1、Designation:D422805(Reapproved 2017)Standard Practice forQualification of Coating Applicators for Application ofCoatings to Steel Surfaces1This standard is issued under the fixed designation D4228;the number immediately following the designation indicates the year oforiginal adoption or,in the case
2、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 practice provides a standard qualifying method forcoating applicators to verify their proficie
3、ncy and ability toattain the required quality for application of specified coatingsto steel surfaces including those in safety-related areas in anuclear facility.1.2 Variations or simplifications of the practice set forthherein may be appropriate for special coating work such asmaintenance or qualif
4、ications of equipment suppliers shoppersonnel.It is not the intent of this practice to mandate asingular basis for all qualifications.1.3 Evaluation of the coating applicator being qualified inaccordance with this practice,shall be by qualified agents asspecified in 4.1.Reports shall be prepared as
5、specified inSection 5,and certification as specified in Section 6.1.4 It is the intent of this practice to judge only the ability ofthe coating applicator to apply specified coatings with theproper tools and equipment.1.5 The values stated in inch-pound units are to be regardedas the standard.The va
6、lues given in parentheses are forinformation only.1.6 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,health and environmental practices and deter-mine the applica
7、bility of regulatory limitations prior to use.1.7 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
8、World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Terminology2.1 Definitions:2.1.1 coating applicator,nan individual who has workedin the painting trade sufficiently long enough to master the useof all applicable tools and the materials being applied.2.1.2 governing documents,ntech
9、nical specifications,jobsite procedures,and reference documents.2.1.3 qualifying agents,nthe designated representatives ofthe owner or of the coating organization,or both,who havesufficient experience in the practical application and evaluationof coatings applied to steel surfaces.3.Application of C
10、oatings3.1 This practice requires the coating applicator to apply thespecified coating in conformance to the governing documentsto a test panel similar to that detailed in Fig.1.A physical testarea may be selected by the owner/representative.The test areashall simulate job conditions and acceptance
11、criteria shall bethe specification requirement.This panel is typical of the panelused for qualification,and may be modified to suit siteconfigurations.3.2 This practice requires the coating applicator to performthe application using the proper technique and applicationequipment consistent with the s
12、pecified coating materials.3.3 The surfaces of the test panel shall be prepared inaccordance with the governing documents.3.4 Place the test panel approximately 12 in.(305 mm)above ground level and at approximately 30 from the verticalplane,with the complex side up.This will simulate the types ofdif
13、ficult coating situations encountered by coating applicators.3.5 The coating applicator shall demonstrate his ability toapply the specified coating to a uniform dry-film thickness inaccordance with the governing documents,as evaluated by thequalifying agents.3.6 Allow required drying as prescribed b
14、y the governingdocuments prior to taking the dry-film thickness reading of theapplied coating.If a coating system specified requires multiplecoats,treat each coat as a separate application,allowing aspecified drying time before inspecting each completed coat.3.7 The coating applicator shall be provi
15、ded with thefollowing:1This practice is under the jurisdiction of ASTM Committee D33 on ProtectiveCoating and Lining Work for Power Generation Facilities and is the directresponsibility of Subcommittee D33.05 on Application and Surface Preparation.Current edition approved Sept.1,2017.Published Septe
16、mber 2017.Originallyapproved in 1983.Last previous edition approved in 2012 as D4228 05(2012).DOI:10.1520/D4228-05R17.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 Te
