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
, Unit 2 Fasteners, tools and testing
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.