1、Designation:D779012Standard Guide forPreparation of Plastic Packagings Containing Liquids forUnited Nations(UN)Drop Testing1This standard is issued under the fixed designation D7790;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the
2、 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 guide intends to provide a standardized method forspecial preparation conditioning of drop test samples forUn
3、ited Nations(UN)performance-oriented packaging certifi-cation.1.2 This guide provides guidance on conditioning testsamples for drop testing plastic packaging intended for liquidhazardous materials(dangerous goods)as required by 49 CFR178.603(c)(1)and 178.810(b)(4).This guide also providesthe minimum
4、 information that should be documented whenconducting special preparation conditioning.1.3 The user of this guide shall be trained in accordancewith 49 CFR 172.700 and other applicable hazardous mate-rials regulations including:the International Civil AviationOrganization(ICAO)Technical Instructions
5、 for the Safe Trans-port of Dangerous Goods by Air,the International MaritimeDangerous Goods Code(IMDG Code),and carrier rules suchas the International Air Transport Association(IATA)Danger-ous Goods Regulations.1.4 UnitsThe values stated in SI units are regarded as thestandard.No other units of mea
6、surement are included in thisstandard.1.5 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 limit
7、ations prior to use.2.Referenced Documents2.1 ASTM Standards:2D4332 Practice for Conditioning Containers,Packages,orPackaging Components for TestingD4919 Guide for Testing of Hazardous Materials Packagings2.2 Federal Standard:U.S.Department of Transportation Code of Federal Regula-tions Title 49(49
8、CFR)Parts 100-18532.3 UN Standard:United Nations Recommendations on the Transport of Dan-gerous Goods,Model Regulations(UN Orange Book)42.4 IATA Standard:International Air Transport Association(IATA)DangerousGoods Regulations52.5 ICAO Standard:International Civil Aviation Organization(ICAO)Technical
9、Instructions for the Safe Transport of Dangerous Goods byAir62.6 IMDG Standard:International Maritime Dangerous Goods(IMDG)Code73.Terminology3.1 Definitions:3.1.1 ambient,advthe temperature and humidity of thesurrounding environment where sample preparation is con-ducted.3.1.2 conditioning period,nm
10、inimum time required fortest sample(s)and contents to reach the appropriate tempera-ture.3.1.3 environmentalconditioningchamber(s),ncompartment,cabinet,or enclosed room that has the abilityto achieve low temperatures and maintain those temperatures(or below)during the conditioning period.Examples ar
11、e chest,upright freezer,or walk-in freezer.1This guide is under the jurisdiction ofASTM Committee D10 on Packaging andis the direct responsibility of Subcommittee D10.21 on Shipping Containers andSystems-Application of Performance Test Methods.Current edition approved Nov.1,2012.Published December 2
12、012.DOI:10.1520/D7790-12.2For 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 Superintendent of Documen
13、ts,U.S.Government PrintingOffice,Washington,DC 20402-9371(website:phmsa.dot.gov/hazmat).4Available from the UN Economic Commission for Europe,InformationService,Palais des Nations,CH-1211 Geneva 10 Switzerland(website:http:/www.unece.org/trans/danger/danger.htm).5Available from the International Air
14、 Transport Association(IATA),800 PlaceVictoria,PO Box 113,Montreal,Quebec H4Z 1M1 Canada(website:http:/www.iata.org).6Available from the International Civil Aviation Organization,(ICAO),999University St.,Montreal,Quebec H3C 5H7 Canada(website:http:/www.icao.org).7Available from the International Mar
15、ine Organization(IMO),4 AlbertEmbankment,London,SE1 7SR United Kingdom(website:http:/www.imo.org).Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.4 mapping,vcollecting temperature data at multipleinterior or exterior locations of a pa
16、ckage or inside the chamberto determine the temperature variability range.3.1.4.1 DiscussionUnitsAll temperature readings are indegrees Celsius.3.1.5 specific gravity,nratio of the testing substancedensity to a standard substance(i.e.,water)density at a specifictemperature and pressure.3.1.5.1 DiscussionFor solids and liquids,the standardsubstance is normally water at 4.0C with a 1.00 kg/L density.3.1.6 thermocouple,ndevice for measuring temperature.It consists of two dissimilar metals,joined to
