INTRODUCTION
Pressurized equipment
See Oil test equipment, lubrication test equipment, and high-pressure air test equipment.
Resistance welding
See Welding.
Sealants
See Adhesives and sealants.
SOLDERING
See Welding.
Solders are mixtures of metals whose melting point is lower than that of the constituent metals (normally lead and
tin). Applying solder generally does not release toxic lead fumes, since a gas/air flame is used. You must not use
oxy-acetylene flames because they are much hotter and cause lead smoke to be released.
Smoke may be produced when you apply any flame to surfaces covered in grease etc. It is recommended that you
avoid inhalation.
You must remove excess solder carefully so as not to produce a fine lead dust, which has toxic effects if inhaled. You
may need to use respiratory protection.
You must collect solder spillage and filing in order to prevent general contamination of the air with lead.
High hygiene standards are necessary to prevent ingestion of lead and inhalation of solder dust from clothes.
SOLVENTS
See Chemicals – General. See Fire.
Examples: acetone, turpentine, toluene, xylene, and trichloroethylene.
Used in materials for cleaning and wax removal, paints, plastics, resins, thinners etc.
Highly flammable, flammable.
Contact dries out the skin, and prolonged or recurrent contact can cause irritation and dermatitis. Some can be
absorbed through the skin in toxic or harmful quantities.
Splashes into the eyes can cause serious irritation and even lead to blindness.
Brief exposure to high concentrations of fumes or clouds can cause throat irritation, dizziness, headaches, and, in the
worst cases, unconsciousness.
Recurrent or prolonged exposure to large quantities, but with lower-concentration fumes or clouds, where the warning
signs are insufficient, could cause effects that are toxic or more seriously harmful.
Inhalation into the lungs (e.g. by vomiting) is the most serious consequence of ingestion.
Avoid splashing into your eyes and nose, or onto your skin and clothing. Wear protective sleeves, protective goggles,
and protective clothing, if necessary.
Ensure that there is good ventilation during use, avoid inhaling smoke, fumes, and spray clouds, and keep containers
securely closed. Do not use in enclosed spaces.
When the spraying material contains solvents – e.g. paints, adhesives, coatings – use an extractor fan or personal
respiratory protection in the absence of adequate general ventilation.
Do not apply heat or flame, except in accordance with specific and detailed instructions from the manufacturer.
Soundproofing
See Fiber insulation and Foams.
Spot welding
See Welding.
SUSPENDED LOADS
There is always danger when loads are lifted or hoisted. Never work underneath a suspended load or a lifted load
without support, e.g. vehicle lifted up with a service jack, suspended engine etc.
Lifting equipment such as jacks, hoists, axle supports, slings etc. must always be suitable for the work, be in good
condition and undergo regular maintenance.
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