There are a number of standards used in Oil and Gas Industries to qualify coatings. These standards can be API standards, EN standards and NACE standards that are specific to type of equipment and service conditions. Of the various test standards that oil companies employ to qualify organic liquid coatings, two standards are reviewed in this study. 1) NACE TM0185 - Evaluation of Internal Plastic Coatings for Corrosion Control of Tubular Goods by Autoclave Testing. 2) NACE TM0174 - Laboratory Methods for the Evaluation of Protective Coatings and Linings Materials on Metallic Substrates in Immersion Service. These two tests are included in the list of tests to qualify polymeric resin based coatings that are used in equipment such as separators, which are exposed to demanding conditions in terms of temperature, pressure, as well as exposure to sour gas and hydrocarbon gas and salt water. The test parameters for NACE TM 0185 are: temperature of exposure, pressure, duration of test, decompression rate, composition of gaseous environment as well as number of exposure cycles. The test parameters for TM 0174 are: temperature, liquid composition and time duration. In this paper, we review how major oil and gas corporations such as Aramco, Petrobras, Maersk and TOTAL utilize these two tests. We will show that there is a substantial difference in the test protocol and acceptance criteria employed by these companies.