Tags: dust  exposure  fever  foundry  fume  hazard  hazardous  hazwoper  health  hygiene  industrial  material  metal  NIOSH  OSHA  sampling  vapor  welding  
Channel: Education
Uploaded: December 31, 1969 at 6:59 pm
Author: markdcatlin
Length: 00:08
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Views: 25
In general use, the word fume means a gas, smoke, or vapor, especially if offensive or suffocating, such gasoline or paint fumes. However, industrial hygienists define the term fume in a more narrow way - Fumes are solid particles formed by condensation from the gaseous or vapor phase. Take care not to confuse the two in the workplace. For example, a respirator that protects against fumes will not protect against solvents, such as gasoline vapors. Fumes usually result from chemical reactions such as oxidation or from sublimation or distillation processes followed by condensation; examples are oxides of iron and copper. Fume particles are usually less than 1 micrometer in diameter and can be breathed into the alveoli deep in the lungs but are usually breathed out again and so may be less of a hazard than larger particles in the PM10 fraction. For more information check out the guidance from the British Health and Safety Executive, Molten metal fume: pouring and casting, found at http://www.hse.gov.uk/pubns/gu... . This was clipped from the 1998 NIOSH video, Caution: Foundry at Work, available at the NIOSH website and at the Internet Archives.