Practical Test

Question 1

Breach

Answer 1

• Puncture
• Split
• Open or break
• Runaway cracking
• Disintegration

Question 2

Stress

Answer 2

Chemical, mechanical, thermal

Question 3

4 gas meter

Answer 3

CO - 35-200
O2 - 10.5-23.5
H2S - 10-15
LEL- 10-20
Flammable Range - 5-15% 
10% low, 20% high 
10%=.5

Question 4

Dispersion Patterns

Answer 4

• Plume
• Hemispheric
• Cone
• Stream
• Pool