1 The test methods involve the use of
materials that may be hazardous to health as follows:
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.1 Sulphur Dioxide: Corrosive when wet, toxic
if inhaled, causes burns, and is an irritant to the eyes and respiratory
system.
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.2 Hydrogen Sulphide: Highly flammable (Flash
point of -82°C), can form an explosive mixture with air, corrosive
when wet, causes burns, has to be kept away from sources of ignition,
irritant and asphyxiant, LTEL 5 ppm, STEL 10 ppm, higher concentrations
can be fatal and have no odour. Repeated exposure to low concentrations
can result in the sense of smell for the gas being diminished.
-
.3 Benzene: Highly flammable (Flash point of -11°C),
can form an explosive mixture with air, toxic, carcinogenic, acute
health risk.
-
.4 Toluene: Highly flammable (Flash point of 4°C),
can form an explosive mixture with air, irritant, acute health risk,
reprotoxin.
2 Special test apparatus and precautions
may be required depending on the regulations in force in the country
where the tests are carried out.
3 Although some countries have no specific
requirements preventing either of the tests being carried out, it
shall anyhow be required that:
-
.1 a risk assessment of the working conditions
is carried out;
-
.2 during the test period, the system shall be
enclosed; and
-
.3 the environment shall be controlled, particularly
at the start and end of the tests, suitable air exhaust shall be available
and personal protective equipment shall be worn.