: Perhaps the most effective tool, PWHT involves heating the completed weld to specific temperatures to "relax" the internal stresses caused by the thermal shock of welding and to temper hard microstructures.
NACE RP0472 is a recommended practice (RP) developed by the National Association of Corrosion Engineers (NACE) International. The document provides guidelines for the design, installation, and maintenance of cathodic protection (CP) systems for metallic materials in contact with soil and natural waters. The standard focuses on the prevention of corrosion on buried or submerged metallic structures, such as pipelines, storage tanks, and water treatment plants.
Certain welding processes like SMAW with E60XX/E70XX or GTAW with specific ER70S fillers may be exempt from production hardness testing under specific conditions. How to Access the PDF NACE Standard RP0472-2005 - ANSI Webstore
Including caustic cracking and amine cracking. Key Requirements of NACE RP0472
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