1、Designation:D 4757 98Standard Practice forPlacarding Solvent Vapor Degreasers1This standard is issued under the fixed designation D 4757;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 parenthese
2、s indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice is intended to provide warnings,first aid,and operating instructions for posting on vapor degreasers.1.2 These warnings are intended to suppleme
3、nt other spe-cific warnings applicable to the actual solvent or equipment inuse.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 determ
4、ine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:D 3698 Practice for Solvent Vapor Degreasing Operations2D 4276 Practice for Confined Area Entry22.2OSHA Regulations:29 CFR 1910.1000OSHA Department of Labor SubpartZ,Toxic and Hazardous Substance,P
5、ermissible ExposureLimits32.3ACGIH Documents:TLV-TWA Threshold Limit ValuesTime Weighted Aver-ages43.Significance and Use3.1 Since the operation of a vapor degreaser involves theuse of halogenated hydrocarbons,it is important that a solventvapor degreaser be properly labeled to convey the healthhaza
6、rds of the solvent in use.3.2 This practice is useful in providing general warning andoperating instructions for posting on solvent vapor degreasers.3.3 The following paragraphs outline items to be includedon vapor degreaser placards.3.4 Any specific or additional information should be re-quested fr
7、om the supplier.4.General Requirements4.1 Vapor degreaser placarding may also be subject toapplicable federal,state,and local laws and regulations.4.2 Placards should be posted on the vapor degreaser in aprominent place(s),accessible to workers using the equipment.5.Requirements for Warning Statemen
8、ts5.1 Post the following general warning statements on thesolvent vapor degreaser:5.1.1 This Machine Contains:(Name of Solvent).5.1.2 Warning!Vapor Harmful5.1.3 Avoid Prolonged or Repeated Breathing of Vapor.High vapor concentrations may cause unconsciousness ordeath.5.1.4 Use Only with Adequate Ven
9、tilation.Ventilationmust be sufficient to limit vapor exposures below establishedOSHA or ACGIH levels,or the solvent manufacturers sug-gested health guidelines.Eye irritation and dizziness areindications of overexposure.5.1.5 Do Not Cut or Weld on or Near This Machine,unless all solvent has been dra
10、ined and the equipment airedout.Fire or explosion can result.5.1.6 Do Not Enter This Machine Unless Proper TankEntry ProceduresAre Followed.Refer to Practice D 4276 fordetailed procedure.5.1.7 Do Not Take Internally.Swallowing may causeinjury,illness,or death.5.1.8 Avoid Prolonged or Repeated Contac
11、t with Skin.Contact may cause skin irritation and dermatitis.5.1.9 Do Not Get in Eyes;Will cause discomfort andirritation.5.1.10 Do Not Smoke in the Vicinity of This Machine.5.1.11 Consult Material Safety Data Sheet forAdditionalInformation.6.First Aid6.1 Post first aid instructions on the solvent v
12、apor degreaser.6.1.1 Consult supplier Material Safety Data Sheet or labelfor appropriate first aid statements.1This practice is under the jurisdiction of ASTM Committee D-26 on Haloge-nated Organic Solvents and Fire Extinguishing Agents and is the direct responsi-bility of Subcommittee D26.05 on Ind
13、ustrial Hygiene.Current edition approved May 10,1998.Published March 1999.Originallypublished as D 4757 87.Last previous edition D 4757 97.2Annual Book of ASTM Standards,Vol 15.05.3Available from the Superintendent of Documents,Government Printing Office,Washington,DC 20402.4Available from the Ameri
14、can Conference of Governmental Industrial Hygen-ists,6500 Glenway Ave.,Bldg.D-7,Cincinnati,OH 45211-4438.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superceded and replaced by a new version or disc
15、ontinued.Contact ASTM International(www.astm.org)for the latest information.7.Operating Practices7.1 Post the following operating instructions on the solventvapor degreaser:7.1.1 Prior to Operation:7.1.1.1 Refer to manufacturers operating manual or toPractice D 3698 for detailed operating instructio
16、ns.7.1.1.2 Refer to solvent suppliers Material Safety DataSheet.7.1.1.3 Wear appropriate personal protective equipment.7.1.2 Start-Up:7.1.2.1 Turn on cooling/condensing system and check forproper operation.7.1.2.2 Start air exhaust fan(where provided).7.1.2.3 Check solvent level.7.1.2.4 Turn on heat supply.7.1.2.5 Bring vapors to proper operating level.7.1.3 Degreasing:7.1.3.1 Do not overload the degreaser.7.1.3.2 The final cleaning step should be a dwell in thevapor zone;do not remove work unti
