ASTM_D_1838_-_16.pdf

Designation:D183816Standard Test Method forCopper Strip Corrosion by Liquefied Petroleum(LP)Gases1This standard is issued under the fixed designation D1838;the number immediately following the designation 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.1.Scope*1.1 This test method covers the detection of the presence ofcomponents in liquefied petroleum gases which can be corro-sive to copper.NOTE1For an equivalent copper strip test applicable to less volatilepetroleum products,see Test Method D130.1.2 The values stated in SI units are to be regarded asstandard.1.2.1 ExceptionThe values given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specificwarning statements,see 7.1,10.3.1,and Annex A1.2.Referenced Documents2.1 ASTM Standards:2D130 Test Method for Corrosiveness to Copper from Petro-leum Products by Copper Strip TestD1265 Practice for Sampling Liquefied Petroleum(LP)Gases,Manual MethodD3700 Practice for Obtaining LPG Samples Using a Float-ing Piston Cylinder2.2 ASTM Adjuncts:ADJD0130,ASTM Copper Strip Corrosion Standard forPetroleum33.Terminology3.1 Abbreviations:3.1.1 CAMICoated Abrasives Manufacturers Institute3.1.2 FEPAFederation of European ProducersAssociation4.Summary of Test Method4.1 A polished copper strip is immersed in approximately100 mL of the sample and exposed at a temperature of 37.8 C(100 F)for 1 h in a cylinder of suitable working pressure.Atthe end of this period,the copper strip is removed and rated asone of the four classifications of the ASTM Copper StripCorrosion Standard(ADJD0130).5.Significance and Use5.1 Copper corrosion limits provide assurance that difficul-ties will not be experienced in deterioration of the copper andcopper-alloy fittings and connections that are commonly usedin many types of utilization,storage,and transportation equip-ment.6.Apparatus6.1 Corrosion Test Cylinder,constructed of stainless steelwith an O-ring removable top closure according to the dimen-sions given in Fig.1.Provide a flexible inert hose,such as onecomposed of aluminum or stainless steel,which permitsinverting the test cylinder as required in the procedure(see6.1.1).The whole assembly,including the corrosion testcylinder,shall be constructed to withstand a minimum hydro-static test pressure of 6900 kPa(1000 psig).No leak shall bediscernible when tested at 3450 kPa(500 psig)with gas.6.1.1 Swivel connections with an adapter to fit a 6.4 mm(14in.)pipe may be used.6.1.2 The assembly shall be tested for compliance with theminimum pressure rating of 6900 kPa(1000 psig)by hydro-static testing,or alternative testing protocol acceptable to thelocal authority having jurisdiction,prior to first use.Additionaltesting can be required by the local authority having jurisdic-tion.6.1.3 The assembly shall be verified for gas tightness byleak testing at a minimum of 3450 kPa(500 psig)with inert gasprior to first use,whenever pressure-containing components ofthe assembly are replaced,or otherwise on an annual basis.6.1.4 Note the presence and length(about 60 mm)of theoutage tube shown in Fig.1,to provide adequate ullage forsafety.Asafety pressure relief device may also be incorporatedinto the design of the corrosion test cylinder,if desired.If a1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.H0 on Liquefied Petroleum Gas.Current edition approved June 1,2016.Published June 2016.Originallyapproved in 1961.Last previous edition approved in 2014 as D1838 14.DOI:10.1520/D1838-16.2For referenced ASTM standards,visit the ASTM website,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 ASTM International Headquarters.Order Adjunct No.ADJD0130.*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 pressure relief device is incorporated,ensure that the materialsof its construction will not affect the test results.6.2 Water Bath,capable of being maintained at 37.8 C 60.5 C(100 F 6 1 F).Incorporate suitable supports to holdthe test cylinder in an upright position.Make the bath deepenough so that the entire cylinder and valves will be coveredduring the test.6.3 Temperature Sensing Device(TSD)Capable of moni-toring the desired test temperature in the bath to within anaccuracy of 60.5