Diving and Decompression

->regardless of whether the RDP (recreational Dive
I remember as a child my mother cooking with aPlanner) deems it necessary. With regards to the
Pressure-Steamer, I was always fearful the pressurerecommended ascent rate, again I would suggest
would explode the sealed pot so I often hid awaythat slower is better - the way I suggest this is to
from the sight, what I didn't realise was the lid had aconsider your dive profile as a stepping process -
built in safety device. This is similar to diving in thatreach your pre-planned depth for the pre-planned
there is a risk of insignificant nitrogen "Off-Gassing"time and then stage your ascent to different levels
during our ascents.i.e. 26 metres Max Depth for 12 minutes, the next
Diving has primarily always been aboutstage would be 18 metres for 4 minutes then 8
Decompression, from day one the concerns of curingmetres for 4 minutes then 5 metres for 4 minutes -
or to be more truthful preventing Decompressionyour ascent rate to each different level of the dive
sickness has always been the leader in Dive accidentwill be both slow and controlled. This example would
prevention. Although dive Tables and Computergive you an ascent time from 18 metres of 12
Models are based on theoretical dive data, there isminutes as opposed to the recommended rate of 1
still some element of risk and the only way tominute. This gives us plenty of time for the nitrogen
prevent Decompression Sickness is to not dive at all.in your body to "Off-Gas".
However there are also Lions in the Jungle, all we canAs a responsible diver also ensure you are aware of
do as educated and safe divers is to ensure thesethe emergency action plan and have details of the
risks are at kept to their minimum.nearest Hyperbaric Chamber, have contact details for
Avoiding Decompression sickness is to stay hydrated,rescue contacts etc. do not rely on others having this
drink plenty of fluids avoiding alcohol both before andinformation they may be thinking the same about
after diving, and using re-hydration salts especiallyyou remember.
when diving in hotter climates. Avoid strenuousThink Moving not Stationary
exercise during and after a dive, dive well withinA safety stop, although defined as 5 metres for 3
recommended limits and ensure both Actual Bottomminutes, can and should be extended where possible
Time and ascent rates are adhered to. Theconsider a 5 metre stop for 8 minutes, you do not
recommended rate is 18 metres in 60 seconds, withhave to be stationary! Keep moving to your planned
a 5 metre safety stop where applicable. Personally Iexit point enjoying the wonderful sights at this level
would recommend a safety stop after ALL divesand your dive will be both more enjoyable and safer.