ISO 21457: A Standard for Materials Selection and Corrosion Control for Oil and Gas Production Systems
Oil and gas production systems are exposed to various corrosive environments that can affect their performance and integrity. Corrosion can lead to material degradation, failure, leakage, environmental damage, safety hazards and increased costs. Therefore, it is essential to select appropriate materials and corrosion control methods for the design, construction and operation of oil and gas production systems.
ISO 21457:2010 is an international standard that provides guidance on the corrosion mechanisms and parameters for evaluation when performing selection of materials for pipelines, piping and equipment related to transport and processing of hydrocarbon production, including utility and injection systems. This standard covers all equipment from and including the well head, to and including pipelines for stabilized products. However, it does not apply to downhole components.
ISO 21457 Materials Selection And Corrosion Control For Oil And Pdf
DOWNLOAD: https://nycokforpi.blogspot.com/?cy=2vLyRa
The main objectives of ISO 21457:2010 are to:
identify the relevant corrosion factors and mechanisms that affect oil and gas production systems;
provide general guidelines for corrosion evaluations and materials selection;
recommend specific materials for different applications and systems;
define the performance limitations and usage restrictions for specific materials;
suggest corrosion control methods such as chemical treatment, corrosion allowance, coatings, cathodic protection, etc.;
specify the contents of a materials selection report;
promote the use of materials that are generally available, with known and documented properties;
allow other materials to be evaluated and qualified for use.
ISO 21457:2010 does not provide detailed material requirements or guidelines for manufacturing and testing of equipment. Such information can be found in particular product and manufacturing standards.
ISO 21457:2010 was published in 2010 by the International Organization for Standardization (ISO), which is an independent, non-governmental organization that develops voluntary standards for various fields of activity. ISO 21457:2010 was developed by ISO Technical Committee 67 (Oil and gas industries including lower carbon energy), which consists of experts from different countries and sectors. The standard was last reviewed and confirmed in 2018, which means that it remains current and relevant.
To access the full text of ISO 21457:2010, you can purchase it from the ISO website or from your national standards body. Alternatively, you can download a PDF version of the standard from some online sources[^1^] [^2^]. However, please note that these sources may not be authorized or updated by ISO.
ISO 21457:2010 is based on the principle of corrosion risk management, which involves identifying, assessing, mitigating and monitoring the corrosion threats and consequences for oil and gas production systems. The standard provides a systematic approach for materials selection and corrosion control, which consists of the following steps:
Define the design basis for the system, including the operating conditions, fluid compositions, environmental factors, design life, etc.
Identify the potential corrosion mechanisms and failure modes for the system, such as general corrosion, localized corrosion, stress corrosion cracking, hydrogen embrittlement, etc.
Assess the corrosion rate and severity for each corrosion mechanism and failure mode, using empirical models, laboratory tests, field data, etc.
Select the appropriate materials for each component of the system, considering the corrosion resistance, mechanical properties, availability, cost, etc.
Determine the corrosion control methods for each component of the system, such as chemical treatment, corrosion allowance, coatings, cathodic protection, etc.
Prepare a materials selection report that documents the corrosion evaluation and materials selection process and results.
Implement the materials selection and corrosion control plan during fabrication, installation and operation of the system.
Monitor the corrosion performance and integrity of the system during its service life, using corrosion monitoring techniques such as coupons, probes, sensors, inspection tools, etc.
Review and update the materials selection and corrosion control plan periodically or when changes occur in the system or its environment.
ISO 21457:2010 also provides specific guidance and recommendations for materials selection and corrosion control for different types of oil and gas production systems, such as:
Oil and gas production and processing systems;
Injection systems;
Utility systems;
Pipelines and flowlines.
For each type of system, the standard identifies the typical corrosion mechanisms and factors that affect them. It also suggests suitable materials for different components and applications within the system. Moreover, it defines the performance limitations and usage restrictions for certain materials in specific environments. Furthermore, it advises on the appropriate corrosion control methods for each type of system.
ISO 21457:2010 is intended to be used by engineers, designers, operators and managers involved in the materials selection and corrosion control of oil and gas production systems. The standard can help them to optimize the performance and integrity of their systems while minimizing the environmental impact and operational costs. However, ISO 21457:2010 does not replace the need for professional judgment and experience in applying its principles and guidelines. The users of the standard should also comply with any applicable laws and regulations in their jurisdictions.
e033bf56a8