Thermo Scientific TSQ 8000, User Manual

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Preface
Hydrogen Safety Precautions
xiv TSQ 8000 Evo User Guide Thermo Scientific
• As with laboratory safety in general, be sure to wear safety glasses, laboratory coats,
gloves, etc. Typically there are no specific requirements for gaseous hydrogen, other than
eye protection when working with a compressed gas. If working with liquid (cryogenic)
hydrogen, insulated gloves and protective shoes should be worn in addition to eye
protection.
• You should post “No Smoking” and “No Open Flames” signs to identify hydrogen
sources and cylinders. Maintain, inspect and leak-test all hydrogen sources regularly.
• All hydrogen shutoff valves should be clearly marked and permanent hydrogen piping
should be labeled as such at the supply or discharge point and at regular intervals along its
length. Where hydrogen gas piping passes through a wall, the piping should be labeled on
both sides of the wall.
• There should also be contingency plans in place should an incident occur.
• The site emergency response team, as well as the local fire department, should know the
location of all hydrogen storage tanks.
Using Hydrogen with a GC-MS/MS System
To use hydrogen with the mass spectrometer, you must always shut off the GC carrier gas
before venting or turning off the mass spectrometer. There are three hydrogen safety screws on
the mass spectrometer that
must be in place. These are attached to your instrument at the
factory.
Figure 1. Hydrogen Safety Screws on the Mass Spectrometer
Before powering on the GC-MS/MS system, ensure that:
Left Top
Cover Screw Right Top
Cover Screw
Front Panel
Screw