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Comments on Temperature Data <br /> A brief comment on the complex behavior of the reservoir level during <br /> temperature and pressure changes in a double wall pipe is in order. The effects are <br /> interactive and difficult to quantify. Pressure and temperature changes in one part of <br /> the line will affect the other parts as well. For example, when increased pressure in the <br /> primary pipe causes expansion of the pipe size, the effects are transmitted to the <br /> secondary containment which also changes in size. These effects are not easily <br /> quantified and may be the source of the apparent variability in the raw data. In this <br /> testing, equilibrium conditions were used to ascertain the effects of both long-term and <br /> short-term temperature changes. <br /> The temperature of the interstitial space was monitored using a thermocouple <br /> between the secondary wall and the outer insulation and is indicated by "T int". The <br /> temperature of the water circulated through the primary pipe was monitored by a <br /> thermocouple in the circulation reservoir and is indicated by "T circ". The level was <br /> monitored by inserting a steel ruler coated with water finding paste into the reservoir at <br /> periodic intervals. <br /> Pressure Effects <br /> 10.4 <br /> 10.35 - - y=0.000-2 x+ 1- <br /> 0.297-10.3 <br /> c <br /> �Test#1 <br /> > 10.25 - Test#2 <br /> d <br /> J <br /> 10.2 _. <br /> y=0.0002 + 10.185 <br /> 10.15 — <br /> 10.1 <br /> 0 20 40 60 80 100 <br /> Pressure(psig) <br /> Figure D-1. Effects of pressure in the primary pipe on the brine level in the <br /> reservoir. <br />