Condition assessment

BE-3019 A methodology for life prediction and condition assessment for welds of Mr. A.A. BetisU EDPSA... 

In outdoor conditions assess the way in which the weather is likely to change and decide how this may affect the progress of the job. 

For example, the behaviour with water and hydrocarbons depends on the grade, stabilization, immersion time and the actual temperature. According to the sources and conditions, assessments vary from satisfactory to unsatisfactory. 

Adiabatic passage schemes are particularly suited to control population transfer between states, since the adiabatic following condition assesses the stability of the dynamics to fluctuations in the pulse duration and intensity [3]. The time evolution of the wave function does not depend on the dynamical phase, and is therefore slow in comparison with the vibrational time scale. This fact guarantees that the time variation of the observables during the controlled dynamics will be slow. Adiabatic methods can therefore be of great utility to control dynamic observables that do not commute with the Hamiltonian. We are interested in the control of the bond length of a diatomic molecule [4]. 

Geotechnical surveys are often executed without sufficient detailed scientific research. Sometimes also the pipeline design and the condition assessment for construction are rather insufficient. 

Crystallization additives are a common method to improve crystal quality in proteins (McPherson and Cudney, 2006). With RNA, it is common to screen a series of different cations, as their role in RNA structure and catalysis is well documented for many RNA and RNA-protein systems (Pyle, 2002). Since various cations will interact with the RNA differently, our lab uses a cation screen comprised simple metal cations and polyamines (Table 6.1). Each solution in this table is a lOx stock that is added to an optimized condition (or one found in a sparse matrix) and the set of 24 conditions assessed for potential improvement in crystal quality. 

K. Videm and R. Myrdal, Instrumentation and condition assessment performed on Gimspystraumen bridge , Proc. International Conference on Repair of Concrete Structures, Svolvasr, Norway, May 28-30,1997, Norwegian Road Research Laboratory (Ed. A. Blankvoll), pp 375-390. 

TABLE 39.1 Description of Grades Used in Skin Condition Assessment... 

The complexity, time and cost of many lubricant property tests has meant that many equipment operators, particularly those with large fleets, rely on a partial oil condition assessment based on only one or two oil properties, for instance, viscosity and base number for diesel applications. 

Toms, A. M. and Macisaac, B., On-tine Condition Sensor for Industriai Gas Turbine Condition Assessment , Paper No 05-IAGT-2.3, 2005... 

Miller, J. L. and Kitaljevich, D., In-Line Oil Debris Monitor for Aircraft Engine Condition Assessment Aerospace Conference Proceedings , 2000 IEEE, Vol. 6, pp. 49-56. 

The thermal environment is sometimes very complex. Convection, radiation and conduction are the common means of heat exchange and they vary independently over time and location. The final effects on the surface heat exchange of the human body are important factors for heat balance and for perception of the thermal conditions. Assessment of the thermal environment in a modern office or a car can create difficulties due to the complex interaction of the ventilation system with the situation close to the person and the external, environmental factors (e.g. radiation, air temperature and air movements). Furthermore, measurements in reality, as well as in the laboratory, contain various methodological problems. In this chapter some important aspects of dynamic water vapour and heat transport through fabrics are discussed. 

Inspection and future condition assessment requires that provision be made for as many blind flanges as possible. Since destmctive testing is the most reliable method, blind flange linings can enable tracking of the performance overtime. Maintenance considerations include repairs and repairability. 

No other polymers have surpassed fluoropoly-mers with respect to chemical resistance, low surface energy, low dielectric constant, and low coefficient of friction. These polymers will most certainly continue to be an indispensable part of world industry for the foreseeable future. The use of fluoropoly-mers is, however, expected to undergo significant changes in the future as legislations become more stringent with respect to safety and environmental emission standards. Specifically, the bars on fugitive emissions and non-intrusive condition assessment will have to be raised. 

Half-cell potential mapping has provided a very useful, non-destructive means to locate areas of corrosion for monitoring and condition assessment as well as in determining the effectiveness of repair work [4]. As an early-warning system, corrosion is detected long before it become visible at the concrete surface. Based on potential mapping, other destructive and laboratory analysis (e. g. cores to determine chloride content) and corrosion-rate measurements can be performed more rationally [3]. In addition, the amount of concrete removal in repair works can be minimized because the corrosion sites can be located precisely. 

Interpretation of the results. The interpretation has to be done by corrosion specialists with experience in reinforced concrete structures in the context of other information from condition assessment. The results can be used to pinpoint sites with high corrosion activity (in addition to halfcell potential measurements), to predict future deterioration of the structure or to assess residual service life. Daily and seasonal variations in the corrosion current due to changes in temperature and relative humidity will induce variations in values by more than a factor 2. To predict future deterioration several measurements in time are usually needed. When only one single value is available, it is recommended to assume a variation in J on ... 

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