Hydrocarbon Refrigerants GuideHydrocarbon Refrigerants – A Study Guide for Service Techniciansfrom RSES has been developed to assist the refrigeration technician in understanding the requirements to safely maintain and service systems that utilize flammable refrigerants, including R-290, R-600a, and R-441A, currently approved under the Environmental Protection Agency’s Significant New Alternatives Policy (SNAP) program. Visitwww.rses.orgfor more information.