Application of Distributed Temperature Sensing for Perlite Settlement Monitoring System in LNG Storage Tank
The liquefied natural gas(LNG)will be stored in the cryogenic full containment storage tank.The perlite will be filled in between the inner tank and outer tank for tank insulation.The heigh of perlite may be reduced because of perlite gravity.While the heigh of perlite is less than design requirement,the heat from environment will go inside the tank,then more and more boil-off gas(BOG)will be generated which will be increase the operation cost.So one set perlite settlement monitoring system in LNG storage tank will be installed in the tank and monitor the heigh of perlite on time.If the system monitor the heigh of perlite is less than the design value,an alarm will be generated by system and sent to distributed temperature sensing(DTS)system.The operator will refill the perlite.The perlite settlement monitoring system will be descripted in this document to increase the tank operation safety level and decrease the tank operation cost.
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维普
