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GPA STD 2166

5th Edition, 2017

Complete Document

Obtaining Natural Gas Samples for Analysis by Gas Chromatography

Includes all amendments and changes through Reaffirmation Notice , 2017


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Product Details:

  • Revision: 5th Edition, 2017
  • Published Date: January 2017
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Gas Processors Association (GPA)
  • Page Count: 43
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

The purpose of this publication is to recommend procedures for obtaining samples from flowing natural gas streams that represent the composition of the vapor phase portion of the system being analyzed. These representative samples are subsequently transported to a laboratory and analyzed for composition and/or trace contaminants or analyzed onsite by portable or on-line chromatographs.

 The methods outlined in this publication are designed for sampling natural gas from systems that are at or above the Hydrocarbon Dew Point temperature. As the temperature of the flowing stream decreases or the pressure increases to impinge upon the Hydrocarbon Dew Point. It becomes increasingly difficult to obtain a respresentative sample of the flowing stream. This standard does not address accounting for the liquid hydrocarbon portion of two-phase systems.

The scope of this standard does not include composite gas sampling (samples taken in increments over relatively long time periods) systems. For information on composite sampling, the reader is referred to API 14.1 and ASTEM D5287.

Due to a lack of supporting research data, the scope of this standard does not include sampling from vacuum sources.