The National Institute of Standards and Technology (NIST) Center for Neutron Research in Gaithersburg, MD, seeks to procure optical nondestructive testing equipment to assess the health of reactor components like piping and valves. The required equipment includes two ultrasonic flaw detectors, two eddy current flaw detectors, and sixty-four total parts for transducers and probes with specific technical specifications. This is a sources sought notice for market research only and is not a formal solicitation for bids. Questions regarding the notice must be submitted by 5:00 p.m. Eastern Time on March 23, 2026. No budget or specific project performance timelines are detailed in this notice.