1、ANSI B11.12009 American National Standard for Machines Safety Requirements for Mechanical Power Presses Secretariat and Standards Developing Organization: The Association For Manufacturing Technology 7901 Westpark Drive McLean, VA 22102 Attn: Technology Department Approved: April 7, 2009 by the Amer
2、ican National Standards Institute AMERICAN NATIONAL STANDARD B11.12009 2009 AMT 1 AMERICAN NATIONAL STANDARDS By approving this American National Standard, the ANSI Board of Standards Review confirms that the requirements for due process, consensus, balance and openness have been met by AMT The Asso
3、ciation For Manufacturing Technology (the ANSI-accredited standards developing organization). American National Standards are developed through a consensus process. Consensus is established when substantial agreement has been reached by directly and materially affected interests. Substantial agreeme
4、nt means much more than 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 the views of persons who have an interest in the t
5、opic covered by this publication. While AMT administers the process and establishes procedures to promote fairness in the development of consensus, it does not write the document and it does not independently test, evaluate or verify the accuracy or completeness of any information or the soundness o
6、f any judgments contained in its standards or guidelines. American National Standards are promulgated through ANSI for voluntary use; their existence does not in any respect preclude anyone, whether they have approved the standards or not, from manufacturing, marketing, purchasing, or using products
7、, processes, or procedures not conforming to the standards. However, users, distributors, regulatory bodies, certification agencies and others concerned may apply American National Standards as mandatory requirements in commerce and industry. The American National Standards Institute does not develo
8、p standards and will in no circumstances give an interpretation of an American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations s
9、hould be addressed to the Secretariat (AMT). AMT MAKES NO WARRANTY, EITHER EXPRESSED OR IMPLIED AS TO THE FITNESS OF MERCHANTABILITY OR ACCURACY OF THE INFORMATION CONTAINED WITHIN THIS STANDARD, AND DISCLAIMS AND MAKES NO WARRANTY THAT THE INFORMATION IN THIS DOCUMENT WILL FULFILL ANY OF YOUR PARTI
10、CULAR PURPOSES OR NEEDS. AMT disclaims liability for any personal injury, property or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, application or reliance on this document. AMT does no
11、t undertake to guarantee the performance of any individual supplier or sellers products or services by virtue of this standard or guide, nor does it take any position with respect to the validity of any patent rights asserted in connection with the items which are mentioned in or are the subject of
12、this document, and AMT disclaims liability for the infringement of any patent resulting from the use of or reliance on this document. Users of this document are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely th
13、eir own responsibility. In publishing or making this document available, AMT is not undertaking to render professional or other services for or on behalf of any person or entity, nor is AMT undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document shoul
14、d rely on his or her own independent judgment, or as appropriate, seek the advice 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. AMT
15、does not certify, test or inspect products, designs, or installations for safety or health purposes. Any certification or other statement of conformance to any health or safety-related information in this document shall not be attributable to AMT and is solely the responsibility of the certifier or
16、maker of the statement. NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. You may contact the Secretariat for current s
17、tatus information on this, or other B11 standards. Individuals interested in obtaining up-to-date information on standards can access this information at http:www.nssn.org (or by contacting ANSI). NSSN - A National Resource for Global Standards, provides a central point to search for standards infor
18、mation from worldwide sources and can connect those who seek standards to those who supply them. Published by: AMT The Association For Manufacturing Technology 7901 Westpark Drive, McLean, VA 221024269, USA Copyright 2009 by AMT- The Association For Manufacturing Technology All rights reserved. Prin
19、ted in the United States of America 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.AMERICAN NATIONAL STANDARD B11.12009 2009 AMT 2 CONTENTS PAGE FOREWORD .4 EXPLANATION OF THE FORMAT, AN
20、D ANSI B11 CONVENTIONS.7 INTRODUCTION.8 1 10 SCOPE1.1 INCLUSIONS .10 1.2 10 EXCLUSIONS2 13 NORMATIVE REFERENCES2.1 .13 INFORMATIVE REFERENCES3 .15 DEFINITIONS4 28 RESPONSIBILITY4.1 28 SUPPLIER4.2 29 USER4.3 30 PERSONNEL5 .31 HAZARD CONTROL5.1 31 TASK AND HAZARD IDENTIFICATION5.2 32 RISK ASSESSMENT /
21、 RISK REDUCTION6 .34 DESIGN AND CONSTRUCTION6.1 GENERAL REQUIREMENTS ALL MACHINES34 6.2 35 ELECTRICAL REQUIREMENTS6.3 41 PRESSES USING FULLREVOLUTION CLUTCHES6.4 48 PRESSES USING PARTREVOLUTION CLUTCHES OR DIRECT DRIVE SYSTEMS6.5 62 MOTORIZED SLIDE ADJUSTMENT6.6 .62 SLIDE COUNTERBALANCE SYSTEMS6.7 A
22、IRCONTROLLING EQUIPMENT 63 6.8 .63 PRESSURE VESSELS6.9 63 HYDRAULIC EQUIPMENT6.10 .63 FLUIDPOWERED DIECLAMPING SYSTEM6.11 .64 PERFORMANCE OF SAFETYRELATED FUNCTION(S)6.12 64 STOPPINGPERFORMANCE MONITOR6.13 .66 SAFETY BLOCKS, SLIDE LOCKS OR OTHER DIE/SLIDE SUPPORT MEANS6.14 MOVING BOLSTERS68 6.15 SCR
23、AP CHUTES.69 7 70 LAYOUT, INSTALLATION, TESTING AND START-UP FOR THE PRESS SYSTEM7.1 70 GENERAL7.2 71 LAYOUT7.3 INSTALLATION71 7.4 LOCK-OUT/TAG-OUT .71 8 .73 SAFEGUARDING8.1 73 HAZARDS ASSOCIATED WITH PRESS PRODUCTION SYSTEMS OTHER THAN POINT-OF-OPERATION HAZARDSAMERICAN NATIONAL STANDARD B11.12009
24、2009 AMT 3 8.2 74 HAZARDS ASSOCIATED WITH BROKEN OR FALLING COMPONENTS8.3 PERIMETER SAFEGUARDING74 8.4 77 POINT-OF-OPERATION SAFEGUARDING8.5 77 GUARDS8.6 .80 SAFEGUARDING DEVICES8.7 92 SAFEOPENING SAFEGUARDING8.8 .93 PERFORMANCE OF THE SAFETYRELATED FUNCTION(S)9 .94 SETUP, OPERATION AND MAINTENANCE9
25、.1 94 PROCEDURES9.2 94 DIE SET-UP9.3 .97 OPERATION9.4 100 INSPECTION AND MAINTENANCE9.5 101 TRAINING9.6 103 SUPERVISION9.7 ACCESS CONTROL104 9.8 MOVING BOLSTERS .102 10 105 ADDITIONAL REQUIREMENTS FOR PSDI OPERATION10.1 105 GENERAL10.2 .105 “PASS-THROUGH“ HAZARDS10.3 .105 MULTIPLE OPERATORS AND MULT
26、IPLE PSDI ACTUATING CONTROLS10.4 .106 PRESENCE-SENSING DEVICE USED FOR PSDI10.5 PART SENSING DEVICE FOR PSDI.106 10.6 PSDI SYSTEM DOCUMENTATION .107 ANNEX A FIGURES.108 ANNEX B EXAMPLES OF TASK-BASED HAZARDS120 ANNEX C SAFETY DISTANCE.124 ANNEX D DESIGN CONSIDERATIONS FOR POWER PRESS CONTROLS 133 AN
27、NEX E DESIGN CONSIDERATIONS FOR MICROPROCESSOR-BASED CLUTCH/BRAKE CONTROLS.137 ANNEX F PERFORMANCE OF THE SAFETY-RELATED FUNCTION(S).139 ANNEX G FLOW CHARTS FOR MODE SELECTION AND INITIATION OR ENABLING .141 ANNEX H CHECK LIST146 ANNEX I TYPICAL DIE SETTING PROCEDURES.162 ANNEX J ANSI AIHA Z10.163 A
28、NNEX K WEEKLY PRESS INSPECTION REPORT, CHECKLIST the size, thickness and kind of pieces to be worked; the design and construction of dies; the required accuracy of the finished work; the skill of operators; the length of run; and the method of feeding, including part and scrap removal. Because of th
29、ese varying factors in the operations and in the workplace, a wide variety of pointofoperation safeguarding methods (guards and protective devices) has been covered in this standard. Pointofoperation safeguarding, the single most important factor in the elimination of injuries from presses, can only
30、 be determined by the user. A production system consists of the press as one component, dies (tooling) as another component, feeding methods (including part or scrap removal) as a third component, and pointofoperation safeguarding as the fourth component. The vital fourth component can be evaluated
31、for effectiveness only after the first three components and operator involvements are known. Since this information is known only by the user, the responsibility for conformance with clause 8 has been assigned accordingly. The assignment of responsibility of the user for proper pointofoperation safe
32、guarding has existed since the first B11.1 standard, approved in 1922. Mechanical power presses and associated equipment technologies are continuously evolving. This standard reflects the most commonly used and time-tested state of the art at the time of its approval. The inclusion or omission of la
33、nguage relative to any evolving technology, either in the requirements or explanatory area of this standard, in no way infers acceptance or rejection of such technologies. HISTORY The project on Safety Standard for Power Presses, B11, was initiated under the procedures of the American Engineering St
34、andards Committee (which became the American Standards Association, the United States of America Standards Institute, and in 1969 the American National Standards Institute), with the National Safety Council as sponsor. The first standard, bearing the title Safety Code for Power Presses and Foot and
35、Hand Presses, was developed by Sectional Committee B11 and was approved on November 13, 1922. Only two purposes of that “code“ were listed. The first and primary use was for state industrial commissions in developing their workplace codes. The second use was as an operating guide for users operating
36、 press production systems. Revisions of the standard were issued on November 11, 1926; October 22, 1937; January 12, 1948; January 19, 1960; February 17, 1971; January 22, 1982; April 4, 1988; and November 6, 2001. The philosophy underlying the 1971 standard was handsoutofdie operation (HOOD). After
37、 the adoption of the 1971 standard by ANSI and its reference by OSHA regulations, many users documented an absolute inability to meet the handsoutofdie objective. Accordingly, in 1974 OSHA modified the HOOD requirement, and subsequent versions of the ANSI B11.1 standard incorporate that modification
38、. However, HOOD should be considered in the application of the press production system, with appropriate AMERICAN NATIONAL STANDARD B11.12009 2009 AMT 5safeguarding, to enhance the safe operation of mechanical power presses. In this 2009 edition of the standard, the B11.1 Subcommittee reviewed the B
39、11.1 2001 standard to incorporate current mechanical power press safety practice, and to increase explanatory material related to the standard. New areas that have been added include requirements for risk assessment and risk reduction for increasingly complex automatic press production systems that
40、may include tandem and transfer presses with use of perimeter safeguarding. In addition, new pressroom technology including direct drive servo presses has been incorporated. The current edition also integrates NFPA 79 requirements directly within the standard, including two hand control and stop fun
41、ction requirements, moving parts (other than point-of-operation) and safeguarding supplier responsibilities. Finally, the current edition of ANSI B11.1 provided new requirements for slide locks, moving bolsters and scrap chutes. Subsequent to beginning the revision of B11.1, the ANSI B11 Accredited
42、Standards Committee (ASC) authorized creation of an overarching (“A-level”) standard dealing with general safety requirements for the entire series of machines. ANSI B11 was approved in August 2008. Since B11.1 was already well into its revision at that point, the B11 ASC agreed to allow this curren
43、t (2009) version of the ANSI B11.1 standard to proceed absent integration with the ANSI B11 “A-level” standard. Effective Date The following information on effective dates is informative guidance only, and not a normative part of this standard. The subcommittee recognizes that some period of time af
44、ter the approval date on the title page of this document is necessary for suppliers and users to develop new designs, and/or modify existing designs or manufacturing processes in order to incorporate the new and/or revised requirements of this standard into their product development or production sy
45、stem. The subcommittee recommends that suppliers complete and implement design changes for new machine tools and machine tool systems within 30 months of the approval of this standard. The subcommittee recommends that users should evaluate whether an existing machine tool and machine tool system has
46、 acceptable risk within 30 months of the approval date of this standard using generally recognized risk assessment methods. If the risk assessment shows that modification(s) is necessary, refer to the requirements of this standard or the machine specific standard to implement protective measures for
47、 appropriate risk reduction. Inquiries with respect to interpretations of this standard, and suggestions for its improvement, are welcomed and should be sent to the Association For Manufacturing Technology, 7901 Westpark Drive, McLean, Virginia 221024269, Attention: B11 Secretariat. This standard wa
48、s processed and submitted for ANSI approval by the B11 Accredited Standards Committee on Safety Standards for Machines. Committee approval of this standard does not necessarily imply that all committee members voted for its approval. At the time this standard was approved as an American National Sta
49、ndard, the ANSI B11 Accredited Standards Committee was composed of the following member organizations: John W. Russell, PE, CSP, Chairman Gary D. Kopps, Vice-Chairman David A. Felinski, Secretary Organizations Represented Name of Representative Delegate Alternate Aerospace Industries Association of America Willard J. Wood, ARM Lance E. Chandler, PE Aluminum Extruders Council Melvin Mitchell Doug Hart American Society of Safety Engineers Bruce W. Main, PE George V. Karosas, PE, CSP
