Deck 16: Mechanical Hazards and Machine

Question 1

Tearing and punctures are often a result of nip point hazards.

Answer 1

False

Question 2

Fixed guards provide a temporary barrier between workers and the point of operation.

Answer 2

False

Question 3

A robot's work envelope is the three-dimensional area established by the robot's full range of motion.

Answer 3

True

Question 4

Mechanical hazards are those associated with power-driven machines, whether automated or manually operated.

Question 5

Guards are not effective when used at the point of operation.

Question 6

In an industrial setting, people interact with machines that are designed to drill, cut, stamp, punch, and shape such materials as metal, plastics, and elastomers.

Question 7

Three types of point of operation guards are fixed, interlocked, and adjustable.

Question 8

When designing machine safeguards, which of the following considerations should be made?

A) Be durable
B) Allow safe maintenance
C) Create no interference
D) Protect against falling objects
E) All of the above

Question 9

When a body part comes in contact with a sharp edge, which of the following occurs?

A) Crushing
B) Puncturing
C) Shearing
D) Cutting
E) Spraining

Question 10

The purpose of a physical barrier is to provide a visual indication of the work envelope area.

Question 11

Which of the following is the best guard used in a robot's work envelope?

A) Photoelectric device
B) Pullback device
C) Electromechanical device
D) Physical barrier
E) Point-of-operation devices

Question 12

Failure to properly lockout machines can be fatal.

Question 13

Which type of guard shuts down the machine when the guard is not securely in place?

A) Fixed
B) Interlock
C) Adjustable
D) Point or operation
E) Optical

Question 14

When a mechanical hazard is observed take immediate corrective action.

Question 15

Feeding and ejection systems can be effective safeguards if properly designed and used.

Question 16

The most common mechanical injuries are cutting and tearing, shearing, crushing, breaking, straining, spraining, and puncturing.

Question 17

Automated feeding and ejection systems eliminate the need for guards.

Question 18

Which type of optical device shuts down the machine any time the light field is broken?

A) Cathode ray tubes
B) Electromechanical device
C) Pullback device
D) Radio-frequency device
E) Photoelectric device

Question 19

A tagout device is any prominent warning device such as a tag that can be affixed to an energy isolation device to prevent the accidental or inadvertent energizing of a machine or piece of equipment.

Question 20

Interlocking guards are suitable for many specific applications can be constructed in-plant, require little maintenance, and are suitable for high-production, repetitive operations.

Question 21

When a machine is being operated without the safeguard, which of the following actions should be taken?

A) Stop machine immediately
B) Report to management next day
C) Show caution while machine is operating
D) Discuss at next safety meeting
E) Warn oncoming shift to be careful

Question 22

Which guard is most effective?

A) Photoelectric device
B) Pullback device
C) Electromechanical device
D) Physical barrier
E) Point-of-operation devices

Question 23

Which point-of-operation device consist of contact bars that allow only a specified amount of movement between the worker and the hazard?

A) Electromechanical devices
B) Pullback device
C) Restraint device
D) Safety trip device
E) Photoelectric device

Question 24

Which of the following feeding or ejection systems prevent the operator from having to enter the danger zone?

A) Automatic feed systems
B) Semiautomatic feed systems
C) Automatic ejection systems
D) Semiautomatic ejection systems
E) All of the above

Question 25

Which of the following questions should be included in a machine guarding self-assessment?

A) Are all exposed power shafts located less than three feet (one metre) above the working level properly guarded?
B) Are all hand tools and other hand-operated equipment inspected regularly for hazardous conditions?
C) Is compressed air used to clean tools, machines, equipment, and parts reduced to less than 100 kilopascals or 15 pounds per square inch (psi)?
D) Are the tool rests for grinding wheels set to 3 millimetres or more of the grinding wheel?
E) Are all compressed gas cylinders inspected regularly and systematically for any signs of rust?