CHC MEP Systems in Healthcare Facilities

Question 1

According to ASHRAE 170, what is the minimum number of total air changes per hour (ACH) required for an operating room?

Accepted Answer

20 ACH

Answer

6 ACH

Answer

12 ACH

Answer

30 ACH

Question 2

What type of pressure relationship must an Airborne Infection Isolation (AII) room maintain relative to the adjacent corridor?

Accepted Answer

Negative pressure

Answer

Positive pressure

Answer

Neutral pressure

Answer

Alternating pressure

Question 3

Which ASHRAE standard specifically governs ventilation requirements for healthcare facilities?

Accepted Answer

ASHRAE 170

Answer

ASHRAE 55

Answer

ASHRAE 90.1

Answer

ASHRAE 188

Question 4

What is the minimum negative pressure differential required between an Airborne Infection Isolation room and the adjacent corridor per CDC and ASHRAE 170 guidelines?

Accepted Answer

0.01 inch water gauge

Answer

0.001 inch water gauge

Answer

0.1 inch water gauge

Answer

1.0 inch water gauge

Question 5

What air supply system configuration is required for operating rooms to prevent cross-contamination between spaces?

Accepted Answer

100% outside air single-pass system

Answer

Recirculating system with HEPA filtration

Answer

Variable refrigerant flow (VRF) system

Answer

Fan coil unit with return air

Question 6

Per ASHRAE 170-2017, what is the acceptable relative humidity range for operating rooms?

Accepted Answer

20–60% RH

Answer

30–70% RH

Answer

40–80% RH

Answer

50–70% RH

Question 7

Which filter efficiency is required at the final filtration stage for operating room air supply systems per ASHRAE 170?

Accepted Answer

MERV 17 (HEPA equivalent)

Answer

MERV 7

Answer

MERV 13

Answer

MERV 14