Children's Health | Plumbing System Troubleshooting 301

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Question 1 of 8

1. Question
The hospital’s entire domestic water system is operating outside of normal heating parameters. If all of the hot water heaters are functioning properly, which of the following devices or machines should be investigated first to identify the root cause of the temperature issue?
- heating water mixing valve
- deaerator
- steam boiler
- heat exchanger
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Question 2 of 8

2. Question
Which of the following outcomes is most likely to occur from pump failure within a heating water return system?
- longer than normal hot water travel time to plumbing fixtures
- loss of hot water reheat to the facility
- insufficient water pressure to reach top floors
- manual fire pump operation to maintain adequate system pressure
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Question 3 of 8

3. Question
In order to perform a repair, a plumbing contractor turned off domestic cold water to an entire zone. Which of the following steps are required after the water is turned back on?
- Turn on all affected plumbing fixtures until air is completely bled from the water lines.
- Chemically treat the condenser water system
- Cycle the chillers on and off.
- Shut off return water pumps for at least 10 minutes.
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Question 4 of 8

4. Question
No water is coming to the building. Which of the following procedures should be followed as the first course of action in this scenario?
- (1) call the City to inquire about an outage, (2) inspect the incoming main water connections and valves positions, (3) inspect the backflow preventers, and (4) open the bypass for supply water to the campus
- (1) inform administration of the failure, (2) implement emergency preparedness plan, (3) ensure all valves are open, and (4) call the City to inquire about an outage
- (1) activate appropriate emergency response protocol, (2) call the City to inquire about an outage, (3) determine if the outage is limited only to the domestic water feed or if fire protection water and landscaping feeds are additionally affected, and (4) inspect the backflow preventers
- (1) confirm if the outage is limited only to the domestic water feed or if fire protection water and landscaping feeds are additionally affected, (2) If fire protection is also affected, then implement an ILSM and notify the fire department, (3) inform administration of the failure, (4) implement the emergency preparedness plan, and (5) call the City to inquire about an outage
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Question 5 of 8

5. Question
At what point is the city called to help with issues related to main sewer systems and storm sewer systems outside of the building?
- When the backup or problem crosses over from the Children’s Health property side to the city side, call the city for help. If uncertain of the boundaries, consult a site plan.
- When water backs up out of man-holes and storm drains, call the city and notify them of the issue.
- If gray water is found in the storm sewer system, call the city for help. If uncertain of the storm sewer system location, consult a piping diagram.
- Notify the city if the sewer or storm system issue is cited during an accreditation survey as a conditional finding.
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Question 6 of 8

6. Question
A newly installed commercial coffee maker is connected, and the water is turned on, but there is no flow to the machine. What is the most likely cause?
- The check valve is installed backwards.
- The coffee maker is not turned on.
- The machine is connected to a hot water line.
- There is an air lock located within the line.
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Question 7 of 8

7. Question
A domestic hot water loss can’t be repaired immediately, but a cross-connector from another system is available. What steps are necessary to put the other system on line to minimally impact the service?
- Turn on the cross-connector supply return and pump first. Then, shut off the supply and return valves on the hot water heater that is down.
- Shut off the supply and return valves on the hot water heater that is down. Then, turn on the cross-connector supply return and pump.
- Turn the power supply off to the domestic water heater. Then, valve off the domestic hot water supply.
- Valve off the domestic hot water supply. Then, turn off the power supply to the domestic water heater.
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Question 8 of 8

8. Question
A certain area in the kitchen has extremely cold water entering from the cold water side of the faucet. What is likely causing this issue?
- A chilled water line is mixing into the domestic water – most likely from a water-cooled, walk-in refrigerator.
- The fountain machine in the kitchen has failed and is supplying additional cold water to the nearby fixtures.
- The stem on the chilled water line has failed and needs to be replaced.
- There is no backflow preventer on the ice machine.
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Children’s Health | Plumbing System Troubleshooting 301

Children’s Health | Plumbing System Troubleshooting 301

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