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10 Cards in this Set
- Front
- Back
What are the 3 types of mixed gas diving equipment?
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-Surface supplied gear (MK 21 Mod 1, EXO BR MS, KM-37)
-Semiclosed circuit and closed circuit UBAs -Saturation deep dive systems |
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What are you considerations when determining what method of mixed gas diving to use?
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-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 |
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What are normal and max working limits for surface supplied mixed gas diving?
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-Normal = 300'
-Max = 380' (w/ CNO approval) |
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On a mixed gas dive side, what minimum stations shall be manned by formally trained (NDSTC) mixed gas divers?
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-Diving Officer
-Master Diver -Diving Supervisor |
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A diver must have how many hours of sleep prior to making a mixed gas dive?
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-8 hours of sleep in the last 24 hours
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On a mixed gas dive side, what stations shall be manned by formally trained (NDSTC) surface supplied divers?
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-Diver
-Standby Diver -Rack Operator -Console Operator -Timekeeper/ Recorder |
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On a mixed gas dive side, what stations can be manned by non-divers?
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-Tender
-Standby Tender -Winch Operator |
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When is a DMO required on dive station?
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-For all exceptional exposure dives and any dives exceeding the equipment normal working limits
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What is the minimum equipment requirement of a mixed gas diver?
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-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) |
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What are some operational considerations in a mixed gas dive?
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-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 |