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HEALTH AND SAFETY
EPT019297 Issue 1 November 2016 1-5
Fire Risk
For an electrical fire, do not use water. If water must be used, such as in the case of a
Nitro-cellulose ink fire (see below) the power MUST BE REMOVED first.
Some inks contain Nitro-cellulose as the binder and remain highly flammable when dry. Observe
all warnings given on the machine and the following safety instructions:
• If there has been an accumulation of dried ink, do not use metal scrapers to remove it, as
they can produce sparks.
• If dry Nitro-cellulose based ink ignites, it will generate its own oxygen and can only be
extinguished by lowering the temperature with water.
• If a Nitro-cellulose fire occurs, ENSURE THAT THE ELECTRICAL POWER IS IMMEDIATELY
REMOVED FROM THE PRINTER BEFORE water is used to extinguish the fire.
Fire risk is a most important consideration where printing inks are stored and used. The degree of
fire hazard will vary considerably from one type of ink or wash to another.
Water-based inks will not burn, although inks based on water-alcohol mixtures may burn if there
is sufficient alcohol present.
Prolonged exposure of water-based systems to high temperatures may evaporate the water to
give a flammable residue.
Solvent-based inks offer a greater degree of hazard depending on the particular solvent or solvent
combination. When there is a particular hazard the appropriate information is given on the SDS.
The printers place small electrostatic charges on the ink drops used for printing. In most
circumstances, such as when they arrive at the print surface, these electrostatic charges are
either conducted away or cannot accumulate. However, during maintenance, print drops may be
collected in a container, such as a beaker. It is essential that this container is made of conducting
material and is securely connected to ground/earth. The electrostatic charges will then be safely
conducted to ground/earth.
If there is a fire, there is a likelihood that dangerous fumes will arise from printing inks. For this
reason ink must be stored where it can be reached quickly by the fire fighting service, and where
it will not spread beyond the store.
Spillages and Disposal
WARNING: Do not allow the ink to dry or allow any build-up of dried ink spills.
Some dried inks are highly flammable. Clean up all ink spillages
immediately.
Spillages must be cleaned up as soon as possible with the appropriate solvent materials and with
regard to the safety of personnel. Care must be taken to prevent spillages or residue from
cleaning up entering drains or sewage systems.
Inks and associated fluids are materials which conduct electricity. Therefore, power to the printer
must be switched off while spillages inside the printer cabinet are being cleaned up.
Printing inks and associated fluids must not be treated as ordinary waste. They must be disposed
of using approved methods according to local regulations.