石油学报 ›› 2012, Vol. 33 ›› Issue (1): 157-163.DOI: 10.7623/syxb201201023

• 石油工程 • 上一篇    下一篇

原油储罐检修周期

帅 健 许学瑞 韩克江   

  1. 中国石油大学机械与储运工程学院 北京 102249
  • 收稿日期:2011-06-05 修回日期:2011-09-08 出版日期:2012-01-25 发布日期:2012-03-22
  • 通讯作者: 帅 健
  • 作者简介:帅 健,男,1963年8月生,1982年获武汉化工学院学士学位,现为中国石油大学(北京)教授、博士生导师,主要从事油气储运安全和工程力学的教学与研究。

Overhaul interval of crude oil tanks

SHUAI  Jian XU Xuerui HAN Kejiang   

  • Received:2011-06-05 Revised:2011-09-08 Online:2012-01-25 Published:2012-03-22

摘要:

基于极值统计原理,提出了原油储罐检修周期的评价方法,包括储罐腐蚀检测数据统计、腐蚀速率分析和不停产检修可使用寿命评估方法等。根据某原油库18座在役储罐的腐蚀检测数据的统计分析,得出储罐底板、壁板的减薄量及其腐蚀速率的统计值,评估了这些储罐的可使用寿命。结果表明,储罐的可使用寿命在8年以上,适当加厚底板或采取其他措施可延长储罐的检修周期。基于评价结果,建议延长原油储罐的停产检修周期,特别是将原油储罐的第二次及以后的检修周期由SY/T 5921—2000标准中规定的5~7年延长至8~10年。

关键词: 原油储罐, 检修周期, 剩余寿命, 腐蚀, 评价

Abstract:

On the basis of the extremum statistical principle, a method to evaluate the overhaul interval of crude oil tanks was put forward, which includes statistical analyses of corrosion inspection data, the determination of corrosion rates and the assessment of serviceable life of on-line maintenance. A statistical analysis of corrosion inspection data for 18 in-service tanks of a crude storage was then made using this proposed evaluation method. Corrosion rates of tank floors and walls were statistically determined and their serviceable life was assessed. The results show that the serviceable life of the most tanks exceeds 8 years, and thickening the floor of tanks or taking other measures can extend their serviceable life. Based on these evaluation results, we recommended that the overhaul interval should be extended, especially the second and subsequent overhaul interval should be extended from 5~7 years specified in Standard SY/T 5921 to 8~10 years.

Key words: crude oil tank, overhaul interval, residual life, corrosion, evaluation