Installation building component

The handling of geomembranes and building components on the constmction site, transport and proper installation has to be guaranteed by a sufficient number of in-stmcted helpers. The helpers are to be instmcted in their tasks referring to the characteristics of the individual constmction project. The extent of the instmction must be documented (participant, type of instmction, duration and date). 

For the installation and welding of geomembranes and geotextile protection layers as well as for their welding against plastic penetration and building components the following at least must be available ... 

The CE Plant Cost Index (7) is also pubHshed monthly in the Chemical Engineering]omaci A. Index values are given for various categories of equipment, installation, labor, building, and supervision, as well as a composite plant cost index. The composite index for complete plant costs, tabulated in Table 1, is frequentiy used for the translation of purchased equipment costs, even though the equipment component of the index would be better. 

Unit layout as installed is the next step of preparation. This may take some effort if analysts have not been involvea with the unit prior to the plant-performance analysis. The equipment in the plant should correspond to that shown on the PFDs and P IDs. Wmere differences are found, analysts must seek explanations. While a hne-by-line trace is not required, details of the equipment installation and condition must be understood. It is particularly useful to correlate the sample and measurement locations and the bypasses shown on the P IDs to those ac tuaUy piped in the unit. Gas vents and liquid (particularly water-phase) discharges may have been added to the unit based on operating experience out not shown on the P IDs. While these flows may ultimately be small within the context of plant-performance an ysis, they may have sufficient impact to alter conclusions regarding trace component flows, particularly those that have a tendency to build in a process. 

Figure 10.30 illustrates a multiple-stage exhauster and smooth-flow duct (pneumatic tubing) components. It also includes pictures of air cleaner-exha uster-motor installations located outside of buildings and connected to LVHV (or central vacuum cleaning) systems inside the buildings. 

The piping must be sufficiently flexible to accommodate the movements of the components as it heats up. In many cases, the piping has enough natural flexibility, by virtue of having reasonable lengths and plenty of bends that no undue stresses are set up. In other installations it is necessary to build in some means of achieving the required flexibility. 

From a practical review, perhaps it can be stated that buildings and construction materials are exposed to the most severe environments on earth, particularity when the long time factor is included. The environments include such conditions as temperature, ultraviolet, wind, snow, corrosion, hail, wear and tear, etc. Basically the following inherent potentials continue to be realized in different plastics ease of maintenance, light weight, flexibility of component design, combine with other materials, corrosion/abrasion/weather resistance, variety of colors and decorative appearance, multiplicity of form, ease of fabrication by mass production techniques, and total cost advantages (combinations of base materials, manufacture and installation). 

The electrical power of both plants (XX kW) is supplied by the main power supply of building (F). An emergency diesel power supply ofYY kW is installed, which switches on 1 min after a power break. (If YY is not equal to XX The sequence of components to be connected to the emergency set is listed in directive (q), deposited at the control center). The control- and calculating system of both plants is connected by shielded cables to an independent power supply system, called computer power, that excludes influences of power variation or breakdown. 

After you analyze the business context, the typical next steps are to redesign the business interactions and to install a new component. This may involve redrawing the diagrams if the business process is to be much changed, or you may need only to refine the picture to sufficient detail to see how the abstractly specified business processes are supported by the system you intend to build. (More on the procedure will follow in the next chapters.)... 

This pattern describes how to build a design starting from scratch. This route is suitable when you re designing a computer system or subsystem with no existing installation, no available major components to reuse, and no existing model of the business. 

Why the emphasis on freedom An example will help. I was asked to measure the sulfuric acid content in a gasoline component. My first idea was to separate the acid from the stream and measure the amount of acid and relate that back to the original concentration. My separator worked well at high levels but when I got down to the level of interest, below 100 ppm, the separator did not work at all. However, when we got to that level, the solution became turbid. The solution was to install an on-line turbidity detector instead of building a complex separator and analysis device, to measure acid in the 10-100-ppm level. This worked, but certainly was not the first approach. 

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