Portable equipment

There is a trend in the last years to extend the application range of metal-ceramic tubes also to medium power portable equipment 160kV to 300kV portable systems are well known in the market. 

The Pr EN 12668-1 concerns the verification of characteristics of ultrasonic flaw detector. It is mainly applicable to portable equipment incorporating Ascan visualisation on screen, and which bandwidth is comprised between 0,5 and 15 Mhz. The project describes three levels of verification ... 

In non-destructive testing both the stationary and portable equipment is used, the latter - more frequently. Transportation of the equipment to the object to be tested demands adjustment of testing parameters directly before the examination realization. 

In the field of radiation methods of control, development work was performed in order to create the X-ray detectors with a low content of silver. X-ray TV systems with improved performance for automatic interpretation of the X-ray TV images, portable radiometers and dosimeters, creation of portable equipment for radioscopy of the welded joints of pipelines, etc. 

Portable equipment and temporary connections for processing receive more wear than fixed system. This may lead to hazardous release, ignition or explosion. 

Analyze hazards before using portable equipment... 

The portable equipment market usually needs to turn off any temporarily unused circuits to extend its battery life. In this case, a simple series MOSFET switch can be used. The RDS(ON) should be as low as possible to minimize the power dissipation within the MOSFET switch. These approaches are shown in Figure 3-58. 

Detector Tubes/Pumps Detector tube pumps are portable equipment which, when used with a variety of commercially available detector tubes, are capable of measuring the concentrations of a wide variety of compounds in industrial atmospheres. Operation consists of using the pump to draw a known volume of air through a detector tube designed to measure the concentration of the substance of interest. The concentration is determined by a colorimetric change of an indicator which is present in the tube contents. 

Dusts produced by quarrying and fluorides emanating from oil refineries are typical pollutants, which need regular monitoring. A range of portable equipment for the identification and quantification of toxic and other gases can be used on an ad hoc basis. 

Potentiodynamic polarisation The characteristics of passive/active conditions for metals can be readily defined using this technique ". Details for laboratory application can be found in ASTM Standard G5 (latest revision). Application in plant is easily performed as portable equipment (potentiostat) is available from several manufacturers, with some models incorporating built-in computer facilities. 

Cadmium presents an environmental risk. Since small nickel-cadmium cells are often not separately disposed of, they may enter municipal garbage incinerators. The search for alternative materials for the negative electrode led to metal hydrides, which not only are regarded as environmentally less critical, but also allow higher energy density than cadmium. This is especially important for use in portable equipment, such as cellular phones or lap-... 

Portable Equipment. Chemical shoreline cleaning agents enhance removal of stranded oil from shoreline surfaces, but site-specific variables, physical and chemical properties of oil, and variations in substrate types influence the performance of shoreline cleaning agents. It is difficult to predict the performance for site-specific variables. Therefore on-site testing of shoreline cleaning agents with oil and local substrates is needed. 

One of the disadvantages of early phosphorus surveys was not long ago, the need to obtain a relatively large number of heavy soil samples, which had to be taken to a chemical laboratory for analysis. In later studies, however, use has been made of portable equipment that makes it possible to analyze, even in the field, very small samples, and statistically appraise the analytical results (Persson 1997). 

Portable Equipment Less susceptible to damage from explosions Requires manned support. 

For onsite analysis, the examination of the vast number of samples necessitates the use of quick, reliable, field portable equipment that can rapidly, quantitatively verify the many chemically different types of ammunition, explosives, and pyrotechnics. The most common suite of analytes to detect is large, consisting of very chemically different compounds and usually occurs at trace levels in complex environmental matrices. This suite encompasses smokeless powders, black powders, and numerous propellant and energetic formulations. Detection should also be sought for common decomposition products of these explosives such as the methylanalines, aminonitrotoluenes, nitrotoluenes, mono- and dinitoroglycerines, and the nitrobenzenes under on-site conditions. 

In addition to these smaller applications, fuel cells can be used in portable generators, such as those used to provide electricity for portable equipment. Thousands of portable fuel cell systems have been developed and operated worldwide, ranging from 1 watt to 1.5 kilowatts in power. The two primary technologies for portable applications are polymer electrolyte membrane (PEM) and direct methanol fuel cell (DMFC) designs. 

Intensive culture of bananas, as with many other crops, is beset with many problems. Even in isolated plantings, pests of one kind or another reduce the potential crop or even destroy it entirely. In the majority of cases pest control has been confined to large acreages in more intensified banana culture. Many factors have contributed to retarding the use of pest control, such as weather and ground conditions that prevent the use of portable equipment without expensive road systems, small plantations, lack of finances, indifference on the part of grower, and no local demand for quality fruit. 

The principal hazard associated with these and other flame-, heat-, or spark-producing work is the introduction of unauthorized ignition sources into areas of the facility. Control of hazards related to portable equipment and hot work requires developing and maintaining a comprehensive hot work procedure. 

Based on the physical layout of the site, the hazards of the process and the fixed fire protection systems, additional fire suppression equipment may be required to effectively manage a fire emergency. Portable fire suppression equipment assists in providing fire protection for the equipment involved in an emergency. The use of portable equipment provides protection, where the cost of fixed system may not be acceptable or the fire water supply may be limited. Examples of portable equipment include ... 

Portable equipment comes in a variety of sizes, shapes, and usage. Selection of portable equipment should be based on an assessment of the site s fixed fire suppression equipment, availability of personnel, and access to mutual aid. Portable equipment assists in being able reach the problem area with fire suppression equipment in a timely and efficient manner. 

Many facilities outsource either all or part of the inspection, testing, and maintenance functions to fire protection service companies. These companies perform a variety of services, including inspection of portable and fixed systems, flow test of water systems, operational test of portable equipment, testing of... 

Inspections consist of a visual check of the fire protection systems by qualified personnel to ensure the system is available for immediate use. Visual checks should be made using a checklist. The inspection should verify that the fixed and portable equipment is ready to be operated. The associated devices, fittings, piping, and valving are inspected to ensure they have not been tampered with and that there is no obvious deterioration, physical damage, or condition to prevent operation. Documentation of the visual inspections may vary from... 

Portable equipment (including tools, containers and vehicles)... 

Figure 3.2. Generalized clean room design. Entry of personnel occurs via changing rooms, where the operators first remove their outer garments and subsequently put on suitable clean room clothing (see e.g. Figure 3.3). All raw materials, portable equipment, etc. enters the clean room via a transfer lock. After being placed in the transfer lock, such items are sanitized (where possible) by, for example, being rubbed down with a disinfectant solution. They are then transferred into the clean room proper, by clean room personnel. Processed product usually exits the clean room via an exit transfer lock and personnel often exit the room via a changing room separate from the one they entered (in some cases, the same changing room is used as an entry and exit route). Note that, in practice, product may be processed in a number of different (adjacent) clean rooms...

Among the other early investigators of crocoite (Siberian red lead) were Count Apollos Apollosovich Musin-Pushkin0 (1760-1805), Tobias Lowitz (Tovii Egorovich Lovits) (1757-1804), and M. H. Klaproth (82). Count Musin-Pushkin s analyses were made with portable equipment during one of his mineralogical journeys (82). 

The Former School of Mining and Forestry at Schemnitz, or Selmeezbanya. Schemnitz, or Stiavnica Banska, Czechoslovakia, where Muller von Reichenstein, the discoverer of tellurium, was educated. When Austria-Hungary was divided in 1918, the collections, the library, the archives, and most of the portable equipment at the former Schemnitz School of Mines were taken to the University of Sopron in Hungary. Transylvania, with its historic mines of gold and tellurium, became part of Roumania. 

In air monitoring program accurate concentration determinations require careful attention to the sample collection and subsequent analysis of the collected sample. The analysis is the most critical step, especially if very low levels (ppb) of contaminants are being determined. However, in many cases, sampling may be the least accurate step since this job is performed in the field with portable equipment under conditions far less favorable than those that can be created and controlled in the lab ). ... 

A saturated Weston cell containing excess solid CdS04 Is a more precise voltage standard than the unsaturated cell but is more sensitive to temperature and mechanical shock and cannot be easily incorporated into portable equipment. 

Batteries for portable equipment 2 Wh-100 Wh Flashlights, toys, power tools, portable radio and television, mobile phones, camcorders, lap-top computers... 

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