1 Scope

1.1 These requirements provide performance test data and performance criteria to evaluate LPG and/or natural gas fueled stationary engine generator assemblies for installation less than the required spacing by the Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines, NFPA 37, Engines – General Requirements.

1.2 The performance conditions represented by these tests simulate a small gas leak and a high flow catastrophic gas leak that results in the ignition of the fuel source (LPG, natural gas) and combustible components within the generator assembly enclosure.

1.3 These requirements do not apply to generator assemblies located in structures or generator assemblies located on roofs.

Summary of Topics

This is the First Edition of ANSI/UL 2200A, Standard for Fire Containment Testing of Stationary Engine Generator Assembly Enclosures, dated November 20, 2025.