ASTM_C_1639_-_17.pdf

Designation:C163917Standard Specification forFabrication Of Cellular Glass Pipe And Tubing Insulation1This standard is issued under the fixed designation C1639;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.Scope1.1 This specification covers fabrication techniques forcellular glass block into billets to fabricate pipe and tubinginsulation.All materials shall be in accordance with Specifi-cation C552.1.2 The purpose of this specification is to optimize thethermal performance of installed cellular glass insulationsystems.This is best achieved by limiting the number of joints,in particular through joints.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 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.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationC450 Practice for Fabrication of Thermal Insulating FittingCovers for NPS Piping,and Vessel LaggingC552 Specification for Cellular Glass Thermal InsulationC585 Practice for Inner and Outer Diameters of ThermalInsulation for Nominal Sizes of Pipe and TubingD312 Specification for Asphalt Used in Roofing2.2 ASTM Adjuncts:3ADJC0450A ASTM Recommended Dimensional Standardsfor Fabrication of Thermal Insulation Fitting Covers3.Terminology3.1 Terminology C168 shall be considered as applying tothe terms in this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 billet/buna single piece of insulation made up froma number of smaller blocks held together with an adhesive.3.2.2 lagspieces of insulation typically curved or taperedused for insulating pipes,tanks and other cylindrical equip-ment.3.2.3 precision cut V-grooved pipe insulation,nrigid in-sulation pieces cut into 4-sided polygons,of two parallelsurfaces and two non-parallel surfaces of equal angles=180/N,such that when N number of these sections are assembled,they form an approximate circle and can be installed around apipe.3.2.3.1 DiscussionThe adjective precision refers to thefact that when these N sections are installed onto a pipe,theyfit exactly with no appreciable gaps between sections.3.2.4 bond joint,nthe joint formed by the adhered matingsurfaces of several thicknesses of cellular glass block orfabricated cellular glass insulation pieces that are used to createa cellular glass insulation billet,bun,or pipe and tubinginsulation segments.See Fig.1.3.2.4.1 DiscussionA bond joint is created during thefabrication of cellular glass pipe and tubing insulation and ismade with a full depth(100%coverage)of an approvedadhesive.(See 3.2.1 and 8.4).3.2.5 fabrication joints see bond joint,nthe joint be-tween adhered mating surfaces of cellular glass pipe and tubinginsulation segments formed by fabricated segments or sectionsof cellular glass insulation that are assembled in the fabricationshop,facility,or jobsite,to produce the cellular glass pipe andtubing insulation.See Figs.2-4.1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.40 onInsulation Systems.Current edition approved April 15,2017.Published April 2017.Originallyapproved in 2007.Last previous edition approved in 2016 as C1639 16.DOI:10.1520/C1639-17.2For 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.ADJC0450A.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.2.5.1 DiscussionA fabrication joint is created at a fab-rication shop or facility and is made with a