PG&E is using new technology to inspect underground natural gas lines.
The utility company on Thursday launched an internal inspection of Pipeline 101, which runs along the Peninsula and into the South Bay, by using what they call "The Smart Pig."
Pipeline 101 is nearly 100 years old, PG&E said. The inspection, which is being tracked by a computer, will go for 12 miles from Milpitas to Palo Alto.
"It really helps us understand the pipeline from the inside of the pipeline," said Sumeet Singh of PG&E.
Results from the test will take about two months.