Competing design

Perhaps the simplest way to assess the reliability of a system is to count the active parts, flic 1C liability estimate is the product of the number of parts and some nominal failure rate for the parts. Ill the design phase, two competing designs may be compared on the basis of the numbei of parts but several cautions are in order. 

MORE SOPHISTICATED ANALYSIS OF COMPETING DESIGN CONCEPTS... 

There are too many inventors and little cooperation in finding the best combination of suspension, guidance, propulsion, and control. A national competition would be vei"y helpful, such as the locomotive competition in 1829 when George Stephenson s Rocket heat several competing designs by hauling a coach of passengers at 39 km/h (24 mph). 

Because it is not practical for the design engineer to expect to specify all fabrication features (including size, number of tubes, etc.) the foregoing provides an exposure to the topic, but relies on contact with a competent design/manufacturing firm for the final details. 

The reactor system selected will influence the economics of the process by dictating the size of the units needed and by fixing the ratio of products formed. The first factor, reactor size, may well vary a hundredfold among competing designs while the second factor, product distribution, is usually of prime consideration where it can be varied and controlled. 

Note In student design projects, the aim is to produce a competent design and also to communicate to the supervisor what has been done. It is therefore essential to include a summary of the major findings obtained by performing the HAZOP study (this is usually only performed on one... 

Competent design of chemical processes requires accurate knowledge of such process variables as the temperature, pressure, composition and phase of the process contents. Current predictive models for phase equilibria Involving supercritical fluids are limited due to the scarcity of data against which to test them. Phase equilibria data for solids In equilibrium with supercritical solvents are particularly sparse. The purpose of this work Is to expand the data base to facilitate the development of such models with emphasis on the melting point depressions encountered when solid mixtures are contacted with supercritical fluids. 

Wellpoints and wells are temporary systems, in that they must operate continuously to maintain the lowered phreatic line. A competently designed and properly functioning system can provide totally dry working condition over large areas, as seen in Figure 4.8. 

In addition to the fact there is only scanty information on the design of FTIH studies in nononcology indications, there is the need for a knowledge base in order to choose among competing designs for the conduct of a FTIH study in a nononcology indication. 

The other issue was that of the increased radiation from exposure of a large number of women to two mammograms. The competing design, adopted at the... 

We should not assume automatically that there will be any deterioration But if a reinforced plastics product was competently designed and soundly fabricated, material deterioration usually begins through one or more of the following four influences ... 

Step 4. Develop des. Often several teams work in parallel to develop and test competing designs, making modifications as necessary. The goal of this step is to prepare a detailed design, together with a plan for its management, manufacture, and quality assurance. 

It is worthwhile describing further the negative safety characteristics of these reactors in order to clarify the technical reasons for the accident, although they were not the only ones, and to see why the very competent designers made their decisions. 

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