20 HAND AND PORTABLE POWER TOOLS

20 HAND AND PORTABLE POWER TOOLS
QUIZ 1 (20 POINTS TOTAL)

 True/False (6 points)
1. A claw hammer should be used to strike a steel chisel.
 a. true
b. false

2. If an employee brings his own tools to work they do not need to be inspected by the company.
a. true
b. false

3. When metal tools break during normal use the causes are usually related to the tool’s quality.
a. true
b. false

4. It is possible to redress tools with chips or mushroomed striking surfaces.
a. true
b. false

5. When using a hacksaw, apply pressure on the forward stroke only.
a. true
b. false

 6. A wood chisel can double as a pry or wedge.
a. true
b. false


Multiple Choice (6 points)
7. Companies should consider use of less noisy models of tools or other noise controls when noise levels exceed _____.
a. 50 dBA
b. 60 dBA
c. 75 dBA
d. 90 dBA

 8. If it is not practical for a company to have a central tool control area, who should be responsible for inspecting tools?
a. employees
b. supervisor
c. management
d. safety and health professional 

9. Which of the following woods is preferred for handles of hand tools used for striking?
a. hickory
b. ash
c. maple
d. all of the above 
e. a and b only

10. The _____ is probably the most commonly used and abused tool.
a. screwdriver
b. hammer
c. chisel
d. hatchet

 11. _____ of the proper size are designed for striking chisels and punches.
a. Sledge hammers
b. Ball peen hammers
c. Riveting and setting hammers
d. Common hammers

12. Most disabling hand tool injuries are caused by _____.
a. chisels b. hatchets
c. knives
d. saws


Short Answer (7 points)
 13. To determine if tools should be changed, what factors should you consider?
        Material state. cabling

14. Demonstrate an understanding of the personal risks involving hand and portable power tools by listing some of the many accidents and disabilities that can occur when using damaged tools.
      It is a great idea

15. Name at least four questions that should be on a hand tool analysis checklist.
       filo, picaduras, mushrooming, wear, metal fatigue .

16. What general features should be checked during a portable electric tool inspection?
      Bare wires are observed?
      Is the wire coating free of cuts, abrasions and other damage is found?
      Is the plug is in good condition? (For example, the body is not cracked or bending the pins.)
      Are there repairs with tape or other non-standard joints in the cable?
      Is intact outer shell of the tool?

17. Name three types of tool boxes. How should employees carry tools?
      wood, metal, plastic.

18. What are the basic rules involving the proper use of hammers?
       Heads crushed, cracked or burrs, mangos cracked or coated wire.

19. Most unintentional incidents involving hand and portable power tools can be eliminated by following simple safety practices. What are these six practices?
      Protection glasses
      Cut resistant gloves
      Safety shoes
      Ear plugs
      Face shields
      Protective Clothing

Short Essay (1 point)
20. The company you work at has a central tool control with a single employee to issue tools. What are the benefits of such a system? What is a tool control attendant responsible for, and how does she help promote safety?
      Advantages: the tool will be in optimum condition for manipulation and do not have greater risks.
        
      An assistant tool control is in charge of verifying the state, the quality of the tool, either manual           or electric.     

      It helps promote safety because every tool goes through a verification process, which makes sure        it is in proper condition for use.


QUIZ 2 (20 POINTS TOTAL)
True/False (6 points)
1. The proper axe grip for a right-handed person is to have the left hand about 3 inches from the end of the handle and the right hand about three-fourths of the way up.
a. true
b. false

 2. When an axe blade cannot be guarded, workers should carry the axe over their shoulder.
a. true
b. false

3. To reduce the chance of injury while using a shovel, use the arch of the foot to press the shovel into clay or other stiff material.
a. true
b. false

 4. When workers use a wrench, it should be pushed away from the body for better control and less likelihood of slippage.
a. true
b. false

5. The torque exerted on a nut or bolt is directly proportional to the length of the wrench handle and the pulling force exerted on it.
a. true
b. false

6. Pullers or knockers are the only quick and safe way to pull a gear, wheel, pulley, or bearing from a shaft.
a. true
b. false


Multiple Choice (6 points)
7. Power tools should be cleaned with a recommended nonflammable and nontoxic solvent; to dry, use __________.
a. compressed air
b. air drying
c. a soft cloth
d. both a and b

 8. Reduce the risk of electric shock from power tools by _____.
a. using battery powered tools
b. using tools with low voltages in wet locations
c. using double insulated tools
d. all of the above

9. _____ is a sudden reaction to a pinched blade that causes an uncontrolled portable tool to lift up and out of the workpiece toward the operator.
a. Backfire
b. Kickback
c. Reciprocating
d. Miter

10. _____ saws are specially designed for crosscutting and beveling wood, nonferrous metals, and plastic.
a. Miter
b. Reciprocating
c. Jig
d. Saber

 11. _____ tools are widely used in logging, construction, and other heavy industries.
a. Gasoline-powered
b. Hydraulic-powered
c. Powder-actuated
d. None of the above

12. _____ tools are used to make forced-entry fastenings in various construction materials.
a. Gasoline-powered
b. Hydraulic-powered
c. Powder-actuated
d. None of the above


Short Answer (7 points)
13. What factors determine the selection of a chisel? When should you discard a chisel?
      The chisels must be it sufficiently thick in order that they do not bow on having been struck.
      Chisel surface must be free of burrs.
      The fungiform chisels must be rejected using only the one that presents a curvature of 3 mm of           radio. 

14. What precautions should be observed when using an axe? What may happen if you try cutting wood with a dull axe?
      Check edge
      The body of the ax isn't loose
      The proper way to hold the ax
      When aren't edged cutting may slip causing crash

 15. Why should pliers not be used in place of a wrench?
       Because it may cause wear on the heads of screws

16. What are the dangers involved with the use of soldering irons?
      Inhaling the smoke is dangerous, since it contains lead that goes straight to the lungs

17. What precautions should be made when using portable power tools?
      The disconnection will never by a sharp tug.

      To change useful tool must be disconnected and check standing.

      The drill, saw, disk, etc., will be appropriate and will be able to use, will be tight and a key is               used for tightening, take care to remove it before starting work

      If you work in wet rooms, the necessary measures in anticipation of electrical hazards will be             taken Insulated gloves, wooden stools, safety transformer, etc.

      Do not use these tools in a ambient explosive, training atmospheres are prepared for it.

18. What are the benefits of a GFCI?
      GFCI monitor the current flow through the circuit, and if the current flowing within it, with                 respect to the stream leaving the same (different small values equal to or greater GFCI 6 mA for         class A), GFCI instantaneously interrupts current in the circuit.    

19. What hazards are specific to chainsaws?
      Rebounds
      Recoil
      Hitches
      Sawing falls
      Falls in transfer
      Excess path
      Path detour


Short Essay (1 point)
20. Electric drills can cause injuries in several ways, and your boss is concerned that the employees of your facility may have picked up some bad work habits. What precautions should be followed when using portable electric drills? Demonstrate to your boss that you can use an electric drill safely.

Avoid the presence of electric cables in passageways.
Avoid contact with the spinning accessory in rotation.

You have to have additional handle for better grip and brake inertia switch, so that when stop pressing the machine automatically stops.

They must be repaired by authorized personnel.
The connection or power supply has to be done with hose moisture.
It has to choose the right drill bit for the material you have to be pierced.

They have to immediately replace worn or cracked tools

Perform regular maintenance of this equipment