Hi all, we have had very few dewar losses, even though we ship 2 dewars each weak to various synchrotrons. There might be a significant element of luck, but we have implemented a couple measures that might help:
- Most of our catastrophic losses happened with a break at the neck of the dewar. We have a suspicion that if you carry the dewar on only one of the two handles of the shipping box, you apply more strain to the neck of the dewar than if you carry it upright with both handles. We have then taken off the handles from the shipping boxes. You could even add a handle at the very top. Not sure about causality, there is a correlation. Of course this does not help when dewars tip over ... or arrive at the synchrotron upside down. - To predict creeping deterioration On Thu, Jun 25, 2020 at 6:47 AM Syun-Ru Yeh <syun-ru....@einsteinmed.org> wrote: > We had a similar experience with a CX100 a few years ago. We found some > small chunks of white powder leaking out of the inner chamber of the dewar, > which was associated with a dramatic reduction in the cooling capacity. We > contacted a local distributor, who asked us to ship back the dewar for > examination, to determine the cause. We did. It was then concluded that the > inner container probably moved during shipment(s), which pinched the > absorbent (white) material causing it to leak out. It could not be > repaired, but we were able to get a free replacement as it was within the > warranty (which can be determined by the S/N number printed on the dewar). > > Best, > Syun-Ru > > --- > Syun-Ru Yeh, Professor > Department of Physiology and Biophysics > Albert Einstein Collage of Medicine > Bronx, NY 10461 > > > ------------------------------ > *From:* CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK> on behalf of Jan > Dohnalek <dohnalek...@gmail.com> > *Sent:* Thursday, June 25, 2020 8:41 AM > *To:* CCP4BB@JISCMAIL.AC.UK <CCP4BB@JISCMAIL.AC.UK> > *Subject:* Re: [ccp4bb] [EXTERNAL] Re: [ccp4bb] dewar horror stories > > *CAUTION: This email comes from an external source; the attachments and/or > links may compromise our secure environment. Do not open or click on > suspicious emails. Please click on the “Phish Alert” button on the top > right of the Outlook dashboard to report any suspicious emails.* > The trouble is no other company does international LN2 shipments here ... > So we stopped shipping dewars completely. > > Jan > > > On Thu, Jun 25, 2020 at 2:27 PM Schreuder, Herman /DE < > herman.schreu...@sanofi.com> wrote: > > I had a similar one-sided discussion with FEDEX about their ignoring of > our customs declarations for Switzerland. That was then the last Dewar we > sent by FEDEX. > > > > Best, > > Herman > > > > *Von:* CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK> *Im Auftrag von *Jan > Dohnalek > *Gesendet:* Donnerstag, 25. Juni 2020 08:34 > *An:* CCP4BB@JISCMAIL.AC.UK > *Betreff:* [EXTERNAL] Re: [ccp4bb] dewar horror stories > > > > *EXTERNAL : *Real sender is owner-ccp...@jiscmail.ac.uk > > > > We have the suspicion (after several heavy FEDEX failures) they just toss > them around ... then the neck easily breaks off. > > That only explains everything we have seen with completely damaged > samples, lost, flying around the dewar etc ... > > When trying to communicate seriously with FEDEX about these issues - they > even did not reply ... > > > > Jan > > > > > > > > On Wed, Jun 24, 2020 at 9:27 PM Patrick Loll <pjl...@gmail.com> wrote: > > Hello community, > > > > We recently had a dry shipping dewar fail catastrophically (while en route > to the beam line, so, major trauma). I sent it to a company that > specializes in repair and refurbishing of cryogenic tanks, and they told me > it has an internal leak, and hence is not reparable. I was expecting that > the valve had failed, so the internal leak diagnosis came as a surprise. > > > > Has anyone else had a similar experience? Any ideas about how an internal > leak might come about? The dewar is (was) a Taylor/Wharton CX100, and it > was traveling in its bespoke shipping case. > > > > Thanks for any insights that might satisfy my curiosity and/or prevent > future mishaps of this sort. > > > > Cheers, > > > > Pat > > > > __________________________ > > > > Patrick J. Loll, PhD > > Professor of Biochemistry & Molecular Biology > > Drexel University College of Medicine > > Room 10-102 New College Building > > 245 N. 15th St. > > Philadelphia, PA 19102-1192 USA > > > > (215) 762-7706 > > pj...@drexel.edu > > > > > ------------------------------ > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 > <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Furldefense.proofpoint.com%2Fv2%2Furl%3Fu%3Dhttps-3A__www.jiscmail.ac.uk_cgi-2Dbin_WA-2DJISC.exe-3FSUBED1-3DCCP4BB-26A-3D1%26d%3DDwMFaQ%26c%3DDbf9zoswcQ-CRvvI7VX5j3HvibIuT3ZiarcKl5qtMPo%26r%3DHK-CY_tL8CLLA93vdywyu3qI70R4H8oHzZyRHMQu1AQ%26m%3DtHIcVAtKk5YdRxIBzLho11ppNDkaH-avpnFs_37lwH0%26s%3DPYxKUwCdRR-6mIIlKRTPRWC1bueGjj3go5N923mkOnk%26e%3D&data=02%7C01%7Csyun-ru.yeh%40EINSTEINMED.ORG%7C0ebfe1e3b7bf41e63f2908d8190520c5%7C9c01f0fd65e040c089a82dfd51e62025%7C0%7C0%7C637286857110104764&sdata=SGqRILIMeGpclr85hC5g0wi1jRX%2Bnq%2B40IGwzfmlBKE%3D&reserved=0> > > > > -- > > Jan Dohnalek, Ph.D > Institute of Biotechnology > > Academy of Sciences of the Czech Republic > > Biocev > > Prumyslova 595 > > 252 50 Vestec near Prague > > Czech Republic > > Tel. +420 325 873 758 > > > ------------------------------ > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 > <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Furldefense.proofpoint.com%2Fv2%2Furl%3Fu%3Dhttps-3A__www.jiscmail.ac.uk_cgi-2Dbin_WA-2DJISC.exe-3FSUBED1-3DCCP4BB-26A-3D1%26d%3DDwMFaQ%26c%3DDbf9zoswcQ-CRvvI7VX5j3HvibIuT3ZiarcKl5qtMPo%26r%3DHK-CY_tL8CLLA93vdywyu3qI70R4H8oHzZyRHMQu1AQ%26m%3DtHIcVAtKk5YdRxIBzLho11ppNDkaH-avpnFs_37lwH0%26s%3DPYxKUwCdRR-6mIIlKRTPRWC1bueGjj3go5N923mkOnk%26e%3D&data=02%7C01%7Csyun-ru.yeh%40EINSTEINMED.ORG%7C0ebfe1e3b7bf41e63f2908d8190520c5%7C9c01f0fd65e040c089a82dfd51e62025%7C0%7C0%7C637286857110104764&sdata=SGqRILIMeGpclr85hC5g0wi1jRX%2Bnq%2B40IGwzfmlBKE%3D&reserved=0> > > > > -- > Jan Dohnalek, Ph.D > Institute of Biotechnology > Academy of Sciences of the Czech Republic > Biocev > Prumyslova 595 > 252 50 Vestec near Prague > Czech Republic > > Tel. +420 325 873 758 > > ------------------------------ > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 > <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.jiscmail.ac.uk%2Fcgi-bin%2FWA-JISC.exe%3FSUBED1%3DCCP4BB%26A%3D1&data=02%7C01%7Csyun-ru.yeh%40EINSTEINMED.ORG%7C0ebfe1e3b7bf41e63f2908d8190520c5%7C9c01f0fd65e040c089a82dfd51e62025%7C0%7C0%7C637286857110114764&sdata=snT6Z1Jxlrc%2Fzk%2BiK2si6D%2B9We6QCjZzomLAbdYMzX0%3D&reserved=0> > > ------------------------------ > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 > -- Jan Abendroth UCB BioSciences Seattle / Bainbridge Island, WA, USA home: jan.abendr...@gmail.com work: jan.abendr...@ucb.com ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
