In Arizona, the Industrial Commission enforces the Arizona Boiler Rules through ADOSH’s Boiler Safety Section. Since July 2017, authorized third-party inspection agencies have performed certificate and in-service inspections, and power boilers need an annual internal certificate inspection. We open, clean and prepare boilers before the inspector arrives, and we carry out repairs and alterations the inspection calls for under our R stamp.
Phoenix heating loads are small, so most boilers here work year-round on hot water, process, laundry and sterilization. The city’s very hard water does more damage than the weather. Scale builds on tubes, raises stack temperatures and leads to overheated metal. Controlling it means looking at feedwater treatment, chemical feed and blowdown as well as cleaning and retubing the boiler.