Isolation zone

Inflate straddle packer to about 90 psi to isolate zone of interest... 

Fig. 3. Three sections showing uranium, radium, specific conductivity and HjS data across the region of study. The locations of samples is shown in Fig. 2. Profile A does not extend into the transitional zone. The values shown for samples 7, 8 and 9 are somewhat anomalous for the area and seem to be from Isolated zones of possibly relict water. Profiles B and C show a large decrease in uranium concentration associated with the edge of the transition zone and the sympathetic variation of radium with specific electrical conductance (in /zS/cm).

BSL-3 plus Separate building or isolated zone Dedicated supply/exhaust, vacuum, systems Other requirements outlined in text. 

Irradiation sterilization—The use of ionizing radiation for the treatment of infectious waste. Isolation zone—An area adjacent to a physical barrier, clear of all objects that could conceal or shield an individual. 

FIGURE 17.1 Defining initial isolation zone and protective action distances. 

FIGURE 17.7 Thermal contours of a component on an isolated section of PCB in two configurations (a) with a solid thermal plane over the section of PCB, (b) with a 0.25 mm electrical isolation zone in the thermal plane. The isolation zone increased the component temperature by 33°C. 

Protective actions should be initialed to the extent furtliest possible, beginning with those closest to the spill site and working away from the site in the downwind direction. Again, the shape of the area in which protective actions should be taken (the Protective Action ne) is illustrated in Figure 1. In this figure, the spill is located at the center of the small circle. The larger circle represents the initial isolation zone around the spill. 

Figure I. Illustrates protective action and initial isolation zones.

Oil well cements are required to fix steel casing to the drilled borehole wall, for down-hole repairs and to isolate zones in the formation. Set retarders are required to prevent premature setting while the cement is being pumped into place through high-temperature zones. In this application, borates are used as set retarders or assists for other retarders, such as lignosul-fonates, cellulosic derivatives, and synthetic polymers. They are effective retarders for OPC and other cements. 

PERMEABILITY DISTRIBUTION To demonstrate the effect of the polymer scdution on oil recovery where permeability distribution problems exist in isolated zones, a simple two-core experiment can be described using parallel sand-packed tubes. 

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