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1.3.4 Mechanical Hazards
If equipment has been installed to manipulate the component and/or spray gun, it is
important that it is designed to protect the operator from mechanical hazards. It is possible for
the operator to be struck by a moving table or manipulator, to be crushed against the wall of
the booth, or to become entangled in rotating machinery. Serious injury could occur. Trailing
cables and other obstructions present a tripping hazard, and because of the relatively confined
area of a spray booth, and the close proximity to machinery, the consequences may be
serious.
Key Hazards:
Entanglement, being struck by machinery, trips and falls.
1.3.5 Fume & Dust
Powdered metals, particularly titanium, aluminium and magnesium give rise to a fire
and explosion risk, depending on the circumstances. Powdered materials can collect in
ducting, on filters, and around the spray booth. If these accumulations are heavy, and they are
disturbed, they can be ignited. An explosion may result from the ignition of a dust cloud,
inside, or outside the equipment. A fire may follow from an explosion and its fireball, or may
result from self-ignition of layers of accumulated dust on hot surfaces, including some
electrical equipment.
Many of the materials that are routinely sprayed have the potential to be hazardous to health
due to their intrinsic properties. Even the least toxic materials, if present in the air in sufficient
quantities, can be hazardous to health. Dust produced by the process produce airborne
particulate matter, in size ranges that can be inhaled. Both inhalable and respirable matter
may be produced. Respirable particles are more dangerous because they can be breathed
deeply into the lungs. The user must therefore identify the hazards, assess the risks, and
prevent or, where not reasonably practicable, adequately control them. The assessment must
take into account all occasions where exposure may occur
– which include spraying, cleaning,
disposal and maintenance.
Several commonly sprayed substances are subject to statutory exposure limits. The
assessment must take into account these exposure limits. When a substance or preparation
has an occupational exposure standard, control of exposure is adequate if levels are
maintained below that standard. The information that follows includes the most commonly
sprayed materials. However, other materials may also be toxic. It is essential that users
consult the MSDS (Material Safety Data Sheets) that arrive with their consumables
(manufacturers must supply these), so that they can take into account the health effects, any
exposure limits, and any properties such as explosion hazard, when conducting their risk
assessments.
Key Hazards:
Fire & explosion, toxic effects by inhalation, toxic effects by skin contact.
The information that follows highlights the most commonly sprayed materials and their
potential effects.
= Highly Flammable
= May react with water to form hydrogen
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 ...
