Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

The preliminaries

The decision to introduce GLP will be formulated in a policy document which identifies the individuals who will act as test facility management under the GLP regulations. The advice of a Quality Assurance expert will also have to be sought already at this stage of GLP implementation. [Pg.364]

The organisation of the test facility has to be adapted so as to clearly separate the organisational units under GLP from those which do not need to comply with these Principles. Additionally the designation of the future Study Director(s) will be an important step, since this (these) individual(s) will be instrumental in the further implementation steps. [Pg.365]

Now the time has come to take stock of the activities, study types and test systems which are envisaged to come under GLP. The organisational separation which has taken place has now to be translated into the physical separation of sites, areas, rooms, laboratories, greenhouses or field plots, and the concomitant allocation of the necessary equipment to these GLP sites. The foremost consideration in this respect should not be the organisational ease with which the separation may be pulled through, but the GLP requirement of suitability . For each activity, test system and study type the most suitable places, areas or rooms have to be singled out. Of course, if the maximal suitability concept should yield a distribution of rooms and areas that would be impractical to a large extent, e.g. if the GLP areas were isolated from each other to the extent as to make the daily work a cumbersome, perpetual and [Pg.365]

Concomitant with the separation of the working areas and their designation as GLP or non-GLP , the relevant equipment will have to be distributed between these areas. This may not be very problematic, if the activities under GLP were to employ a set of equipment completely different from the one the non-GLP activities would be in need of. If this were not the case, then two solutions are possible  [Pg.366]

The former solution might have the advantage that the looming problem of having to validate retrospectively the respective instruments might be defused or at least alleviated, while of course the latter option might be cheaper, at least for the moment being. [Pg.367]


The Zond VD - 96 is intended for the detection of cracks, precipitates, inclusions etc. and corrosive defects with the preliminary estimation of their depth in various objects of magnetic and non - magnetic steels, non-ferrous and refractory metals and welds including coatings. [Pg.342]

The inspection possibility of welds and rough surfaces also under the coating of various foulings, oils, scale, rust etc. without the preliminary preparation. [Pg.343]

Since the known stress calibration method was adopted to perform the SPATE setting, the calibration factor was directly obtained from the preliminary tests above mentioned. However, it is interesting to observe that assuming the correction factor equal to 1 at 10 Hz, the ratio of Cf at the others investigated frequencies (2 and 5 Hz) to the calibration factor at 10 Hz gives ... [Pg.413]

As regards implementation of the 5th Framework Programme, the preliminary guidelines suggest that the new programme must be... [Pg.931]

The preliminary observations underline the manufacturer s responsibilities. He is obliged to analyse the hazards in order to identify those which apply to his equipment. He must design, manufacture and check his equipment to ensure its safety even with respect to their use under reasonably foreseeable conditions. In addition, the manufacturer must interpret and apply the essential requirements in such a way as to take account of the state-of-the-art at the time of design. That latter requirement underlines the evolutive character of the essential requirements which is inherent in the new approach. [Pg.941]

Based on a preliminary set of acceptance criteria s developed by LM Glasfiber a standard data-set has been developed for each of the above mentioned set-ups, in order to minimize the scanning time. During the performance demonstration at LM Glasfiber the effective scanning time for a complete 21m wind turbine rotor blade based on the preliminary acceptance criteria s, was found to be less than hour. [Pg.982]

The second application was checked in a feasibility study. The preliminary results show that segregations in Inconnel IN 718 can be detected within the volume. It can be assumed that segregations also in other type of material can be detected by this method. Several details, however, have to be checked before a routine use of this susceptibility based method. Among these details are to determine the susceptibility contrast of v ious segregations in various matrix materials as well as sizing and localisation procedures of the segrations. [Pg.991]

When crystallisation is complete, the mixture of crystals and crude mother-liquor is filtered at the pump, again using a Buchner funnel and flask as described on p. 10, and the crystals remaining in the funnel are then pressed well down with a spatula whilst continual suction of the pump is applied, in order to drain the mother-liquor from the crystals as effectively as possible. If it has been found in the preliminary tests that the crystalline material is almost insoluble in the cold solvent, the crystals in the... [Pg.18]

Liberation of iodine on heating. On heating in a dry tube, iodoform gives off copious violet vapours of iodine. This will have been observed during the Preliminary Tests, p. 319. [Pg.392]

The following alternative procedure is sometimes useful. Heat the amine with the theoretical quantity of benzoyl chloride (if the molecular weight is unknown, use an equal weight of benzoyl chloride in the preliminary experiment) to 100° for 20-30 minutes. Allow to cool, add excess of 5 per cent, sodium hydroxide solution and shake, if necessary,... [Pg.652]

Benzanilide and similar compounds are very slowly hydrolysed by concentrated hydrochloric acid hydrolysis is quite rapid with 60-70 per cent, sulphuric acid (for experimental details, see Section IV,52). In the preliminary experiment boil 0 5-1 Og. of the compound with 10-20 ml. of dilute sulphuric acid (1 1 by volume) imder reflux for 20-30 minutes. Dilute with 10ml.of water and filteroflfanyacid which may be precipitated if the carboxyhc acid is hquid and volatile, distil it directly from the reaction mixture. Render the residue alkaline and isolate the base as above. [Pg.801]

Typically, dry potassium nitrate is pulverized in a ball mill. Sulfur is milled into cellular charcoal to form a uniform mix in a separate ball mill. The nitrate and the sulfur—charcoal mix are screened and then loosely mixed by hand or in a tumbling machine. Magnetic separators may be used to ensure the absence of ferrous metals. The preliminary mix is transferred to an edge-mimer wheel mill with large, heavy cast iron wheels. A clearance between the pan and the wheels is required for safety purposes. The size of this gap also contributes to the density of the black powder granules obtained. Water is added to minimize dusting and improve incorporation of the nitrate into the charcoal. The milling operation requires ca 3 to 6 h. [Pg.52]

The toxicity of both feeds and products must be carefully considered during the preliminary design stages (53,54) especially if the feeds or products contain known or suspected carcinogens. Special testing may even be requked prior to operation to determine the toxicity of unknown materials. [Pg.42]

Extension of the appHcations of polymethine dyes has required special spectral and other characteristics. As a rule, the search for and synthesis of promising new compounds having desired properties imply the preliminary estimation of their most important parameters on the basis of elaborated theoretical conceptions. Thus, an effective way of governing electron properties consists of the variation of molecular topology of polymethines. [Pg.499]

A novel interface to connect a ce system with an inductively coupled plasma mass spectrometric (icpms) detector has been developed (88). The interface was built using a direct injection nebulizer (din) system. The ce/din/icpms system was evaluated using samples containing selected alkah, alkaline earths, and heavy-metal ions, as well as selenium (Se(IV) and Se(VI)), and various inorganic and organic arsenic species. The preliminary results show that the system can be used to determine metal species at ppt to ppb level. [Pg.247]

The model developed, which has been in use for many years both for the training of professionals and speciaUsts and the preliminary education of nonspeciahsts, leads toward a universal language for odor relationships, and is named the spectmm or field of odor. This spatial model has been based on 42 reference odorants, including vanillin, and is becoming the methodological reference for describing odors (see Odormodification). [Pg.400]

Primary Investigation. The basic systems engineering approach is the most suitable method for developing a solution to industrial wastewater management. The preliminary investigation includes a plant survey and the characterization of the wastewater source. [Pg.225]

The ziac concentrate is first roasted ia a fluid-bed roaster to convert the ziac sulfide to the oxide and a small amount of sulfate. Normally, roasting is carried out with an excess of oxygen below 1000°C so that comparatively Htfle cadmium is eliminated from the calciaed material ia this operation (3). Siace the advent of the Imperial Smelting Ziac Furnace, the preliminary roasting processes for ziac and ziac-lead concentrates result ia cadmium recovery as precipitates from solution or as cadmium—lead fume, respectively, as shown ia Figure 1. [Pg.385]

During process development, a model can be developed as soon as a conceptual flow sheet has been formulated. This model can be updated as more information about the process is obtained. Even at an early stage in the project, the model can be used to assess the preliminary economics of the process and the effect of technological changes on these economics. The model can aid in interpreting pilot-plant data and allows the study of many process alternatives. [Pg.72]

Capital Investment. Erom the viewpoint of a project, all of the capital that must be raised is external capital. Equity capital is the ownership capital, eg, common and preferred stocks or retained cash, whereas debt capital consists of bonds, mortgages, debentures, and loans. Nearly all investment involves a mixture of both types so as to maximize the return on investment (21). The debt ratio (debt/total capital) for the chemical industry is typically over 30%. Because financial details are not well known during the preliminary phases of project analysis, the investment is viewed simply as the total capital that must be expended to design and build the project. [Pg.446]

The important factors to consider in the preliminary selection of a diyer are the following ... [Pg.1186]

Preliminary Analysis The purpose of the preliminary analyses is to develop estimates for the model parameter values and to estabhsh the model sensitivity to the underlying database and plant and model uncertainties. This will estabhsh whether the unit test will actually achieve the desired results. [Pg.2556]

The preliminary precipitation of proteins from milk is realized through the addition of solutions of acetic acid (1,7 mol/1) and sodium acetate (lmol/1) at t = 40-45°C before chromatographic isolation of OxTC. The precipitated proteins are separated by filtration. OxTC is detenuined in filtrate after its isolation on chromatographic column. Contents of OxTC was determined on calibration curve which is linear within concentration range 0,01-1,0 p.g/ml. [Pg.357]

Sodium sulfate (anhydrous). Has a large capacity for absorption of water, forming the decahydrate below 33°, but drying is slow and inefficient, especially for solvents that are sparingly soluble in water. It is suitable for the preliminary drying of most types of organic compounds. [Pg.28]


See other pages where The preliminaries is mentioned: [Pg.293]    [Pg.333]    [Pg.2717]    [Pg.17]    [Pg.76]    [Pg.110]    [Pg.390]    [Pg.141]    [Pg.552]    [Pg.273]    [Pg.721]    [Pg.70]    [Pg.72]    [Pg.458]    [Pg.256]    [Pg.70]    [Pg.73]    [Pg.36]    [Pg.274]    [Pg.56]    [Pg.378]    [Pg.189]    [Pg.377]    [Pg.476]    [Pg.1751]    [Pg.2564]    [Pg.27]   


SEARCH



Additional Preliminary Considerations for the Pilot Plant

Adjust the Preliminary Plan

Completion of the Crystal Structure and Preliminary Refinement

Hydrides of the Other Group 13 Metals Preliminaries and Prospects

Preliminaries on the Uniqueness of Steady States

Preliminary

Preliminary Observations on the Free Energy

Preliminary Remarks. Statement of the Problem

Preliminary Rubbing Out of the KBr Plates

Preliminary Summary of the Bohr Atom

Preliminary interpretation of the Arrhenius parameters

Preliminary investigation of the extension

Preliminary ranking of the factors

Preliminary tests of the system

Preliminary tests on the semimicro scale

Review the Preliminary Plan

TLC of the Cations Separated in this Preliminary Stage

The Electron-pair Bond Some Preliminaries

The Preliminary Assessment Information Rule—PAIR

The Preliminary Hazard Analysis Report

The preliminary experiments

The third law—preliminary

© 2024 chempedia.info