Since one should be mostly concerned about one's eyes, one might consider
wearing glasses with UV absorbing plastic in them if one is going to be
looking at the source a lot.
I agree with Terry. The small amount of leakage would not be something to
worrry about. I believe Judy said she uses open FL fixtures but doesn't hang
around them (practical application of the inverse square law). Oh, and
before someone points out that a FL tube is not a point source, let me add
that I know that and we have been through all that and the bottom line
is that the radiation from an FL tube sill falls off with increased distance
according to a complex relationship which reduces to the inverse square law
for large distances.
If you want a good, cheap UV leak detector, get yourself a plastic flourencent
toy (thats flourescent toy) or some other flourescent object like an alarm
clock dial. A white T-shirt or sheet works pretty well also. I have a
plastic lizzard that I got at Spencer Gifts in the US that lights up real
good when around my bank of UV FL bulbs. (Does lizzard have two Z's or
one Z like "Wizard?)
Ordinary eyeglasses absorb some UV especially the short wavelength variety.
Welder's goggles are used to reduce BOTH visable light and UV radiation.
The so-called "skylight" filter is nothing more than a UV filter. I suppose
one could be used as a monocule.
Bob Schramm