I don't know enough about pipeline history to make conclusions about their safety but here is what I know.
Tar sands spill in Kalamazoo MI over 2 years ago still hasen't been cleaned up.
Don't you think residents have the right to know if they live within a certain distance of an existing pipeline.
There are something like 2.5 million miles of various pipelines currently in use in the US. That includes 55,000 miles of "trunk" crude pipelines (bigass crude pipelines), 95,000 miles of interstate refined product pipelines (spills are WAY worse than crude) and over a quarter of a million miles of nat. gas. distribution lines (BOOM). Along with those you have a shitton of smaller gathering lines and intrastate pipelines.
But wait, it gets better. From a .gov study:
"Over 50% of the nation's pipelines were constructed in the 1950's and 1960's during the creation of the interstate pipeline network built in response to the huge demand for energy in the thriving post-World War II economy. Some pipelines were built even earlier. Approximately 3% of our gas distribution mains are made of cast or wrought iron and were built in the first half of the 20th century. Over 12% of the nations cross-country gas transmission and hazardous liquid pipelines were built prior to the 1950's."
Yet for some reason building a few thousand miles of brand new state of the art pipeline is a OMFGWTFBBQ issue. I would much rather have the brand new Keystone pipeline running through my backyard than some pipeline built in the 50's.
Oh but wait, it gets even better. Most of that 50% is exempt from Federal Regulation because they were built before the regulation was introduced and it just wasn't feasible to make them dig them all up to either comply or prove they comply and it remains that way to this day and I can understand why. So what is the easiest solution to reduce the risk associated with these old pipelines? New pipelines that increase capacity so the old ones can simply be taken offline and dismantled, abandoned, or repaired. Simply shutting them down without having the capacity elsewhere is not only unfeasible but simply won't ever happen.