ASME A112.20.2 pdf download Qualification of Installers of Firestop Systems and Devices for Piping Systems 1 GENERAL1.1 Scope This Standard establishes minimum requirements,identified by industry consensus, for the training andqualification of installers of firestop systems and devicesfor piping systems. The qualifications under this Standard are restrictedto those that are required by this Standard, the modelbuilding and plumbing codes requirements for...