Well!
Filling Liquid Helium alone is always difficult and dangerous. However, we
have installed an exhaust system just in front of the helium boil off/ gas
outlet. We start the exhaust fan motor while filling, pushing the whole
boil off out of the room. We do not recover helium gas from this boil off.
I feel this kind of system would ensure good oxygenated atmosphere in the
lab.
Good Luck.
L.S.Mombasawala.
NMR Laboratory,
RSIC, IIT Bombay
India.
Phone : 0091-22-576 7691/2/3
Fax:0091-22-572 3314
_________________________________________________________________________
On Tue, 8 Jan 2002, Bill Stevens wrote:
> We all know that magnet quenches are expensive and can be injurious to
> health. Is anyone aware of serious injury or even death resulting from a
> quench? The geometry of my lab is such that I believe it would be very
> foolish to attempt a helium fill alone, but I may be about to lose my only
> trained assistant.
>
> He also is the only one who will do LN2 fills in my absence so, if he goes,
> so does ENC for me! (Not to mention vacations, but I haven't had one for
> twelve years anyway.)
>
> Best wishes to all for the new year.
>
> Bill
>
>
> William C. Stevens, Ph.D. NMR Facility
> Director Southern Illinois University
> Carbondale, IL 62901-4405
> 618-453-6498 fax -6408 U.S.A.
> http://opie.nmr.siu.edu/bill.html
>
>
Received on Wed Jan 09 2002 - 09:03:23 MST