Practice Test Geeks(PC) Plumber Certification Practice Test
← All PC Flashcard Decks

Plumber Safety & Code Compliance 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 Plumber Safety & Code Compliance flashcards as text

  1. Under the IPC, what type of pipe is prohibited from being used for underground installation inside a building for drain, waste, and vent systems?

    Answer: Galvanized steel

    Galvanized steel pipe is not approved for underground DWV use inside buildings because it corrodes rapidly when buried and in contact with waste.

  2. A permit is required to replace a water heater in most jurisdictions. Which of the following work typically does NOT require a plumbing permit?

    Answer: Replacing a faucet washer or cartridge

    Minor repairs such as replacing faucet washers or cartridges are maintenance tasks exempt from permit requirements in most plumbing codes.

  3. What is the primary purpose of a backflow preventer installed on an irrigation system connected to potable water?

    Answer: Prevent contaminated water from flowing back into the drinking supply

    Backflow preventers protect the potable water supply from contamination caused by reverse flow from the irrigation system.

  4. According to OSHA's lockout/tagout standard (29 CFR 1910.147), before servicing a water heater with hazardous energy, what must a plumber do first?

    Answer: Isolate all energy sources and verify zero energy state

    LOTO requires the plumber to isolate all energy sources (gas, electric, water pressure) and verify zero energy state before servicing.

  5. The International Plumbing Code requires that all above-ground DWV piping be supported at intervals not exceeding how many feet for 2-inch horizontal PVC pipe?

    Answer: 4 feet

    The IPC requires horizontal PVC DWV pipe 2 inches and smaller to be supported at maximum 4-foot intervals to prevent sagging and improper drainage slope.

  6. What is the required minimum slope for a 4-inch horizontal drain pipe per the IPC?

    Answer: 1/8 inch per foot

    The IPC requires horizontal drain pipes 4 inches and larger to slope at a minimum of 1/8 inch per foot to maintain self-scouring velocity.

  7. Which personal protective equipment (PPE) is mandatory when soldering or brazing copper pipe with an open flame torch?

    Answer: Safety glasses and leather gloves

    Safety glasses protect against flux splatter and hot solder, while leather gloves protect against burns from hot pipe and torch flame during soldering.