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10 Cards in this Set

  • Front
  • Back
What are the 3 types of mixed gas diving equipment?
-Surface supplied gear (MK 21 Mod 1, EXO BR MS, KM-37)
-Semiclosed circuit and closed circuit UBAs
-Saturation deep dive systems
What are you considerations when determining what method of mixed gas diving to use?
-Depth and planned duration of dive
-Equipment availability
-Quantities of gas mixtures available
-Qualifications and number of personnel
-Type of work and degree of mobility
-Environmental considerations such as temp, vis, bottom type, current, and pollution levels
-Communication requirements
-Need for special operations procedures
What are normal and max working limits for surface supplied mixed gas diving?
-Normal = 300'
-Max = 380' (w/ CNO approval)
On a mixed gas dive side, what minimum stations shall be manned by formally trained (NDSTC) mixed gas divers?
-Diving Officer
-Master Diver
-Diving Supervisor
A diver must have how many hours of sleep prior to making a mixed gas dive?
-8 hours of sleep in the last 24 hours
On a mixed gas dive side, what stations shall be manned by formally trained (NDSTC) surface supplied divers?
-Diver
-Standby Diver
-Rack Operator
-Console Operator
-Timekeeper/ Recorder
On a mixed gas dive side, what stations can be manned by non-divers?
-Tender
-Standby Tender
-Winch Operator
When is a DMO required on dive station?
-For all exceptional exposure dives and any dives exceeding the equipment normal working limits
What is the minimum equipment requirement of a mixed gas diver?
-MK 21 Mod 1, KM-37, or EXO BR MS FFM with tethered umbilical
-Thermal protection garment
-Weight belt
-Dive knife
-Swim fins or shoes/booties
-EGS bottle w/ submersible tank pressure gauge
-Integrated diver's vest (IDV)
What are some operational considerations in a mixed gas dive?
-Adequate mixed gas supply
-MDV required on station
-DMO required on station for all exceptional exposure dives and dives exceeding equipment normal working limits
-Recompression chamber required on station
-Planned exceptional exposure dives or dives exceeding normal working limits require CNO approval
-Breathing gas heater
-Hot water suit