Ergonomics Engineering

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IEGR 360 Ergonomics and Workplace Design Fall 2017 Assignment II Due: 09/12/2017 1. Give three examples each of hazard, danger, and risk and explain why they are what they are. 2. Apply Fundamental Ergonomics Model to the design of a hand tool. 3. What are the three questions that need to be answered to judge if a tool is ergonomically designed? Explain. 4. Given, Company A B C Full time employee 160 155 150 MSD cases in 2000 8 9 10 MSD cases lost time (days) 110 150 140 Back cases in 2000 10 8 12 Back cases lost time (days) 160 200 190 a) Calculate illness and injury rates (frequency and severity) per 100 workers for each of the three companies. b) What can you conclude about the three companies based on the results of injury and illness rates? Scanned by CamScanner
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HiKindly see attached the completed homework. I've included both a doc and a pdf version in case you have any problem when trying to read the equations used in question 4

Running head: ERGONOMICS HOMEWORK – ASSIGNMENT 2

ERGONOMICS HOMEWORK – ASSIGNMENT 2
(NAME)
IEGR 360 – Ergonomics and Workplace Design
(DATE)

1

ERGONOMICS HOMEWORK – ASSIGNMENT 2

2

Question 1.
A hazard is something that might cause harm. Some examples of hazards include the
different types of chemical hazards since most chemicals are toxic, carcinogenic or corrosive, an
electrical hazard like a not completely isolated high voltage apparatus or a biological hazard like
a dangerous virus such as the influenza A virus.
A danger is something that represents a risk but can easily be avoided through caution.
Examples of danger include a fire since it represents the risk of being burned but such risk can be
avoided by getting away from the flames or using specially designed suits, a wet floor since it
poses the risk of falling down but this can be avoided by waiting until it dries, and a pungent
object like a needle, since it represents the risk of being injured, but it can be avoided by storing
and disposing of needles appropriately.
Finally, a risk is the probability that either a hazard or a danger causes harm. In this
regard, using the previous examples, examples of risks would be being intoxicated, getting ill, or
getting burned.

Question 2.
According to the fundamental ergonomics model, the designed hand tool should be of
light weight so that the person can use it with only one hand, and have the adequate dimensions
to be hold safely and comfortably. Taking this into account, the hand tool designed would need
to:


Weigh less than 2.2 kg, so that it can be carried out without risking muscle fatigue



Have its center of gravity aligned with the second and/or third fingers so that it can be
hold in a natural-like posture

ERGONOMICS HOMEWORK – ASSIGNMENT 2



3

Have handles to which the hand can attach firmly while using the tool

The following image represents the design for an ergonomic screwdriver. As can be observed, all
the above criteria are followed.

Question 3.
1. Is its weight comfortable for prolonged use without unnecessary muscle fatigue? As has
been stated in the previo...


Anonymous
I was struggling with this subject, and this helped me a ton!

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