Atmospheric Tank Comprehensive Detection And Risk Assessment

With the rapid development of the current domestic petrochemical industry,its security problems appeared in the process of production attracted wide attention of the society.Tank is regarded as reserving raw liquid materials equipment which has high risk.Whether it can be safely used in order to avoid toxic raw material leakage and may cause serious environmental pollution phenomenon is very important.In this paper,Based on the large-scale atmospheric storage tank in a petrochemical corporation,study the method of risk assessment and tank detection three-step comprehensive research work.Through the analysis of the corrosion mechanism of different location of the storage tank and its reason,judge tank failure probability and failure consequence.According to the working process of well-planned,the field data collected by import in AST RBI software risk ratings for preliminary assessment of storage tank,drawing up the future testing plan according to the results of the risk assessment.According to the specified test plan for tank,use macroscopic inspection and testing method for the determination of ultrasonic wall thickness first.By observing the structure of tank body,measuring whether its geometry size is in accordance with the requirements,formulate reasonable proper detection scheme.Properly use the ultrasonic flaw detector to test the parts storage tank wall thickness.Put forward perfect suggestions and anti-corrosion measures and regulate inspection cycle.Secondly use acoustic emission method to analyze the effective source storage tank corrosion,leakage,actual acoustic emission on-line detection experiments.By analyzing the events of the signals collected activity,amplitude of the high and low,energy and channel number we get the size of the base plate corrosion state of the activity level.Finally use tank leakage detector to magnetic flux leakage detection of tank bottom of tank bottom,understand the system composition and the principle of instrument,set the scene inspection plan and draw floor structure diagram and mark the serial number.As far as possible to do a completely test.Intuitive understand the position of corrosion through the computer display and put forward repair and replacement advice,finally complete tank three-step comprehensive detection and risk assessment of the overall research work.