Defect Assessment of 3000 M3 Sphere Storage Tank for Propylene

作     者：Gangyi Cai Zhi Xiang Zhang Chen Yuebing Li Yufeng Ye 

作者机构：Zhejiang Provincial Special Equipment Inspection and Research Institute Hangzhou China Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province Hangzhou China Institute of Process Equipment and Control Engineering Zhejiang University of Technology Hangzhou China 

出 版 物：《IOP Conference Series: Materials Science and Engineering》 

年 卷 期：2018年第452卷第2期

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.