Term
| Items Diver 1 Must bring to the Dive Site. |
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Definition
-Pre Dive and Post Dive Checklist
-Headliner
-Whip
-Nose Block
-Blame Tag |
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Term
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Definition
Gorski
Band Mask
SL 37 or (Sl 27) |
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Term
| What goes in the "Number" section of the checklist? |
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Definition
| The Mask Number / Regulator number if it is different. |
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Term
| Pre Dive-Visual Inspection: |
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Definition
-General Condition
-Grab Neck Dam or Hood
-Inspect Neck Dam o-ring, lube if necessary
-Inspect Bent Tube Assembly
-Ensure flow restrictor is installed in sideblock accessory port
-Inspect face late, clean with mild soap.
-Check communications wire connections, test communication with radio
-Ensure oral nasal and the mushroom valve is in the proper position.
-Install hood liner / band mask hood
-inspect pull pins/latch smooth for operation.
-Check face plate port/port retainer screws (use only thumbnail) report to supervisor. |
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Term
| Why do we inspect the bent tube assembly? |
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Definition
| It is the main tube that provides air to the regulator. We are looking for dents that will interfere with needed air flow. |
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Term
| Why do we ensure that the flow restrictor is installed? |
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Definition
| The flow restrictor stops air from leaking all pressure to the inflator whip. This ensures that in the case of a catastrophic failure (such as a slice in the line) adequate air and pressure will proceed to the bent tube assembly and to the diver. |
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Term
| How does the flow restrictor work? |
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Definition
| It is made of brass and stainless steel,and takes the standard opening and downsizes it to a small hole. |
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Term
| What are we checking when we check comms? |
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Definition
We are checking for:
- Communication from Diver to Topside
- Communication from Topside to Diver, in BOTH ear speakers. |
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Term
| What way is the mushroom valve placed in the oral nasal? and why? |
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Definition
| The mushroom is on the inside of the oral nasal. This is so that air leaving the mouth does not go into the helmet but instead exits. It is also positioned so that air from the bleed valve also can leave from the helmet to the oral nasal and be discarded or taken in by the diver. |
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Term
| Why do the pull pins produce a smooth latching operation? |
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Definition
| Inside the pins are oiled and sealed independently from the outside. If oil or dirt is stuck to the pins, we know that the pull pins structural integrity has been compromised and must be repaired. |
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Term
| Pre Dive-Check all Moving Parts: |
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Definition
-Rotate regulator adjustment knob fully in and out (leave centured)
-Rotate free flow valve fully in and out (leave closed)
-Rotate emergency gas supply valve fully in and out (leave closed)
-Check nose block clearing device for free movement |
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Term
| Non Return valve function check: |
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Definition
pressurize through emergency gas supply valve, ensure no gas flow through non return valve occurs.
Another way to check is when your diver does a bailout test. If the pressure gauge were to go up when the diver is on bailout, you know that the one way check valve is not working. |
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Term
| What are the 5 things that go in a helmet: |
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Definition
-Your Head (god willing)
-You Head liner
-Nose Block
-Vircon
-Some specific named oil/lubrication which goes on the neck dam. |
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Term
| What should not go in the helmet / even be on the table where you are working. |
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Definition
| ANY OIL! Anything aeresol is a nono. |
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Term
| Post Dive-Visual Inspection: |
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Definition
-General Condition
-Grab Neck Dam or Hood
-Inspect Neck Dam o-ring, lube if necessary
-Inspect Bent Tube Assembly
-Ensure flow restrictor is installed in sideblock accessory port. (DO NOT LET THE LAST DIVER LEAVE WITH IT!)
-Inspect face late, clean with mild soap.
-Check communications wire connections, test communication with radio
-Ensure oral nasal and the mushroom valve is in the proper position.
-inspect pull pins/latch smooth for operation.
-Check face plate port/port retainer screws (use only thumbnail) report to supervisor. |
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Term
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Definition
-Rotate regulator adjustment knob our three turns.
-Rotate free flow valve fully out (leave open)
-Rotate emergency gas supply valve fully out (leave open) |
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Term
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Definition
| Thoroughly rinse exterior of the helmet/mask as well as neck dam or hood. (avoid getting water on the inside.) |
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Term
| What can be used on a hard to install neck dam? |
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Definition
| Dow Corning 111 / Soap if last resort. |
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