SDI Open Water Review Questions and Correct Answers

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