HAZ MAT 4 CARBON MONOXIDE

Question 1

Which is not a property of CO?

• colorless
• odorless
• tasteless
• non-irritating
• non-toxic gas

Answer 1

CO IS TOXIC

*methane (natural gas) is non-toxic.

Question 2

CO is a _____gas with an auto ignition temperature of _____Degrees F.

Answer 2

• Flammable

* 1128 degrees F

Question 3

LEL and UEL of CO are?

Answer 3

LEL 12.5%

UEL 74%

Question 4

T OR F

CO IS slightly lighter than air.

Answer 4

TRUE (.968)

“HAHA MICE”
(gases lighter than air)

H- HYDROGEN
A- ACETYLENE
H- HYDROGEN CYANIDE
A- AMMONIA
M- METHANE
I- ILLUMINATING GAS
C- CO
E- ETHYLENE

• NOTE: Hydrogen Cyanide= Blood Agent
• smells like Burn Almonds

Question 5

CO displaces 02 in the bloodstream and asphyxiates victims.

Once in the body it combines with hemoglobin. CO is about ____times more attracted to hemoglobin than O2

Answer 5

210 Times more attracted.

The deadly combination of CO and hemoglobin is called carboxyhemoglobin.

Question 6

Over _____parts of oxygen are required to replace one part of CO.

Answer 6

200 parts

Question 7

OSHA established maximum working level for CO is ____ppm over an _____hr period in the general workplace.

Answer 7

35 ppm over 8 hr period

Question 8

If any individuals exhibit symptoms of CO poisoning at an operation, what should be done?

Answer 8

• immediately evacuate area
• ventilate
• request E.MS.
• IC will request utility company response

Question 9

Where should the initial reading be taken at a CO response?

Answer 9

At the front door of the premises

Question 10

What 4 situations justify the IC requesting utility company response?

Answer 10

1) CO level OVER 9ppm (10 or higher ppm) is recorded by a meter
2) Units on the scene shut off a gas appliance
3) an individual(s) exhibiting symptoms of CO poisoning
4) IC feels a response by the utility company is warranted

Question 11

What constitutes a CO “incident”?

Answer 11

Readings of 9PPM OR LESS

NO OCCUPANTS SYMPTOMATIC

Question 12

Define a CO “emergency”

Answer 12

Meter readings GREATER THAN 9 PPM OR

OCCUPANTS ARE SYMPTOMATIC

Question 13

T OR F

SCBA’s shall be worn at ALL CO incidents and used at all CO Emergencies.

Answer 13

FALSE

shall be worn at ALL CO INVESTIGATIONS*

Question 14

T OR F

A radio equipped team of at least 2 firefighters shall conduct a search of the premises at CO investigations.

Answer 14

TRUE

Question 15

CO meter picks up 9PPM at an investigation. What do you do?

Answer 15

1-9 PPM

1) inform occupant that our meter has not detected an elevated CO level
2) Attempt to reset detector
3) Inform occupants that if the detector activates again to call 911 again.

Question 16

CO meter reading of 99 PPM on the top floor of an Old Law Tenement. What should you do?

Answer 16

*GREATER THAN 9PPM BUT LESS THAN 100PPM:

• shall not be considered normal
• inform occupants “potentially dangerous” level of CO
• RECOMMEND that all persons leave the top floor (affected area)
• begin ventilation
• shut down a faulty appliance if it is determined to be responsible for the elevated CO levels.
• reduce the CO level to 9PPM or less, the premises may be reoccupied.
• Inform the occupants of actions taken

Question 17

When is evacuation of the affected area at a CO emergency necessary.

Answer 17

100PPM or Greater

• inform occupants that we have detected a “potentially lethal” level of CO.
• begin evacuation of the affected area. (not entire building unless whole building has these readings)
• ventilate
• area may be reoccupied once the source of the CO has been mitigated and levels are reduced to 9PPM or LESS.

Question 18

Whats the code for a low-battery in a CO detector?

Answer 18

10-38-1

Question 19

You have a hit on the CO meter in an apartment, 9PPM. What code are you recommending to the Chief?

Answer 19

10-38-2

CO incident. 1-9PPM

Question 20

While responding to a run for an odor of smoke in an H-type you notice a reading of 200PPM on your CO meter as you walk into the lobby. There is no CO detector present in the area. The smoke turned out to be a defective oil burner. The Chief decided to use 1 and 1 for this CO investigation. What code would be transmitted?

Answer 20

10-18 for a 10-32, 10-38-4
(No detector Activation. CO Incident OR Emergency (specify). No detector present in affected area, detector present in affected area, but did not activate.
*1 engine, 1 truck= 10-18
*Oil Burner = 10-32

Question 21

If any individuals exhibit symptoms at CO poisoning at an operation, what should be done?

Answer 21

• immediately evacuate area
• ventilate
• request E.MS.
• request utility company response

Question 22

You respond to a CO run in a private dwelling. After an investigation you only get 7PPM reading on your meter, constituting an Incident. One of the residents is complaining of a headache and nausea. What code should you transmit and what should you do?

Answer 22

10-38-3
(Emergency, symptoms trump readings. If one person is sick it is an emergency)

• immediately evacuate are
• ventilate
• request EMS
• IC will request utility company response