Ensuring Safe, Reliable & NBIC-Compliant Pressure Equipment Repairs Pressure vessels, heat exchangers, boilers, and other pressure-retaining equipment operate under high pressure and temperature conditions. Over time, corrosion, erosion, fatigue, or mechanical damage may require repairs or alterations. To ensure these repairs are performed safely and meet regulatory requirements, they must comply with the National Board Inspection Code (NBIC Part 3) and be carried out by orga