AHJ = Authority Having Jurisdiction. The one who enforces an adopted standard or regulator, usually appointed by the law that adopts a standard. For example in Alberta, Canada, the AHJ for boilers, pressure vessels, and piping systems is the Alberta Boilers Safety Association.
http://www.absa.ca/
Hello all. I have a question regarding AHJs for pressure vessels and pressure piping in the United States; mainly, do you even have any? We're an engineering firm from Canada who is starting more and more work in the US. In Canada each province has a well defined AHJ who reviews and approves...