BPI Health and Safety 4

Question 1

What level of radon concentration in a home requires EPA-recommended mitigation action?

Accepted Answer

4 pCi/L

Answer

The EPA action level for radon is 4 picocuries per liter (pCi/L); mitigation is recommended for homes at or above this level.

Question 2

Which gas is heavier than air and can accumulate at low points such as basements and crawlspaces, creating an explosion hazard?

Accepted Answer

Propane (LPG)

Answer

Propane has a vapor density greater than 1 (heavier than air) and sinks to low areas, where it can accumulate to explosive concentrations.

Question 3

During a home performance assessment, a client reports persistent condensation on windows and musty odors. What health hazard should the auditor primarily suspect?

Accepted Answer

Mold growth due to excess moisture

Answer

Persistent condensation and musty odors are classic indicators of elevated indoor humidity and active mold growth.

Question 4

What is the recommended method for verifying that an atmospheric combustion appliance has adequate combustion air supply?

Accepted Answer

Perform a worst-case CAZ depressurization test and record the pressure in pascals

Answer

The worst-case CAZ depressurization test quantifies how much negative pressure the combustion appliance zone reaches under maximum competing exhaust conditions.

Question 5

Under OSHA standards, what is the minimum oxygen concentration in a confined space atmosphere that permits entry without supplied-air equipment?

Accepted Answer

19.5%

Answer

OSHA defines oxygen-deficient atmosphere as below 19.5%; entry below this threshold requires supplied-air or self-contained breathing apparatus.

(BPI) Building Performance Institute Certified Practice Test

(BPI) Building Performance Institute Certified Practice Test

BPI Health and Safety 4