SDI- OPEN WATER LATEST UPDATE

SDI- OPEN WATER LATEST UPDATE CH 2 : What is the most important rule in scuba diving? - never hold your breath CH 4 : Describe from start to finish the steps to disassembling your scuba system - - remove accessories and weights - decompress the system : turn the valve knob completely clockwise, decompress the second gauges (purge button or auto inflator button to vent air remaining in the hoses) - detach the LP hose from the inflator assembly by pulling the collar back on the quick disconnect , unscrew the yoke knob until the first stage can slip off the top of the valve - undo the straps and remove the BCD from the cylinder - rinse off gear and fill and dump BCD CH 5 : Describe what to do if you exceed the no-deco time registered on your computer - - ascend to the surface before you run out of air - when surfaced , establish positive buoyancy and signal for emergency assistance - advise the dive supervisor of your omitted decompression and begin first aid procedures for decompression sickness - breathe oxygen for at least 30 mins and watch for signs and symptoms of decompression sickness for at least 24 hours - seek immediate medical attention if any symptoms develop - do not dive or fly or go to higher elevations for at least 24 hours CH 5 : What elements should you and your buddy agree on before the dive? - - dive time - maximum depth - minimum cylinder pressure - emergency procedures CH 5 : Define risk management - - a means of preventing problems and planning a response to any emergency that arises - involves planning ahead , employing good diving practices and knowing what to do before an emergency CH 5 : Why should you avoid consuming drugs or alcohol prior to a dive? - it greatly increases the risk of decompression sickness in divers CH 5 : What is the emergency procedure for suspected decompression sickness? - 1: move the afflicted diver out of danger 2: activate the Emergency Medial System (EMS) 3: monitor life support signs (pulse and respiration) and provide CPR if necessary 4: provide 100% oxygen via demand regulator if the diver is breathing 5: evacuation if necessary CH 5 : What should you do if you become entangled underwater? - - relax, do not struggle to free yourself , moving around results in further entanglement - figure out how to untangle carefully or carefully use knife to cut the line away, cut away from body and gear CH 5 : Describe the procedure recommended for a safety stop - - Should be conducted between 3 and 6 meters (10 and 20 feet) for three to five minutes before coming up to the surface - a safety stop is recommended on any dive up to 30 meters (100 feet) - for dives over 30 meters (100 feet), a saftey stop is mandatory