[grandpa jones]

ahh, thanks for that. Officials learned Friday that data from an internal sensing device found 16 anomalies in 12 locations

[thackney]

Officials learned Friday that data from an internal sensing device found 16 anomalies in 12 locations

From another source:

BP's decision to close down the Prudhoe Bay field follows the analysis of data from inspections along the pipeline system in late July, which revealed 16 anomalies in 12 locations in an oil line on the eastern side of the field, BP said. BP operates 22 miles of oil transit lines at Prudhoe Bay and has inspected about 40 percent of the system.

The "internal sensing device" is a smart pig.