Last week, when the U.S. Nuclear Regulatory Commission reported a security violation at Three Mile Island, a spokesman for the agency described the preliminary findings as "greater than very low safety significance."
That, of course, is a semantic gyration that seems to be endemic to government, or at least government how it's run these days.
Parsing the phrase, you can rest assured that the unnamed violation was not of "very low safety significance." Other than that, who knows? Was it a slight annoyance? Was it something that should cause grave concern? Was it head-for-the-hills-the-world's-going-to-end alarming?