Environmental Protection Agency – Steam and Hot Water Boiler Regs
http://www.epa.gov/air/oaqps/combustion/actions.html
National Board for Boilers and Pressure Vessels
http://www.nationalboard.org/
Vibration Institute
http://www.vi-institute.org/
Compressed Air and Gas Institute
http://www.cagi.org/
Heat Exchange Institute
http://www.heatexchange.org/
National Instrument Institute
http://www.nist.gov/index.html
American Society of Mechanical Engineers
http://www.asme.org/
American Boiler Manufacturers
http://www.abma.com/
American Water Works Association
http://www.awwa.org/index.cfm?showLogin=N