Why a slingshot valve came to mind? 
What to do if . . .
- Thread starter serambin
- Start date
Please register or login
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
- Ability to post and comment on topics and discussions.
- A Free photo gallery to share your dive photos with the world.
- You can make this box go away
Matsya
Contributor
I think that should be "exceed your maximum for 5 MINUTES or more" not 8 minutes.
I have read that DCS should not be treated by going back underwater. I presume the same would apply if you miss an emergency decompression stop. The PADI book recommends a 15 minute stop at 5 metres/15 feet if you exceed a NDL by more than 15 minutes and upon surfacing ,the book says, you MUST REMAIN OUT OF WATER at least 24 hours before diving again.
I think when it says "remain out of water upon surfacing" the implication is that one should not re-enter.
The only alternative is to remain out of water and monitor yourself for DCS.
I have read that DCS should not be treated by going back underwater. I presume the same would apply if you miss an emergency decompression stop. The PADI book recommends a 15 minute stop at 5 metres/15 feet if you exceed a NDL by more than 15 minutes and upon surfacing ,the book says, you MUST REMAIN OUT OF WATER at least 24 hours before diving again.
I think when it says "remain out of water upon surfacing" the implication is that one should not re-enter.
The only alternative is to remain out of water and monitor yourself for DCS.
Don Burke
Contributor
That would be great if there was one.Doc Harry:
The original problem did not have a hang tank, sling bottle, or ready rigged cylinder on the boat.
If we can redefine the problem, my suggestion would be to have the topside personnel switch the surface supplied rig to an alternate air source and complete the extended safety/ emergency decompression stop.
Since this is apparently an open circuit SCUBA dive, we can not do that either. Having said that, if this situation is an actual concern, a hang tank would be a good thing to stage at the beginning of the dive. My suggestion would be EAN 36 in a steel cylinder at twenty feet.
ramsabi:
ramsabi, I think we've all agreed that this is beyond PADI. And this is assuming there is no signs of DCS upon surfacing.
TheRedHead:
It is not easy to find, but PADI actually does have a policy for this. I am having trouble finding it in the materials available to the general public (maybe someone else can find it), but I found this on page 130 of my old Divemaster book:
"If a diver surfaces and discovers an emergency decompression stop was required and mistakenly omitted, the diver should not reenter the water for at least 24 hours. The diver should rest and remain alert for signs and symptoms of DCS. Breathing pure oxygen may reduce the possibility of DCS, and doing so is the primary first aid step should signs and symptoms occur."
This is not exactly the scenario being discussed, but the principle is the same.
Similar threads
