Pipefitter Nccer V4 study guide latest updated

OSHA approved anchorage point - ANSWER-when working from a suspended scaffold, wear a safety belt that is securely tied to the 3 1/2 - ANSWER-a toe board must be what minimum height to comply with OSHA safety standards for scaffolding? 30 PSI - ANSWER-What maximum Air pressure may be used for cleaning? 18.21 in. - ANSWER-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" - ANSWER-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. - ANSWER-Convert 7 3/8" to decimal equivalent 255 Sq.Ft - ANSWER-what is the area of a rectangle that is 25'-6" long and 10'-0" wide? ( A= W x L ) 40 Sq.FT - ANSWER-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" - ANSWER-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 - ANSWER-The decimal of 56in. is 401.1 - ANSWER-A tank holding 3,000 Gal. of water contains of many . of water? ( one Gal. equals 0.1337 cu. ft) .25 - ANSWER-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 - ANSWER-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 - ANSWER-ladders use with scaffolding must extend above the landing from a minimum distance of Machine Bolt - ANSWER-What can be used for a shackle pin as long as the thread patterns match? vertical lifting - ANSWER-Chain hoist are primarily designed for use a double wrap on the chocker to prevent the chocker from sliding on the pipe - ANSWER-A pipe will be lift with wire rope slings. Which of the following techniques should be used? 1 1/16in - ANSWER-What is the layout length of a 1 in. 3,000 pound threaded tee? vertical - ANSWER-A three legged pipe jack can be adjusted tapers 1/16 in. per in. - ANSWER-the NPT pipe thread three to four turns - ANSWER-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 - ANSWER-a pipe machine is used to 4'- 7 7/15" - ANSWER-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 - ANSWER-Short lengths of pipe, threaded on both ends and used to make connections between fittings , are called every day - ANSWER-an excavation must be inspected a minimum of swedge - ANSWER-A fitting used to join female ends of threaded pipe of different sizes is referred to as a a sump pump - ANSWER-A pump that can be submerged into a liquid in order to remove that liquid is called sloping - ANSWER-Employees working in excavations can be protected from cave-ins by cutting the excavation walls to the soil's angle of repose. This method is known as clean the male and female end of ductile before interlocking - ANSWER-what is the first step of interlocking two joints of iron pipe? chain hoist or chain fall - ANSWER-What is the most commonly used light lifting device? Stap Wrench - ANSWER-Which of the following tools is used to install a 2" threaded stainless steel pipe in a fitting Tee bolt - ANSWER-What kind of bolt is used in a cast iron mechanical joint flange? one quarter inch on the drawing equals one foot of actual size - ANSWER-on a blueprint, a note that says 1/2" = 1' means a plan view drawing - ANSWER-a top down view of the structure being erected is found on pipe diameter - ANSWER-All of the following drawing dimensions are used to determine the overall length of run of a pipe except an ordinate line - ANSWER-a line drawn along the surface of the pipe at division points that serves as a guide for cutting and marking contours is known as 1'5" - ANSWER-the missing measurement for dimenstion is thaper on end - ANSWER-what does the abbreviation T.O.E stand for? isometric - ANSWER-what drawing gives an overall view of the operational aspects of the end procest Nondemostrated Evaluation - ANSWER-NDE , when used in connection with materials , is an abbreviation for Orthographic - ANSWER-Which of the following drawing types represents a three dimensional view of a line of pipe with the horizontal lines drawn at 30 degree angles? acetylene is unstable above this pressure - ANSWER-one inch plate is to be cut. The acetylene regulator on the cutting rig should not be adjusted over 15 PSI, becasue 5 1/8" inches - ANSWER-A six inch 90 degree " Saddle on " for a 12 inch header is to be fabricated. How far apart will the ordinate lines for this layout be? the root face on the bevel will be about as thick as a dime - ANSWER-pipefitters have just finish preparing the end of the pipe for butt welding. The put a " Dime" edge on the bevel. This means that Left-hand thread for acetylene use only - ANSWER-A grooved nut on an oxyacetylene rig indicates adds flexibility to the fitting - ANSWER-Socket weld joints have a gap between the end of the pipe and the bottom of the socket. lateral length - ANSWER-What is the pat that a 45 degree pipe takes to get from one center line to another center line ring joint - ANSWER-Which of the following flanges is best suited for high pressure and high temperature service 1-1/2 times the diameter - ANSWER-what is the formula for finding end to center dimensions on a long radius butt weld elbow 5'-7 7/8" - ANSWER-What is the center to center measurement of the travel between two 1-1/2 threaded 45 degree ELL's with an offset of 4 feet? Thermal Expansion - ANSWER-The expansion of pipe that is caused by an increased in temperature is called a pipe support installed at a 90 degree turn in the vertical direction of the main line - ANSWER-What is a Dummy Leg bottom of the beam along the beam centerline - ANSWER-Beam attachment used to support pipe hangers are typically welded to the put the travel stops in the spring - ANSWER-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 - ANSWER-An eccentric dummy support welded on the back of a long radius 90 degree elbow is laid out carbon steel - ANSWER-drawing call for B-7 studs to be used on flanges. These studs are made of isometric drawing - ANSWER-Where can information about the service pressure rating, temperature limit, maximum PR pressure, and class of a piping system be located? raised face - ANSWER-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 - ANSWER-which of the following statements is true about a 6", 300# full face flange used on a typical valve? 5 1/2" - ANSWER-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 - ANSWER-Which of the following statement is true about the procedures for thightening the bolts on the flange? expansion - ANSWER-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 - ANSWER-What will a rapture disc do when it reaches a certain operating pressure or temperature? Horizontal - ANSWER-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 - ANSWER-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 - ANSWER-Which of the following is stamped or print on all piping? throttling - ANSWER-A needle valve is particularly suitable for which of the following applications the flow direction that is usually stamped or cast into the valve - ANSWER-Which of the following items indicates the direction of flow through a glove valve? Blocked open - ANSWER-During hydrotesting, gate valves within a piping system are normally start and stop flow - ANSWER-the plug valve is used to glove valve - ANSWER-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 - ANSWER-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 - ANSWER-How is the proper size gasket determined for used with a set of flanges? 8 - ANSWER-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 - ANSWER-Which of the following should be done before performing the hydrostatic test stem - ANSWER-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 - ANSWER-which statement is correct about the effect of water temperature on hydro-testing results 1.375 - ANSWER-what is the decimal of 1/2" + 3/5" / 0.500"? 12" - ANSWER-The domical size of a pipe and its outside diameter will be different up to what maximum diameter? an oxy acetylene torch - ANSWER-thermal beveling of a pipe in preparation for welding requires the used of socket welded - ANSWER-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 - ANSWER-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" - ANSWER-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 - ANSWER-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" - ANSWER-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 - ANS