PRATT Safety Systems Catalogue - Flipbook - Page 36
PRATT SAFETY SYSTEMS
DANGEROUS GOODS
INDOOR STORAGE CABINETS
PRATT SAFETY SYSTEMS HAS BEEN MANUFACTURING AND DISTRIBUTING CABINETS FOR OVER 30 YEARS.
ALL PRATT CABINETS ARE DESIGNED AND MANUFACTURED IN ISO9001 ACCREDITED FACILITY WITH FULL
CONFORMANCE TO AUS/NZ STANDARDS.
CLASS 3 FLAMMABLE LIQUIDS ARE LIQUIDS, or mixtures
of liquids, or liquids containing solids in solution or
suspension (but not including substances otherwise
classified on account of their dangerous characteristics)
which give off a flammable vapour at temperatures of not
more than 60°C, closed-cup test, or not more than 65.6°C,
open-cup test, normally referred to as the flash point.
CLASS 4 FLAMMABLE SOLIDS ARE MADE UP OF THE
FOLLOWING SUB-DIVISIONS:
DIVISION 4.1 FLAMMABLE SOLIDS
• FLAMMABLE SOLIDS, readily combustible and may
cause or contribute to fire through friction. They can also
be a powder or paste.
• SELF-REACTIVE SUBSTANCE, thermally unstable
substances that are liable to undergo a strong exothermic
reaction (heat release), or decomposition even without
participation of air.
DANGEROUS GOODS STORAGE
• SOLID DESENSITIZED EXPLOSIVES, substances that
are wetted with water, alcohol or are diluted with other
substances to form a solid mixture to suppress their
explosive properties. Desensitized explosives may explode
if not diluted sufficiently.
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• POLYMERIZING SUBSTANCES are substances which,
without stabilisation, are liable to undergo a strongly
exothermic reaction resulting in the formation of larger
molecules or resulting in the formation of polymers.
DIVISION 4.3 SUBSTANCES WHICH IN CONTACT WITH
WATER EMIT FLAMMABLE GASES
• DANGEROUS WHEN WET substances which when in
contact with water may emit flammable gases that can
form explosive mixtures with air. Such mixtures are easily
ignited by all ordinary ignition sources, e.g. naked lights,
sparking hand tools, or unprotected light bulbs. The
resulting blast wave and flames may endanger people and
the environment. Emitting gases may also be toxic.
CLASS 5.1 OXIDIZING AGENTS are substances which,
although not necessarily combustible, may, readily liberate
oxygen, or be the cause of oxidizing processes and, as a
result, may start a fire in, or stimulate the combustion of
other materials. Oxidizing agents can be either solids or
liquids.
CLASS 5.2 ORGANIC PEROXIDES are thermally unstable
substances, which may undergo exothermic selfaccelerating decomposition. They are sensitive to heat
and therefore prone to decomposition by burning. Under
certain circumstances, such as high temperatures, and
inadequate segregation from incompatible substances,
organic peroxides can ignite and cause uncontrollable
fires. Some organic peroxides are corrosive, which means
that they can attack and destroy metals. In addition, they
may have one or more of the following properties:
• be liable to explosive decomposition
• burn rapidly
• be sensitive to impact or friction
DIVISION 4.2 SUBSTANCES LIABLE TO SPONTANEOUS
COMBUSTION
• PYROPHORIC SUBSTANCES are substances, including
mixtures and solutions (liquid or solids) which can ignite
upon contact with oxygen, even in small quantities. These
Division 4.2 substances are the most liable to spontaneous
combustion.
• SELF-HEATING SUBSTANCES are substances, other
than pyrophoric substances, which in contact with air, and
without energy supply, are liable to self-heating. These
substances will ignite only when in large amounts and after
long periods of time.
• react dangerously with other substances
• cause damage to the eyes
CLASS 6.1 TOXIC SUBSTANCES are those which can cause
death, serious injury or harm to human health through skin
absorption, inhalation, or ingestion.
CLASS 8 CORROSIVE substances are substances which, by
chemical action, will cause severe damage when in contact
with living tissue, or, in the case of leakage, will materially
damage, or even destroy, other goods, or the means of
transport and may also cause other hazards.
Corrosive substances are also divided into two main types;
Acids and Alkalis, which are defined by their pH balance.
Acids are less than 7.0 pH, whereas Alkalis are more than
7.0 ph. However, Acids and Alkalis should also be stored
separately, as they can react violently if mixed.
P R AT T S A F E T Y. C O M
