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PRD Test Lab

Print Date: 10/4/2023 10:21:13 PM

The National Board’s goal is to maintain the integrity of the National Board marks and symbols (NB, VR, and T/O) and the ASME Certification mark with V ,UV, UD, HV, and NV designators. By doing so, we make it possible for National Board members to rely on the presence of these marks in their efforts to protect the general public.


National Board Activities


ASME Supporting Activities


Committee Participation

The National Board supports the following technical committees:


For more information regarding the National Board Pressure Relief Department,
please Contact Us.