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This worst-case level change based on all of the data 0.0076 inches per deg F ( ) was (X) was not sufficient to cause an alarm. Temperature Effects With Trapped Vapor The volume of air trapped in the interstice was 300 ml. The nominal temperature of the hot product circulated through the line during the test was 100 deg F. A total volume of 60 - 70 gallons passed through the line during the test. The initial ambient temperature of the liquid in the interstice was 66 deg F. The final interstitial temperature was 97 deg F The temperature difference was 32 deg F. The level change in the reservoir was 0.47 inches. The level change was determined to be 0.148 inches per deg F. The nominal temperature of the cold product circulated through the line during the test was 32 deg F. A total volume of 60 -70 gallons passed through the line during the test. The initial temperature of the liquid in the interstice was 70 deg F. The final interstitial temperature was 39 deg F The temperature difference was 31 deg F. The level change in the reservoir was 0.38 inches. The level change was determined to be 0.0123 inches per deg F. This worst case level change of 0.0148 inches per deg F ( ) was (X) was not sufficient to cause an alarm. Time to Alarm For a Level change of 5 inches The time to produce an alarm with a 0.1 gal/h leak in the primary pipe is 1.75 hrs. The time to produce an alarm with a 0.1 gal/h leak in the secondary pipe is 1.75 hrs. Effects of a Catastrophic Leak The rate of flow through the interstice at a distance of 21 ft from the reservoir was 0.2 gal/min at a pressure of 40 psi. At this flow rate, the time to produce an alarm is less than one minute. The rate of flow through the interstice at a distance of 4 ft from the reservoir was 1 gal/min at a pressure of 40 psi. At this flow rate, the time to produce an alarm is less than 20 seconds. Liquid Filled Interstitial Monitoring— Results Forms Page 3 of 4