Deaerators pressure, decrease

Loss of supply of coolant to the deaerator would also cause a trip of the RCPs because the inlet pressure of the RCPs decreases with the water level in the deaerator. This abnormality is represented by the loss of offsite power transient where the motor-driven condensate pumps stop. Since there is a large amount of water in the deaerator, the RCPs are expected not to stop for some period after the trip of the condensate pumps. The capacity of the deaerator has not yet been determined. If it is 140 m, which corresponds with the typical design of 1,000 MWe class FPPs, the water level in the deaerator would decrease by only 7% in 10 s after the trip of the condensate pumps. In the safety analysis, it is conservatively assumed that the trip of the RCPs occurs 10 s after the condensate pump trip [5]. This transient is less severe than a total loss of reactor coolant flow accident because a reactor scram is possible before the trip of the RCPs. In the safety analysis, the reactor scram by the signal of loss of offsite power, condensate pump trip, or turbine control valves quickly closed is credited. 

Expansion of the strip after pressure release is influenced by the physical characteristics of the material to be compacted (plasticity, brittleness, particle size and distribution, particle shape, etc.), the roll diameter, the speed of rotation, and the surface configuration of the rollers. With increasing roll diameter and/or decreasing speed the expansion of compacted material is reduced due to better deaeration during densification and a more complete conversion of elastic into permanent, plastic deformation. 

Air bubbles. Carrier stream not deaerated gases are formed as a result of a chemical reaction (e.g., CO2 see Section 6.2) or due to a Venturi effect in the flow cell, caused by the sudden decrease of pressure in the flow cell, owing to a larger inner diameter of the flow cell terminals than of that of the tube used. This effect can be eliminated by inserting the connecting tubes all the way into the terminals, so that the orifices of the tubes are as close as possible to the actual cell chamber, and by... 

Add the certain compound ratio of 4,4-diphenylmethane diisocyanate to polyol, react it at 65°C for 60 min, and then a NCO group dual end prepolymer is obtained. In addition, a DMF solution of a chain extender is added as a chain-lengthening agent and it is reacted at 65°C. The consistent material is deaerated and then cast into a die, and it is dried under decreasing pressure unhl it becomes a constant temperature. 

Figure 63 compares electrochemical amplitude of the current noise (proportional to the electrochemical corrosion rate) of Type 304 SS and of titanium in deaerated 0.01 m HCl as a function of temperature at a pressure of 250 bar. The solid scpiares are the current noise for Type 304 SS and open squares are the current noise of titanium, respectively. As shown by the figure, the current noise for titanium increases with increasing temperature before the temperature reaches the critical area, then the current noise decreases with increasing temperature with a maximum, again, occurring at about 350°C. As before, the observed maximum can be explained... 

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