六○六信箱油库的外输埋地管道建于1968年,1971年4月投产。起初对营道防腐的重要性认识不足,对埋地管道未采取有效的防腐措施,故造成1978、1979年两次管道穿孔,分别跑油20.729t、11.579t。经开挖检查,均为电化学腐蚀。 为吸取教训,加强管道防腐,对主管线采用了外加电源阴极保护技术,于1979年竣 Six hundred and sixty mailbox mailbox buried underground pipeline was built in 1968, put into operation in April 1971. At first, they did not know enough about the importance of anti-corrosion camp and did not take effective anti-corrosion measures on the buried pipe. As a result, two pipe perforations were made in 1978 and 1979, respectively running oil 20.729t and 11.579t. After excavation inspection, are electrochemical corrosion. In order to learn lessons to strengthen pipeline corrosion, the main line using an external power supply cathodic protection technology, completed in 1979