A vertical atmospheric external floating roof storage tank with a volume of 20 000 m3 has been in service for more than 45 years.Recently,leakage was found in the roof of the external floating roof storage tank.In order to find the leak part and eliminate safety risks,magnetic leakage detection technology was adopted to detect the roof plate of the crude oil atmospheric pressure storage tank,it was found that there were a lot of point corrosion in the roof of the storage tank,including 3 corrosion perforations.According to the test results,combined with the actual situation of the site,the corrosion causes of the storage tank roof are analyzed,and targeted corrosion protection measures are proposed to ensure the safe operation of the storage tank.
NETL
NSTL
万方数据
