Hi What the "exemption" allows you to do is to ship it at all via Fed Ex or UPS. If you read through it, the mandatory employee training and certification requirement is in the pdf. As soon as your local FedEx guy sees the big yellow stickers, things get complicated. Getting the 5071 shipped was a *major* hassle.
Bob On Sep 23, 2013, at 2:16 PM, Tom Knox <act...@hotmail.com> wrote: > Thanks Corby for adding the link, I should have provided the link in my > earlier post. > The shipping concern is because Cesium or Caesium metal is highly reactive > and very pyrophoric. In addition to igniting spontaneously in air, it reacts > explosively with water even at low temperatures, but the small amount of > actual Cesium in a Cesium standard as well as the hardening provided by that > tube structure were important factors in it's exemption. I have recieved and > shipped Cesium standards both in the USA and internaionally using the DOT > exemption with no problem. I have a hard case designed specifically for that > purpose which came with a Datum 4065C but is also perfect for the 5071A. It > has all the critical warning and exemption information in metal labels > riveted to the outside of the case. I have seen these cases on eBay from time > to time. Be aware there is a limit of how many Cesium standard can be shipped > at once under the exemption, I think it is five. Not really a factor for most > of us. > In any case I would use extreme caution if you ever open one for examination. > To bad some industrious Time-Nut has not started a small business rebuilding > Depleted Tubes. I have heard that failure often occurs when Cesium becomes > mixed with contaminants and stuck to the enclosure walls, and there is a > method to remove it. I know increasing the cell temp brings some standards > back to life. And perhaps after heating and boiling the Cesium off he walls > the cleaner tube can then be returned to factory settings? > I am sure a number of you have far more expertise and have experimented with > these ideas to determine whether there is any truth to these tall tails. If > so I am sure I am not the only one that would enjoy hearing what you know, > perhaps on a new thread. > Thanks; > Thomas Knox > > > >> To: time-nuts@febo.com >> Date: Sun, 22 Sep 2013 23:57:43 -0700 >> From: cdel...@juno.com >> Subject: [time-nuts] HP5061B Beam Tubes >> >> Per the following Symmetricom instructions, HP/Agilent/Symmetricom tubes >> or instruments with tubes are exempt from the Hazmat requirements if >> shipped within the USA. You still have to label them per the instructions >> and as stated you are considered "trained" If you understand the >> instructions. >> >> http://www.symmetricom.com/media/files/downloads/product-datasheets/shipp >> ing_instructions.pdf >> >> >> One other source for tubes for your 5060A/5061A/5061B (and 5062C with a >> bit more mods) is to use FTS tubes removed from FTS 4050 and 4060 units. >> Some minor mechanical mods and you have to make adaptor cables but they >> are simple to make. >> >> Corby >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
