27 HAZMAT

Question 1

19 Steps of decontamination?

Answer 1

1. Equipment drop
2. Suit, Boot Covers and Outer Glove wash
3. Suit, Boot Covers and Outer Glove rinse
4. Tape removal
5. Boot Covers removal
6. Outer Glove removal
7. Suit and safety boot wash
8. Suit, SCBA and safety boot rinse
9. Tank Exchange
10. Protective Boot removal
11. SCBA Backpack removal
12. Splash suit, SCBA removal
13. Inner glove wash
14. Inner glove rinse
15. Face piece removal
16. Inner glove removal
17. Inner clothing removal
18. Field wash
19. Redress

Question 2

How is a dose of a substance calculated?

Answer 2

Chemical+Concentration+Time=Dose

Question 3

Health Hazards!

Explain the difference in duration, effect and give an example of Acute and Chronic health effects!

Answer 3

1. Acute : type of chemical that the body can flush out.
   Duration: seconds to days
   Effects: Immediate, Mild to intermediate severity, recoverable
   Example: Hydrogen sulfide Gas: burning eyes and throat, may cause vomiting, but if area left in time you will recover.
   ————————————————————————
   Chronic: slow build up of a toxic substance in the body from repeated exposures.
   Duration: Months to life
   Effects: Delayed, Severe, Permanent
   Example: Not wearing SCBA at fires and during overhaul

Question 4

How can Hazardous Material enter the body?

Answer 4

1. Inhalation
2. Ingestion
3. Injection
4. Absorbtion

Question 5

What is the difference between a proximity suit and a fire entry suit?

Answer 5

1. Protective gear that allows you to fight flammable liquid fires that reach temperatures from 150-200 C is called a proximity suit.
2. Fire Entry Suits are designed for maximum fire protection and will protect individuals in temperatures of up to 1093 C.

Question 6

What does STEL stand for?

Answer 6

Short Term Exposure Limit

Question 7

What does TWA stand for?

Answer 7

Time Weighted Average

Question 8

What does TLV-C stand for?

Answer 8

Threshold Limit Value - Ceiling

Question 9

Chemical reactivity refers to a substance’s tendency to react with another substance.
Substance’s may be stable, unstable or reactive!
Define unstable and three forms of reactive substances?

Answer 9

1. Unstable substances are capable changing spontaneously; they decompose violently with little or no outside stimulus.
2. Reactive substances, as the name indicates, react with other substances. Reactive substances can be hypergolic, pyrophoric or water reactive.
   
   • Hypergolics ignite when they come into contact with each other.
   • Pyrophoric substances react in contact with air.
   • Water reactive substances react when they come into contact with water or humid air.

Question 10

4 Disadvantages of quick decontamination?

Answer 10

1. Quick fix only
2. May not remove all contaminants
3. More thorough decontamination will have to follow
4. Damages the environment