Which standard can be referenced for conducting nondestructive leak testing?

The appropriate standard for conducting nondestructive leak testing is ASTM E779. This standard specifically outlines the methodology for evaluating the air leakage of commercial building envelopes using a blower door test. It is recognized within the context of building performance and energy efficiency assessments, making it a critical reference for ensuring that a building's air sealing meets the necessary performance criteria.

While CEN Standard 1779, RESNET Standards, and the CIBSE Applications Manual are relevant to various aspects of building performance, they do not specifically address nondestructive leak testing in the context of air leakage measurement like ASTM E779 does. CEN Standard 1779 deals more with pressure testing in general terms, and RESNET primarily focuses on residential energy efficiency ratings. The CIBSE Applications Manual is oriented toward building services design, which makes it less applicable for specific testing protocols like air leakage measurement. Therefore, ASTM E779 is the correct reference for nondestructive leak testing.