Job Hazard Analysis Page 15
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32This material is for training use only
6. Heat and Temperature. Overexposure to heat and temperature extremes may
result in a range of injuries from burns to frostbite. Temperature indicates the level of
heat present. The second law of thermodynamics states that heat will flow from an area
of higher temperature to one of lower temperature. Heat is produced as a result of
chemical reaction, combustion, electrical current, mechanical motion, and metabolism.
Heat is transferred by:
Convection. Heat is transferred by the movement of molecules through a gas or liquid.
Radiation. Heat is transferred by heat waves and occurs when an object’s temperature is
below that of an object near to it which has a temperature above the object’s temperature.
Conduction. Heat is transferred from one body to another by direct contact of the two
bodies or by an intervening heat conducting medium.
Examples: _________________________________________________________
7. Flammability/Fire. Fire may cause burn injuries. In order for combustion to take
place, the fuel and oxidizer (oxygen) must be present in gaseous form. Flammable
materials include:
fuel
solvents
cleaning agents
lubricants
coatings
chemicals
refrigerants
insecticides
plastics
hydraulic fluid
vegetation
wood/paper
fabrics
metals
rubber products
Examples: _________________________________________________________
8. Explosives. The results of an explosion may range from minor injury to major
catastrophe (Space Shuttle Challenger). Instantaneous release of gas, heat, noise, or light
and over-pressure, creates a wave front that damages anything in its path. About 2 billion
pounds of explosives are used by industry annually in construction, mining, quarrying,
and seismographic work. Many types of explosions may occur:
c
hemicals
solids
gases
dusts
vapors
equipment
Examples: _________________________________________________________
Job Hazard Analysis (JHA)
13
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Business