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Edward Snell wrote:
Liquid nitrogen can also be shipped by air in a dry shipper. SSRL
routinely ships dry shipper back wet. To do this through FedEx requires
a longer training course, 3 days for $650, with details at:
http://www.fedex.com/us/services/options/express/dangerousgoods/seminars
.htm
(and more paperwork). Basically FedEx need a trained name who has
verified the material (Nitrogen, refrigerated liquid, Nonflamable,
UN1977, HazMat class 2.2, ERG no 120).
There's just one problem with that - at least that's what the UW Safety
Training says(I'm CCing him, just in case he can add some more details
to this topic) according to IATA dry shippers are called dry shippers -
guess why - correctly, because they are supposed to be shipped dry,
hence shipping them wet is violating IATA rules which can and will cause
troubles if a plane crashes (for ground shipment it's not a problem).
But even if you indicate ground shipment, you don't know what Fedex will
do, they usually have some planes in between or do you honestly think
they would send dry shipper from New York to Stanford on road ?
If the ground shipment with liquid is sufficiently better than the
equivalent dry shipper by air we will have someone take this course. A
quick and dirty comparison of ground versus air for dry-shippers showed
little difference in icing but a lot of difference in worrying where the
truck was for a few days.
We so far had no negative experience with any of our shipments with
Fedex cassettes & canes during our SGPP time. Although one dewar broke,
maybe because of mistreatment, but we don't know.
--
Jürgen Bosch
Howard Hughes Medical Institute and
University of Washington
Dept. of Biochemistry, K-418
1705 NE Pacific Street
Seattle, WA 98195
Box 357742
Phone: +1-206-616-4542
FAX: +1-206-685-7002
