Process water building

The control console, located in the center.of the reactor control room (see Section 5.7.1), is made up of five unit panels laid out on a circular arc of 51 in. radius and extending some 240°. At the center of this arc, the operator will be seated in a movable chair, giving him easy access to the information and control elements spread out on the panels. At his left hand is a telephone by which he can communicate with other control and instrument centers, such as the one in the Process Water Building. By looking over the top of the console, which is 40 in. from the floor, he can see the instrument panels, particularly panels D to H, standing in an arc directly in front of him. 

In the separation of the major systems of control and instrumentation for the reactor and.the reactor heat removal processes, two major control and instrument centers are provided. These major control centers are located in the Reactor Building and in the Process Water Building. The reactor is controlled from the former, while the latter center, which is primarily for the control and instrumentation of process-water flow through the reactor, includes the instrumentation of the locally controlled reactor cooling-air system. A number of the supporting process systems are like the cooling-air system in that they have- locally controlled equipment but have some instrumentation extended to one or both of the major control centers. 

Process Water Building - Control Board Layout and Instrument Schedule... 

The. water leaving the reactor enters the seal tank in the Process Water Building. In the seal-tank entrance there is a radiation recorder for detecting fission breaks. The seal tank is provided with a demineralized-water inlet line and meter for supplying and metering make,-up water. It also is provided with a temperature recorder, and a levelr indicating alarm. AH pumps... 

All piping and pumps are shielded with about 1 ft of concrete, and the valve control handles are extended through the shielding. All instrumentation and controls for maintaining proper process-water temperatures and flows are centralized in the Process Water Building instrument room. Overhead cranes and removable floor slabs provide accessibility- to shielded pipes, valves, pumps, etc. Each pump cubicle is shielded from it neighboring cubicle so that repairs can be made during reactor operation. 

Mounted in the concrete pipe line leading to the Blower and Fan House is a venturi tube for determining the flow rate through the system. The flow rate is indicated on a panel in the Blower and Fan House. Since the Blower and Fan House is an unattended station which will have periodic inspections only, the information for operation of thd reactor air system is transmitted to the Process Water Building and the Reactor Control Boom. The Process Water Building serves, as the center for operational infoi mation. on the reactor air system. The flow rate is therefore recorded at the control panel in the Process Water Building, and there ar.e low flow rate alarms at both this panel, and the panel in the Reactor. Control Boom., Besides the. above, the ye nturi information is transmitted >to. the reactor control system to automatically shut the reactor down on failureof the air system. 

The Process Water Building and working reservoir are located east and slightly north of the Reactor Building. This-location effects a reasonably close approach both to the reactor and the water supplies located in the limited area. -Effluent control,- the retention basin, and the effluent pond are in the southeast corner of the site because of the direction of the undersurface water flows. 

Sufficient space remains -for future additions to the Reactor Building wing, Process Water Building, Cooling Tower, Water Treatment Building, and Boiler House. Also, space is provided for future facilities such as an administration buiIding, reactor service building, cafeteria, and hot laboratory. 

Inorganic chemicals may also be used. Beatonite may be used as a flocculant ia combination with polymer treatmeat. Alum, oace a common coagulant, is less used because its concentration can build up ia recycle water. Alum oftea biads ink to fibers and iacreases the difficulty of deinking. Removal of the very small flexographic ink particles ia process water is difficult. Ultrafiltratioa (qv) has beea proposed for removing these very small dispersed ink particles (53). 

Dicarboxylation reactions of alkenes can be carried out such that predominately 1,2-addition of the two ester functions occurs (equation 61). The reaction takes place under mild conditions (1-3 bar, 25 C) in alcohol. It is stoichiometric in palladium, since the palladium(II) catalyst is reduced to palladium(O) in the process, but by use of an oxidant (stoichiometric copper chloride or catalytic copper chloride plus oxygen equation 62 and 63) the reaction becomes catalytic in palladium. In the reoxidation process, water is generated and the build-up of water increases the water gas shift reaction at the expense of the carboxylation. Thus a water scavenger such as triethyl orthoformate is necessary for a smooth reaction. 

Dixit S., Cappellen P. V., and Bennekom A. J. V. (2001) Processes controlling solubility of biogenic sihca and pore water build-up of silicic acid in marine sediments. Mar. Chem. 73, 333-352. 

Water vapor that cools will turn back into a liquid. Cold metal or glass can help speed up this process. Little drops of water build up on a cold surface as the molecules in the water vapor begin to move more slowly. Condensation is the buildup of little drops of water. 

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