What I spent my week doing (with pictures):

Surviving Survival Training

The oddest thing is that the simulator has given me an incredible toothache that I have now had for over 24 hours. It rotates between my upper and lower jaw. Very strange, but I think it was triggered by the pressure under water.

I think that you were underpaid last week.

Best Hopes that this was a waste of time,

Alan

Thanks for your and everyone elses input re:switching to NG and getting solar. Turns out my utility pays a (0.04) premium for green energy. Still not sure it's worth the investment yet, turns out you need a battery system for the panels to power the house during an outage (say, a hurricane), even if the sun is shining. Still thinking..

Going to switch to instant gas water heater and use hot water heater enclosure as closet, and add utility paid insulation.

Have you looked into improved windows ?

Also attic circulation, a ridge vent and soffits are the best solution.

Best Hopes,

Alan

simulator has given me an incredible toothache..

It's the difference between the simulator and a real accident. If you were alive 24 hours after a real helicopter crash in the North Sea, you wouldn't notice the toothache. :)

Not that odd. It's not uncommon for sinus trouble to present as a toothache.

Makes me think how cheap oil really is. Prepare for the worst hope for the best.

This sort of thing sometimes happens in scuba diving - essentially nitrogen bubbles in the teeth - sort of a mini-bends, I guess.

You probably weren't deep enough for long enough for this to be the explanation.

Pressure differential in your maxillary sinus on one side. See your dentist or physician for relief. Yes, very painful, indeed!

Can try vasoconstricting nose spray, e.g. Afrin or Neosynephrin. May work faster than finding a dentist or physician on a weekend!

My sincerest thanks for this advice, as well as to others who suggested it might be a sinus problem. The pain had gotten really intense, and I remembered that I did have some nose spray upstairs. Two squirts up the side with the pain, and the piercing pain went away almost instantly. It is still a little sore, but before the nose spray it felt like I was undergoing a root canal with no anesthetic.

You're more than welcome. Glad you tried it. Often the simplest solution is the best.

very interesting, will link on latoc on monday.

Just curious, what mixture were you breathing through the rebreather?

With a rebreather, you are rebreathing your own air. It is meant to be a temporary thing; not to last more than a couple of minutes at the most as you exit. Think of it as filling a plastic bag with air and placing it over your head. You could breath for a little while, which is supposed to buy you some time.

I thought rebreathers also added oxygen from a small tank as well as recycling some of the breathed out air...? Must be different types, I guess.

There are different types. For these, you take a deep breath, open a valve, and then breathe in and out of the bag through your mouthpiece. They do make them with supplemental air, but the advantage of the kind I used is that it is very compact.