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ASTM Standard addresses leakage testing using pressurized gas.

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March 29, 2010 - Developed by Subcommittee F17.40 on Test Methods, ASTM F2786 provides procedure for safely conducting leakage tests of polyethylene pressure piping systems with compressed gaseous testing media. Scope restricts use of practice ASTM F2786 to PE pressure piping systems that cannot be filled with liquid or cannot tolerate traces of liquids, and excludes use with certain gas piping where specific testing specifications exist in codes or regulations.

Newly Approved ASTM Plastic Piping System Standard Provides Procedures for Safely Conducting Leakage Tests Using Pressurized Gas


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ASTM International
100 Barr Harbor Dr., Box C700
West Conshohocken, PA, 19428-2959
USA



Press release date: March 25, 2010

W. CONSHOHOCKEN, Pa., -A newly approved ASTM International standard provides a procedure for safely conducting leakage tests of polyethylene pressure piping systems with compressed gaseous testing media. The new standard, ASTM F2786, Practice for Field Leak Testing of Polyethylene (PE) Pressure Piping Systems Using Gaseous Media Under Pressure (Pneumatic Leak Testing), was developed by Subcommittee F17.40 on Test Methods, part of ASTM International Committee F17 on Plastic Piping Systems.

"A practice for safely testing PE pressure systems with compressed gases is needed for contractors and small gas gathering companies that may not have safe procedures for conducting compressed gas leak tests," says William Adams, technical director and senior engineer, WL Plastics, and chairman of the task group that developed ASTM F2786. "The scope restricts the use of practice ASTM F2786 to PE pressure piping systems that cannot be filled with a liquid or cannot tolerate traces of liquids and excludes use with certain gas piping where specific testing specifications exist in codes or regulations."

Certain polyethylene pressure piping systems for gathering or transporting natural or other compressed gases cannot be tested with liquid because these systems cannot tolerate even traces of liquid. However, there is a significant safety issue that can arise with pressurized gas testing compared to hydrostatic testing with a liquid. Failure when testing using compressed gas will release the energy applied to stress the pipe and joints as well as the energy applied to compress the gas, which can be a massive energy release compared to hydrostatic testing.

Adams notes that the task group responsible for developing ASTM F2786 comprised domestic and international regulators, manufacturers, consultants, gas line operators and representatives of utilities. F17 welcomes interested volunteers who want to participate in the ongoing development of its standards.

Committee F17 previously developed two practices for leak testing of thermoplastic piping systems in which the use of liquid is not an issue: ASTM F1417, Test Method for Installation Acceptance of Plastic Gravity Sewer Lines Using Low-Pressure Air; and ASTM F2164, Practice for Field Leak Testing of Polyethylene (PE) Pressure Piping Systems Using Hydrostatic Pressure.

To purchase ASTM standards, visit www.astm.org and search by the standard designation number, or contact ASTM Customer Relations (phone: 610-832-9585; service@astm.org).

ASTM International is one of the largest international standards development and delivery systems in the world. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions.

View this release on the ASTM Web site at www.astmnewsroom.org.

ASTM Committee F17 Next Meeting: Nov. 15-18, November Committee Week, San Antonio, Texas

Technical Contact: William I. Adams, WL Plastics, Cedar City, Utah, Phone: 435-867-8908; badams@wlplastics.com

ASTM Staff Contact: Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org

ASTM PR Contact: Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org

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