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What is ISO31712018

Introduction to ISO 3171:2018

ISO 3171:2018 is an international standard that specifies the requirements for sampling petroleum and liquid hydrocarbons. This standard provides guidelines for the design, installation, and operation of equipment used in automatic sampling systems.

Key Requirements of ISO 3171:2018

ISO 3171:2018 outlines several important requirements that must be followed when sampling petroleum and liquid hydrocarbons. These requirements ensure that the samples collected are representative of the bulk product and provide accurate data for analysis and evaluation.

The first key requirement is a properly designed sampling system. ISO 3171:2018 details the criteria for selecting suitable locations for sampling points and the correct sizing of sample lines and containers. The system should also incorporate provisions for safety, preventing contamination, and ensuring sample integrity throughout the process.

Another crucial requirement is the use of proper sample extraction techniques. ISO 3171:2018 specifies the methods for obtaining samples from different types of containers, such as tanks, pipelines, and process vessels. The standard emphasizes the importance of using standardized equipment and procedures to minimize errors and variations in sample collection.

Benefits and Implications of ISO 3171:2018

Adhering to ISO 3171:2018 brings several benefits to the petroleum industry. Firstly, it ensures the accuracy and reliability of sampled data, which is vital for decision-making and quality control. By following the standard's guidelines, companies can have confidence in the representativeness of their samples, leading to better analysis results and risk assessments.

In addition, compliance with ISO 3171:2018 promotes harmonization across the industry, allowing for better comparability of data between different organizations. This facilitates collaboration, benchmarking, and the exchange of best practices, ultimately leading to improved overall performance in the petroleum sector.

Non-compliance with ISO 3171:2018 can have significant implications. Improper sampling techniques, equipment, or procedures may lead to inaccurate test results, which can result in costly re-sampling, delays, or even legal disputes. Adopting ISO 3171:2018 helps companies uphold industry standards and compliance requirements, reducing the risk of such issues and ensuring smooth operations.


ISO 3171:2018 plays a crucial role in standardizing the sampling of petroleum and liquid hydrocarbons. By following its guidelines, companies can improve the accuracy and reliability of their sampled data, enhance industry-wide harmonization, and minimize the potential risks associated with non-compliance. Adherence to ISO 3171:2018 is essential for any organization involved in the sampling, testing, transportation, or storage of petroleum products.


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