ANSI American Society of Safety Engineers Z9.6-2008 Exhaust Systems for Grinding Polishing and Buffing.pdf

1、BY THE ANSI/AIHA Z9.6 SubcommitteeA Publication by American Industrial Hygiene AssociationExhaust Systemsfor Grinding, Polishing, and BuffingANSI/AIHA Z9.62008Please note the American Society of Safety Engineers (ASSE) is now the Secretariat of the Z9 ASC and holds the copyright to this standard.Ame

2、rican Society of Safety Engineerswww.asse.orgASSECopyright AIHA For personal use only. Do not distribute.ANSI/AIHA Z9.62008American National Standard Exhaust Systems for Grinding, Polishing, and BuffingSecretariatAmerican Industrial Hygiene AssociationApproved: June 11, 2008American National Standar

3、ds Institute, Inc.Please note the American Society of Safety Engineers (ASSE) is now the Secretariat of the Z9 ASC and holds the copyright to this standard.American Society of Safety Engineerswww.asse.orgAmericanNationalStandardApproval of an American National Standard requires verification by ANSI

4、thatthe requirement for due process, consensus, and other criteria for approvalhave been met by the standards developer.Consensus is established when, in the judgment of the ANSI Board ofStandards Review, substantial agreement has been reached by directly andmaterially affected interests. Substantia

5、l agreement means much more than asimple majority, but not necessarily unanimity. Consensus requires that allviews and objection be considered, and that a concerted effort be madetoward their resolution.The use of American National Standards is completely voluntary; their exis-tence does not in any

6、respect preclude anyone, whether he or she hasapproved the Standards, or not, from manufacturing, marketing, purchasing, orusing products, processors, or procedures not conforming to the Standards.The American National Standards Institute does not develop standards andwill in no circumstances give a

7、n interpretation of any American NationalStandard. Moreover, no person shall have the right or authority to issue aninterpretation of an American National Standard in the name of the AmericanNational Standards Institute. Requests for interpretations should be addressedto the secretariat or sponsor w

8、hose name appears on the title page of thisstandard.CAUTION NOTICE: This American National Standard may be revised or with-drawn at any time. The procedures of the American National StandardsInstitute require that action be taken to reaffirm, revise, or withdraw thisStandard no later than five years

9、 from the date of approval. Purchasers ofAmerican National Standards may receive current information on all standardsby calling or writing the American National Standards Institute.Published byAmerican Industrial Hygiene Association2700 Prosperity Ave., Suite 250Fairfax, VA 22031www.aiha.orgCopyrigh

10、t 2008 by the American Industrial Hygiene AssociationAll rights reserved.No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.Printed in the United States of America.Stock No: IVEA08-750ISBN-1

11、3: 978-1-931504-94-2Copyright AIHA For personal use only. Do not distribute.ContentsPage Foreword .iii1. Scope and Application.11.1 Scope 11.2 Application.12. Referenced Standards and Publications .12.1 General12.2 American National Standards12.3 Occupational Safety and Health Administration Standar

12、ds 12.4 Other Publications .12.5 Related Documents.23. Definitions24. Hazardous Materials Exposure Control.55. Personal Protective Equipment .66. Ventilation System Design Operation77. Commissioning and Testing of Exhaust Ventilation Systems 88. Hoods and Enclosures 89. Dilution Ventilation Systems

13、12Appendix: Audit Form.29Copyright AIHA For personal use only. Do not distribute.iiANSI/AIHA Z9.62008Figures Used in this StandardPageFigure 1: Abrasive cut-off saw 13Figure 2: Surface Grinder .14Figure 3: Vertical spindle-cup wheel grinder exhaust hood 15Figure 4a: Grinding wheel hood surface speed

14、s less than or equal to 6500 SFPM16Figure 4b: Grinding wheel hood surface speeds greater than 6500 SFPM .17Figure 5: Swing-frame grinder exhaust hood18Figure 6: Portable grinder work exhaust hood and branch duct Connections19Figure 7: Polishing and buffing hoods 20Figure 8: Backstand idler polishing

15、 machine 21Figure 9: Cradle polishing or grinding exhaust hood and branch duct connections.22Figure 10: Automatic straight-line grinding and polishing .23Figure 11: Automatic rotary grinding and polishing 24Figure 12: Horizontal single-spindle disc grinder exhaust hood and branch duct connections .2

16、5Figure 13: Horizontal double-spindle disc exhaust hood and branch duct connections.26Figure 14: Vertical spindle disc grinder exhaust hood and branch duct connections.27Figure 15: Belt sander exhaust hood and branch duct connections.28Copyright AIHA For personal use only. Do not distribute.FOREWORD

17、 (This foreword is not part of the American National Standard/AIHA Z9.62008)A standard for ventilation of grinding, polishing, and buffing equipment was originally developed bythe Industrial Hygiene Codes Committee of the American Foundrymens Association (now knownas the American Foundrymens Society

18、, or AFS) and was approved by the Board of Directors ofthat organization on December 4, 1936. Realizing that grinding, polishing, and buffing equipment isused in many industries and wishing to make technical material used by the foundry industry morewidely available, the American Foundrymens Associa

19、tion submitted this standard to the AmericanStandards Association (now ANSI) for approval as an American National Standard. ASA referredthe standard to the Z9 Committee on Exhaust Systems, a canvas of interested parties was con-ducted by letter ballot, and the standard was issued as Z43.11941 on Aug

20、ust 14, 1941.The Dust Control Committee of the American Foundrymens Society revised and updated the stan-dard, submitted the revision to the American Standards Association, and it was reissued under theguidance of the Z9 committee as Z43.11966. ANSI withdrew the standard in 1988 when no fur-ther wor

21、k was done on it. The Z9 Committee, however, believed it was important to maintain thisconsensus information and chartered a Z9.6 subcommittee in 1992 to rewrite Z43.1 as ANSI Z9.6.This new standard provides updated information on ventilation for grinding, polishing, and buffingoperations that confo

22、rms to current accepted practices.New technology and research continues to change this field and it is hoped that future versions ofthe standard will reflect this growth in knowledge. Suggestions for improvement are welcome. Theyshould be sent to the American Industrial Hygiene Association, 2700 Pro

23、sperity Avenue, Suite 250,Fairfax, VA 22031.How to Use this StandardThe requirements of the standard beginning in Section 4 are presented in a two-column format.The left column presents the requirements of the standard; the right column provides clarificationand explanation of the requirements. Figu

24、res 115 are incorporated as part of the standard.Standard requirements should be considered minimum criteria and can be adapted to the needs ofthe User establishment. Demonstrably equal or better approaches are acceptable. When deviatingfrom the Standard, documentation should be provided. The Standa

25、rd is auditable by those trained in ventilation. An Audit Form is provided in theAppendix.iiiANSI/AIHA Z9.62008Copyright AIHA For personal use only. Do not distribute.ivANSI/AIHA Z9.62008This standard was developed and approved for submittal to ANSI by the Z9 Accredited StandardsCommittee on Safety

26、Standards for Exhaust Systems. Consensus was reached through a processinvolving the entire Z9 Committee in a series of reviews and in the final vote of approval.Committee approval of the standard does not necessarily imply that all committee members votedfor its approval. At the time it approved thi

27、s standard, the Z9 Committee had the following mem-bers:L. DiBerardinis, ChairJ. Price, Vice ChairMili Mavely, Secretariat Representative Organization Represented Name of RepresentativeAlliance of American Insurers S. EcoffAmerican Chemical Society D. WaltersAmerican Conference of Governmental Indus

28、trial Hygienists G. KnutsonAmerican Automobile Manufacturers Association G.M. AdamsAmerican Foundrymens Society R. ScholzAmerican Glovebox Society S. CrooksAmerican Society of Heating, Refrigerating, and Air Conditioning Engineers T. SmithAmerican Society of Safety Engineers P. OsleyConsolidated Edi

29、son of New York G. SlintakNational Association of Metal Finishers K.C. HankinsonNational Spray Equipment Manufacturers Association D.R. ScarboroughU. S. Department of Labor Occupational Safety and Health Administration I. WainlessIndividual MembersD. BlackburnD.J. BurtonJ.L. CookL. DiBerardinisC. Fi

30、gueroaS.J. GunselL. HathonR.L. KarbowskiT. KnutsonN. McManusD. OBrienK. PaulsonJ.M. PriceJ.C. RockM. RollinsJ.W. SheehySubcommittee Z9.6 on Exhaust Systems for Grinding, Polishing, and Buffing, which developed thisstandard, had the following members:M. Rollins, ChairL. CookG. AdamsR.L. KarbowskiD.J.

31、 BurtonCopyright AIHA For personal use only. Do not distribute.1Standard are encouraged to consult themost recent editions of the standardsand guidelines listed below.2.2 American National StandardsANSI/AIHA Z9.22006, FundamentalsGoverning the Design and Operation ofLocal Exhaust Systems.ANSI/AIHA Z

32、9.72006, Recirculation of Airfrom Industrial Process Exhaust Systems.ANSI/AIHA Z9.102007 FundamentalsGoverning the Design and Operation ofDilution Ventilation Systems in IndustrialOccupancies.ANSI B7.12000, The Use, Care, andProtection of Abrasive Wheels. ANSI/ASSE Z87.12003, Occupationaland Educati

33、onal Personal Eye and FaceProtection Devices.2.3 Occupational Safety and HealthAdministration StandardsCode of Federal Regulations, Title 29,Part 1910, Section 133, Eye and FaceProtection.Code of Federal Regulations, Title 29,Part 1910, Section 134, RespiratoryProtection.Code of Federal Regulations,

34、 Title 29,Part 1910, Subpart Z Toxic andHazardous Substances.2.4 Other Publications Industrial Ventilation: A Manual ofRecommended Practice, 26th Edition.Cincinnati, OH: ACGIH, 2007.1 Scope and Application1.1 Scope. The requirements and emissionand exposure control principles describedin this standa

35、rd represent the minimumcriteria intended 1) to protect the healthof personnel engaged in and working inthe vicinity of grinding, polishing, andbuffing operations; and 2) to control con-taminants generated by those operations.1.2 Application. The Standard applies toprocesses, equipment and operation

36、sthat use power-driven machinery togrind, polish, or buff a product withoutthe use of a liquid coolant. Where liquidcoolants are used, the cooling fluid maybe emitted as a mist, aerosol or vaporand additional provisions will be requiredby the user to control exposures, poolingof liquids, draining of

37、 ducts, use of misteliminators, and so forth, that are notcovered in the Standard.1.3 Where federal, state, or local regulationsor codes are more stringent, those regu-lations and codes shall have control.2 Referenced Standards andPublications2.1 General. The regulations, codes, stan-dards, and guid

38、elines cited in Sections2.2, 2.3, and 2.4 contain provisions thatthrough reference constitute provisions ofthis American National Standard. Therelated documents cited in 2.5 containadditional information but are not essen-tial for complying with the requirementsof this standard.At the time of public

39、ation, the editionsindicated were current. All standards andguidelines are subject to revision, andUsers of this American NationalAmerican National Standard Exhaust Systems for Grinding, Polishing, and BuffingAMERICAN NATIONAL STANDARD ANSI Z9.62008Copyright AIHA For personal use only. Do not distri

40、bute.ANSI/AIHA Z9.620082Hemeons Plant and Process Ventilation,3rd Edition. Boca Raton, FL: LewisPublishers, 1999.3 Definitions. The following paragraphsexplain terms used in Standard para-graphs and figures.3.1 Air Cleaning Equipment. A device orcombination of devices for separatingcontaminants from

41、 the air handled by anexhaust ventilation system.3.2 Balanced. In local exhaust systems abalanced system is one in which thedesired air flowrate is achieved simulta-neously in all branches of the system.Balance is usually achieved throughgood design, proper fitting and ductselection, and, when neces

42、sary, by theuse of balancing dampers.3.3 Branch duct. A duct connecting anexhaust hood to a main or submain duct.3.4 Commissioning, Commissioning Plan.A process or plan in which an exhaustventilation systems performance is iden-tified, verified, and documented before,during, and after design, constr

43、uction, orremodeling to assure proper operationand compliance with codes, standards,and user intentions. Commissioning endswhen tests and demonstrations have ver-ified that the system operates as intend-ed. A commissioning agent is often usedto administer the commissioning process,tailored to the ne

44、eds of the system.3.5 Contaminant. Also, Air Contaminant,Stressor. A substance (smoke, dust,fume, mist, vapor or gas) whose pres-ence in air is harmful, hazardous, or anuisance to humans.)3.6 Control Velocity. Also, CaptureVelocity. The velocity of air at a point inspace sufficient to draw contamina

45、ntsand contaminated air into an exhausthood.3.7 Cradle. A movable fixture, upon whichthe part to be ground or polished is sup-ported.Threshold Limit Valuesfor ChemicalSubstances and Physical Agents andBiological Exposure Indices. Cincinnati,OH: ACGIH. Published annually2.5 Related DocumentsCode of F

46、ederal Regulations, Title 29,Part 1910, Section 94 Ventilation.NFPA 702005, National Electric Code.NFPA 912004, Exhaust Systems for AirConveying of Vapors, Gases, Mists, andNoncombustible Particulate Solids.NFPA 6511998, Machining andFinishing of Aluminum and theProduction and Handling of AluminumPr

47、oducts.NFPA 68 2002, Explosion Prevention byDeflagration.NFPA 772007, Recommended Practiceon Static Electricity.NFPA 4801998, Storage, Handling andProcessing of Magnesium Solids andPowders.NFPA 480 ROP2002, Storage, Handlingand Processing of Metal Solids andPowders (which is intended to includethe s

48、tandards shown below). Note:NFPA 480 ROP has been proposed toincorporate older versions of NFPA 481-485 covering the processing of variousmetals. Older standards referenced hereare valid until rescinded.NFPA 4812000, Production,Processing, Handling and Storage ofTitanium.NFPA 4821996, Production,Pro

49、cessing, Handling and Storage ofZirconium.Ventilation Requirements for Grinding,Buffing and Polishing Operations (DHHSNIOSH Publication No. 75-207).Copyright AIHA For personal use only. Do not distribute.3.8 Cut-off wheels. Wheels of metal ororganic bonded abrasives used for saw-ing and cutting. These wheels may be ofthe non-reinforced, reinforced, heavilyreinforced, or metal center type. Cut-offwheels have diameter, thickness, andhole size dimensions.3.9 Design. The process that includes char-acterizing the interactions between emi