These documents highlight changes made to NACE MR0175/ISO 15156 second edition 2009. Additions are indicated with Bold underlined text and deletions are indicated by strike through text. The addition of text to this document can result in page numbers not agreeing with the table of contents.

These documents are not the ANSI/NACE MR0175/ISO 15156 standard and shall not be used in place of the standard. Neither NACE International, its officers, directors, nor members thereof accept any responsibility for the use of the information contained herein. No authorization is implied concerning the use of the material, nor is a warranty expressed or implied concerning the suitability of specific information or specific applications. The information is advisory only and its use is solely at the risk of the user.