Defect Assessment of 3000 M3 Sphere Storage Tank for Propylene

[摘要] During the regular inspection of 3000 m3 sphere storage tank for propylene, 15 defects are detected, including 11 internal surface cracks and 4 embed cracks. One of the surface cracks can up to 80mm in length direction. For these defects, the integrity of sphere storage tank with defects is evaluated according to GB/T 19624-2004. To show the difference between the domestic standard and international standards, API 579 is also adopted to perform the Fitness-for-Service assessment. The safety margin is discussed.

[发布机构] Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, China^1;Institute of Process Equipment and Control Engineering, Zhejiang University of Technology, Hangzhou, China^2;Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province, Hangzhou, China^3

[效力级别] 无线电电子学 [学科分类] 材料科学（综合）

[关键词] Defect assessment;Domestic standards;Fitness-for-service assessment;Internal surfaces;International standards;Regular inspections;Safety margin;Surface cracks