1、Designation:D362378a(Reapproved 2012)Standard Test Method for TestingAntifouling Panels in Shallow Submergence1This standard is issued under the fixed designation D3623;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers a procedure for te
3、sting antifoul-ing compositions in shallow marine environments and astandard antifouling panel of known performance to serve as acontrol in antifouling studies.NOTE1Subcommittee D01.45 has a revised rating procedure nowbeing evaluated by round robin.1.2 The values stated in SI units are to be regard
4、ed as thestandard.The values given in parentheses are for informationonly.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 th
5、e applica-tion of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A569/A569M SpecificationforSteel,Carbon(0.15Maximum,Percent),Hot-Rolled Sheet and Strip Commer-cial(Withdrawn 2000)3D2200 Practice for Use of Pictorial Surface PreparationStandards and Guides for Painting
6、 Steel Surfaces2.2 U.S.Military Specifications(See also Annex A1):MIL-P-15328D Primer Pretreatment(Formula 117 for Met-als)4MIL-P-15929C Primer Coating,Shipboard,Vinyl-Red Lead(Formula 119For Hot Spray)4MIL-P-15931BPaint,Antifouling,Vinyl,Red(Formula121/63)4MIL-S-22698A Steel Plate,Carbon,Structural
7、43.Terminology3.1 Definitions:3.1.1 shallow submergencean immersion to depths be-tween 0.3 and 3.0 m(1 and 10 ft).3.2 Abbreviations:3.2.1 The following abbreviations are used in reporting testresults:AlalgaeBarnbarnaclesE.B.encrusting bryozoansHydhydroidsSlslimeTuntunicatesC.F.completely fouledF.R.f
8、ouling resistance ratingA.F.antifouling ratingA.C.anticorrosive ratingO.P.overall performance ratingCOcoelenteratesF.B.filamentous bryozoansMolmolluscsPCpolychaetes3.2.2 Algal Mups may be delineated by classification nota-tion by phyllum as follows:Al-bPhaeophyta(brown)Al-bgCyanophyta(blue-green)Al-
9、gChlorophyta(green)Al-rRhodophyta(red)4.Significance and Use4.1 This method is designed as a screening test in evaluatingantifouling coating systems.Results of the standard system ina specific marine environment are included to assist in inter-preting results(see Annex A2).4.2 Antifouling systems pr
10、oviding positive comparisonswith the standard system should be considered acceptable foruse in protecting underwater marine structures.4.3 The degree and type of fouling will vary depending onthe environment.Hence,differences in geographic location oftest sites,in time of year when panels are expose
11、d,and inweather conditions from 1 year to the next can affect results.Therefore,a fouling census on a nontoxic surface is taken.For1This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee
12、 D01.45 on Marine Coatings.Current edition approved June 1,2012.Published August 2012.Originallyapproved in 1978.Last previous edition approved in 2004 as D3623 78a(2004).DOI:10.1520/D3623-78AR12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at se
13、rviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700Robbins
14、Ave.,Philadelphia,PA19111-5098,http:/dodssp.daps.dla.mil.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the exposure to be valid the nontoxic surface should showheavy fouling,and the standard system should show signifi-cantly less foulin
15、g than the nontoxic surface(see Annex A3and Annex A4).5.Apparatus5.1 Blast Cleaning Apparatus capable of preparing panels incompliance with 8.1.5.2 Application Equipment consisting of brush,roller,con-ventional spray,or airless spray.Usually the equipment isdictated by the physical properties of the
16、 coating and the filmthickness desired.5.3 Exposure Rack to provide firm positioning of the speci-men panels such that they are held vertically in place in spiteof the current and are electrically insulated from metalliccontact with the rack or other panels.The rack should bepositioned such that the prevailing tidal currents will moveparallel to the panel face,and the panels will be immersed to adepth of a minimum of 0.3 m(1 ft)and a maximum of 3 m(10ft).In a rack where the panels are stacked fr