![]() ![]() ![]() Texas has required CO monitoring in boiler rooms, and we may see more of this local action. ![]() While CO is a serious issue, it is a not strictly a pressure vessel issue and not easily resolved. ![]() The CO issue has been difficult for this group, with strong opinions on both sides. H) Supplement 9 generated for “High-Temperature Water Boilers.” G) Supplement 8 generated for “Installation of Pressure Vessels for Human Occupancy.” B) “Pressure Relief Valves – General” new requirements were added to remove covers, caps, plugs, wires, or restraining devices used for shipping/transporting pressure relief valves prior to a valve’s installation for both power boilers and heating boilers (2.9.1 g, 2.9.1 h, 3.9.1 a, and 3.9.1 b).Ĭ) “Modular Steam Heating and Hot Water Heating Boilers” revised maximum ratings (3.7.8.1).ĭ) “Pressure Relief Valve Discharge Piping” added new rating requirements (3.9.1.5 c, d, and e).Į) “Liquid Carbon Dioxide Storage Vessels” have revised carbon dioxide gas detection system requirements (S3.4).į) “Thermal Process Heaters” have updated overpressure protection requirements (S5.7). ![]()
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