国内外储罐泄漏检测技术现状

A review on status of domestic and foreign tank leakage detection technologies

我国普遍存在储罐超期服役问题,储罐泄漏风险大。应用先进的储罐泄漏检测技术,在储罐泄漏初期采取处置措施,有助于提高储罐设施的安全性和可靠性。分析了目前国内广泛应用的储罐泄漏检测方法的优缺点,包括常规的人工检尺方法、新发展的储罐基础钻孔检测方法和双层罐底板泄漏检测方法,以及适用于停运储罐的开罐检测方法。介绍了美国储罐泄漏检测的技术标准、先进经验和推荐做法,包括漏油感应电缆、电阻探漏法、储罐泄漏初期处置措施以及储罐泄漏定量风险评价等。最后,提出了选择适宜储罐泄漏检测技术的建议,以及借鉴美国标准完善国内储罐泄漏检测技术的建议。

In China, over-serviced tanks are commonly used with high risk of leakage. In order to improve the safety and reliability of tank facilities, it is necessary to apply advanced tank leakage detection technology and take measures at the early stage of leakage. In this paper, the tank leakage detection methods that are widely used in China were analyzed in terms of their advantages and disadvantages, including the conventional manual measurement method, the newly developed tank foundation boring detection method and double-bottom leakage detection method, and the open tank detection method which is applicable for suspended tanks. Then, technical standards, advanced experience and recommended practices of American tank leakage detection were introduced, including oil leakage induction cable, resistance leakage detection method, measures at the early stage of tank leakage, and quantitative assessment of tank leakage risk. Finally, recommendations were proposed to select tank leakage detection technologies appropriately and improve domestic tank leakage detection technologies by referring to American standards.