BPI Health and Safety 2

Question 1

What is the primary hazard associated with disturbing asbestos-containing materials (ACM) during a home energy audit?

Accepted Answer

Inhalation of airborne asbestos fibers

Answer

Disturbing ACM releases microscopic fibers that, when inhaled, can cause mesothelioma, lung cancer, and asbestosis.

Question 2

When using a blower door to depressurize a home, which combustion appliance presents the greatest backdrafting risk?

Accepted Answer

Naturally drafted gas water heater

Answer

Naturally drafted appliances rely on buoyancy for exhaust and are easily overpowered by house depressurization, causing combustion gases to spill indoors.

Question 3

What does a CO alarm reading of 70 ppm sustained for more than 1–2 hours indicate per UL 2034 standards?

Accepted Answer

Alarm activation threshold requiring occupant evacuation

Answer

UL 2034 requires CO alarms to trigger at 70 ppm sustained for 60–240 minutes, signaling a life-safety hazard requiring immediate evacuation.

Question 4

Which personal protective equipment (PPE) is required when working in a crawlspace with suspected rodent droppings?

Accepted Answer

N95 respirator, gloves, and disposable coveralls

Answer

Rodent droppings can harbor hantavirus; an N95 respirator, nitrile gloves, and disposable coveralls protect against inhalation and contact.

Question 5

What is the maximum allowable CO concentration in ambient air for occupied residential spaces according to ASHRAE guidelines?

Accepted Answer

9 ppm

Answer

ASHRAE and EPA set a 9 ppm 8-hour average standard for indoor CO in occupied residential spaces.

(BPI) Building Performance Institute Certified Practice Test

(BPI) Building Performance Institute Certified Practice Test

BPI Health and Safety 2