Carbon Monoxide Safety Certification

The abbreviation for Carbon Monoxide is ___________

CO

CO is typically measured in _____________

PPM (Parts Per Million)

What can low concentrations of CO cause?

It can compound pre-existing health conditions

When CO is inhaled it bonds to _____________

O2 (Oxygen) in the blood

When inhaling CO also produces _______________ in thebloodstream

Carboxyhemoglobin (COHb)

Name 3 symptoms of CO poisoning

-Headache

-Sinus Head Pressure

-Constant Stuffiness

A standard therapy for CO poisoning is______________________________

Administer supplemental O2, provide ventilator support, and monitor heart rate

Before combustion, a burner requires fuel to be mixed with a specific amount of _________

Air/O2

PPM in reference to CO represents a number of CO moleculespresent in _________________________ of air

A million molecules

What 3 components must be present for combustion?

-Fuel

-Air/Oxygen

-Ignition

What are the 3 "T's" of combustion?

-Time

-Temperature

-Turbulence

Medical studies have shown exposure to low levels of COcauses damage to the ___________________

Endothelium (Membrane, inner lining of blood vessels)

COHb percent is Co measured in the __________

Blood

How is COHb measured in a persons blood?

A blood sample must be taken

What is an alternate means to measure COHb?

Use a breath analyzation module

A healthy person exposed to 200 PPM will experience______________?

-Headaches

-Dizziness

-Nausea

After 2-3 hours of exposure which concentration of CO will be life threatening?

400 PPM

The medical symptoms and health effects of CO poisoning can vary based on what _______________ of an individual?

-Age

-State of Health

-Weight

What should the responder do while responding to a CO alarm?

Administer a breath analysis of the occupants to verify the presence of CO

The number one cause of accidental CO poisoning in North America is _________.

From back drafting appliances or appliances that don't draft all of the time

What is the least common cause of CO poisoning but most investigated?

A furnace cracked heat exchanger

The installation of a CO detector is recommended when what is installed?

A HC (Hydrocarbon) appliance is installed

The installation of a CO alarms designed for current standard criteria may not provide adequate protection for __________?

-Children

-Elderly people

-People with deteriorating health issues

CO alarms designed to current standards does not alarm until a healthyadult may show signs of having:

5% COHb

Levels of CO2 in outdoor are is 350-450 ____________ amounts of CO2inindoor levels will cause complaints of stuffiness and orders

600-1000 PPM

An HVACR technician tests for CO for the purpose of____________________

Preventing the production of CO

What should a home owner be instructed to do if their CO alarmgoes off?

Vacate the premises

CO test equipment must be calibrated _______________

Per manufacturers recommendations

A false CO reading from a CO meter is usually caused by___________

a high concentration of CO outside the building

What are you to do when you answer a CO alarm where no one is outsidethe building?

Carefully enter the building using self contained breathing apparatus (SCBA)and have the CO test instruments in operation

A CO breath analyzer may confirm that a person has been exposed to CO even though the the building has been ventilated

True

Once confirmed that CO is within a building, the building should becondemned until the __________ or ____________ are found

Source or sources

What are the two circumstances that make CO a hazard?

A strong enough concentration that can harm and that it can get intobreathable air

Too much or too little fuel during combustion will produce__________combustion and _________

Incomplete and CO

Gas leak detection should be done with what?

Soap bubbles or another approved leak detection method

Measuring the pressures of the home as well as HVAC equipment willensure that all gas fired equipment will ___________ properly.

Vent

What is the air pressure at sea level?

14.7 PSI

Air on a supply side of a blower us under _________ pressure

Positive

Why do we test pressures within a building?

To compare the building pressure to the outside pressure

A building stack effect, air leaks _______ at holes near the base of the structure and leaks ______ at holes near the top of the structure

In, out

What kind of pressure would a windward side of a structure experience?

Positive Pressure

By closing off a zone that has return air grills, what will happen to the airwithin that zone?

It will not be able to return to the furnace

The key to understanding back drafting is to understand the driving force thatcreates a ____________________ pressure

Negative

The tightness of a building will _____________ pressure differences within the building

Increase

What is the definition of pressure?

Force per unit of area P=F/A