API Std 2217A

Guidelines for Safe Work in Inert Confined Spaces in the Petroleum and Petrochemical Industries, Fourth Edition
standard by American Petroleum Institute, 07/01/2009

API RP 936

Refractory Installation Quality of Pressure Guidelines-Inspection and Testing Monolithic Refractory Linings and Materials
standard by American Petroleum Institute, 10/01/1996

API TR 17TR8

High-pressure High-temperature Design Guidelines, Second Edition, Includes Errata 1 (2019) and Addendum 1 (2019)
standard by American Petroleum Institute, 03/01/2018

API Std 653

Tank Inspection, Repair, Alteration, and Reconstruction, Third Edition, Includes Addendum 1 (2003), Addendum 2 (2005), Addendum 3 (2008), and Errata (2008)
standard by American Petroleum Institute, 12/01/2001