Northern Inspection Services, LLC (NIS) specializes in Cathodic Protection, AC Mitigation, and Inspection. We provide these quality services to the Oil & Gas industry and Public Utilities across the country. Project Management of cathodic protection installations and AC interference/mitigation are two of our highest demand services. We have NACE certified engineers and technicians to meet any engineering or technical service requirements such as annual surveys, tank farm surveys, close interval or DCVG/ACVG surveys.