General Information
Site Preparation Guide 9
Hydrogen Safety
Hydrogen gas may be used as carrier gas, and/or as fuel for certain GC
detectors. When mixed with air, hydrogen can form explosive mixtures.
A detailed discussion of hydrogen safety appears in Chapter 1 of the Agilent
5975 MSD Troubleshooting and Maintenance Manual. Read this material
before using hydrogen with the MSD.
When using hydrogen gas, check the system for leaks as described by your
local Environmental Health and Safety (EHS) requirem ents to prevent
possible fire and explosion hazards. Always check for leaks after changing a
tank or serv icing the gas l ines. Always make sure the vent li ne is vented int o a
fume hood.
WARNING When using hydrogen (H2) as the carrier gas or fuel gas, be aware that hydrogen
gas can flow into the oven and create an explosion hazard. Therefore, be sure that
the supply is off until all connections are made, and ensure that the GC inlet and
detector column fittings are either connected to a column or capped at all times
when hydrogen gas is supplied to the instrument.
Hydrogen is flammable. Leaks, when confined in an enclosed space, may create a
fire or explosion hazard. In any application using hydrogen, leak test all
connections, lines, and valves before operating the instrument. Always turn off the
hydrogen supply at its source before working on the instrument.
WARNING The MSD cannot detect leaks in gas streams. For this reason, it is vital that column
fittings should always be either connected to a column, or have a cap or plug
installed.
5975 Series Site Prep.book Page 9 Thursday, January 31, 2008 9:47 AM