scope:

This NACE standard recommended practice provides the current technology and industry practices for mitigating corrosion under thermal insulation and fireproofing materials, a problem termed corrosion under insulation (CUI) in this standard. Because this corrosion problem has many facets and affects several technologies, a systems approach has been adopted. This standard is intended for use by corrosion-control personnel and others concerned with the corrosion under insulation and/or fireproofing of piping and other plant equipment. This concerns chiefly the chemical process, refining, and power generation industries.

This standard is organized into sections by function. Each section was written by specialists in that subject. These specialists are industry representatives from firms producing, specifying, designing, and using thermal insulation and fireproofing products on refinery and petrochemical equipment and piping.

This standard was originally prepared in 1998 by NACE Work Group T-5A-30a on Corrosion Protection Under Insulation, with the assistance of Task Group T-6H-31 on Coatings for Carbon and Austenitic Stainless Steel Under Insulation and ASTM(Footnote 1) Committee C-16.40.3 on Corrosion Under Insulation. Work Group T-5A-30a supported NACE Task Group T-5A-30 on Corrosion Under Thermal Insulation, a component of NACE Unit Committee T-5A on Corrosion in Chemical Processes. The standard was reaffirmed in 2004 by Specific Technology Group (STG) 36 on Process Industry - Chemicals. This standard is issued by NACE under the auspices of STG 36.

Footnote 1 - ASTM International (ASTM), 100 Barr Harbor Dr., West Conshohocken, PA 19428-2959.