Augmenting MFL Tools with Sensors that Assess Coating Condition
| 项目名称： | Augmenting MFL Tools with Sensors that Assess Coating Condition |
| 摘要： | External coatings are routinely used to protect transmission pipelines from corrosion; however, coatings may degrade or disbond over time enabling corrosion to occur. Transmission pipeline operators often use magnetic flux leakage (MFL) in-line inspection tools to detect metal loss corrosion defects. Rather than finding the cause of a problem, failure of the coating within a corrosive environment, MFL corrosion surveys only find the result of the problem, corrosion defects that may permanently alter the pressure carrying capacity of the pipeline. Stress corrosion cracking (SCC) can be detected using in-line inspection technology, but the availability of tools is limited and the cost of inspection is high compared to MFL inspection. SCC almost always occurs at disbonds - direct coating assessment could indicate future problems that could degrade the serviceability of the pipeline. The objective this work is to develop new sensors to detect external coating disbondment that could work with currently available in-line inspection tools for minimal additional cost to perform the inspection. As part of this work, the capability of this sensor will be demonstrated at an in-line inspection vendor facility. The value of a successful outcome of this project would be the ability to use a single MFL in-line inspection run to detect and size corrosion locations and assess coating condition for the entire pipeline. |
| 状态： | Completed |
| 资金： | 319049.00 |
| 资助组织： | Pipeline and Hazardous Materials Safety Administration |
| 项目负责人： | Mataich, Joseph |
| 执行机构： | Battelle Memorial Institute |
| 开始时间： | 20060915 |
| 实际结束时间： | 20090309 |
| 主题领域： | Maintenance and Preservation；Pipelines；I30: Materials |
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