2000_2008.pdf

ANSI B15.1-2000(R08)(Reaffirmation of ASME B15.1-2000)American National Standard for Machine ToolsSafety Standards forMechanical Power Transmission ApparatusSecretariat and Accredited Standards Developer:AMT-The Association For Manufacturing Technology7901 Westpark DriveMcLean,VA 22102Approved American National StandarApproved:August 2,2000Reaffirmed:May 8,2008ANSIby the American National Standards Institute,Inc.AMERICAN NATIONAL STANDARDSBy approving this American National Standard,the ANSI Board of Standards Review confirms that the requirements fordue process,consensus,balance and openness have been met by AMT-The Association For ManufacturingTechnology(the ANSI-accredited standards developing organization).American National Standards are developed through a consensus process.Consensus is established when substantialagreement has been reached by directly and materially affected interests.Substantial agreement means much morethan a simple majority,but not necessarily unanimity.Consensus requires that all views and objections be considered,and that a concerted effort be made toward resolution.This process brings together volunteers and/or seeks out theviews of persons who have an interest in the topic covered by this publication.While AMT administers the process andestablishes procedures to promote fairess in the development of consensus,it does not write the document and it doesnot independently test,evaluate or verify the accuracy or completeness of any information or the soundness of anyjudgments contained in its standards or guidelines.American National Standards are promulgated through ANSI for voluntary use;their existence does not in any respectpreclude anyone,whether they have approved the standards or not,from manufacturing,marketing,purchasing,orusing products,processes,or procedures not conforming to the standards.However,users,distributors,regulatorybodies,certification agencies and others concerned may apply American National Standards as mandatoryrequirements in commerce and industry.AMT MAKES NO WARRANTY.EITHER EXPRESSED OR IMPLIED AS TO THE FITNESS OF MERCHANTABILITYOR ACCURACY OF THE INFORMATION CONTAINED WITHIN THIS STANDARD,AND DISCLAIMS AND MAKESNO WARRANTY THAT THE INFORMATION IN THIS DOCUMENT WILL FULFILL ANY OF YOUR PARTICULARPURPOSES OR NEEDS.AMT disclaims liability for any personal injury,property or other damages of any naturewhatsoever,whether special,indirect,consequential or compensatory,directly or indirectly resulting from the publication,use of,application or reliance on this document.AMT does not undertake to guarantee the performance of anyindividual manufacturer or sellers products or services by virtue of this standard or guide,nor does it take any positionwith respect to the validity of any patent rights asserted in connection with the items which are mentioned in or are thesubject of this document,and AMT disclaims liability for the infringement of any patent resulting from the use of orreliance on this document.Users of this document are expressly advised that determination of the validity of any suchpatent rights,and the risk of infringement of such rights,is entirely their own responsibility.In publishing or making this document available,AMT is not undertaking to render professional or other services for oron behalf of any person or entity,nor is AMT undertaking to perform any duty owed by any person or entity to someoneelse.Anyone using this document should rely on his or her own independent judgment,or as appropriate,seek theadvice of a competent professional in determining the exercise of reasonable care in any given circumstances.AMT has no power,nor does it undertake to police or enforce conformance to the requirements of this document.AMTdoes not certify,test or inspect products,designs,or installations for safety or health purposes.Any certification or otherstatement of conformance to any health or safety-related information in this document shall not be attributable to AMT andis solely the responsibility of the certifier or maker of the statement.NOTICE:This American National Standard may be revised or withdrawn at any time.The procedures of the AmericanNational Standards Institute require that action be taken periodically to reaffimm,revise,or withdraw this standard.Youmay contact the Secretariat for current status information on this,or other B11 standards.Individuals interested inobtaining up-to-date information on standards can access this information at http:www.nssn.org(or by contactingANSI).NSSN-A National Resource for Global Standards,provides a central point to search for standards informationfrom worldwide sources and can connect those who seek standards to those who supply them.Published by:AMT-The Association For Manufacturing Technology7901 Westpark Drive,McLean,VA 22102Copyright 2005 by AMT-The Association For Manufacturing Technology Allrights reservedNo part of this publication may be reproduced in any form,in an electronic retrieval system or otherwise,without prior written permission of the publisher.Printed in the United States of AmericaCONTENTSPAGEFOREWORD.COMMITTEE ROSTER.SUMMARY OF CHANGES.1SCOPE12 DEFINITIONS.23SAFEGUARDING OF HAZARDS.44SAFETY LABELS AND SIGNS.5FIGURES.8-12MANDATORY APPENDIX I.11INTERPRETATIONS.14FOREWORDThis Safety Standard for mechanical power transmission apparatus is the most universally applicablestandard concerned with safeguarding mechanical equipment.Few machines can operate without somemechanical linkage somewhere between the energy source and point of operation.The first edition of the B15 standard was approved in 1927 and reaffirmed in 1935.The second editionwas approved in the 1953 revision and reaffirmed in 1958.The third edition was approved in 1972 andhad departed from the format of previous editions in defining specific areas of responsibility and inestablishing performance requirements for the types of safeguarding that apply to mechanical powertransmission apparatus.The fourth edition was approved in 1984 followed by an Addenda which wasapproved in 1994 and(b)Addenda that was approved in 1995.The sixth edition was approved in 1996followed by an(1)Addenda that was approved in 1997 and(b)Addenda that was approved in 1998.Theseventh edition was approved in 2000.In 2005,ASME decided to withdraw as Secretariat to thisstandard.After appropriate notification to ANSI and public notice,the Association for ManufacturingTechnology(AMT)agreed to assume sponsorship and further development of this standard.AMT is anexisting ANSI-accredited standards developing organization for the ANSI B11 series of machine toolsafety standards.The purpose of this Standard is to provide guidance for minimizing the likelihood that people will incurinjury when in the proximity of mechanical power transmission apparatus.This standard is presented in aperformancemode rather than aspecificationmode to encourage the appropriate use of ingenuity andimagination in achieving a maximum degree of safeguarding.As written,the left-handed column containsthe requirements of this Standard,and the right-hand column(Explanatory Information)contains advisoryand illustrative material which is not a part of this Standard,but supports the intent of this Standard.Good judgment is encouraged to be used with this Standard in matters where safe practice and safetyare involved.It is also recognized that an appropriate attitude regarding safety can be beneficial in theavoidance of injury.Safety codes and standards are intended to enhance public health and safety.Revisions result fromCommittee considerations of factors such as technological advances,new data,and changingenvironmental and industry needs.Revisions do not imply that previous editions were inadequate.The values stated within the Standard are in both SI and U.S.customary units,with the latter placed inparentheses.These units are non-interchangeable and,depending on the country,as well as industrypreferences,the user will determine which values are to be regarded as the standard.This Standard was approved by the B15 Committee and by the ASME and designated as an Americannational Standard by the American National Standard Institute on August 2,2000.i