ISSN: 1546-962X
CODEN: JAIOAD
Published Online: 2 December 2010
Page Count: 15

Yesterday, Today, and Now: Polyamide-11 Gas Piping at 200 psig Under the New Rules

Volgstadt, Frank
Volgstadt and Associates, Inc., Madison, OH

(Received 25 November 2009; accepted 27 September 2010)

Abstract

This paper will explore and explain the Dec. 24, 2008, PHMSA rulemaking resulting in revisions to 192.123, permitting the use of polyamide-11 (PA-11) plastic gas piping in gas distribution systems at pressures of up to 200 psig using a design factor of 0.4 without waivers or special permits. The paper will also explore (1) PA-11 properties and attributes; (2) PA-11 and polyethylene piping in complimentary but not competing plastic gas piping applications; (3) PA-11 piping as a cost effective alternate to steel piping; (4) updates on some existing, special permit (waiver) installations made prior to the Dec. 24, 2008, rulemaking; (5) standard PA-11 installations as well as unique applications into which PA-11 piping is being introduced; and (6) how to install PA-11 piping.

Keywords:
polyamide-11, PA-11, gas pipe, plastic pipe, high pressure, gas distribution, nylon-11

Paper ID: JAI102846
DOI: 10.1520/JAI102846
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