CHFM Building Utility Systems 3

Question 1

A healthcare facility manager discovers that steam condensate is causing water hammer in the return lines. What is the most likely cause?

Accepted Answer

Failed or waterlogged steam traps causing condensate buildup

Answer

Oversized steam traps allowing live steam to pass

Answer

Excessive boiler feed water temperature

Answer

Undersized steam supply valves restricting flow

Question 2

Which ASHRAE standard governs ventilation and indoor air quality requirements for healthcare facilities?

Accepted Answer

ASHRAE 170

Answer

ASHRAE 62.1

Answer

ASHRAE 90.1

Answer

ASHRAE 55

Question 3

What type of water treatment is used in healthcare cooling towers primarily to control Legionella bacteria?

Accepted Answer

Biocide addition and blowdown control of condenser water

Answer

Ultraviolet irradiation of chilled water supply

Answer

Softening with ion exchange resins

Answer

Carbon filtration of makeup water

Question 4

In a hospital's electrical system, what is the maximum allowable transfer time for the life safety branch under NFPA 99?

Accepted Answer

10 seconds

Answer

3 seconds

Answer

30 seconds

Answer

60 seconds

Question 5

A facility manager is evaluating domestic hot water system performance. What temperature should hot water be maintained at in storage to prevent Legionella growth?

Accepted Answer

140°F (60°C)

Answer

120°F (49°C)

Answer

130°F (54°C)

Answer

150°F (66°C)

Question 6

Which component in a variable frequency drive (VFD) converts AC power to DC before inverting it to variable-frequency AC?

Accepted Answer

The rectifier section

Answer

The inverter bridge

Answer

The DC link capacitor bank

Answer

The pulse-width modulation controller

Question 7

What does a 'K-factor' represent in a fire sprinkler system?

Accepted Answer

The discharge coefficient relating flow rate to pressure

Answer

The heat activation sensitivity of the sprinkler head

Answer

The minimum required spacing between sprinkler heads

Answer

The maximum ceiling height for a given head type