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Class13_1. Today’s topic: Design for safety There is no “ethics/safety” homework due. It will be part of the final report. DP…questions?. Your focus now should be on building and testing your device. Engineering ethics.

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class13 1
Class13_1

Today’s topic: Design for safety

There is no “ethics/safety” homework due. It will be part of the final report.

dp questions
DP…questions?

Your focus now should be on building and testing your device.

engineering ethics
Engineering ethics
  • Engineers are expected to conduct their professional activities with high ethical standards
  • This is more than a personal issue about “doing the right thing” or leading a moral life
  • It is a professional requirement and a commitment you make if you become an engineer
code of ethics
Code of ethics
  • Formal codes of ethics have been developed by all of the engineering societies (example ASME, AIAA)
  • They differ in detail, but are all basically the same
  • The handout has the starting section of the National Soc. Of Prof. Engineers
fundamental cannons
Fundamental cannons

1. Hold paramount the safety, health, and welfare of the public in the performance of their professional duties.

Notice the word “paramount”

fundamental cannons1
Fundamental cannons

2. Perform services only in areas of their competence.

Engineers must be trustworthy in applying their highly specialized skills, because few can check their work

fundamental cannons2
Fundamental cannons

3. Issue public statements only in an objective and truthful manner.

An obligation to the profession, part of public trust

fundamental cannons3
Fundamental cannons

4. Act in professional matters for each employer or client as faithful agents or trustees.

Loyalty and confidence-keeping are needed by the employer if the engineer is to be a valuable professional

fundamental cannons4
Fundamental cannons

5. Avoid deceptive acts in the solicitation of professional employment.

This is the issue of bribery

fundamental cannons5
Fundamental cannons

6. Conduct themselves honorably, responsibly, ethically, and lawfully so as to enhance the honor, reputation, and usefulness of the profession.

For example…

d. Engineers shall strive to adhere to the principles of sustainable development in order to protect the environment for future generations.

design for safety
Design for safety

``A good engineer must weave his technology into the fabric of society'', Sir Eric Ashby

design for safety1
Design for Safety

Experience has shown…

  • Most accidents result from the failure to fully consider how the product will be used and misused, rather than mechanical failure.
  • Changes in the product due to the way it is maintained often lead to unsafe conditions.
  • Manufacturing defects also contribute substantially to accidents.
safe design guidelines
Safe design guidelines

To design safe products, the engineer must consider:

1. The use and reasonably foreseeable misuse of the product.

safe design guidelines1
Safe design guidelines

To design safe products, the engineer must consider:

2. Other people who may be affected by the product, besides the intended user.

safe design guidelines2
Safe design guidelines

To design safe products, the engineer must consider:

3. The environment in which the product is used.

safe design guidelines3
Safe design guidelines

To design safe products, the engineer must consider:

4. What hazards might arise when reasonably foreseeable failures or malfunctions of the product occur.

safe design guidelines4
Safe design guidelines

To design safe products, the engineer must consider:

5. Manufacturing quality, and possibilities for convergence’s of detrimental extreme tolerances.

safe design guidelines5
Safe design guidelines

To design safe products, the engineer must consider:

6. Changes that occur over time, e.g. material properties, wear, corrosion

safe design guidelines6
Safe design guidelines

To design safe products, the engineer must consider:

7. How the product will actually be maintained, poorly maintained, improperly maintained.

safe design guidelines7
Safe design guidelines

To design safe products, the engineer must consider:

8. The whole life cycle of the product: design, production, distribution, consumption, retirement

safe design guidelines8
Safe design guidelines

To design safe products, the engineer must consider:

9. All standards and state‑of‑the‑art in the technology.

exercise
Exercise

Work in a small group. Imagine you are a team of engineers.

Address the 9 design for safety guidelines as they might apply to the design of a residential hotwater heater.

exercise1
Exercise

Now imagine that your team is designing a kitchen mixer. Discuss the implications of the nine design for safety guidelines.