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Operations concerns

We define the effect of a synnnetry operation on a wavefiinction in two different ways depending on whether the synnnetry operation concerned uses a moving or fixed reference frame (see [4]). Either we define its effect iismg the equation... [Pg.154]

There are important figures of merit (5) that describe the performance of a photodetector. These are responsivity, noise, noise equivalent power, detectivity, and response time (2,6). However, there are several related parameters of measurement, eg, temperature of operation, bias power, spectral response, background photon flux, noise spectra, impedance, and linearity. Operational concerns include detector-element size, uniformity of response, array density, reflabiUty, cooling time, radiation tolerance, vibration and shock resistance, shelf life, availabiUty of arrays, and cost. [Pg.420]

There are only three major operating concerns for mixers setup, incoming-feed rate, and product viscosity. [Pg.570]

Ensure that the information given to the operator concerning substance(s) to be conveyed is accurate and sufficient. [Pg.325]

Zone I - an area of major operational concern in the predicted biological downwind hazard area. Casualties may exceed 30% in unprotected personnel. [Pg.181]

Industrial Chemical Prioritization and Determination of Critical Hazards of Concern. Technical Annex and Supporting Documents for International Task Force (IIF)40, Industrial Chemical Hazards Medical and Operational Concerns. UASCHPPM Report 47-EM-6154-03. US Army Center for Health Promotion and Preventive Medicine, Aberdeen Proving Ground, MD, 2003. [Pg.88]

In terms of shape and size, catalysts are typically presented as extrudates (cylindrical, tri-lobes or four-lobes), in sizes of diameters from 0.8 mm to about 1.7 mm and lengths from 3 mm to about 7 mm. The effect of size and shape on operation concerns the pressure drop control, the fluid flow through the bed, the interparticle and intraparticle flow, the diffusion of the fluids from the external surface to the internal surface. The three and four lobes extrudates facilitates diffusion, but they are usually more fragile than the cylindrical extrudates increasing the risk of pressure drop build up. For operation of a trickle bed reactor with heavy feedstocks, for which the diffusion limitations are important, lobed extrudates are preferred. Meanwhile, for vapor phase reactors large cylindrical extrudates are used. [Pg.21]

According to the Illinois Environmental Protection Agency (IEPA), a series of gas blowouts has occurred at two waste injection wells in the state (Brower el al., 1989). In each case, well operators were injecting concentrated hydrochloric acid into a dolomite bed. At its plant near Tuscola, the Cabot Corporation injects acid waste from the production of fumed silica into the Cambrian Eminence and Potosi Formations below 5 000 ft (1 500 m) depth. Allied Chemical Corporation injects acid into the Potosi formation below about 3 600 ft (1 100 m). The acid, which is contaminated with arsenic, is a byproduct of the manufacture of refrigerant gas. Since some of the blowouts have caused damage such as fish kills, there is environmental interest as well as operational concern in preventing such accidents. [Pg.431]

Atomic systems, in lasers, 74 666-669 Atomic Vapor Laser Isotope Separation (AVLIS) process, 25 416 Atomic weight, 75 748 Atomization, 77 774-775 in spray coating, 7 69-74 technology of, 23 175 Atomizer operation, concerns related to, 23 195... [Pg.78]

Control of site equipment is always important for safety and operational concerns. Many sites are remote or not staffed on a daily basis. Remediation equipment should be fitted with failsafe systems to shut down the system in the event of failure, fire, or unusual conditions (such as injection well plugging). Alarm systems should be included, which may be as simple as illuminating a warning hght, or as complex as a teleconnection to a remote computer station or telephone alert to the operator s residence. Many commercial companies offer remote monitoring equipment. [Pg.286]

Looking at the extent of occurrence of OPERs, concerns rise about possible health effects related to constant exposure to these chemicals. Updated safety levels have been suggested for TCP and TDCiPP [67]. [Pg.251]

Another phenomenon which proved to be of operational concern was the deposition of iron pyrite, FeS , which I will discuss later. [Pg.325]

The biggest operating concern is handling the HSS and dealing with caustic carryover from the prescrubber. [Pg.313]

I am a Service Manager within the Social Services Department of a London borough. The Service Manager role is a combination of several middle management functions in an attempt to flatten the hierarchy and we are stretched in many directions. It is not uncommon to be representing the local authority at the highest level one moment, then be locked into complex local operational concerns the next. [Pg.3]

In [90] the relationship between eigenvalues of the Casimir operators of higher-rank groups and quantum numbers v, N, L, S is taken into account to work out algebraic expressions for some of the reduced matrix elements of operators (Uk Uk) and (Vkl Vkl). However, the above formulas directly relate the operators concerned, and some of these formulas are not defined by the Casimir operators of respective groups. [Pg.157]

Section I of the HyS process involves two main operations. The first operation concerns electrolysis and the anolyte preparation. The second operation concerns S02-02 separation. [Pg.215]

The individual distribution valves are under pressure control (PC-42 to PC-44). Knowing the volumes of the Fi2 storage tanks and the pressures in each (P18, P19, P20, etc.), the central optimizer terminates charging when a tank is full, or advises the operator concerning the additional amount of H2 a particular vessel can receive. [Pg.536]

The best-known and (commercially) most successful example of combining reaction and separation is the reactive distillation. Reactive distillation has been investigated widely [3, 4 see also Chapters 3, 4, and 5] and is applied to many processes [5], However, the integration of more than one functionality in an apparatus leads to a loss in degrees of freedom. For a successful integration, the feasible window of operation concerning process conditions such as pressure and temperature must coincide for the reaction, the separation and the apparatus (Fig. 8.1). [Pg.233]

This operation concerns the separation of mixture with the weight composition nonaromatics (40), benzene (24) and toluene (36). The selector is again bulk separation. The appropriate method is extractive distillation, as discussed pre-... [Pg.82]

One operating concern for a rich combustor is the occurrence of high combustor wall temperatures. In a fuel-rich combustor, air cannot be used to film-cool the walls and other techniques (e.g., fin cooling) must be employed. The temperature rise of the primary combustor coolant was measured and normalized to form a heat flux coefficient which included both convective and radiative heat loads. Figure 7 displays the dependence of this heat flux coefficient on primary combustor equivalence ratio. These data were acquired in tests in which the combustor airflow was kept constant. If convective heat transfer were the dominant mechanism a constant heat flux coefficient of approximately 25 Btu/ft -hr-deg F would be expected. The higher values of heat flux and its convex character indicate that radiative heat transfer was an important mechanism. [Pg.164]

The acquisition program allows the operator to choose the scan mode or the SIM mode, the range of masses that are scanned, either low or high resolution, and so on. The acquisition processor is set according to the data given by the operator concerning the analysis to be carried out. Most recent instruments are entirely electronically controlled from parameters... [Pg.232]

The sequence of operations concerned in this case is as follows (Fig. 1.14ai ... [Pg.65]

An IBPCS is usually defined to be a system in which all operations concerned with the production of virgin biomass feedstocks as dedicated energy crops... [Pg.549]

Another emission control aspect of diaphragm cell operation concerns the use of the crude cell product, still containing sodium chloride, to carry out base-catalyzed reactions such as ring closure of propylene chlorohydrin (Eq. 8.27) or hydrolysis of chlorobenzene (Eq. 8.45). [Pg.238]

Decommissioning and dismantling, when the plant is retired from service having been judged as no longer viable as an operating concern. [Pg.60]

Tactical situation in the proposed smoke area of operations concerning enemy contact, obstacles, etcetera. [Pg.7]


See other pages where Operations concerns is mentioned: [Pg.3]    [Pg.2036]    [Pg.2564]    [Pg.449]    [Pg.27]    [Pg.56]    [Pg.245]    [Pg.3]    [Pg.262]    [Pg.9]    [Pg.898]    [Pg.672]    [Pg.289]    [Pg.181]    [Pg.1794]    [Pg.2318]    [Pg.467]    [Pg.162]    [Pg.229]    [Pg.1617]    [Pg.2155]    [Pg.83]    [Pg.299]   
See also in sourсe #XX -- [ Pg.63 ]




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