Secondary operations

It is also necessary to reduce the intensity of the radiation admitted into the pyrometer, because pyrometer lamp filaments should not be subjected to temperatures exceeding 1250°C. The reduction is accomplished by a screen or screens in manually operated secondary pyrometers they are usually neutral-density filters. 

Neben-. by-, side-, secondary, accessory, subsidiary, subordinate, sub-, auxiliary, supplementary, extra adjoining collateral ( /ec.) shunt, -achse, /. secondary axis, -ader, /. collateral blood vessel, -anlage,/. secondary plant, branch, -antrieb, m. Mach.) auxiliary drive, -apparat, m. accessory apparatus, accessory, -arbeit, /. by-work, extra work, spare-time work, -bedingung, /. supplementary condition, subordinate factor, -bestand-teil, m. secondary ingredient or constituent, -betrieb, m. by-operation, secondary process. 

Figure 3.2 (left) typical CEM (right) CEM operation (secondary electron emission). 

Since PEM, like living organisms, need water to function and the amount and state of water are critical for an efficient operation, secondary requirements on this type of fuel cell membranes emerge. These include the necessity of sufficient humidification and the ability to retain water under operation conditions. Associated problems under fuel cell operation include the electroosmotic transport of water to the cathode side accompanied by dehydration at the anode side [45]. In the cathode the accumulation of water at high current densities, typically greater than 1 A cm-2, causes performances losses due to blocking of catalytically active sites and restriction of oxygen transport. 

Mixing different raw materials, additives, and binders, agglomerating the blend, and subjecting the product to different post-treatment methods to achieve special properties is known as material engineering. Industrial wastes can be included in such raw materials and additives can produce, for example, a fluxed feed for metallurgical operations, secondary raw materials with predetermined alloying ingredients, or smokeless fuels (Sections 6.8, 6.9, and 6.10). 

K062. . Spent pickle liquor from steel finishing operations Secondary Lead ... 

Position Normal operation Secondary pumps loss of power Valve shut in 2 s Seconday pumps Loss of power Valve shut in 3 s... 

A manually operated secondary fog spray system is attached to the lower parts of the charge and discharge elevators and will spray water on the reactor front and rear face piping Here it will serve to cool fuel elements should they become lodged in the reactor piping It will also settle particulate matter should a uranium fire occur ... 

The remaining unit operations (secondary units), which are not associated with any identified objectives or constraints, are examined next to determine if they can be attached to a dominant unit of a candidate module on the basis that the secondary unit assists the primary unit to achieve its objectives. For example, if the explicit objective of a minimum light off temperature is associated with a reactor unit and a furnace precedes the reactor, the furnace can be incorporated into the candidate module with the reactor, since the furnace helps the reactor meet this objective. Once all of the secondary units have been assigned to the modules, the resulting set of modules represents the first iteration of the flowsheet decomposition. 

Primary smelter case study Herculaneum, MO, smelter operation. Secondary smelter case study Troy, AL, smelter operation. 

The first step in determining the impact of the new air toxics programs is to simply compare the results of the facihty emission inventory to the 10- and 25-ton thresholds. For certain operations, secondary by-products may be chemically created and exist in the effluent discharge stream. H they are triggered for any one or more of the 189 HAPs, then the following provisions need to be evaluated in detail. 

Diversity for DHR in RCS-closed condition At least one SG is required to be operable (secondary side FW available) to remove residual heat (by re-flux condenser cooling mode with the presence of non condensable gas), until a prszr manway is removed. 

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