Download Unit 2 Fasteners, tools and testing instruments 88 complete solutions. and more Exams Industrial Engineering in PDF only on Docsity!
instruments 88 complete solutions.
Unit 2 Fasteners, tools and testing
instruments 88 complete solutions.
In the gas industry what are the three main types of material that are fastened to or from piping and equipment? - ANSWER Wood, Concrete and Steel.
Why must expansion or vibration be taken into consideration when fastening or supporting equipment?
- ANSWER To ensure a secure installation and carried out safely and securely.
How should screws be stored? - ANSWER Store all fasteners in a clean and dry environment.
What may be required to be done before a large lag screw is fastened to a wooden member? - ANSWER A pilot hole may be needed for larger sizes of lag bolts.
What are the two common thread patterns found on bolts used by the gas technician/fitter? - ANSWER Natural Course(NC) National Fine(NF)
Natural coarse being more commonly used
What is used in place of bolts when a large amount of adjustment is required? - ANSWER Threaded Rod
What type of bolt can be used when fastening to hallow block walls? - ANSWER Spring wing(butterfly), Tumble and Riveted
List three common configurations of pipe hangers? - ANSWER Grappling Bar, Threaded Rod/Rod Coupling
And Coach Screw And Machine-Threaded Rod
Which type of support is commonly used by the gas technician/fitter to install vertical piping? - ANSWER Riser clamps
instruments 88 complete solutions.
List 3 types of solderless electrical fasteners. - ANSWER Twist on Caps/Marrettes, Mechanical, eye, spade and splicing sleeve.
Lag bolts are not actually bolts they are____________used to fasten___________to wooden members. - ANSWER Screws/Brackets.
Usually the length of a bolt is measured from______________head to the end. - ANSWER Underneath.
A bolt with a ____________ head is measured overall - ANSWER Countersunk.
Inset anchors and lead and plastic shields are also known as________________plugs. - ANSWER Rawl plugs
The most common bolt thread used in the gas industry is national___________________ - ANSWER Course(NC)
When the use of manufactured bolt is difficult
Because of limited adjustment parameters, threaded or_____________ can be cut to the required length - ANSWER Ready Rod.
Give two reasons why proper maintenance and storage of hand tools is important? - ANSWER Expensive tools may be stolen, along with damaged tools
List three types of screwdriver tips commonly used by the gas technician/fitter. - ANSWER Straight blade, Robertson, Allen keys and Phillips
Why are sheet metal snips not suitable for cutting wire? - ANSWER It nicks the blades.
Which type of wrench has both an open end and box end? - ANSWER Combination wrench.
instruments 88 complete solutions.
Good for working in close quarters because as little as a 1/2 turn can be taken in one stroke. Head opening usually has 6 or 12 notches points - ANSWER Box Wrench
Used to shape and smooth parts by hand. - ANSWER File.
Used to attach metal fittings to flexible hose. - ANSWER Crippling Tools
Used primary to cut metal. Also used for shaping such things as sheet metal and strap hangers. Blades may be rigid or flexible. - ANSWER Snips
Used to make clean, square cuts on copper, brass, aluminum, and thin-walled conduit. Usually have a fold-away reamer attached - ANSWER Tubing cutters
Used to cut external threads on pipe fittings. - ANSWER Had Threader
Why are electric power equipped with
3-prong electrical plugs? - ANSWER Too protect the user against shock if the insulation should fail or there is a short circuit
Which type of power tool is used to insert
Fasteners into concrete or steel? - ANSWER Heavy-duty Electric Drills
Where should the operator stand when firing a power-actuated tool? - ANSWER Stand behind the tool when firing it
List two common voltages used to power portable electric drills. - ANSWER 110v - 115v
Which type of electric drill is designed for drilling into concrete? - ANSWER Rotary hammer electric drill
instruments 88 complete solutions.
Which tool can be used to give a drill bit a start and to keep it from wandering? - ANSWER Center-punch materials to be drilled to give the bit a start.
What should be done before inserting or removing drill bits from the chuck of a power drill? - ANSWER Disconnect the power cord
Which type of blade is used with the
Chop saw to cut steel pipe or rod? - ANSWER Abrasives to cut steel pipe or rods
How are blades used in reciprocating saws identified for use? - ANSWER They are colour coded according to their use
Name two common types of stationary grinders. - ANSWER Bench grinder/pedestal grinder.
Which type of grinder is commonly used to grind bevels and clean weld spatters off pipes - ANSWER Angle grinders
Is a power-actuated tool that uses the captive piston principal considered a high-velocity or low-velocity tool? - ANSWER Low velocity
Electric power tools are generally equipped
With a three-pronged grounding plug. This protects the tool user from receiving a shock from a_______________or a wiring________________? - ANSWER Short circuit or a wiring insulator.
Power tools should not be operated in a gaseous or________________atmosphere - ANSWER Explosive.
Power tools should not be operated when standing on a______________surface. - ANSWER Wet.
Power-activated tools require one to take a course of instruction designed by the manufacturer before being qualified to operate the tool? - ANSWER True
instruments 88 complete solutions.
Which type of measuring device is most often used by the gas technician/fitter? - ANSWER The pocket- type or spring loaded tape measure
Which type of square has an adjustable head? - ANSWER Combination squares
What is a drill gauge used for? - ANSWER Measure the diameter of drill bits
What is the purpose of a flue has analyst? - ANSWER Used to adjust appliances for optimum combustion efficiency or to verify safe operation.
List three types of flue gas analyzes - ANSWER Continuous sampling, tube, and liquid.
How many different gases is each detector tube designed to test for? - ANSWER Each tube contains a different chemical
And each one is designed to test for a specific type of gas.
What is the advantage of using a liquid-type flue gas analyzer compared to the tube type. - ANSWER Liquid over tube analyzers is that many flue samples can be tested without having to change chemicals
Which type of gas flue gas analyzer allows you to adjust the burner while watching the results on a monitor? - ANSWER Continuous sampling electronic analyzer.
Which type of liquid manometer dose the gas technician/fitter normally use? - ANSWER U-tube nanometers (liquid)
Electronic Manometers
Flue gases must be analyzed to check______________efficiency and the__________of toxic gases. - ANSWER Combustion and the level
Name 3 types of temperature measuring devices. - ANSWER Bimetal dial thermometer
instruments 88 complete solutions.
Spirit-filled thermometer
Digital hand-held thermometer.
What elements appear in flue gas analysts? - ANSWER Carbon dioxide (CO2), Oxygen (O2)
Carbon monoxide (CO)
Measure the pressure and temperature of gases? - ANSWER Pressure gauges.
Measure the difference in "draw" and "no draw flow pressures. - ANSWER Manometers
Tests for incomplete combustion - ANSWER Combustible gas indicator
Provide information to assist in adjusting burners? - ANSWER Flue gas analyzer
Which type of electrical meter uses a scale and pointer? - ANSWER Analogue ammeter
What do volt meters measure? - ANSWER Voltmeters measure the difference of electrical potential between two points
Which type of electrical meter measures the current flowing through a circuit? - ANSWER Ammeters measure the current flowing through a circuit.
In what units is the resistance of an electrical circuit measured? - ANSWER Resistance is measured in ohms
Which type of electrical meter combines a voltmeter, ohmmeter, and ammeter? - ANSWER Multimeters
The area of a rectangle is expressed in_____________ units? - ANSWER Square units.
