What is ISO 19277 - Petroleum, petrochemical, and natural gas industries about?
ISO 19277 is a safety standard for petroleum, petrochemical, and natural gas industries. Petroleum, petrochemical, and natural gas industries is industrial process plants were petroleum (crude oil) is transformed and refined into useful products such as gasoline (petrol), diesel fuel, asphalt base, fuel oils, heating oil, kerosene, LPG, and petroleum naphtha. ISO 19277 describes various corrosion under insulation (CUI) environments in refineries and other related industries and environments and establishes CUI environmental categories including operating temperature ranges from −45 °C to 204 °C for topside and aboveground service only. ISO 19277 specifies both established and other test methods for the assessment of coatings used for the prevention of CUI for each given environment. ISO 19277 also provides acceptance criteria for each CUI environment.
ISO 19277 covers spray-applied coatings applied on new carbon and austenitic stainless steel for use in CUI service. “Non-through porosity” thermal spray aluminium coatings with greater than 250 μm dry film thickness can be tested and qualified in accordance with ISO 19277.
NOTE 1: ISO 19277 does not cover testing of sacrificial coatings, such as inorganic zinc, as these coatings can be consumed quickly in wet environments.
NOTE 2: ISO 19277 does not cover tape and sheet applied products for use in preventing CUI.
NOTE 3: ISO 19277 does not deal with other aspects of coating degradation, such as those caused by abrasion, erosion, ultraviolet degradation, or other methods that can exist given specific environment and construction methods.
Who is ISO 19277 - Petroleum, petrochemical, and natural gas industries for?
ISO 19277 on the qualification testing and acceptance criteria for protective coating systems under insulation is relevant to:
- Planners, consultants, companies carrying out corrosion protection work
- Inspectors of protective coatings
- Manufacturers of coating materials
- Testing authorities
Why should you use ISO 19277 - Petroleum, petrochemical and natural gas industries?
There are diverse ways of protecting steel structures from corrosion under insulation.
ISO 19277 deals with protection by use of coating when used as part of a system, including insulation and cladding materials, which can work together to prevent corrosion under insulation (CUI). All components of the corrosion prevention system are important in achieving adequate corrosion protection. ISO 19277 only deals with the coating part of the corrosion protection system with a focus on typical CUI coating environments. Further, ISO 19277 focuses on accelerated testing protocols and acceptance criteria, so that interested parties can make informed decisions. ISO 19277 is intended to give the abovementioned information to people who have some technical knowledge of coatings and the process operations of the equipment. Artificial tests and durations specified in ISO 19277 have been selected to help ensure that potential coating systems will have the characteristics needed for the durability required in the intended service. As CUI environments are specific and have unique requirements, several tests are included so that coating products can exhibit performance in harsh environments typical of CUI exposure. These include thermal performance, boiling water, thermal shock, thermal cycling, peak temperature performance, and long-term isothermal conditions.
Overall, ISO 19277 is useful as it assists with the coating that provides corrosion protection by sacrificing or being consumed in the act of protecting the substrate. ISO 19277 provides guidance on the multi-phase CUI cyclic corrosion test process which is used to test the ability of the coating to work in typical environments where CUI occurs.
