At 01:40 AM 30/07/2008, you wrote:
HA,
I was trawling through some aviation museums in Europe and noticed
that there is a health warning on some cockpits. For example, I
think the aircraft preservation people in the UK are only allowed 10
minutes exposure in some cockpits like Blaniks due to the radiation
from the primitive instruments. Same story in Lancaster bombers.
I guess that is probably as long as you would want to spend in a
Blanik cockpit, but it does question the sense in "restoring" them.
D McD
Anyone got access to a radiation counter and a Blanik?
Might be interesting.
Also interesting is a scientific paper I have about a study on
radiation exposure in Taiwan. Seems someone mixed an old industrial
cobalt radiation source into a bunch of scrap steel which ended up
as reinforcing rods in concrete which went into an apartment
building. After some years this was found out and a study done on the
people who lived there. This was a good study as there were lots of
other people in the same situations in other apartment buildings so
there was a good control group. They looked for cancer rates amongst
the exposed - and found that they were 3% of what they expected.
Journal of Amercian Physicians and Surgeons Volume 9 Number 1 Spring 2004
Radiation exposure allowances are based on the "Linear No Threshold"
theory on the grounds that this is conservative and safe. There is
evidence that it doesn't work like that for low doses.
Mike
Borgelt Instruments - manufacturers of quality soaring instruments
phone Int'l + 61 746 355784
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Int'l + 61 429 355784
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