No. RP 585 covers Compressible Fluid (Gas) Sampling , while RP 586 is specifically for Liquids . Do not confuse them – gas sampling uses completely different principles (e.g., vaporization, isokinetic issues are less critical).
The document addresses:
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(Recommended Practice 586) – officially titled "Liquid Product Sampling Systems for Refinery and Terminal Applications" – provides the standardized framework for designing, operating, and maintaining sampling systems that extract representative samples of liquid hydrocarbons. api rp 586 pdf
The document is structured into several parts, some of which are currently in use while others remain in the planning or draft phases: The document addresses: Searching for a often leads
– Covers inspection of ferrous and non-ferrous tubes using electromagnetic and ultrasonic methods. Part 2: High Temperature Hydrogen Attack (HTHA) isokinetic issues are less critical).