Chapter 26 - HAZMAT PPE, DECON, Product control

Question 1

What are the 4 types of basic protective breathing equipment at hazmat?

Answer 1

-SCBA
-Supplied air respirators
-Air-purifying respirators
-Powered air-purifying respirators

Question 2

What two types of SCBA are allowed on scenes with potential hazmat?

Answer 2

-Positive pressure open
-Closed circuit SCBA
(both work of tank air and do not pull air from the atmosphere)

Question 3

Which style protective breathing equipment has a emergency breathing support system?
How long does it last generally?

Answer 3

Supplied air respirators
5,10,15 minutes worth of air

Question 4

They do not supply air from a separate source and they protect only against specific contaminants at or below certain concentrations ? What is it?

Answer 4

APRs (Air-purifying respirators)

Question 5

T or F
APRs can either be full face seal or half face

Answer 5

True

Question 6

Wearing APRs is acceptable when these two criteria are met:

Answer 6

-Atmospheric conditions are completely understood
-At least 19.5% oxygen is present

Question 7

Three letters are used to indicate limitations of particulate removing filters
N - ?
P - ?
R - ?

Answer 7

N- Not resistant to oil
P - Resistant to oil
R - Present when oil or non-oil lubricants are used (oil proof)

Question 8

Which kind of breathing protection equipment is usually used at decon operations?
a. Vapor and gas removing filters
b. Combined respirators
c. Supplied air hoods
d. Powered-air purifying respirators

Answer 8

D. Powered- air purifying respirators (PAPRs)
They offer a greater degree of safety than APRs in case of leaks or face proof seals

Question 9

Where you should you ABSOLUTELY NOT use powered-air purifying respirators?

Answer 9

Explosive or potentially explosive atmospheres
(they are not intrinsically safe)

Question 10

When choosing any sort of PPE for any incident, what should you absolutely understand and know to stay safe?

Answer 10

Your PPE limitations

Question 11

T or F?
Structural fire clothing is a good substitute for chemical protective clothing

Answer 11

False

Question 12

What are the three levels of filtration for an APRs?

Answer 12

95%
99%
99.97%

Question 13

Why are the structural fire protective equipment maybe not adequate for chemical incidents?
Where are the weaknesses on the suit?

Answer 13

When skin contact is potentially hazardous.
Neck, wrists, waist and boot overlap

Question 14

High temperature protective clothing has two main designs, with the descriptions here, name them:
-Permits close approach to fire rescue, fire suppression and property conservation
-Allows person to work in total flame environments for short periods of time (1100 celsius)

Answer 14

• Proximity suits
• Fire - entry suits

Question 15

What could be a few limitations of High temperature protective clothing?

Answer 15

• Enhanced heat stress
• Limits vision
  -Limit mobility
  -Limit communication
  -Bulky
  -Expensive
  -Designated for limited exposure time

Question 16

Standards distinct two separate types of chemical protective clothing, what are they?

Answer 16

Liquid splash-protective
Vapor- protective

Question 17

REMEMBER THIS!!!

Answer 17

NO TYPE OF CHEMICAL PROTECTIVE CLOTHING PROTECTS AGAINST ALL CHEMICAL HAZARDS

Question 18

T or F?
Liquid splash clothing can be encapsulating or non-encapsulating

Answer 18

True

Question 19

What is a limitation both liquid splash protective and vapour protective have?

Answer 19

They trap heat

Question 20

A process that occurs when a chemical passes through a fabric on a molecular level is….

Answer 20

Permeation - Most CPC (chemical protective clothing) have a breakthrough time

Question 21

Describe the main components of Level A protection:

Answer 21

Positive pressure SBCA
Fully encapsulated

Question 22

Describe the main components of Level B protection:

Answer 22

-Positive pressure SCBA
-Hooded chemical resistant clothing that meets NFPA 1992

Question 23

Describe the main components of Level C protection:

Answer 23

-Full or half APR masks
-Hooded chemical resistant clothing

Question 24

Describe the main components of Level D protection:

Answer 24

No atmospheric hazards exist
-Coveralls
-Chemical resistant boots or shoes with a steel toe
-hard hat
-Safety glasses

Question 25

Of these heat emergencies you can suffer while using PPE, which is the most serious?
a. Heat exhaustion
b. Heat stroke
c. Heat rashes
d. Heat cramps

Answer 25

B. heat stroke

Question 26

Before entering any hazardous environment, what should you do with your PPE?

Answer 26

Pre-entry inspection

Question 27

To avoid faster suit degradation, what should you avoid doing during an incident?

Answer 27

Do not kneel or sit on the ground

Question 28

This is a phase of decontamination where significant reduction of the amount surface contamination takes place as quickly as possible

Answer 28

Gross decontamination

Question 29

What are the 4 types of decontamination?

Answer 29

Gross decontamination - reduction of surface contaminants
Emergency decontamination - removing threatening contaminants quick
Technical decontamination - using chemical or physical methods
Mass decontamination - lots of people quickly

Question 30

T or F?
Responders should shut off valves without direction of facility operator

Answer 30

False,
They should not

Question 31

Leak control is often referred to as…

Answer 31

containment

Question 32

Write this in you ERG, corrosive liquid tanks (MC/DOT 312) do NOT have a shutoff valve

Answer 32

page 13 in ERG

Question 33

What are the three application methods for foam?

Answer 33

-Roll-on method: Applying on the ground in front of spill and gently on it
-Back-down application: Applying foam on back surface (wall) and letting it trickle down on spill
-Rain down method: Spray in the air over target

Question 34

What two factors allow responders to measure quality of the foam?

Answer 34

Expansion ratio: Thicker foam blankets take longer to break down
Drainage time: Time for 1/4 of liquid drains from the foam

Question 35

Match the foam to its purpose?
Class A fuel foam - Class B fuel foam

-Ordinary combustibles
-Flammable and combustible liquids

Answer 35

Class A = Ordinary combustible
Class B = Flammable and combustible liquids

Question 36

What are the 4 methods to control liquid spills?

Answer 36

Dam
Dike
Divert
Retain

Question 37

Explain the difference between absorption and adsorption

Answer 37

-Absorption soaks up hazmats and retains
(must be chemically compatible)
- Adsorption has the molecule of the hazardous liquid adhere to the material (it does not swell up)
(organic based materials)

Question 38

Control actions involving spills are generally _____ in nature

Answer 38

Defensive

Question 39

What are the three different types of foam?

Answer 39

Low-expansion
Mid-expansion
High-expansion

Question 40

What are three fire control considerations at a combustible liquids incident?

Answer 40

Vapours
Ignition sources
Extinguishment

Question 41

What three specifications does decontamination at a terrorist incident involve?

Answer 41

• May require procedure change
• May involve a large number of people
• Must be treated as a crime scene

Question 42

What are the three basic principles of decontamination?

Answer 42

Get it off
Keep it off
Contain it