7.5 Specific agents

Legionella bacteria grow in water systems at roughly:

• 1 20 to 45 degrees C
• 2 0 to 10 degrees C
• 3 60 to 80 degrees C
• 4 Above 100 degrees C

Silicosis is caused by:

• 1 Carbon monoxide
• 2 Wood dust
• 3 Cement splashes
• 4 Silica dust

Carbon monoxide is dangerous because it:

• 1 Is heavier than all other gases
• 2 Is highly visible
• 3 Smells strongly
• 4 Reduces the blood's ability to carry oxygen

Leptospirosis is spread by:

• 1 Radiation
• 2 Wood dust
• 3 Urine of rats and other animals
• 4 Noise

Asbestos fibres inhaled can cause:

• 1 Hearing loss
• 2 Legionnaires' disease
• 3 Mesothelioma
• 4 Leptospirosis

Where might asbestos be found?

• 1 In clean air
• 2 In new plastic bottles
• 3 In older buildings in insulation, boards and pipe lagging
• 4 In fresh water

Which control applies to asbestos found in an older building?

• 1 Drill into it to check
• 2 Remove it with ordinary staff
• 3 Find out whether it is present and manage it in place if undisturbed
• 4 Brush it clean

Hepatitis B and HIV are:

• 1 Bacteria
• 2 Blood-borne viruses
• 3 Fungi
• 4 Dusts

A common route for blood-borne virus infection at work is:

• 1 Radiation
• 2 Noise
• 3 A sharps injury
• 4 Heat

A control for blood-borne viruses is:

• 1 Reusing needles
• 2 Handling sharps barehanded
• 3 Leaving waste in the open
• 4 Safe disposal of sharps

Carbon monoxide is produced by:

• 1 Wood dust
• 2 Incomplete combustion
• 3 Welding rods
• 4 Cement

A control for carbon monoxide risk is:

• 1 Opening sealed flues
• 2 Maintenance and ventilation of fuel burning appliances
• 3 Removing detectors
• 4 Using appliances in closed rooms

Wet cement can cause:

• 1 Radiation burns
• 2 Hearing loss
• 3 Legionnaires' disease
• 4 Alkaline burns and dermatitis

Legionella bacteria grow in water at roughly:

• 1 20 to 45 degrees C
• 2 Below 5 degrees C
• 3 100 to 120 degrees C
• 4 70 to 90 degrees C

Legionnaires' disease is caught by:

• 1 Being near X-rays
• 2 Eating dust
• 3 Breathing in contaminated droplets
• 4 Touching cement