| I wore nomex flight suit and gloves for over 35 years Single layer Always wore cotton underwear and socks Never was in a fire But I have reached into a burning helicopter during the war to rescue a crew member Never felt a thing Adrenaline will do that! Clyde Romero
If you have no enemies You have no character !
Scars are tattoos with better stories! ![]() When you're out of F-4's you're out of fighters!
On Apr 18, 2022, at 2:04 PM, scott saidel <scott_saidel [at] hotmail.com> wrote:
Hans:
There was a funny exchange a week or so back, when Hammy was making jokes about his “unseen” piercings - but I don’t really know or want to know. Angela Cullen probably has details.
You are 100% - should have specified that the issue is metals that react to magnets - steel would be bad, gold, aluminum, titanium, etc. not so much. Some old ortho stuff is steel as are some parts of old pacemakers and aneurysm clips. Not the
kind of things you want being pulled around the body or getting hot.
I am not pierced or tattooed ( is my GenX showing? ) so, not an issue for me, but that did seem to be what FIA was getting at. Last thing you want in an emergency is to have to strip down the patient to look for and remove any metal you find
- that may or may not be magnetic. If they are rushing you into an MRI machine, then you are likely to have the kind of injuries where time is not your friend - sends can count.
As far as underwear, I get why it could be a safety issue to have an extra layer of nomex - not to mention a slight weight difference - but pretty sure that the suits are three layer, with an additional layer from the long johns underneath. Gloves
are single layer, I think (probably why Grosjean burned his hands and wrists, but his body was unscathed). Worse, if you went with any kind of poly blend, underwear it could melt onto your skin. Three layer should give you about ten minutes at 500 degrees.
That is the temperature of burning wood or paper - the fire from burning fuel, metal, and what ever they use in the thermoplastic coating of the carbon fiber gets way hotter than that, so the protection is not going to be effective for as long.
I've spent some time in 7 layer fire suits (as a volunteer fire fighter / EMT). In the summer, working on jaws and saws training, I recall dropping 10% of my body weight in an hour (was in high school and only about 100 lbs and almost zero body
fat at the time) despite taking rests and drinking lots of water. Nomex is wonderful when fire is reaching out to grab you, but it keeps heat IN too. Gets worse in the fire fighting application, when you add heavy gloves and boots, a steel helmet, nomex
baclava, and a scottpack (breathing apparatus) - and are lugging a ladder, hose, or the Irons. There were times when I sweat enough to collect measurable amounts of sweat inside my boots - and I was RESCUE! Spent most of my time crawling around looking for
victims or keeping them company until the calvary arrived.
Scottie
I've
had too many MRIs to count....
Metal
is not an issue as long as it's NOT magnetic. Iron, nickel,
others.
I have a bit of titanium and several gold crowns. No
problem.
I have friends with titanium hip and knee replacements.
MRIs
are OK. My daughter has bunches of metallic stuff in her leg.
And
she has had MRIs also. Helps that she is a medical doctor, so she
should
know what she is doing.
As
for jewelry, I guess it depends on composition. Most rings, etc.
should
not be an issue. But maybe earrings? Do they have any steel
for
strength? I don't know.
Hans.
PS:
Had a brain MRI to try to diagnose a neurological issue. (Turned
out
the problem was in my spine.) The doctor brought it up on his
computer
screen, and said "I have good news on your brain scan. It's
not
empty." I think failed comedians end up in med school.
On
4/18/22, scott saidel <scott_saidel [at] hotmail.com>
wrote:
George
MRI uses magnetic field to flip hydrogen molecules in your body. The closer
you are, the higher the magnetic effect. There are stories of iv poles and
oxygen canisters being sucked in from across the room. A piercing - even a
tattoo with metallic ink - can have a significant effect when you are in the
machine - and can be pulled tight off of the patient. They can also heat up
and cause burns. Obviously a problem if the patient is unconscious and the
metal is not identified.
Scottie
Sent from my iPhone
On Apr 18, 2022, at 9:06 AM, George <ygpz4re [at] hotmail.com> wrote:
What about all those body piercings some of them (Hamilton especially) seem
to have? Yet another reason to think they're the stupidest thing ever.....
(and for us dummies, what happens in an MRI machine if there is metal on
your body? Is it like putting metal into a microwave oven?)
gp
________________________________
From: scott saidel <scott_saidel [at] hotmail.com>
Can?t opine, much, on underwear but you certainly wouldn?t want any metal on
your body if they had to slip you into a mri machine.
Sent from my iPhone
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