ProBoard Exam

Question 1

Describe the type of assistance provided by CHEMTRAC and the procedure for contacting them.

Answer 1

It provides 24 hour information by phone or fax with data available on more than 350,000 chemicals and has the ability to contact the shipper or manufacturer involved.

By phone

Question 2

What information should be given to CHEMTRAC when requesting hazard and response information?

Answer 2

Name and callback/fax number
Location and nature of problem
Name and ID # of materials involved
Shipper/consingee/point of origin
Carrier name and railcar/truck #
Container type and size
Quantity of material transported/released
Location conditions 
Injuries and exposures
Local Emergency services that have been notified.

Question 3

List two methods for contacting the manufacturer or shipper to obtain hazard and response information.

Answer 3

CHEMTRAC nonemergency number or ChemNet

Question 4

What hazard class are nerve agents?

Answer 4

6.1

Question 5

What hazard class are blister agents?

Answer 5

6.1

Question 6

What hazard classes are blood agents?

Answer 6

Hydrogen Cyanide: 6.1

Cyanogen Chloride : 2.3

Question 7

What hazard class are choking agents?

Answer 7

2.3

Question 8

What hazard class are irritants?

Answer 8

6.1 or 2.3 (pepper spray, mace)

Question 9

What hazard class are biological and toxic agents?

Answer 9

6.1 or 6.2

Question 10

What is a boiling liquid expanding vapor explosion?

Answer 10

When a liquid changes to a gas and the container cannot accommodate the increase in pressure.

Question 11

Define ignition temperature

Answer 11

The minimum temperature required to ignite gas or vapor without an ignition source.

Question 12

What factors determine persistency?

Answer 12

Physical properties
Weather conditions
Method of dissemination
Condition of target

Question 13

What’s miscibility?

Answer 13

The ability of a material to blend uniformly with another substance.

Question 14

What is thermal container stress?

Answer 14

Can be the result of high temperatures that cause a container’s relief valve to activate or cause the container to bulge. However, extremely cold conditions can cause the container to become brittle and create container failure.

Question 15

What is mechanical container stress?

Answer 15

Evident by punctures, gorges, tears, cracks, and dents. Stressors can cause failure of the container is compromised by other stressors.

Question 16

What is chemical container stress?

Answer 16

The result of a reaction between a chemical coming in contact with a container or its contents. May also be the result of a change in the contents of the container alone.

Question 17

What is disintegration?

Answer 17

Container failure due to rust, corrosion, or other forms. The result is a total loss of integrity.

Question 18

What happens to a container with runaway cracks?

Answer 18

Small cracks grow rapidly, encircle the container, and break apart.

Question 19

What happens to containers with closures opening up?

Answer 19

A container that had a rollover that causes the safety valve to break off or any other closures to fail and open up.

Question 20

What are the clues to a CBRNE event?

Answer 20

Similar patient symptoms and signs
People running from scene
Flames or smoke
Rising/hissing sound 
Dead animals/fish/insects

Question 21

What are the ways responders can locate an SDS in an emergency

Answer 21

Shipper or manufacturer
Facility Emergency Response Plans
CHEMTRAC
National law enforcement telecommunications system 
Local emergency planning committee
Internet

Question 22

What identifies an MC-306?

Answer 22

Large oval ends
Underbelly outlets
Rollover/spill rails running entire length

Question 23

What do IMO type 7 tanks carry?

Answer 23

Cryogenic liquids

Question 24

Which pressure container does not have rounded ends?

Answer 24

Ton containers

Question 25

How many chimes do radiological containers have?

Answer 25

Three

Question 26

What incidents should Class B foam be used?

Answer 26

Incidents involving flammable or combustible liquids