A decade ago, Congress set out to make pipelines safer, but today there are more accidents on pipelines that carry gas to homes. — By Jeremy Deaton Pipelines exploded with the force of bombs, setting homes ablaze in Merrimack Valley, Massachusetts, on the evening of September 13, 2018. Columbia Gas, the local gas utility, had allowed too much pressure to build up in its aging cast-iron pipes until finally, they erupted in a series…