Inspection & Quality Control Flashcards
7 cards from real PC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Inspection & Quality Control flashcards as text
When inspecting a newly installed water meter, what is the inspector checking by looking at the meter's dial or digital display with all fixtures turned off?
Answer: Whether the low-flow indicator is moving, which would indicate a hidden leak
A moving low-flow indicator with all fixtures off reveals a leak somewhere in the system that must be found and repaired.
An inspector discovers that a vent pipe terminates 6 inches above the roof. What code violation does this represent?
Answer: Minimum vent height above the roof is 12 inches in most codes
Most plumbing codes require vent terminals to extend at least 6 to 12 inches above the roof (12 inches per IPC) and additional height near roof openings or windows.
During a fixture final inspection, the inspector finds a lavatory drain has a pop-up stopper that doesn't seal completely. What is the inspector's most likely response?
Answer: Fail it and require adjustment or replacement of the pop-up assembly
A pop-up drain stopper that doesn't seal is a functional deficiency; fixtures must operate as intended to pass final inspection.
A plumber uses 1½-inch pipe for a branch drain serving a kitchen sink. The code requires a minimum of 1½-inch pipe for this fixture. If the inspector finds the pipe is actually 1¼-inch, what action is required?
Answer: Require replacement with 1½-inch minimum pipe
The minimum pipe size for a kitchen sink drain is set by code to handle the fixture's drainage demand; undersized pipe must be replaced.
An inspector is checking a hydronic heating system and notices the expansion tank is waterlogged. What problem does this create?
Answer: Excessive pressure buildup causing the relief valve to discharge repeatedly
A waterlogged expansion tank loses its air cushion, so normal thermal expansion causes pressure spikes that trigger the T&P relief valve unnecessarily.
Which of the following would an inspector note as a violation when reviewing cleanout accessibility in a commercial building?
Answer: A cleanout located inside a locked mechanical room with no key available to the inspector
Cleanouts must be accessible for maintenance and inspection; a cleanout in a locked space without accessible keys fails the accessibility requirement.
What does an inspector verify when checking that a pressure-balancing shower valve is installed?
Answer: That the valve limits hot/cold pressure differential to prevent scalding or thermal shock
Pressure-balancing valves are required in showers to prevent sudden temperature spikes when toilets flush or other fixtures draw cold water, reducing scald risk.