1、BRITISH STANDARD BS EN 212:2003 Wood preservatives General guidance on sampling and preparation for analysis of wood preservatives and treated timber The European Standard EN 212:2003 has the status of a British Standard ICS 71.100.50 BS EN 212:2003 This British Standard, was published under the aut
2、hority of the Standards Policy and Strategy Committee on 3 October 2003 BSI 3 October 2003 ISBN 0 580 42729 3 National foreword This British Standard is the official English language version of EN 212:2003. It supersedes BS 5666-1:1987 which is withdrawn. The UK participation in its preparation was
3、entrusted by Technical Committee B/515, Wood preservation, to Subcommittee B/515/2, Specifications and chemical testing of wood preservatives, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The B
4、ritish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards
5、Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the respo
6、nsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cov
7、er, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN212 June2003 ICS71.
8、100.50 SupersedesEN212:1996 Englishversion WoodpreservativesGeneralguidanceonsamplingand preparationforanalysisofwoodpreservativesandtreated timber ProduitsdeprservationduboisGuidegnral dchantillonnageetdeprparationpourlanalysedes produitsdeprservationduboisetduboistrait HolzschutzmittelAllgemeineAn
9、leitungfrdie ProbenahmeundProbenvorbereitungvon HolzschutzmittelnundvonbehandeltemHolzfrdie Analyse ThisEuropeanStandardwasapprovedbyCENon21April2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandard
10、withoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibility
11、ofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spa
12、in,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN212:2003EEN212:20
13、03(E) 2 Contents Foreword3 Introduction .4 1 Scope 5 2 Normativereferences 5 3 Termsanddefinitions. .5 4 Safetyprecautions .6 5 Guidanceonsamplingpreservatives 7 5.1 General7 5.2 Samplingofsolidpreservatives. 8 5.3 Samplingofpreservativesinpasteform . .10 5.4 Samplingofliquidpreservatives 10 6 Guida
14、nceonsamplingtreatedtimber . 11 6.1 General11 6.2 Samplingprocedures . .12 7 Methodforthedeterminationofmoisturecontentofpreservativetreatedtimber 16 7.1 Selectionofsample . 16 7.2 Apparatus .16 7.3 Procedure .16 7.4 Calculation16 8 Generalconsiderationsinconvertingsamplesforanalysis.17 9 Samplingre
15、port. .17 Bibliography 18EN212:2003(E) 3 Foreword Thisdocument(EN212:2003)hasbeenpreparedbytheTechnicalCommitteeCEN/TC38“Durabilityofwoodand woodbasedproducts“,thesecretariatofwhichisheldbyAFNOR. This EuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor bye
16、ndorsement,atthelatestbyDecember2003,andconflictingnationalstandardsshallbewithdrawnatthelatest byDecember2003. ThisdocumentsupersedesEN212:1986. SignificanttechnicaldifferencesbetweenthiseditionandEN212:1986areasfollows: a) additionofaclause“Introduction“; b) introductionofaclause“Normativereferenc
17、es“; c) introductionofaclause“Termsanddefinitions“; d) takingintoaccounttherequirementsofEN3511andoftheguidanceofsamplinginEN3512; e) forthinsectionsamples,useofaspecificborer; f) additionofasamplingreport. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing
18、countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN212:2003(E) 4 Introduction Samplingisavitalstepinan
19、alysisandtesting.ItsimportanceisrecognizedinthisEuropeanStandardwhichgives guidanceongeneralmethodsforthesamplingofwoodpreservativesandpreservativetreatedtimber. Suchsamplesshouldberepresentativeofthematerialsunderexaminationandinaformthatmakesthe determinationoftherequireddatapossible. Noattempthas
20、beenmadeheretodefinerigidlyanydetailedmethodologytobefollowedinoperationsinthese areasbecausethismaydependuponthenatureofthepreservative,themethodoftreatmentandtheparticular requirementsofe.g.nationalauthoritiesorqualitycontrolandcertificationbodies. Furthermore,theobjectivesofeachanalysis,andthedem
21、andsoftheindividualanalyticaltechniques,canimpose theirownrequirementswithregardtosamplingandsubsequenthandling.Therefore,itisessentialthatthe samplingplanforeachoperationshouldbedevisedinthelightoftheparticularobjective,usingprofessional judgementbasedonexperience. Thetechniquesdescribedcanbeemploy
22、edinawidevarietyofapplicationsrangingfromlaboratoryresearchto thecheckingofpreservativesandtreatedtimberforarbitrationpurposes.EN212:2003(E) 5 1 Scope ThisEuropeanStandardgivesguidanceonthegeneralprocedurestobefollowedinthesamplingandpreparation foranalysisofwoodpreservativesandpreservativetreatedti
23、mber. ThisEuropeanStandardisapplicabletotheprovisionofappropriatesamplesforanalysiswhichcanbeusedto checkthecontentofactiveandotheringredientsinpreservativeformulations,andthecontentofactiveandother ingredientsofwoodpreservativesintreatedtimber,eitherbefore,duringoraftertheservicelifeofthetimber. NO
24、TE1 MethodsofsamplingcreosoteandcreosotetreatedtimberaredescribedinEN10141,10142andEN12490. ThesearetobeusedinpreferencetotherecommendationsinthisEuropeanStandard. NOTE2 Noattempthasbeenmadeinthisdocumenttolaydowndetailedprocedurestobeadoptedforcontrolpurposesat manufacturingplantswherelargevolumeso
25、fpreservativesaretobesampled.Nordoesitattempttoestablishproceduresfor checkingthecomplianceofbatchesoftreatedtimberwithspecificationsdemandingadefinedleveloftreatment(see6.2). 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normat
26、ivereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferre
27、dtoapplies(includingamendments). EN3511, DurabilityofwoodandwoodbasedproductsPreservativetreatedsolidwoodPart1:Classificationof preservativepenetrationandretention. EN3512, DurabilityofwoodandwoodbasedproductsPreservativetreatedsolidwoodPart2:Guidanceon samplingfortheanalysisofpreservativetreatedwoo
28、d. ISO6206:1979, ChemicalproductsforindustrialuseSamplingVocabulary . 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply: 3.1 samplingunit definedquantityofmaterialhavingaboundarywhichmaybephysical,forexampleacontainer,orhypothetical,for exampleaparticula
29、rtimeortimeintervalinthecaseofastreamofmaterial NOTE1 Anumberofsamplingunitsmaybegatheredtogether,forexampleinapackageorbox. NOTE2 InFrench,theterm”individu”issometimesusedasasynonymof”unitdchantillonnage”.InEnglish,theterms ”individual”,”unit”and”item”aresometimes usedinpracticeassynonymsof”samplin
30、gunit”. ISO6206:1979 3.2 sample oneormoresamplingunitstakenfromalargernumberofsamplingunits,oroneormoreincrementstakenfroma samplingunit ISO6206:1979EN212:2003(E) 6 3.3 representativesample sampleassumedtohavethesamecompositionasthematerialsampledwhenthelatterisconsideredasa homogeneouswhole ISO6206
31、1979 3.4 samplingplan plannedprocedureofselection,withdrawalandpreparationofasampleorsamplesfromalot(3.6)toyieldthe requiredknowledgeofthecharacteristic(s)fromthefinalsample(3.9)sothatadecisioncanbemaderegarding thelot NOTE Considerationsofcost,effortanddelayusuallydetermineanacceptablesamplingplan
32、 ISO6206:1979 3.5 consignment quantityofmaterialcoveredbyaparticularorderorshippingdocument AdaptedfromISO6206:1979 3.6 lot totalquantityofmaterialtobesampledusingaparticularsamplingplan.Alotcanconsistofanumberof consignments,batchesoritems AdaptedfromISO6206:1979 3.7 batch definitequantityofmateri
33、althatcanbeoneitemoranumberofitemsthatbelongtogetherbecauseoftheir manufactureorproductionunderconditionswhicharepresumedtobeuniform AdaptedfromISO6206:1979 3.8 bulksample collectsetofsampleswhichdonotmaintaintheirindividualidentity ISO6206:1979 3.9 finalsample sampleobtainedorpreparedunderthesampli
34、ngplanforpossiblesubdivisionintoidenticalportionsfortesting, referenceorstorage ISO6206:1979 4 Safetyprecautions Allpreservativesshouldbeconsideredpotentiallytoxicbothtomanandtotheenvironmentandshouldbehandled withcareandinaccordancewiththespecificrecommendationsforsafeuseagreedwithNationalandIntern
35、ational Authorities.Themanufacturersinstructionsshouldalsobeobserved. Inhandlingsolidtimberaftertreatment,protectiveglovesandglassesshouldbewornifthetimberisstillwetor containssolvent.Oncethetimberhasdried,unlesspreservativeresiduesonthesurfacearenoted,nospecial precautionsarenecessaryinhandlingsuch
36、timber,otherthanthenormalpracticeofwashinghandsbefore handlingfoodorsmoking.EN212:2003(E) 7 Whentreatedtimberismachinedormechanicallysandedorsawn,anefficientdustextractionsystemshouldbe usedor,failingthis,theoperatorshouldbeprovidedwith,andshouldwear,appropriaterespiratoryprotection. Theorganicsolve
37、ntscommonlyusedforapplyingpreservativesareflammableanditisessentialthatcarebe exercisedinhandlingsuchmaterials. NOTE Attentionisdrawntotheneedtocomplywithanystatutoryregulationsthatgoverntheuseandstorageof flammableliquids. 5 Guidanceonsamplingpreservatives 5.1General Themethodofsamplingchosenshould
38、ensurethatthesampleobtainedisasrepresentativeaspossibleofthe totalconsignment. 5.1.1 Suspectconsignment Aconsignmentshouldbeconsideredsuspectif: a) acontainerisdamagedordefective; b) thereisanydoubtastothenatureofthecontentsofacontainer,forexamplebecauseofthepresenceofan oldlabelorincorrectmarkings;
39、 c) obviousandunusualvariationsareobservedintheconsignment. Suchsamplesshouldbefullyreportedandshouldnotberegardedasacceptablewithoutmutualagreement betweenthepartiesconcerned. 5.1.2 Numberofitemsinconsignment Theleastnumberofcontainers,e.g.drums,tobesampledfromanygivenconsignmentofpreservativemater
40、ials, irrespectiveofwhetherthematerialsaresolidorliquid,shouldbethenearestwholenumbertothesquarerootof halfthetotalnumberofcontainersintheconsignment(seeTable1).Thecontainerstobesampledshouldbe takenatrandom. Table1Samplingofcontainers Numberofcontainersin consignment(x) 2 x Numberofcontainerstobe s
41、ampled 10 2,24 2 20 3,16 3 30 3,87 4 50 5,00 5 100 7,07 7EN212:2003(E) 8 5.1.3 Choiceofmaterialsforsamplecontainerandsamplingdevices Itisessentialinallcasesthatthesamplingdevicesandthesamplecontaineranditsclosurebemadefrom materialwhichisinerttotheparticularpreservativeunderinvestigation. NOTE1 Poly
42、ethylenecontainersshouldnotbeusedforhydrocarbonsolvents.Glasscontainersarerecommended. NOTE2 Glasscontainersshouldnotbeusedforfluorineandboronbasedpreservatives.Containersofpolyethyleneare recommended. 5.1.4 Markingandstorageofsamples Allsamplecontainersshouldbeclearlyandpermanentlylabelledastotheir
43、contents.Allsamplesshouldbestored intheircontainersinacool,darkplacepriortoanalysis. 5.2 Samplingofsolidpreservatives 5.2.1 Samplingdevice Asuitablesamplingdeviceforthepurposeofsamplingthepreservativeinadrumisasamplingspearofinternal diameterapproximately30mmandsufficientlylongtoreachthebottomofthedrum. 5.2.2 Procedure(seeFigure1) Beforesampling,mixthecontentsofthedrumasthoroughlyaspossible.Takegreatcaretominimizethemoisture pickedupbythesampleduringthesampling,mixingandreducingprocesses.Usingthesamplingdevice,takefive samples,onefromthecentre
