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Ergonomics > Test 3 Review > Flashcards

Test 3 Review Flashcards

1
Q

What is Reliability?

A

The probability that any item will perform a Specified function for giving time under specific conditions

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2
Q

What is human reliability?

A

The probability of successful human performance on a job or task and any stage of system operation under a given time parameter

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3
Q

What does APJ Stand for

A

Absolute probability judgment

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4
Q

PC

A

Paired comparisons

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5
Q

THERP

A

Human error rate prediction

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6
Q

HEART

A

Human error assessment and reduction technique

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7
Q

IDA

A

Influence diagram approach

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8
Q

SLIM

A

Success likelihood index method

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9
Q

In order for a warning to be Successful it has to be?

A

Detected
Correctly interpreted
Abide by

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10
Q

Key things to remember about a written warning

A

Signal words danger, morning, and caution. Danger is the highest level of warning

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11
Q

What are the things that my warning has to have in order to be effective

A

Signal word, hazard, consequences, instruction

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12
Q

If I have a speech signal, what makes people more likely to listen

A

A female voice, short word or phrase duration, fast sound great, emotional voice rather than monotoned

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13
Q

L=

A

Words/# of sentences

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14
Q

N=

A

syllables/# words

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15
Q

What are the three stages of Gen. adaptation syndrome

A

Stage one: alarm reaction stage two: resistance stage III: exhaustion

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16
Q

In order for a label or sign to work it needs to be

A

Comprehensible legible readable

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17
Q

What are the advantages of Job Shop work

A

Lower frequency of repetitive motions, more recovery time, variety and muscle worked, more mental work

18
Q

What are the disadvantages of Job Shop work

A

More time on machine setups, increased waist, Porter work for them, increased potential for pairs/mixing, loss of automation system requires more training time, inventories on floor, reduced flexibility, more stress onQuality assurance

19
Q

What dictated maximum allowable work hours until 1985

A

Walsh Healey act

20
Q

What are the measurements of aerobic work capacity

A

Whole body, upper body or large muscle groups, lifting tasks, heat

21
Q

What are the measurements of muscles and measurement of work capacity

A

Strengths, endurance, gripping strength, maximum voluntary lift

22
Q

The greater the effort time the greater the effort the longer the recovery time

A

Relative effort level, effort time, recovery time

23
Q

Design should be for the weakest person

A

For a repetitive work task 20%. This is a highly repetitive work task 10%.

24
Q

What are some ways that I can check the cardiovascular effort

A

Heart rate, blood pressure, arteriolar peripheral resistance

25
Q

What are some signs of fatigue

A

Change positions, change hands, stepping away when possible, complaints

26
Q

What are some signs of dynamic work fatigue

A

Labored breathing, reports of being tired, reports of needing more sleep, elevated heart rates at breaks

27
Q

What is maximum voluntary contraction

A

The greatest force a person is willing to exert for a brief period of time. Six seconds

28
Q

What is maximum voluntary contraction useful

A

It provides an estimate of work capability

29
Q

What are the static word guidelines

A

Use of jig or fixture, provide handles or handholds, provide aid for carrying test that last more than one minute with objects more than 15 pounds

30
Q

What is the best measure for dynamic workload

A

Maximum aerobic work capacity

31
Q

Upper body is 70% of your overall body capacity

A

True

32
Q

What are the metabolic rates

A

8 Hour 33%
10 Hour 30%
12 Hour 25%

33
Q

What is the goal of job rotation

A

Reduce muscle fatigue

34
Q

How frequently should I rotate workers

A

Every two hours

35
Q

Why should I not rotate workers on a very difficult job

A

Because you are increasing the people at risk

36
Q

How do we define repetitive work

A

Tasks whose work cycle takes less than a few minutes to complete and which is repeated for at least two hours

37
Q

How do I make my repetitive work less risky

A

What a machine do it, spread load over as many muscle groups as possible, design task to allow grasping with power grip rather than pinching, avoid extreme flexion or extension of wrist

38
Q

What are some repetitive work guideline

A

Designed to keep working Neutral position, Keep forces low especially during rotation or flexion of joint, avoid repetitive gripping, minimize time are paste pressures, use less than 20% of maximum isometric muscle strength of the weakest worker, for very high repetitive rates key to west than 10%

39
Q

How do I Manage my muscular skeletal disorder

A

Train workers to recognize the symptoms, reassign workers with symptoms to less stressful jobs, Allow workers time to adapt they have been gone for more than two weeks

40
Q

What is a muscular skeletal disorder

A

It has to do with muscles, bones,Tendons and ligaments

Ergonomics (1 decks)

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