to each way.
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