The latest edition of NACE RP0472 (2022) may include updates on:
The updated NACE RP0472 standard includes several significant changes and additions:
for weld deposits to compensate for portable testing variations, which is more stringent than the 22 HRC limit often cited in upstream standards like MR0175. Heat-Affected Zone (HAZ)
: It maintains a maximum weld deposit hardness of 200 Brinell (HBW) for P-No. 1 steels, which is more stringent than the 22 HRC limit found in other standards like MR0175 to account for production testing variations.
PosiTest DFT gauge, holiday detector, feeler gauge set, replica tape, and the AMPP/NACE Coating Inspector Level 2 certification (recommended).
The standard covers both new fabrication and repair welds, addressing various cracking mechanisms including and Alkaline Stress Corrosion Cracking (ASCC) . Key Technical Requirements
The NACE RP0472 PDF provides valuable insights and practical recommendations for: