1、Designation:F1973131Standard Specification forFactory Assembled Anodeless Risers and TransitionFittings in Polyethylene(PE)and Polyamide 11(PA11)andPolyamide 12(PA12)Fuel Gas Distribution Systems1This standard is issued under the fixed designation F1973;the number immediately following the designati
2、on indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTE7.4.3 was editorially revised in October 2013.1.
3、Scope*1.1 This specification covers requirements and test methodsfor the qualification of factory assembled anodeless risers andtransition fittings,for use in polyethylene(PE),in sizes throughNPS 8,and Polyamide 11(PA11)and Polyamide 12(PA12),insizes through NPS 6,gas distribution systems.1.2 The te
4、st methods described are not intended to beroutine quality control tests.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 Throughou
5、t this specification footnotes are provided forinformational purposes and shall not be considered as require-ments of this specification.2.Referenced Documents2.1 ASTM Standards:2NOTE1For over 40 years D2513 was the singular US CFR Title 49Part 192 referenced Standard Specification codifying the ins
6、tallation anduse of thermoplastic gas piping in jurisdictional installations.Initially allmaterials(PE,PVC,ABS,CAB)were contained within the body of thestandard D2513.In later years D2513 was completely reformatted to makeit more user friendly by moving material-specific requirements from thestandar
7、ds body to mandatory annexes.The next major change occurredlate in 2009 at which time all thermoplastic materials,exceptpolyethylene,were removed from D2513 changing its Title and Scopefrom a thermoplastic gas piping standard to a polyethylene-only gaspiping standard.This recent change required that
8、 new standards bedeveloped for those materials that were removed from D2513 includingPA11.This causes problems for PA11 piping because it has beenreferenced and permitted for jurisdictional use and installation under USCFR Title 49 Part 192 as complying with D2513 and D2513 no longer hasthe A5 polya
9、mide annex and Part 192 still references D2513-99 whichmakes for potential confusion.This puts PA11 gas piping standards intosomewhat of a limbo since D2513 is now a PE-only specification isreferenced in all of these standards.Therefore until Part 192 is revised toreference the new PA11 specificatio
10、n,F2945,PA11 has to fall back tociting the US Code referenced 1999 edition of D2513 in related standardsuch as this one.Until CFR Title 49 Part 192 references the newlydeveloped thermoplastic gas piping standards for those materials removedfrom D2513,there will be dual references,both D251399 and F2
11、945 forPA11,as seen in this standard.At which time Part 192 references F2945,the PA11 gas piping standard,all references to D2513 and this note willbe removed from these standards.A53/A53M Specification for Pipe,Steel,Black and Hot-Dipped,Zinc-Coated,Welded and SeamlessA513 Specification for Electri
12、c-Resistance-Welded Carbonand Alloy Steel Mechanical TubingD638 Test Method for Tensile Properties of PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD2513 Specification for Thermoplastic Gas Pressure Pipe,Tubing,and FittingsE515 Practice for Leaks Using Bubble Emission Technique
13、sF412 Terminology Relating to Plastic Piping SystemsF1588 Test Method for Constant Tensile Load Joint Test(CTLJT)F2785 Specification for Polyamide 12 Gas Pressure Pipe,Tubing,and FittingsF2897 Specification for Tracking and Traceability EncodingSystem of Natural Gas Distribution Components(Pipe,Tubi
14、ng,Fittings,Valves,and Appurtenances)F2945 Specification for Polyamide 11 Gas Pressure Pipe,Tubing,and Fittings2.2 Federal Standard:3CFR Title 49 Part 192 Transportation of Natural and OtherGas By Pipeline:Minimum Federal Safety Standards1This specification is under the jurisdiction of ASTM Committe
15、e F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.60 on Gas.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 1999.Last previous edition approved in 2012 as F197312.DOI:10.1520/F1973-13.2For referenced ASTM standards,visit the ASTM website
16、,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/dodssp.daps.dla.mil.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2
