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05/0412009 15:44 9163712450 BZ MANITANENCE PAGE 13:'17
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<br />X591'e-hmtr.: October 2%, 2004.
<br />RvA,don oats: M'ay 2, 7_01)5
<br />Western Fiberglass, Inr.
<br />Co -Flow Hydraulic interstitial Monitoring System
<br />CONTINUOUS tNTERSTITIAL MONITORING MMOD (LIQUID VILLED)
<br />Certification;
<br />Certified as a continuous, liquid -filled Interstltlal space leak detcctionsystem for use only with Western Fiberglass, Irrcrlauble
<br />walled/coaxlal flexible pfpellnes:
<br />M"Imum lengthis 200 feet.
<br />Na restrictions on pipeline diarpet-er,
<br />Operating Principle;
<br />Similar to-tl'te methodology that has been applied to liquld-filled interstitial double walled tanks,
<br />Propylerle glycol Is used to fill the Interstice.
<br />Two r—%mimare used to contain the liquid, Onto at each end of the system: The reservolr atcne end is closed to the atrricsphere,
<br />includes a valve that Is used to FII the system, and is designed to operate at a lower elevation than the other reservoir. The reservol
<br />it the other end Is open at the top and contains a dual -point level sensor.
<br />The dual-polWovef sensor system monitors the liquid level in the Ih1: rstil:W reservoir and provides an alarm if the liquid level is
<br />either too nigh (ingress of liquid). or too low (egress or liquid),
<br />The: method must be used with a duai-point sensor system that will properly !it into the reservoir, is compatible with the Inter.-Atial
<br />1104, and fs on the! NWGLDE list.
<br />Sensors can he used to shut down the turbine system and/or alert the operator that a potential prablern exists..
<br />Alarm Conditions:
<br />*Time to alarm is based on evaluations conducted with 100% glycol solution and a leak. (liquid egress) 190 feet frzim the highest
<br />reservoir, Leaks closer to the highest elevation reservoir, and the use of a diluted gycol solution, will shorten alarm times. Both
<br />theoretical calculations and laboratory measurements conn. -m that dilution of the propylene glycol used In the interstice of the wFG
<br />system will, produce a significant reduction in the alarm time. This system has not been evaluated far locations with temperatures
<br />outside the range of .32, to ,.100 degrees Fahrenheit.
<br />*Time to alarm for a catastrophic primOry pipe failure with a pressure of 40 psi Is 2C seconds at a distance of'10 feet from the
<br />reservoir and 84 minutes at a distance or 190 feet. This is based on a 5-inch.spacing of the'Ibat sensors.
<br />Calibration*
<br />Equipment requlres no calibration other than to Insure the upper reservoir is half full.
<br />The electronics must be calibrated and maintained in accordance with the sensor/monitoring equipment 4IStruC:ti0n6.
<br />Comments:
<br />Pipeline fittings with Interstitial comMunir,1tion tutting must only be located In sumps or pump pits— direct burial is not permitted.
<br />`he liquid level in the reservoir must be at least 20 Inches above the water table.
<br />The interstice must be filled from She ktw point In the pipeline to minlmlze trapped air,
<br />http://%,ww.w,,tterbot,ttds.c;a.gov/Water__issue,,; 116/2009
<br />Time to Alarm's (hours) for 5 -Inch Sensor Spacing
<br />Time to Alarm* (hours) for 3 -Inch Sensor. Spacing
<br />as a Function of Leak Rate for Various Reservoir
<br />zLq a Function of Leak Rate for Various Reservoir
<br />i-eak.Rate
<br />Diameters in
<br />Diameters in
<br />h
<br />3.75
<br />3
<br />2,87
<br />1-s
<br />3,75
<br />3 7.87
<br />I
<br />0.05
<br />4.8
<br />3.0
<br />2,8
<br />,1.4
<br />0.76
<br />2.9
<br />1.8 1.7 0.8
<br />0;5
<br />0.10
<br />2.4
<br />1.5
<br />.1.4
<br />0.68
<br />4.38
<br />1.9 _,
<br />.. 0.91 0.84 0:41
<br />p,23
<br />..
<br />0.20
<br />3.2
<br />rJ.7b
<br />O.�G
<br />G.31
<br />0.19
<br />0.71
<br />,0.46 0.43. a..2o
<br />aa?
<br />*Time to alarm is based on evaluations conducted with 100% glycol solution and a leak. (liquid egress) 190 feet frzim the highest
<br />reservoir, Leaks closer to the highest elevation reservoir, and the use of a diluted gycol solution, will shorten alarm times. Both
<br />theoretical calculations and laboratory measurements conn. -m that dilution of the propylene glycol used In the interstice of the wFG
<br />system will, produce a significant reduction in the alarm time. This system has not been evaluated far locations with temperatures
<br />outside the range of .32, to ,.100 degrees Fahrenheit.
<br />*Time to alarm for a catastrophic primOry pipe failure with a pressure of 40 psi Is 2C seconds at a distance of'10 feet from the
<br />reservoir and 84 minutes at a distance or 190 feet. This is based on a 5-inch.spacing of the'Ibat sensors.
<br />Calibration*
<br />Equipment requlres no calibration other than to Insure the upper reservoir is half full.
<br />The electronics must be calibrated and maintained in accordance with the sensor/monitoring equipment 4IStruC:ti0n6.
<br />Comments:
<br />Pipeline fittings with Interstitial comMunir,1tion tutting must only be located In sumps or pump pits— direct burial is not permitted.
<br />`he liquid level in the reservoir must be at least 20 Inches above the water table.
<br />The interstice must be filled from She ktw point In the pipeline to minlmlze trapped air,
<br />http://%,ww.w,,tterbot,ttds.c;a.gov/Water__issue,,; 116/2009
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