Non-Standard DLSS Flashcards
What is the maximum and standard depth for Mk. 21?
190 for both maximum and standard depth.
What is the standard depth for scuba? Max depth?
Standard 130, Max 190
What is the max and standard depth for Mk. 20?
60 for both max and standard depth.
When do gauges need to be calibrated?
Every two years, or if suspect for critical gauges.
What is the over bottom pressure for SCUBA?
Set to manufacturers suggested pressure, but no lower than 135.
When do you need an EGS?
When diving deeper than 60fsw, inside a space or on a wreck, or diving a planned decompression dive.
When can standby be deployed as a working diver?
No D dive, surface supplied, shallower than 60fsw, same worksite/same job, non-salvage dive, and area must be deemed clear and safe for standby.
What is the relief for a SCUBA First Stage set to?
180 +/- 5
What is the minimum equipment required to dive SCUBA?
Wrist watch, depth gauge, pressure gauge or reserve valve, mask, fins, dive knife, AMU approved cylinders charged with enough air to support dive, BC/life preserver, and weight as nessiscary.
What is the reserve pressure for a single 80? Double 80’s?
500psi for both, but read on double 80’s as 250 psi on pressure gauge.
What is the most important rule in SCUBA?
Always stay with your buddy; if visibility is poor, use a buddy line.
What are the components of an EGS?
AMU approved cylinder charged with enough air to reach 1st decompression stop or surface for no D dives, 1st stage regulator set to manufacturers set pressure no lower than 135, pressure guage, and an intermediate whip or second stage regulator. If EGS is left topside, EGS pressure is set to 150 over bottom pressure. Whip length for top side EGS is 50-150 feet.
What are the rules for correcting variations in rate of ascent?
If delay less than one minute, disregard. If more than a minute and deeper than 50FSW, add to bottom time and adjust table/schedule. If more than a minute and shallower than 50FSW, add delay to next decompression stop. If table and schedule adjustment causes you to have passed a decompression stop, add deeper decompression time to next stop. If ascent rate is exceeded, stop and wait for watches to catch up.
