Download Piping and Equipment Identification and more Exams Nursing in PDF only on Docsity! 1 | P a g e PIPEFITTER NCCER CERTIFICATION EXAM 2024-2025 WITH CORRECT QUESTIONS AND ANSWERS | TESTED QUESTIONS AND SOLUTIONS | GRADED A+| The rigger MUST carefully inspect the chain hoist. A) Daily B) Before each use C) Monthly D) After a malfunction B Information referring to design requirements and materials for pipe, flanges, valves, and related items to be used is found in. A) Isometric drawings B) Plot plans C) P & IDs D) Specifications A All piping and piping components are identified by what international identification system? A) API B) ASTM C) ASME D) WPS B 2 | P a g e What is the highest safe standing step or level from the top of a step ladder ( A-Frame) A) 1 B) 2 C) 3 D) 4 B A plug valve is used to. A) Start and stop flow B) Regulate flow C) Prevent reverse flow D) Divert flow A Ladders should be inspected A) Daily B) Weekly C) Monthly D) Before each use D What does WPS stand for A) Water pneumatic steam B) Welding process system C) Welding procedure specification D) Water pipe system C What does this symbol refer to? A) Concentric reducer B) Eccentric reducer C) Check valve D) P-Trap B The illustrated piece of equipment is a. A) Compressor B) Welding machine C) Generator / light tower D) Water pump A The illustrated piece of equipment is a. A) Welding machine 5 | P a g e B) Commercial Bracket C) Riser Extension D) Adjustable Ring D The illustrated piece of equipment is a. A) Boom lift B) Fork lift C) Scissor lift D) Cherry picker A Convert 1/4 to its decimal equivalent. A) .01 B) .25 C) 0.4 D) 0.5 B Piping that is field-routed to a pump must be supported A) Off the pump suction B) Diagonally C) Independently D) Off the pump discharge C What is used when lighting a cutting torch ? A) Striker B) Cigarette lighter C) Match D) Any open flame A Where is specific information needed to install piping and associated items found ? A) Reliability network B) Owner of the company C) Material Manufacturer D) Standards and Specifications D Damaged and broken tools should be A) Used if possible B) Kept for backup 6 | P a g e C) Taken out of Service D) Used for minor tasks C What is the ID of 10'' schedule 80 piping. A) 9 3/16 B) 9 5/16 C) 9 9/16 D) 10 1/16 C The two steps in making up threaded joints are the hand engagement and A) Machine makeup B) Wrench makeup C) Driver makeup B Which of the following actions should be taken before a hydrostatic test is performed ? A) Remove pressure relief valves B) Leave control mechanisms in place C) Leave orifice flanges in place D) Remove blinds a A 4-inch lateral riser is to be fabricated for a 6-inch pipe. How many ordinate lines will be needed to lay out this cut ? A) 32 B) 16 C) 8 D) 4 C Who is qualified to repair power tools. A) Journey person B) Competent Technician C) Electrician D) Tool crib attendant B Which of the following plastic pipes is NOT joined by solvent welding ? A) PVC B) HDPE C) CPVC D) ABS 7 | P a g e B Material placed in the bottom of the trench under the pipe to provide support is called. A) Heave B) Sub trench C) Trench load D) Bedding D Socket weld joints have a gap between the end of the pipe and the bottom of the socket. What is the purpose of this gap ? A) Makes assembly easier B) Reduces flexibility at the fitting C) Prevents weld cracking D) Provides fit-up adjustment C When are rupture discs installed into a pipeline? A) Before flushing and testing of pipeline B) After installation of the pipeline C) Before start-up of the system D) After start-up of the system C Chain come-alongs are PRIMARILY designed for? A) Lifting in close quarters B) Vertical lifting C) Lifting in any location D) Horizontal lifting B Which of the following types of copper tubing has the thickest wall A) K B) L C) M D) Acr A What is the MINIMUM grade of chain that may be used for rigging loads overhead? A) 5 B) 6 C) 7 D) 8 D 10 | P a g e What is the travel on a rolling offset that has a Run of 18'', a roll 24'', and a height of 12'' A) 29 3/8 B) 32 5/16 C) 34 15/16 D) 38 9/16 C Which of the following is a quick opening valve? A) Globe B) Needle C) Butterfly D) Gate C Find the lowest common denominator for 1/8 and 1/2 A) 3 B) 5 C) 7 D) 8 D A piping drawing that shows both the side view and the top view of a piping system is A) Elevation B) Isometric C) Plan D) Double-line B The movement of pipe that is caused by an increase in temperature is called A) Hot spring B) Thermal expansion C) Heat swelling D) Pipe stretching B A cold spring relieves A) Cavitation B) Water hammer C) Thermal expansion D) Tension C 11 | P a g e How many feet apart must oxygen and fuel gas cylinders be stored, unless there is a 5 ft high, 30 minute burn rated wall between them? A) 5 B) 10 C) 15 D) 20 D When performing a line break, first? A) Break the bolts down & away from you B) Loosen each bolt a little at a time C) Break the bolts closest to you D) Loosen bolts in a cross over pattern A A pipe nipple is any length of threaded pipe that is shorter than A) 12'' B) 13'' C) 14'' D) 15'' A What is the reference angle if the hypotenuse of a right triangle is 36'' and its adjacent side is 14''. ( pipefitters blue book) A) 79 degrees B) 67 degrees C) 23 degrees D) 21 degrees B In piping systems, ball joints are installed to allow for? A) Expansion and Contraction C) Pressure Relief B) Chemical Absorption D) Open & Closing A All of the following drawing dimensions are used to determine the overall length of Run of a pipe EXCEPT. A) Pipe diameter B) Center-to-center C) Face-to-face D) Center-to-face 12 | P a g e A Ground fault circuit interrupters SHOULD be located A) Closest to the power tool B) At the source of power C) On individual extension cords D) On cords with only 3 prong connections D What is the most important hazardous condition in or around an excavation? A) Falls B) Water C) Cave-In D) Vibration C What happens when a misaligned pipe flange is bolted up to an aligned pump's suction flange ? A) The speed of the motor will increase. B) The pump and motor will be in alignment. C) The speed of the motor will decrease. D) The pump and motor will be out of alignment. D A pretest field inspection includes all of the following EXCEPT the A) Piping system matches the drawings B) Piping components match the specifications C) Proper gaskets are Installed D) Vent at the low point of the system D In relation to welding HAZ stands for A) Health activated zone B) Heat affected zone C) Hazard communications D) High altitude zone B Expansion joints allow A) The pipe line to be easily dismantled B) For linear expansion and contraction of pipe lines C) Easy access to flange connections D) Access to unclog the line B 15 | P a g e A) Extend the outriggers B) Raise the boom C) Extend the boom sections D) Retract the boom sections C What is the length of pipe required to fabricate a 8'' diameter schedule 40 pipe spool with one 90 degree butt weld elbow on one end, and one 45 degree butt weld elbow on the other end, with a center-to-center measurement of 72'' (assume a 1/8 welder gap) A) 58 3/4 B) 54 3/4 C) 52 1/4 D) 46 1/4 B All of the following types of pipe are thermoplastic EXCEPT. A) Polyvinyl Chloride (PVC) B) Fiberglass C) Polyethylene D) Acrylonitrile - Butadiene- Styrene B Which of the following is a classification of cast iron pipe? A) Schedule 40 B) Schedule 80 C) XH D) XS C Which of the following parts of a layout will NOT be the same for all three lines in an equally spread offset? A) Starting point B) Run C) Set D) Travel A Flat Face Flanges require which type of gasket? A) Spiral wound B) Full face C) Strip D) Jacketed B 16 | P a g e What is a flexible link seal used for? A) Seal the end of a pipe B) Seal a pipe in a pipe sleeve C) Seal the end of a valve D) Seal the drain in a floor drain B A vertical pipe filled with 10'' of water has a head pressure of A) 4.25 psi B) 4.33 psi C) 4.38 psi D) 4.5 psi B What is the formula for finding the volume of a cylinder? A) Pi x r squared x h B) Pi x radius x height C) L x W x H D) B x H x D A What MINIMUM number of bolts can be removed from an 8-bolt flange when a slip blind is inserted for hydrotesting? A) 2 B) 3 C) 4 D) 5 C Globe valve : A) Prevents reversal of flow through a piping system B) Has a globe - shaped handle C) Relieves pressure D) Is better than a gate valve for throttling flow D In relationship to the diameter of the eye bolt, how deep should the tapped holes for eye bolts be? A) 1/2 times B) 1 time C) 1 1/2 times D) 2 times C 17 | P a g e When fabricating a spooled piece of pipe which type of drawing would normally be used A) Plan view C) P & ID B) Isometric D) Orthographic B What is the product of 7.60 x 0.12 A) 0.912 B) 1.192 C) 1.912 D) 9.912 A To signal that you want to use the main hoist A) Extend your arm and raise your thumb B) Tap your elbow C) Tap your hard hat D) Clasp your hands C How much would a 40' - 6''length of 12'' diameter standard weight pipe weigh? A) 2009 lbs B) 2013 lbs C) 2650 lbs D) 2655 lbs A What would be the long segment measurement of a SIX-PIECE, 90 degree mitered elbow that has a radius of 24'' A) 3 3/16 B) 7 5/8 C) 7 13/16 D) 15 1/2 B Performance, reliability, and quality of components are assured by use of A) A qualified journeyman B) Standards and Codes C) A qualified engineer D) Reputable manufactures B In-line specialty ball joints solve all the following problems EXCEPT. A) Alignment B) Vibration 20 | P a g e C) Reduce friction in pipe supports D) Provide corrosion resistance of pipe supports D The three MAJOR trig functions are. A) Set, Run, Travel B) Tangent, Cosine, and Sine C) Cotangent, Hypotenuse, and Side Adjacent D) Tangent, Cotangent, and Sine B The working load limit of hoisting equipment is based on a straight, vertical hoist line and. A) A side load up to 5 degrees B) The load being freely suspended C) The load resting on the ground B Which drawing gives enough information to be able to fabricate a pipe run? A) Plot B) Oblique C) P & ID D) Isometric D Which of the following tools should be used to install a 2'' threaded chrome plated pipe in a fitting? A) Strap wrench B) Chain wrench C) 24'' standard pipe wrench D) 36'' standard pipe wrench A OSHA approved anchorage point when working from a suspended scaffold, wear a safety belt that is securely tied to the 3 1/2 a toe board must be what minimum height to comply with OSHA safety standards for scaffolding? 30 PSI What maximum Air pressure may be used for cleaning? 18.21 in. 21 | P a g e A tank has a diameter of 58ft, the circumference of the tank is 182.23ft, one degree of diameter equals 6.07 in. Three degrees of diameter will equal? 6'-8 5/8" A piece of 2" pipe is being cut to run between two 90 Degree threaded fittings, the center to center measurement of the fittings is 7'-2 1/2" What is the cut length of the pipe? 7.3750 in. Convert 7 3/8" to decimal equivalent 255 Sq.Ft what is the area of a rectangle that is 25'-6" long and 10'-0" wide? ( A= W x L ) 40 Sq.FT what is the sq. footage of the surface area of a steel plate measuring 120 in. long by 48 in. wide? 119'-3 1/2" A 14" SCH carbon steel pipe is being installed in a pipe rack. The center line elevation of the pipe will be 120' -3 1/2". what will the bottom of pipe elevation be? 4.67 ft The decimal of 56in. is 401.1 A tank holding 3,000 Gal. of water contains of many cu.ft. of water? ( one Gal. equals 0.1337 cu. ft) .25 How much is 3" in hundredths of a foot? Use two rigging sling that are double wrapped and chocked one chocker is placed about 5ft from each end of the bundle which of the following methods could be used to rig a 20 foot long bundle of six rebar rods that will be pick up by a small crane? three feet ladders use with scaffolding must extend above the landing from a minimum distance of Machine Bolt What can be used for a shackle pin as long as the thread patterns match? 22 | P a g e vertical lifting Chain hoist are primarily designed for use a double wrap on the chocker to prevent the chocker from sliding on the pipe A pipe will be lift with wire rope slings. Which of the following techniques should be used? 1 1/16in What is the layout length of a 1 in. 3,000 pound threaded tee? vertical A three legged pipe jack can be adjusted tapers 1/16 in. per in. the NPT pipe thread three to four turns A pipe has been threaded with a rigid 535 machine and now the threads are to be checked with a fitting. How many turns are normally sufficient to check the threads? cut and thread pipe a maximum of 2" in diameter a pipe machine is used to 4'- 7 7/15" A new 1 1/2" threaded line being run needs to change elevations from the centerline elevation of 101.3' at column L -6 to the new centerline elevation of 96.4' at column L-5. Use 90 Degrees, 3,000 LBs. Threaded fittings, and calculate the thread engagement with the pipefitters handbook. what cut length of 1 1/2" pipe is needed? nipples Short lengths of pipe, threaded on both ends and used to make connections between fittings , are called every day an excavation must be inspected a minimum of swedge A fitting used to join female ends of threaded pipe of different sizes is referred to as a a sump pump A pump that can be submerged into a liquid in order to remove that liquid is called sloping 25 | P a g e A section of pipe that has spring can hangers is to be hydrotested. what preparation, if any, must be made for the spring can hangers before starting the hydrotest? on the inside of the outside radius of the elbow An eccentric dummy support welded on the back of a long radius 90 degree elbow is laid out carbon steel drawing call for B-7 studs to be used on flanges. These studs are made of isometric drawing Where can information about the service pressure rating, temperature limit, maximum PR pressure, and class of a piping system be located? raised face which of the following is the most common flange facing used with steel flanges? all the bolts must be removed from the flange to remove the gasket which of the following statements is true about a 6", 300# full face flange used on a typical valve? 5 1/2" What is the takeout for a 6" x 3" concentric reducer? Tight, begin tightening each bolt to the final required tightness using the proper torque pattern Which of the following statement is true about the procedures for thightening the bolts on the flange? expansion Loops in the piping system that absorbs the movement of the line caused by expansion and contraction are known as what type of loop? Corrode What will a rapture disc do when it reaches a certain operating pressure or temperature? Horizontal A valve is being rigged for installation in a vertical line the valve should be rigged so that the flange faces of the valve are mark a small diamond shape centered on the weld location on the south side of the flange The millwrights are having problems to line up a pump. They checked and found that the discharge pipe flange needs to be adjusted a little the north side of the flange is found to be high. Which of the following should be done at this point? heat number Which of the following is stamped or print on all piping? 26 | P a g e throttling A needle valve is particularly suitable for which of the following applications the flow direction that is usually stamped or cast into the valve Which of the following items indicates the direction of flow through a glove valve? Blocked open During hydrotesting, gate valves within a piping system are normally start and stop flow the plug valve is used to glove valve The most common valve used to regulate flow is the make sure all piping is supported independently of the pump so that the pipe flange puts pressure on the pump flanges A spool piece is to be made to fit a pump that has been moved. The pipe will be field route to the flanges of the pump. which of the following must be done to make this installation work properly? check the size and rating stamped on the flanges How is the proper size gasket determined for used with a set of flanges? 8 A 4" lateral riser for a 6" pipe is to be fabricated. How many ordinates lines will be used to layout this cut? remove pressure relief valves Which of the following should be done before performing the hydrostatic test stem A preventive maintenance schedule calls for a specific valve to be lubricated. Grease is generally applied to which part of the valve? temperature will directly affect a test which statement is correct about the effect of water temperature on hydro-testing results 1.375 what is the decimal of 1/2" + 3/5" / 0.500"? 12" The domical size of a pipe and its outside diameter will be different up to what maximum diameter? 27 | P a g e an oxy acetylene torch thermal beveling of a pipe in preparation for welding requires the used of socket welded after a slip on flange slips over the end of the pipe. How is it double welded to the pipe at the neck and at the face of the flange? wrap adding machine paper around the pipe about 1-1/2 times. mark the paper where it overlaps square cut the paper at the mark. Fold the paper three times. Make a small angle cut at the corners to make notches a 14" 90 degree saddle is to be made for a 18" heater. The regular wrap around is not available. Which procedure or statement below is correct about making and using a temporary wraparound to layout the ordinate lines? 6" What is the take off for a 4" x 3" LR reducing 90 degree ELL? Have at least half the bolts in the flange. Drop the gasket in the middle of the flange. Place all of the bolts in the flange and then tighten the bolts. As the bolts are tightened the gasket will center itself An installer is working on a 8" carbon steel, 300 LBs raised face weld neck flange. How should the installer put a flexitallic gasket in this type flange? 8" Given a 45 degree lateral is to be made on a standard weight 6" riser on a 10" diameter heater using a wraparound marked in eighths. How far from the end of the pipe should the wraparound line be drawn? Use an oxyacetylene torch, cut the hole with bevel sides slanted toward the middle of the pipe. This will make it easier to fit the saddle and to give a head start on beveling the hole on the heater pipe for welding An installer is fabricating a 6" carbon steel lateral on an 8" carbon steel pipe heater. How will the installer cut out the hole in the heater to fit the saddle into the heater? erection sequence the most important thing to consider when erecting a spool or piece of pipe is the The wider and more narrow the diamond, the more the pipe will move, so the diamond shape should be centered between the welds which of the following statements is true about diamond heating a pipe? the pump must be final aligned before the pipe is fitted to the discharge flange A spool piece is to be made to the discharge flange of a pump, which statement below is true about this task? 30 | P a g e Blue Sign General Instructions/Information Red/White Sign Danger/Hazardous Yellow Sign Caution Cross-bracing Braces (metal or wood) placed diagonally from the bottom of one rail to the top of another rail that add support to a structure Excavation Any man-made cut, cavity, trench, or depression in an earth surface, formed by removing earth. It can be made for anything from basements to highways. Guarded Enclosed, fenced, covered, or otherwise protected by barriers, rails, covers, or platforms to prevent dangerous contact Hand line A line attached to a tool or object so a worker can pull it up after climbing a ladder or scaffold Lanyard A short section of rope or strap, one end of which is attached to a worker's safety harness and the other to a strong anchor point above the work area Maximum intended load The total weight of all people, equipment, tools, materials, and loads that a ladder can hold at one time Midrail Mid-level, horizontal board required on all open sides of scaffolds and platforms that are more than 14 inches (35 cm) from the face of the structure and more than 10 feet (3 m) above the ground. It is placed halfway between the toe-board and the top rail Planked Having pieces of material 2 inches (5 cm) thick or greater and 6 inches (15 cm) wide or greater used as flooring, decking, or scaffold decks Six-foot rule A rule stating that platforms or work surfaces with unprotected sides or edges that are 6 feet (≈2m) or higher than the ground or level below it require fall protection 31 | P a g e Toeboard A vertical barrier at floor level attached along exposed edges of a platform, runway, or ramp to prevent materials and people from falling Top rail A top-level, horizontal board required on all open sides of scaffolding and platforms that are more than 14 inches (36 cm) from the face of the structure and more than 10 feet (3 m) above the ground Adjustable wrench A smooth-jawed wrench with an adjustable jaw used for turning nuts and bolts. Often referred to as a Crescent wrench due to brand recognition ball peen hammer A hammer having a flat face that is used to strike cold chisels and punches. The rounded end (the peen) is used to bend and shape soft metal Bell-faced hammer A claw hammer with a slightly rounded, or convex, face. Bevel To cut on a slant at an angle that is not a right angle (90 degrees). The angle or inclination of a line or surface that meets another at any angle but 90 degrees. box end wrench A wrench, usually double ended, that has a closed socket that fits over the head of a bolt Cats paw A straight steel rod with a curved claw at one end that is used to pull nails that have been driven flush with the surface of the wood or slightly below it. chisel A metal tool with a sharpened, beveled edge used to cut and shape wood, stone, or metal. Chisel bar A tool with a claw at each end, commonly used to pull nails. claw hammer A hammer with a flat striking face. the other end of the head is curved and divided into two claws to remove nails. Combination wrench A wrench with an open end and a closed end. 32 | P a g e Dowel A pin, usually round, that fits into a corresponding hole to fasten or align two pieces. Fastener A device such as a bolt, clasp, hook, or lock used to attach or secure one material to another. Flats The straight sides or jaws of a wrench opening. Also, the sides on a nut or bolt head. Foot-pounds Unit of measure used to describe the amount of pressure exerted (torque) to tighten a large object. Hex key wrench A hexagonal steel bar that is bent to form a right angel. Often referred to as an Allen wrench. Inch-pounds Unit of measure used to describe the amount of pressure exerted (torque) to tighten a small object. joint The point where members or the edges of members are joined. The types of welding joints are butt joint, corner joint, T-joint Level Perfectly horizontal; completely flat; also, a tool used to determine if an object is level. Nail puller A tool used to remove nails. Newton meter A measure of torque or moment equal to the force of one Newton applied to a lever one meter long. Open-end wrench A non-adjustable wrench with a fixed opening at each end that is typically different, allowing it to be used to fit two different bolt sizes Peening The process of bending, shaping, or cutting material by striking it with a tool. pipe wrench A wrench form gripping and turning a pipe or pipe-shaped object. It tightens when turned when turned in one direction Pliers 35 | P a g e A bit or drill used to set the head of a screw at or below the surface of the material. Direct Current (DC) And electric power supply where the current flows in one direction only. This power is supplied by batteries and transformer-rectifiers that change AC power to this supply. Forstner bit A bit designed for use in wood or similar soft material. The design allows it to drill a flat-bottom blind hole in material. Ground Fault Circuit Interrupter (GFCI) A circuit breaker designed to protect people from electric shock and to protect equipment from damage by interrupting the flow of electricity if a circuit fault occurs. Ground fault protection Protection against short circuits; a safety device cuts power off as soon as it senses any imbalance between incoming and outgoing current Masonry Bit A drill bit with a carbide tip designed to penetrate materials such as stone, brick, or concrete. revolutions per minute (rpm) The rotational speed of a motor or shaft, based on the number of times it rotates each minute. Shank The smooth part of a drill bit that fits into the chuck. Trigger lock A small lever, switch, or part that can be used to activate a locking catch or spring to hold a power tool trigger in the operating mode without finger pressure. Arbor The end of a circular saw shaft where the blade is mounted. Kerf The channel created by a saw blade passing through the material, which is equal to the width of the blade teeth. Reciprocating Moving backward and forward on a straight line. Abrasive A substance, such as sandpaper, that is used to wear away material. 36 | P a g e Grit A granular, sand-like material used to make sandpaper and similar materials abrasive. The grit number indicates the number of abrasive granules in a standard size (per inch or cm). The higher the grit number, the more particles in a given area, indicating a finer abrasive material. Ring test A method of testing the condition of a grinding wheel. The wheel is mounted on a rod and tapped. A clear ring means the wheel is in good condition; a dull thud means the wheel is in poor condition and should be disposed of. Block and tackle A simple rope-and-pulley system used to lift loads. Bridle A configuration using two or more slings to connect a load to a single hoist hook. Bull ring A single ring used to attach multiple slings to a hoist hook. Core Center support member of a wire rope around which the strands are laid. Hitch The rigging configuration by which a sling connects the load to the hoist hook. The three basic types of hitches are vertical, choker, and basket. Hoist A device that applies a mechanical force for lifting or lowering a load. Lifting clamp A device used to move loads such as steel plates or concrete panels without the use of slings. Load The total amount of what is being lifted, including all slings, hitches, and hardware. Load control The safe and efficient practice of load manipulation, using proper communication and handling techniques. Load stress The strain or tension applied on the rigging by the weight of the suspended load. Master link 37 | P a g e The main connection fitting for chain slings. One-rope lay The lengthwise distance it takes for one strand of a wire rope to make one complete turn around the core. Plane A surface in which a straight line joining two points lies wholly within that surface. Rated capacity The maximum load weight a sling or piece of hardware or equipment can hold or lift. Also referred to as the working load limit (WLL). Sling legs The parts of the sling that reach from the attachment device around the object being lifted. Sling reach A measure taken from the master link of the sling, where it bears weight, to either the end fitting of the sling or the lowest point on the basket. Splice To join together. Strand A group of wires wound, or laid, around a center wire, or core. Strands are laid around a supporting core to form a rope. Tag line Rope that runs from the load to the ground. Riggers hold on to tag lines to keep a load from swinging or spinning during the lift. Tattle-tail Cord attached to the strands of an endless loop sling. It protrudes from the jacket. A tattle-tail is used to determine if an endless sling has been stretched or overloaded. Threaded shank A connecting end of a fastener, such as a bolt, with a series of spiral grooves cut into it. The grooves are designed to mate with grooves cut into another object in order to join them together. Unstranding Describes wire rope strands that have become untwisted. This weakens the rope and makes it easier to break. Warning yarn