Last year I was attending some continuing education for my hazardous materials work. The instructor was outstanding until he went on his tirade against Nitrogen (N2). He was factually correct when he stated that N2 was a leading killer within confined spaces, but he went off the rails when he tried to convince me that N2 is a toxic hazard and it is this toxic hazard that is killing workers. So I looked around the room and there was one or two others who were looking around the room like what the h_ll am I hearing. So being me, I had to ask the question… So what is the PEL/TLV for N2? What is the IDLH of N2? (for the non-members, this is a TRICK question!)
