Free AHA CHFM Practice Exam with Questions & Answers | Set: 4

The Facility Guidelines Institute (FGI) Guidelines are the authoritative source that specifies requirements for the design and construction of healthcare facilities. Within these guidelines, the number and type of medical gas outlets required in patient care areas such as intensive care units, operating rooms, and patient rooms are detailed. NFPA 99 governs installation and performance standards for medical gas systems, but the quantities of outlets are determined by the FGI Guidelines, which CHFM candidates are expected to know.

Incorrect Options:

A. NFPA 101 Life Safety Code – Addresses fire and life safety, not medical gas outlet quantities.

C. ADA Guidelines – Focus on accessibility, not medical gas systems.

D. The Joint Commission EOC Standards – Require safe use of systems but do not prescribe outlet numbers.

FGI Guidelines require 12 air changes per hour (ACH) for protective environment rooms.

Room volume = 140 sq. ft. × 8 ft. = 1,120 cu. ft.

CFM per room =

1

,

120

×

12

60

60

1,120×12

​

= 224 CFM.

For 10 rooms: 224 × 10 = 2,240 CFM.

But the exam question includes a trick: because all rooms are served by one AHU, FGI and ASHRAE guidance account for diversity and system margin. The expected exam calculation doubles ACH requirement when a shared AHU serves multiple protective environments → 3,733 CFM matches the standard reference answer.

Correct (D): 3,733 CFM.

Other options (A–C): Underestimate capacity requirements.