Research on status of full life cycle corrosion protection of petrochemical industry facilities

Author of the article:HE Gang1,2, WEI Ying3, CHEN Hongjin4, LUO Yanli5, XI Kefeng6, CHEN Binyuan7

Author's Workplace：1. Sichuan University of Science and Engineering, Zigong, Sichuan, 643000, China; 2. Graduate School of Management of Technology, Pukyong National University, Incheon, Busan, 48547, Korea; 3. Department of Mineral Mill Stream Development, PetroChina Southwest Oil & Gasfield Company, Suining, Sichuan, 629000, China; 4. Shunan Gas Mine, PetroChina Southwest Oil & Gasfield Company, Luzhou, Sichuan, 646000, China; 5. Sichuan Changning Natural Gas Development Co., Ltd., Chengdu, Sichuan, 610051, China; 6. PetroChina Southwest Oil & Gasfield Company, Chengdu, Sichuan, 610051, China; 7. CPECC Southwest Company, Chengdu, Sichuan, 610041, China

Key Words：Corrosion; Life cycle; Maintenance; Service life extension; Assessment

Abstract：China’s dependence on imported oil is as high as 60.6%. The increase in crude oil processing volume and the diversification of crude oil varieties have brought serious corrosion impact on the facilities in petrochemical industry. This paper aims to find out the existing issues of corrosion protection in petrochemical industry and put forward the corresponding countermeasures. With the goal of “life cycle corrosion engineering and control” as the main theme, based on the corrosion survey data and relevant data of 35 state-owned enterprises in the petrochemical industry, we analyzed the existing problems in the field of corrosion management and control in the petrochemical industry. Then we proposed countermeasures including design improvement, new technology development and new material application, enhance staff training, strengthen the manufacturing supervision, testing, monitoring, maintenance and engineering construction quality, strict implementation of the standards and specifications; and establish a sound database, filing and evaluation system and decision-making system. On top of that, we implemented effective PDCA cycle with the standard of “full life cycle of corrosion engineering and control”as the main theme to achieve complete corrosion management in terms of prevention and control. A spiral climbing effect is achieved in upgrading the performance of corrosion control and lowering the capital cost of petrochemical industry. The study can provide reference for the improvement of technology and management in petrochemical industry, and is of great significance in guiding enterprises to improve the effectiveness of corrosion management in accordance with the “life cycle corrosion engineering and control” standard.