ASTM_D_4619_-_12.pdf

Designation:D461912Standard Practice forInspection of Linings in Operating Flue Gas DesulfurizationSystems1This standard is issued under the fixed designation D4619;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 practice describes procedures for conducting in-spections of the conditions of various linings in operating FlueGas Desulfurization(FGD)system components.1.2 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.For specific hazardstatements,see Section 8.2.Referenced Documents2.1 ASTM Standards:2C805 Test Method for Rebound Number of Hardened Con-creteC856 Practice for Petrographic Examination of HardenedConcreteD610 Practice for Evaluating Degree of Rusting on PaintedSteel SurfacesD714 Test Method for Evaluating Degree of Blistering ofPaintsD2240 Test Method for Rubber PropertyDurometer Hard-nessD4541 Test Method for Pull-Off Strength of Coatings UsingPortable Adhesion TestersD6677 Test Method for Evaluating Adhesion by KnifeD7091 Practice for Nondestructive Measurement of DryFilm Thickness of Nonmagnetic Coatings Applied toFerrous Metals and Nonmagnetic,Nonconductive Coat-ings Applied to Non-Ferrous Metals2.2 SSPC Standards:3SSPC-PA 2 Measurement of Dry Paint Thickness with Mag-netic GagesSSPC-VIS 2 Standard Method of Evaluating Degree ofRusting on Painted Steel Surfaces3.Significance and Use3.1 Periodic inspections are essential to evaluate liningperformance,to detect existing damage potential problems,andto plan scheduled maintenance.The frequency of these inspec-tions may diminish or increase with time depending uponlining performance.4.Recordkeeping4.1 Lining condition will depend on the operating condi-tions experienced by the lining systems.Records of theseconditions that are maintained by the owner/operator should beevaluated for potential effects upon the linings.These mayinclude:4.1.1 Dates of lining installation and initial operation,4.1.2 Solution/gas temperatures in lined components,4.1.3 Solution/gas chemistry(pH,composition),4.1.4 Start up/shut down dates,4.1.5 Gas velocities and particulate loading,and4.1.6 Ambient conditions.4.2 Any known change in the process criteria or modifica-tions of the physical design shall be identified and dated.4.3 All past history pertaining to the lining systems shouldbe available during the inspection process.They may include:4.3.1 Copies of existing lining specifications and installa-tion procedures.4.3.2 Quality control documents of the existing lining in-stallation.4.3.3 Copies of previous inspection reports.4.3.4 Documentation pertaining to any maintenance of ex-isting lining systems.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 D33.09 on Protective Lining for FGD Systems.Current edition approved Feb.1,2012.Published February 2012.Originallyapproved in 1986.Last previous edition approved in 2004 as D4619 96(2004).DOI:10.1520/D4619-12.2For 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 Society for Protective Coatings(SSPC),40 24th St.,6th Floor,Pittsburgh,PA 15222-4656,http:/www.sspc.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Inspection Team5.1 The owner/operator should select a team of experiencedpersonnel to conduct the inspection.Personnel representing thefollowing may be included:5.1.1 Owners representative,5.1.2 Lining manufacturer,5.1.3 Lining applicator,5.1.4 Equipment designer,5.1.5 Architect engineer,5.1.6 Third party inspectors,and5.1.7 System designer.6.Hazards6.1 All safety requirements of OSHA and the owner/operator,must be met when performing all inspection opera-tions.Residues,including acids,heavy metals,or other haz-ardous materials,may be present in deposits,on the liningsurfaces,or in the atmosphere.Precautions shall be taken toprotect personnel.Confined entry safety requirements shall beadhered to where applicable.7.Pre-Inspection Procedure7.1 Prior to conducting an inspection of the lining,theowner/operator shall ensure that the following services andequipment are provided.7.1.1 SafetyThe inspection team shall verify that theequipment being inspected has been made safe for entry.Thisshall include lockout procedures for related equipment such as,but not