When pouring a cryogen, working with a wide-mouth Dewar flask or around the exhaust of cold boil-off gas, use of a full face shield is recommended.
32.
Although not a cryogen, solid carbon dioxide or dry ice which converts directly to carbon dioxide gas at-78 �C (-109 �F ) is also often used in laboratories.
33.
Spontaneous quenches are uncommon, but a quench may also be triggered by an equipment malfunction, an improper cryogen fill technique, contaminants inside the cryostat, or extreme magnetic or vibrational disturbances.
34.
Tanks storing cryogens, such as liquid oxygen and liquid hydrogen, require either venting, extremely good insulation, or both, in order to avoid excessive pressure buildup due to vaporization of the tanks'contents.
35.
Other methods of shrink-fitting include compression shrink fitting, which uses a cryogen such as liquid nitrogen to cool the insert, and shape memory coupling, which is achieved by means of a phase transition.
36.
Apart from the personal involvement of Commission members in various projects, the Commission is present at conferences, workshops and seminars : LNG International Exhibition and Conference, GASTECH, Cryogenics, Cryogen Expos, European Cryogenic Course and others.
37.
MR Solutions high field, cryogen-free MRI system with an in-line PET module was installed at the University of Michigan in January 2016 and at the Georges-Fran�ois Leclerc center in Dijon, France in February 2016.
38.
However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the "'Spitzer Warm Mission " '.
39.
In order to salvage some functionality from the spacecraft, operations were redirected after the failure of the cryogen system to an alternate science mission using the undamaged onboard star tracker for long-term monitoring of bright stars in support of an asteroseismology program.
