Design in-house

All cooling water treatment programs, whether designed in-house or via a water treatment service company, continue to focus on the minimization of hard water crystalline scales and sludges in the system as a major criteria for success. Program techniques employed are either pretreatment processes, such as lime-soda softening or ion exchange, the use of sulfuric acid or polymer-based chemicals that operate in an alkaline environment, or combinations of some or all of these processes. 

Based on the initial results of the feasibility study, the design and development of a cost reduced power electronics package appears feasible. The path to the lowest cost for power electronics is in a design that is optimized for the electrolysis process, and the best approach to accomplish this is to develop the design "In House" or in cooperation/ collaboration with a third party. 

II Assembly Design in-house, steel structure supplied... 

In practical operation dies are often made or designed in-house by factories themselves. 

The flow cell was designed in-house. The main body was constructed out of Teflon with quartz windows and Teflon gaskets. The system was tested thoroughly with non-toxic materials to assure leak-free flow through. 

Cyclone 1. Can be designed In-house 2. Less susceptible to plugging than other types 3> Can be operated at high Inlet velocity (with high pressure 1. Lower efficiency than vane line separators 2. A trap devica Is usually needed for liquid collection... 

Typically, production equipment is designed in-house by material makers. The equipment is partly produced in-house, and partly standard (e.g. mixer, dryer). 

The utilization of commercially available finite element packages in the simulation of routine operations in industrial polymer processing is well established. However, these packages cannot be usually used as general research tools. Thus flexible in-house -created programs are needed to carry out the analysis required in the investigation, design and development of novel equipment and operations. 

The Na—S system is expected to provide significant iacreases ia energy density for sateUite battery systems (69). In-house testing of Na—S cells designed to simulate midaltitude (MAO) and geosynchronous orbits (GEO) demonstrated over 6450 and over 1400 cycles, respectively. 

In any event, the users of the mixer can issue a mechanical specification aud determine the speed, diameter of an impeller, aud power with in-house expertise. Or they may issue a processes specification which describes the engineering purpose of the mixing operation and the vendor will supply a description of the mixer process performance as well as prepare a mechanical design. 

While successbil and economical system designs can be devised by experienced process engineers, the competent technical aid available from equipment supphers has led to a growing trend toward the purchase of complete systems, even on small jobs, rather than iu-plaut assembly from components on the basis of in-house designs. An idea of the change in capital investment for typical pneumatic-conveyor systems as a function of increasing transfer rates is given in Table 21-12. 

The decision to develop in-house or buy a tool or technique may arise as awareness of the opportunities in a business increases. Off-the-shelf products are more popular as the development of tools and techniques is very time consuming and labour intensive. A generally expressed desire is to use computerized techniques for easier documentation and design reuse. However, it should be noted that a paper-based... 

Pocket Guide. When a new maintenance form or procedure is introduced, a quick reference pocket guide can promote understanding and accuracy. The key to effectiveness is a deliberate design to provide maximum illustrations or examples in simple language. If it cannot be prepared in-house, outside help should be sought. Professionalism is essential to good communications. 

Side studies should be done by in-house company personnel if possible. If communications are not perfect, it is easy for a contractor to provide a study on the wrong basis. Company design and operating and economic philosophy often are not fully communicated to the contractor with resulting waste of time. In any event, as discussed previously, in-house personnel must do economics. Therefore, use of a contractor is limited to the same portions of the side study as for the overall evaluation. 

Resources are not limited to human resources, as stated in Part 2 Chapter 1. You need to ensure that the design groups are equipped with the necessary design tools, equipment, and facilities with which to execute the tasks. Once you have asked each group to propose how they are to meet the requirements, you then need to ensure that they have the capability of doing so. This is less of a problem in-house as with subcontractors. Due to their remoteness and the keen competition, they may make claims they cannot fulfill. In controlling the design you need to ensure that adequate resources are deployed by the subcontractors and to do this pre-contract surveys and assessments need to be performed. This is implied in clause 4.6. 

Establish a mechanism of reviewing progress through the design and development process for in-house designs and subcontracted designs. 

Billet, R., Packed Column Analysis and Design, Glitsch, Inc. Dallas, Texas (1986), confidential in-house report, not available to this author. 

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