1 Installation
1.3 Gas Supply Plumbing
10
GC-2014
Q Precautions on handling hydrogen gas
WARNING
HYDROGEN GAS PRECAUTIONS
Hydrogen can explode if it is allowed to accumulate in a poorly venti-
lated area.
1.Connect gas lines correctly. Hydrogen is released into the room if
the tubing is accidentally connected to the air inlet.
2.When the unit is not in use, close the main valve of the hydrogen
gas cylinder. Check for leaks at the main valve.
3.Every time the unit is used, check for leaks along the flow line from
gas cylinder to the unit interior.
4.To prevent an explosion due to a hydrogen gas leak, the room in
which the unit is used should be well ventilated. Prohibit the use of
open flame in this room.
5.Close the main valve of the hydrogen cylinder immediately after
completing the analyses. Then, turn OFF the unit and perform
normal shut-down procedures.
WARNING
HYDROGEN GAS HANDLING PRECAUTIONS
The accumulation of hydrogen gas inside the column oven can cause
an explosion.
Close all hydrogen regulator valves not in use and stop gas supply.
(When a manual regulator valve is used, turn its control to make the
pressure zero. For APC, turn off the APC for hydrogen gas.) Seal the
column connection.
When a detector that uses hydrogen gas is not in use
Capillary adapter
Graphite ferrule
with a wire
Column nut
Plug
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