API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

RISK-BASED INSPECTION METHODOLOGY, PART 2, ANNEX 2.C—LEVELS OF INSPECTION EFFECTIVENESS 2.C-27
Inspection Effectiveness Tables for High Temperature Hydrogen Attack
Damage
2.C.11.1
Use of the Inspection Effectiveness Tables
Currently there is no LoIE for HTHA damage. Please refer to Part 2, Section 19, which has a discussion on
HTHA as it pertains to this document. It is the owner–user’s responsibility and accountability to develop an
effective inspection program for assets potentially affected by HTHA and document their methodology,
investigation, and results.