CHFM Building Utility Systems 5

Question 1

What is the role of a 'zone valve' in a medical gas system according to NFPA 99?

Accepted Answer

Isolate gas supply to a specific area without affecting adjacent zones

Answer

Zone valves allow staff to shut off medical gas to a specific area during emergencies or maintenance without disrupting gas supply to adjacent zones.

Question 2

A facility manager is reviewing a chiller plant's coefficient of performance (COP). If a chiller produces 400 tons of cooling while consuming 400 kW of electrical power, what is the COP?

Accepted Answer

5.27

Answer

COP = cooling output (kW) ÷ power input (kW); 400 tons × 3.517 kW/ton = 1,407 kW output ÷ 400 kW input = COP of approximately 5.27.

Question 3

Which type of air filtration is required in areas with immunocompromised patients, such as bone marrow transplant units, per ASHRAE 170?

Accepted Answer

HEPA filtration at 99.97% efficiency

Answer

ASHRAE 170 requires HEPA filtration (99.97% at 0.3 microns) for protective environment rooms serving immunocompromised patients to prevent fungal and bacterial infections.

Question 4

In a hospital's storm water management system, what is the primary purpose of a detention basin?

Accepted Answer

Temporarily hold runoff to reduce peak discharge rate to municipal systems

Answer

A detention basin temporarily stores storm water runoff and releases it slowly to reduce peak flow rates and prevent flooding of downstream municipal infrastructure.

Question 5

What is the purpose of a reduced pressure zone (RPZ) backflow preventer in a healthcare facility's plumbing system?

Accepted Answer

Provide the highest level of protection against backflow into the potable supply

Answer

An RPZ backflow preventer uses two independently operating check valves with a relief valve between them to provide maximum protection against backflow contamination of the potable water supply.

CHFM - Certified Healthcare Facility Manager Practice Test

CHFM - Certified Healthcare Facility Manager Practice Test

CHFM Building Utility Systems 5