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Aluminium
Long term inhalation of aluminium powder or aluminium oxide may cause scarring of the
lungs. Aluminium powder can form explosive mixtures with air.
Chromium
Prolonged exposure to chromium metal dust may give rise to lung fibrosis. It is highly toxic.
Chromium oxide and chrome carbide feedstock are both chromium (III), the less toxic form of
chromium. However spraying may convert chromium (III) compounds to chromium (IV)
compounds, which are suspected human carcinogens.
Exposure to chromium (IV)
compounds must be kept as far below the maximum exposure limit (MEL) as is reasonably
practicable.
Cobalt
Cobalt is moderately toxic. It may cause sensitisation by inhalation and skin contact, resulting
in occupational asthma and allergis dermatitis. Exposure must be kept as far below the
maximum exposure limit (MEL) as is reasonably practicable.
Copper
Copper fume may give rise to metal fume fever. Inhalation may cause muscle weakness and
headache. Some compounds of copper are highly toxic and may cause long term effects.
Iron
Inhalation of iron oxides over a long period may cause scarring of the lungs without
physiological symptoms.
Molybdenum
Occupational ill-health from exposure to molybdenum is unlikely.
Nickel
Nickel is harmful. Repeated skin contact may cause allergis contact dermatitis. It is a suspect
human carcinogen, and exposure must be kept as far below the maximum exposure limit
(MEL) as is reasonably practicable.
Tin
Tin powder may cause irritation. Inhalation over a long period may cause scarring of the lungs
without physiological symptoms.
Titanium
Occupational ill-health from exposure to titanium is unlikely.
Zinc
Zinc can cause metal fume fever, but is otherwise only moderately toxic.
NOTE:
In certain concentrations, a mixture of aluminium dust and iron oxide (rust) can
cause a thermitic reaction, resulting in a spontaneous combustion. This is very rare but
efforts should be made to minimise cross contamination of aluminium dust and iron oxide.
Summary of Contents for MK 73
Page 1: ...Page 1 of 64 ssue 21 11 11 ...
Page 43: ...Page 43 of 64 SECTION 5 FAULT FINDING 5 1 Troubleshooting 5 1 2 Flowmeter Troubleshooting ...
Page 58: ...Page 58 of 64 SECTION 8 INFORMATION TABLES 8 1 Flowmeter Settings 8 2 Nozzle Selection Chart ...
Page 61: ...Page 61 of 64 Notes ...
Page 62: ...Page 62 of 64 ...
Page 63: ...Page 63 of 64 ...
