Portable Power and Air Tools, and Explosive Actuated Tools Flashcards
(42 cards)
When using a power tool when should you use a ground fault interrupter circuit (GFCI)?
When there is possibility of damage to your extension chord or when using the tool in damp locations.
Where should the guard be positioned on a handheld grinder?
Between the grinding disc and the operator to protect against sparks and fragments.
How are hammer drill bits or concrete and masonry drill bits different from regular drill bits?
They have a carbide tip that is strong enough to take the scraping and hammering action of the drill.
Is it safe to carry a portable grinder by the power chord?
No.
Is it safe to use standard sockets with electric impact wrenches?
No.
If a power drill is larger does it operate at lower rpms and higher torque?
Yes.
Can you use conventional drills with a hammer drill?
Yes, as long as you can switch off the hammer action.
Do most cordless drills have torque control?
Yes.
Does prolonged use of power or air tools cause carpal tunnel syndrome?
Yes.
Is it safe to run an impact wrench with a universal joint and socket attached?
No, because it may throw the attachments off.
In an explosive actuated tool, what is the power load?
The loaded cartridge. It provides the energy to drive the fastener.
A power load with a crimped end should only be used in what velocity of tool?
Low velocity.
How is power load strength identified?
A numbering system form 1 to 6 indicates power, with 1 being the weakest.
The colour of the box, and on the end of the load, also indicates power load.
Why should fasteners or other metal objects not be carried in the same pocket as power loads?
They may set off, causing serious injury or death.
Why is adequate ventilation required when operating explosive actuated tools?
To prevent the ingestion of lead.
What is the most common fastener for most practices?
Drive pins.
What type of fastener is comprised of a shank that is driven into the base material and a threaded portion to which an object can be attached with a washer and nut?
Threaded studs.
Why must you never overtighten a nut on a threaded stud?
It could pull out the stud.
What type of fastener is used to mount a bracket, fixture or clip?
Drive pin assemblies.
By what dimension are light and heavy duty fasteners categorized?
The diameter of the shank.
Under 3/16-inch is light duty.
Over 3/16-inch is heavy duty.
What are unsuitable types of base materials for driving explosive fasteners into?
- Hard - can deflect off.
- Brittle - cracks or shatters.
- Soft - passes completely through.
How does using the fastener as a center punch allow you to test the material for hardness?
If the fastener becomes blunted than the material is too hard. If not, carry on with testing brittleness and softness.
To determine the suitability of a base material, use a fastener as a center punch struck by a single hammer blow. If the material cracks or shatters, should you fasten to the material?
No, the material is too brittle.
To determine the suitability of a base material, use a fastener as a center punch struck by a single hammer blow. If the fastener penetrates easily, should you fasten to the material?
No, the material is too soft.
