PRELIMINARY COURSE ASSESSMENT

CHEMISTRY:

REACTION RATES

 

HOMEPAGE

PART A

PART B

PART C

BIBLIOGRAPHY

TEAM MEMBERS

GUEST BOOK

ABOUT

 

 

Q.

a) The importance of collisions between reacting particles, and 

b) the need for safety in work environments where fine particles mix with air. *

 

Page: 9 of 10 (* currently answering part (b) )

 

The following is a list of potentially dangerous work environments where fine particles mix with air:

 

Petrol stations; below deck on boats; fuel or chemical transfer or storage facilities; areas where petrol or propane odours are present due to leaks; locations where the air contains chemicals or particles such as grain, dust, or metal powders; and any other situations where the advice would be to turn off a vehicle engine are potentially explosive atmospheres

 

In areas where blasting operations occur (usually signed blasting area or turn off two-way radio) in which all signs and instructions should be obeyed.

 

Before boarding an aircraft and while in the air.

 

Where there are notices instructing mobile phones to be switched off.

 

Inhalation prevention and respiratory protection

 

Many types of materials pose inhalation hazards. Each type varies in its degree of toxicity and physical hazard. Dusts are formed when solid materials are broken into small particles. Very small particles are easier to inhale and can cause greater damage to the lungs than larger particles.

Fumes are small particles created in high heat operations such as welding or soldering. Fume particles are very small and tend to remain airborne for long periods of time. Metals, some organic chemicals, plastics and silica can produce fume particles.

 

 

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