Table 2: Liquid v. Transmission Systems Characteristics
Table 2: Liquid v. Transmission Systems Characteristics
| Hazardous Liquid pipelines | Gas transmission pipelines |
|---|---|
| ~ 300 operators | ~ 900 operators |
| ~ 50 large operators | ~ 90 large operators |
| ~ 350 accidents/year | ~ 130 incidents/year |
| More of infrastructure data in annual reports | Less infrastructure data in annual reports |
| Integrity Management inspection data for most operators | Less Integrity Management inspection data for operators |
| Overall - more data to work with | Overall - less data to work with |
SOURCE: U.S. Department of Transportation, Pipeline and Hazardous Materials Safety Administration, http://www.phmsa.dot.gov.