Some General Checks

Confirm accuracy of all flow measurement, level indicators, thermocouples, pressure gauges, weighing devices, etc. 

Confirm working of all non-return valves in process lines especially for adding materials to process reactors (backflow of materials can contaminate the materials in supply tanks). 

Calibration of metering pumps to be tested by collecting the discharge in separate tanks. This is to ensure correct feeding of raw materials to process reactors. The instmments can indicate correct readings when the probes are installed in flowing fluids and not at idle pockets of vessels or ducts. The probes should be corrosion-resistant or installed in suitable enclosures (stainless steel/ceramic/ Teflon—coated thermowell instead of stainless steel/ceramic/Teflon coated thermowell). Strainers shall be provided in sampling lines to prevent deposits of salts and ash on the probes especially those for pH measurements and concentration analysers. 

Check samples firom process streams/at inlet and exit of every unit to properly monitor and control the process at every stage. 

Accurate control of the process shall be done by measurement of flow, pH, concentration, temperatures, and pressures by using instruments and automatic controllers. 

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Before figuring out what a specific verb does, the program should do some general checking to determine whether the object is reasonable. If the object is an item, it has to be either in the room or in the character s inventory. If it s somewhere else, the character can t do anything with it. If the object isn t an item, then only a few verbs will work with it, so the program should make sure that the verb is an appropriate one. NORTH, for example, isn t something the character can TAKE, EAT, or OPEN. Only GO makes sense. 

Given below are the main types of paint, their properties and some general guidance on their use. For any specific requirements, it is always advisable to check with paint manufacturers. 

Volume Limitations by Route. In the strictest sense, absolute limitations on how much of a dosage form may be administered by any particular route are determined by specific aspects of the test species or dosage form. But there are some general guidelines (determined by issues of humane treatment of animals, accurate deliver of dose and such) that can be put forth. These are summarized in Table 13.5. Section 13.8 and Section 13.4, Formulation of Test Materials, should, of course, be checked to see if there is specific guidance due to the characteristics of a particular vehicle. 

As with other scientific fields, the practice of medicine has become increasingly specialized. Most doctors now become experts in treating specific parts of the body, and in some cases, treat only one type of disease. Think of the last two doctor visits you made were they to the same doctor Probably not. You probably went to one doctor for a general check-up, another to have your teeth cleaned, and still another if you wear eyeglasses. 

What does this all have to do with the brain Well, some of these hormones profoundly affect the way we think and feel. One of the first things physicians generally check when someone complains of... 

General checks on vehicles may be set out. Some substances m be snbject to transport only over designated routes. 

Ideally, if there is enough data, we can isolate the scaling functions Fi,2,3 experimentally and study their properties in detail. For the moment let us be content to check some general aspects that are implied by the forms (15.5.7) and (15.5.8). 

The discussion of some general principles of temperature measurements and thermometers is summarized in Fig. 3.3. The general method of temperature measurement is easily understood. One must first bring the thermometer, a system of known thermal properties, into intimate contact with the unknown system. For a mercury-in-glass thermometer this usually means complete immersion into the unknown system. Next, equilibration must be awaited. Finally, one must check whether a temperature correction is necessary... 

In a complex plant some sectors will be working while others are being cleaned or sterilised, and the plant designer must incorporate safety barriers (breaks in the flow lines) to prevent unwanted mixing, and superimposed must be some general supervisory control with an ability to check that all events are as desired. Furthermore, any failure must put the whole plant or sector of plant in a fail-safe position. 

Check valves are required in the piping system at any point where backflow of gas after a shutdown has the ability to restart the compressor, running it backwards or, for that matter, even in the normal direction. Reverse rotation is totally bad, as many components of the various compressor types are not designed for reverse rotation, and there is some possibility, generally remote, that the compressor could reach a destructive over speed. Forward rotation is bad primarily because the intent was to stop the compressor, and it is now operating out of control. This is a problem, particularly if the shutdown was caused by a compressor failure indication, and the need to stop was to prevent further damage. In this mode, it is unlikely that the compressor can attain an overspeed condition. An application with a high potential for backflow is the parallel operation of two or more compressors. 

The relative merits of various MO methods have been discussed in die literature. In general, the ab initio type of calculations will be more reliable, but the semiempirical calculations are faster in terms of computer time. The complexity of calculation also increases rapidly as the number of atoms in the molecule increases. The choice of a method is normally made on the basis of evidence that the method is adequate for the problem at hand and the availability of appropriate computer programs and equipment. Results should be subjected to critical evaluation by comparison widi experimental data or checked by representative calculations using higher-level mediods. Table 1.12 lists some reported deviations from experimental AHf for some small hydrocarbons. The extent of deviation gives an indication of the accuracy of the various types of MO calculations in this application. 

What-ll/Checklist combines the creative, brainstorming features of a What-lf with the systematic features of a Checklist. The What-lf analysis considers accidents beyond the checklist the check list lends a systematic structure to the What-lf analysis. A What-lf7Checklist examines the potential consequences of accident scenarios at a more general level than some of the more detailed I l liA methods. It can be used for any type of process at any life cycle stage. 

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