Plumbing Basics: Copper Fitting Preparation
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Questions and Answers

What is one of the steps to properly prep a copper fitting?

  • Clean inside of fitting (correct)
  • Apply paint to the fitting
  • Heat the fitting with a blowtorch
  • Submerge the fitting in water

    • What kind of permit is typically required for grinding work in a plant?

  • Hot work permit (correct)
  • Cold work permit
  • Electrical permit
  • General work permit

    • What schedule of pipe is required to join a threaded coupling to two pieces of 4-inch pipe?

  • Schedule 40 (correct)
  • Schedule 20
  • Schedule 10
  • Schedule 80

    • What is the appropriate tool to use for cutting pipe in a trench?

    <p>4 wheel cutter</p> Signup and view all the answers

    What is the field performance of a fire pump at its rated conditions?

    <p>150% capacity at 65% head</p> Signup and view all the answers

    What is the frequency for hydrostatic testing of an ABC extinguisher?

    <p>12 years</p> Signup and view all the answers

    What is the shape of a Class B fire extinguisher?

    <p>Red square</p> Signup and view all the answers

    What power tool is commonly used for installing post-installed anchors?

    <p>Hammer drill</p> Signup and view all the answers

    If an air compressor is cycling on and off, what should you do?

    <p>Drain compressor tank through the lowest cock</p> Signup and view all the answers

    What size pipe is typically used for entering a cold space?

    <p>30&quot; inside enclosure</p> Signup and view all the answers

    What is the standard size for a fire boat connection?

    <p>6 inches</p> Signup and view all the answers

    What size is a class 2 hose valve?

    <p>1-1/2&quot;</p> Signup and view all the answers

    What is the recommended slope for a branch line in a freezer?

    <p>1/2&quot; per 10 feet</p> Signup and view all the answers

    If the dry system intermediate check valve is defective and you test the system through the alarm test, what happens?

    <p>It trips</p> Signup and view all the answers

    When you are flowing a 2000 gpm fire pump, what should you do first?

    <p>Select nozzles</p> Signup and view all the answers

    How do you tell when your hard hat expires?

    <p>Stamp on hard hat</p> Signup and view all the answers

    How many bolts and nuts, and what size are required for a 6" OSNY installation?

    <p>16 3/4&quot; nuts and bolts</p> Signup and view all the answers

    What is the spacing between pilot line detectors inside a cooling tower?

    <p>8 feet</p> Signup and view all the answers

    If a pilot line detector that uses fixed temperature is 6 inches beside an I-beam that is 12 inches deep and 8 inches wide, what are the rules regarding the maximum distance between pilot line detectors?

    <p>The maximum distance between pilot line detectors is determined by the temperature profile.</p> Signup and view all the answers

    How often should you inspect a sealed control valve?

    <p>Weekly</p> Signup and view all the answers

    How often should control valves be checked according to Napa 13?

    <p>Monthly</p> Signup and view all the answers

    What is the flow rate in gallons per minute required for flushing an 8" pipe?

    <p>46800</p> Signup and view all the answers

    What is the standard pressure for a hydrostatic test for underground plumbing?

    <p>200 psi +/- 5 psi</p> Signup and view all the answers

    What is the maximum support capacity of a 3 screw ceiling flange with 1/2" lags?

    <p>Supports up to 6&quot;</p> Signup and view all the answers

    What is the maximum distance between a 4-way brace?

    <p>25 feet</p> Signup and view all the answers

    What is the recommended spacing for CLVC hangers?

    <p>6 foot 6 inches</p> Signup and view all the answers

    How should a pilot tube be used in plumbing applications?

    <p>1/2&quot; diameter away</p> Signup and view all the answers

    A standpipe only serves a portion of the building; what is required to indicate this?

    <p>Signage stating the portion it serves</p> Signup and view all the answers

    How should you clean a pipe for end treatment?

    <p>Remove burrs and fins</p> Signup and view all the answers

    What do you do to prep a grooved pipe for installation?

    <p>Grind burrs outside and inside from the end of the pipe</p> Signup and view all the answers

    How often should dry sprinkler systems be tested?

    <p>10 years</p> Signup and view all the answers

    What is the standard duration for sprinkler testing?

    <p>50 years + 10 years after</p> Signup and view all the answers

    How far apart can ground face unions be?

    <p>5 feet away from each other</p> Signup and view all the answers

    What type of valve can be within 5 feet of fire pump suction?

    <p>Listed OS&amp;Y valve</p> Signup and view all the answers

    What is the correct sequence for a property owner to shut down the system?

    <p>Notify the AHJ, call the fire department if required, notify monitoring</p> Signup and view all the answers

    What is the maximum distance that a PIV (Post Indicator Valve) must be installed above grade?

    <p>48&quot;</p> Signup and view all the answers

    Where is the inspector's test located?

    <p>Downstream of alarm valve</p> Signup and view all the answers

    A detector has a ceiling temperature of 90°F. What is it classified as?

    <p>Ordinary</p> Signup and view all the answers

    How many stock sprinklers are needed for 1200 heads?

    <p>24 stock</p> Signup and view all the answers

    What protective covering can be used for copper fittings?

    <p>Cellophane 0.003&quot; or thin paper bag</p> Signup and view all the answers

    What is the minimum diameter of PVC pipe commonly used for entry into a building?

    <p>4&quot;</p> Signup and view all the answers

    Solder joints in exposed wet pipe systems are?

    <p>Permitted to be installed in light hazard</p> Signup and view all the answers

    Multiple drains of sizes 1-1/4", 1-1/2", 1-1/4", and 1-1/4" are tied into a common drain. What is the size of the main drain?

    <p>2&quot;</p> Signup and view all the answers

    Is supervision required on preaction systems with more than 20 heads?

    <p>Yes, it is required.</p> Signup and view all the answers

    Where should a quick opening device (QOD) be installed?

    <p>As close as possible to the valve</p> Signup and view all the answers

    A placard on a system riser will identify which of the following?

    <p>Manufacturer type, brand of antifreeze solution used, and the volume of antifreeze used in the system</p> Signup and view all the answers

    What does antifreeze with a backflow require?

    <p>An expansion chamber</p> Signup and view all the answers

    What is required for drains draining outside?

    <p>4' of pipe to exterior wall</p> Signup and view all the answers

    An ordinary head is installed with 6' of a mounted heater. How do you correct this installation?

    <p>Install high temp</p> Signup and view all the answers

    If a sprinkler head is painted, what should you do?

    <p>Remove and replace with a listed sprinkler head</p> Signup and view all the answers

    What is the maximum distance allowed between residential plumbing fixtures?

    <p>8 feet</p> Signup and view all the answers

    An obstruction is 5'4" away from a side wall. How far above the obstruction can the side wall be mounted?

    <p>In between 5' and 5'6&quot; - 2&quot; above obstruction</p> Signup and view all the answers

    What is the coverage area of a CMSA head in noncombustible construction?

    <p>130 sqft and 12' spacing</p> Signup and view all the answers

    What is required for 25 in rack sprinklers that are fed off of an overhead system?

    <p>A listed control valve</p> Signup and view all the answers

    You are replacing uprights with pendents; what is the maximum size nipple you can use?

    <p>4&quot;</p> Signup and view all the answers

    How far above the ground can post indicator valves be installed?

    <p>32-40 inches</p> Signup and view all the answers

    What auxiliary drain size is required on a wet system of 3 gallons?

    <p>1/2&quot;</p> Signup and view all the answers

    What auxiliary drain is required on a 60-gallon wet system?

    <p>1&quot; piped to an accessible location</p> Signup and view all the answers

    What is the maximum pipe size for which toggle hangers are permitted to be used?

    <p>1-1/2&quot;</p> Signup and view all the answers

    What is the correct method to calculate the leakage of a 660ft pipe with a diameter of 6"?

    <p>Underground leakage test: $660 * 6&quot; * \sqrt{200psi} / 148000$ multiplied by 2</p> Signup and view all the answers

    What is the acceptance test pressure for a water pressure tank with a normal operating pressure of 175 psi?

    <p>225 psi</p> Signup and view all the answers

    What kind of wrench do you use to install heads?

    <p>Sprinkler wrench</p> Signup and view all the answers

    What is the rating of a 6500lb sling?

    <p>65,000lbs</p> Signup and view all the answers

    What is the recommended angle of a pipe end for welding?

    <p>30 degrees</p> Signup and view all the answers

    What is the recommended testing frequency for a 1-1/2" hose valve?

    <p>3 years</p> Signup and view all the answers

    What is required for outdoor scaffolding?

    <p>Mud sills</p> Signup and view all the answers

    What should you do if you encounter a downed power line in the area?

    <p>Secure area and notify supervisor</p> Signup and view all the answers

    What is an unsupported length for a 1" copper fitting?

    <p>36&quot; long</p> Signup and view all the answers

    What is the maximum time for an audible alarm to go off?

    <p>5 minutes</p> Signup and view all the answers

    What is the time for the audible alarm to go off in a marine system?

    <p>30 secs</p> Signup and view all the answers

    Where is the hydraulic data plate found?

    <p>At system riser</p> Signup and view all the answers

    As a sprinkler fitter teaching your apprentice a new skill, what should you do?

    <p>Observe it? Demonstrate it?</p> Signup and view all the answers

    What size hole is required for a 2" pipe subject to earthquake conditions?

    <p>4&quot;</p> Signup and view all the answers

    You are late to the site, who do you call first?

    <p>General Contractor (GC)</p> Signup and view all the answers

    What is the coverage area of a maximum sprinkler head?

    <p>400 sqft</p> Signup and view all the answers

    What size is the discharge pipe for a 2000-gallon pump?

    <p>10''</p> Signup and view all the answers

    How to properly operate a drum drip?

    <p>Shut upper valve, open lower, close lower, open upper</p> Signup and view all the answers

    What is the best method for joining CPVC pipes?

    <p>Solvent cement</p> Signup and view all the answers

    What is the proper method of marking a hole on a pipe?

    <p>Use a center punch to mark</p> Signup and view all the answers

    Which NFPA standard is used for high expansion foam?

    <p>NFPA 11</p> Signup and view all the answers

    What must be done prior to installing CO2 pipe?

    <p>Clean inside with solvent to remove oil and debris</p> Signup and view all the answers

    If the ball drip is leaking, what is the likely cause?

    <p>Service check valve</p> Signup and view all the answers

    What is the first step to fix a fire pump?

    <p>Isolate power</p> Signup and view all the answers

    How do you store acetylene bottles?

    <p>Secured upright, bottle off, regulator off</p> Signup and view all the answers

    How are deluge systems designed?

    <p>Hydraulic calc</p> Signup and view all the answers

    Given a load of 5000 lb per square foot, what is the correct formula to determine the height of the tank?

    <p>5000 divided by 12, divided by another 12, divided by 0.433</p> Signup and view all the answers

    When should a fire department connection (FDC) be omitted?

    <p>Single story not exceeding 1800 sqft</p> Signup and view all the answers

    What is the minimum size drain for a 10" pipe?

    <p>2&quot;</p> Signup and view all the answers

    What pump shall be permitted to maintain system pressure?

    <p>Jockey pump</p> Signup and view all the answers

    What is installed on a ground suction tank to prevent air from getting into the fire pump?

    <p>Vortex plate installed on the storage tank outlet</p> Signup and view all the answers

    What are supervisions on a dry pipe system?

    <p>Low pressure and control valve tamper</p> Signup and view all the answers

    What type of system is a paddle type water alarm installed on?

    <p>Wet system</p> Signup and view all the answers

    What type of sprinkler requires testing after 10 years?

    <p>Dry pendents</p> Signup and view all the answers

    When should antifreeze be tested?

    <p>Annual</p> Signup and view all the answers

    When sprinkler pipe passes through an unheated room, what is required?

    <p>Listed heat tracing that is supervised</p> Signup and view all the answers

    How often should locked control valves be inspected?

    <p>Inspected monthly</p> Signup and view all the answers

    What should be left inside the sprinkler head box?

    <p>A sprinkler wrench for each head</p> Signup and view all the answers

    What is the maximum size of pipe where labeling is not required?

    <p>2 feet</p> Signup and view all the answers

    What extinguisher is used to protect against charged equipment?

    <p>Class C extinguishers</p> Signup and view all the answers

    Multiple auxiliary drain tie in, what size is your drain?

    <p>1&quot;</p> Signup and view all the answers

    What is the bend radius of a 6" Schedule 40 pipe with an angle of 180 degrees?

    <p>7'-10 1/4&quot;</p> Signup and view all the answers

    What do you do first before starting a job in a confined space?

    <p>Hazard assessment</p> Signup and view all the answers

    If you are grooving a 4" fitting but need to groove an 8" fitting next, what do you need to change out?

    <p>The grooving wheel</p> Signup and view all the answers

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