Restriction operations

Where inerting is not used, one guideline restricts operations to metal or enameled metal tanks having a volume no greater than 5 m, a diameter no greater than 3 m and all conductive parts grounded. The liquid should contain a maximum of 1 wt% insoluble solids, have a maximum feed rate of 60 L/min and the delivery pressure should not exceed 50 bar. The vessel should be continuously drained to prevent liquid accumulation [127]. 

When considering the need for capital pretreatment equipment, sufficient care should be taken not to propose any particularly sophisticated external or internal water treatment regimen that of itself creates restrictive operational BW control limitations—where boiler design, steam usage, and common sense dictate no necessity for such limitations to be imposed. The overall water treatment program should not be overdesigned but should properly match the needs of the project. 

Steam flow restrictions. Operating a boiler that has a restricted steam flow due to blockages or deposits in the chevrons, baffles, collecting pipes, splash plates, or pans (perhaps resulting from longterm adverse water chemistry conditions) may cause localized high steam velocities that lead to carryover. 

It is interesting to compare the assumptions made by Bankoff to the restrictions operating in the investigation by Nicklin, Wilkes, and Davidson for slug flow. In their work the velocity component of the slugs due to liquid flow approached the maximum liquid velocity at the tube center-line. If this is also true of the bubbles of Bankoff s model and the bubble rise velocity due to buoyancy is ignored, then the velocity of the bubbles as given by Nicklin et al. would be,... 

Substituted NH ions Whalley, 28> discussed the spectroscopic effects of orientional disorder about one axis (in contrast to the disorder about three axes as described by Whalley and Bertie 03) and Bertie and Whalley 129> in the a-phases of the methylammonium halides. In principle, all vibrations of an orientational disordered crystal are spectroscopically active, but if the disorder is only about one axis, some restrictions operate, the symmetric bands are sharp in the one-dimensional disordered case, but the bands due to asymmetric vibrations (E) are broad. Whalley use the infra-red results of Sandorfy et al. 130>131> 0f the CH3 -ammonium halides to illustrate the effect which is predicted from interionic coupling of the E-modes. No such effect is visible in the spectrum of the methoxyammonium ion CH3ONH3 reported by Nelson, 32>. 

If one restricts operations to the ground and the first excited states, this equation reduces to... 

Selection of a health outcome for study depends in part upon the exposure of interest and methodological considerations such as the ability to define, measure, and validate adverse outcomes, especially if self-reported. Operational definitions for outcomes can be general or specific in nature (e.g., all birth defects versus spina bifida, respectively), and will affect the type of statistical analysis which can be performed and the interpretation of results. Statistical power may be limited if restrictive operational definitions are used for rare outcomes, or if other important covariates cannot be fully addressed. 

The major limitations for extensive use of NdFeB alloys in motors are (i) cost and (ii) restricted operating temperature range. Improved alloys with linear B vs H behaviour up to 150°C would satisfy the requirements. 

Some operators have expressed concern over the possibility of acid freezing and have restricted operation to 45 F. Others however, have reported exceptionally low acid make-up requirements at 32°F. to 35°F. and have not reported any freezing or other operating problems. Variations in the water content of the acid catalyst may explain why plant experience varies. 

Microbial enhanced oil recovery (MEOR) typically involves the use of bacterial cells for in situ production of chemicals in an oil well. The method has been found to be appropriate in recovering more oil from stripper wells (producing less than 10 barrels per day) thus, economic constraints result in restricted operating procedures. The organisms, nutrients, such as molasses, and air (for aerobic operation), are fed into the wellbore. Then, the well is closed for up to a few weeks to allow the cells to multiply and produce EOR chemicals, which can include gases, solvents, acids, biomass, and natural polymers. 

Development of an automatic measurement system is practical, if the same kind of measurements are made frequently. Also, the type of experiment affects the dennand to develop an automatic system. Very long or very fast experiments are often impossible to control and follow manually, b ause a human operator cannot work long periods without pauses and in rapid experiments the sampling rate can exceed that possible by hand. In large experiments the number of controlled and measured quantities restrict operators ability to follow every detail. These cases require automation. 

If deviations outside the tolerance range occur in one or several process parameters their consequences depend on the type of system, the extent of the deviations, the type and number of parameters affected and the functioning, respectively failure, of the monitoring and safety systems provided for such a case. Consequences can be restricted operation, standstill or an accident, which results in an explosion, a lire or the release of toxic or radioactive substances depending on the nature of the plant affected. Several of the consequences mentioned may occur simultaneously. 

The general low resistance to oxidation of carbon only permits restricted operational periods of the C/SiC structures at temperatures above about 450 °C. Its utilization in civil aircraft turbines or stationary gas turbines (e.g. as tiles in combustion chambers, for diffusers or for turbine vanes) with operational times of several 10,000 hours is therefore not possible... 

After the transition predecessor computation, we intersect the resulting set of generalized states with the set to traverse only intermediate predecessors holding il>. Using this restricted computation in the compute EX algorithm, we obtain a restricted operator. 

In the following Fig. 6 a similar breakdown is given for the ambient condition. The weather obviously cannot really be influenced. What can be influenced is the coincidence of the location of certain ambient conditions and the airplane, e.g. by restricting operations to daylight or to low turbulence. 

The restriction operator. P X denotes the mathematical restriction of expression X to the (polyhedral) domain P. 

CFR 258. In September 1991, 40 CFR 258 was promulgated. It provided further location restrictions, operating criteria, design criteria, ground-water monitoring, corrective action requirements, and closure and post-closure care requirements. Specific requirements of 40 CFR 258 are explained in applicable chapters of this manual. 

A restricted operative visual field prevents the surgeon s ability to visualize important structures beyond and through the exposed layers and makes... 

Passive design features Built-in design features (e.g., dividers, holders, spacers) that restrict operations to implement a control... 

Interpolation functions are required for the transfer of variables between meshes. An operator interpolation/prolongation maps meshes 2htoh. A restriction operator maps the functions of the meshes h to 2h. The most commonly... 

These residual values are then transferred to the coarse grid via the restriction operator. 

The following operators are dehned Ai, where i should be considered as a compact index that includes the bond i as weU as the one- and two-particle excitations of bond i, and Aij, which describes the two-particle excitations where one excitation is out of bond i while the other is out of bond j. Within the restricted operator subspace spanned by Ai and A j the operator Q can be written in the form... 

The merging of information and communications technologies has supported the growth in supply chain partnerships. These technologies have enabled extensive connectivity. Today s computer networks, open systems standards and the Internet enable people working in different areas of the supply chain to maintain constant contact. Since information transactions have become so easy, there is less of a need to restrict operations to within traditional organizational boundaries. These new capabilities offer the ability for supply chain parmers to share information in real time. This enables the partnering firms to hold lower inventories and incur fewer transactions costs. These lower costs can in turn be passed on to the customer in the form of lower prices and better value. Or alternatively retained as increased profits ... 

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