1、 ANSI B11.12-2005 (R2015) American National Standard for Machines Safety Requirements for Roll-forming and Roll-bending Machines Secretariat and Accredited Standards Developer: B11 Standards, Inc. POB 690905 Houston, TX 77269 Approved: May 10, 2005 Reaffirmed: September 10, 2015 by the American Nati
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17、orldwide sources and can connect those who seek standards to those who supply them. Published by: B11 Standards, Inc. POB 690905, Houston, TX 77269 Copyright 2015 by B11 Standards, Inc. All rights reserved No part of this publication may be reproduced in any form, in an electronic retrieval system o
18、r otherwise, without prior written permission of the publisher. Printed in the United States of America iii CONTENTS PAGE FOREWORD . V EXPLANATION OF THE FORMAT, AND ANSI B11 CONVENTIONS VII INTRODUCTION . VII 1 SCOPE . 1 1.1 GENERAL . 1 1.2 DESCRIPTIONS 1 1.3 INCLUDED MACHINES 1 1.4 EXCLUDED MACHIN
19、ES . 2 2 REFERENCES . 2 3 DEFINITIONS . 3 4 RESPONSIBILITY 6 4.1 SUPPLIERS RESPONSIBILITY 6 4.2 USERS RESPONSIBILITY . 7 4.3 PERSONNELS RESPONSIBILITY 8 5 HAZARD CONTROL 8 5.1 TASK AND HAZARD IDENTIFICATION . 8 5.2 RISK ASSESSMENT / RISK REDUCTION . 10 6 DESIGN AND CONSTRUCTION . 11 6.1 GENERAL . 11
20、 6.2 COMPONENT SELECTION 11 6.3 MACHINE CONTROLS . 11 6.4 DESCRIPTION OF MODES OF OPERATION . 11 6.5 ELECTRICAL EQUIPMENT . 12 6.6 VOLTAGE . 12 6.7 PNEUMATIC AND HYDRAULIC SYSTEMS 12 6.8 FLUCTUATION IN OR INTERRUPTION OF POWER SOURCES . 13 6.9 ISOLATION OF POWER SOURCES 13 6.10 STORED ENERGY . 13 6.
21、11 INTERFERENCES . 14 6.12 PERFORMANCE OF THE SAFETY-RELATED FUNCTIONS . 14 6.13 MACHINE INITIATION 14 6.14 STOP AND EMERGENCY STOP CONTROLS 14 6.15 OPERATOR CONTROL STATIONS . 14 6.16 MANUALLY OPERATED CONTROL DEVICES 15 6.17 INDICATORS . 16 6.18 ELIMINATION OF, OR PROTECTION FROM, INHERENT HAZARDS
22、 17 7 INSTALLATION, TESTING AND START-UP 18 7.1 GENERAL . 18 7.2 FOUNDATION . 18 7.3 LIGHTING 18 7.4 TESTING AND START-UP 18 8 SAFEGUARDING . 19 8.1 GENERAL . 19 8.2 GUARDS . 19 8.3 SAFEGUARDING (PROTECTIVE) DEVICES . 19 iv 8.4 AWARENESS BARRIERS, DEVICES AND SIGNS . 19 8.5 SAFEGUARDING METHODS 20 8
23、.6 SAFE WORK PROCEDURES . 20 8.7 COVERS AND SHIELDS 20 8.8 COMPLEMENTARY EQUIPMENT . 20 8.9 SAFETY DISTANCE . 21 8.10 PERFORMANCE OF THE SAFETY-RELATED FUNCTION(S) . 21 9 OPERATION AND MAINTENANCE 22 9.1 TRAINING OF PERSONNEL . 22 9.2 LOCKOUT/TAGOUT/TRYOUT 23 9.3 SET-UP . 23 9.4 OPERATION 23 9.5 MAI
24、NTENANCE . 24 ANNEX A (INFORMATIVE) EXAMPLES OF ROLL-FORMING AND ROLL-BENDING MACHINES 25 ANNEX B (INFORMATIVE) PERFORMANCE OF THE SAFETY-RELATED FUNCTION(S) 31 ANNEX C (INFORMATIVE) GUIDELINES FOR GENERAL TRAINING OF OPERATORS OF ROLL-FORMING AND ROLL-BENDING MACHINES 32 ANNEX D (INFORMATIVE) AUDIT
25、 LIST 33 v Foreword (This Foreword is not part of the requirements of American National Standard B11.12-2005) The primary objective of this standard is to eliminate, control or reduce hazards to individuals associated with roll-forming and roll-bending machines by establishing requirements for the d
26、esign, construction, operation and maintenance of these machines. To accomplish this objective, responsibilities have been assigned to the supplier (e.g., manufacturer, modifier, rebuilder and integrator), the user, and individuals in the working environment. The safeguarding of production systems i
27、n rollforming and rollbending operations is complicated by the wide variety of operations and operating conditions; the variations in size, speed, thickness, and the kind of pieces to be worked; the required accuracy of the finished work; the skill of operators; the length of run; and the method of
28、sheet feeding and part removal. Because of these varying factors in the operations and in the workplace, a number of point-of-operation safeguarding methods (guards and devices) have been covered in this standard. The words “safe“ and “safety“ are not absolutes. An important element of safety is att
29、itude. While the objective of this standard is to eliminate, control, or reduce hazards, this standard recognizes that hazards cannot be practically reduced to zero in any human activity. This standard is not intended to replace good judgment, proper training, or personal responsibility. Operator sk
30、ill, job monotony, fatigue, and experience are safety factors that should be considered by the user. The original B11.12 Standard was approved in 1983 and reaffirmed in 1989 as originally written. B11.12 was then revised and approved in 1996. That (1996) standard was then revised (its third) by the
31、B11.12 Subcommittee, processed and administered by the Secretariat, and approved by the B11 Accredited Standards Committee for submittal to the ANSI Executive Standards Council as a newly revised American National Standard. Approval was given May 10, 2005. Roll-forming and roll-bending machine techn
32、ology is 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 language relative to any evolving technology, either in the requirements or explanatory area of this standard, in no way infers acc
33、eptance or rejection of such technologies. Inquiries with respect to the application of the substantive requirements of this standard and suggestions for its improvement are welcomed and are to be sent to the B11 Standards, Inc. POB 690905, Houston, TX 77269. Attention: B11 Secretariat. EFFECTIVE DA
34、TE The following is informative guidance only, and not a normative part of this standard. This Subcommittee recognizes that some period of time after the approval date on the title page of this document is necessary for suppliers and users to develop new designs, or modify existing designs or manufa
35、cturing processes in order to incorporate the new or revised requirements of this standard into their product development or production system. This Subcommittee recommends that suppliers complete and implement design changes for new machines within 30 months of the approval date of this standard. F
36、or existing or modified machines, this Subcommittee recommends that users should confirm that the equipment / process has tolerable risk using generally recognized risk assessment methods within 30 months of the approval date of this standard. If the risk assessment shows that modification(s) is nec
37、essary, refer to the requirements of this standard to implement protective measures for appropriate risk reduction. This standard was processed and submitted for ANSI approval by the B11 Accredited Standards Committee on Safety Standards for Machines. Committee approval of this standard does not nec
38、essarily imply that all committee members voted for its approval. At the time this document was approved as an American National Standard, the ANSI B11 Accredited Standards Committee was composed of the following member organizations: vi John W. Russell, PE, CSP Chairman Gary D. Kopps, Vice-Chairman
39、 David A. Felinski, Secretary Organizations Represented Name of Representative(s) Delegate Alternate Aerospace Industries Association of America Will J. Wood, ARM Lance E. Chandler Alliance of American Insurers John Russell, PE, CSP Keith Lessner Aluminum Extruders Council Melvin Mitchell Doug Hart
40、American Society of Safety Engineers Bruce Main, PE, CSP George Karosas, PE, CSP AMT- The Association For Manufacturing Technology Russell Bensman Dan Soroka Automotive Industry Action Group Ron Tillinger Roland Jagutis The Boeing Company Don R. Nelson Robert Eaker, PE CSP Can Manufacturers Institut
41、e Geoffrey Cullen Jenny Day General Motors Corporation Michael Taubitz Dallas Gatlin John Deere Gary D. Kopps Ellen K. Blanshan Metal Building Manufacturers Association Charles M. Stockinger Charles E. Praeger Metal Powder Industries Federation Dennis Cloutier, CSP Teresa F. Stillman National Instit
42、ute for Occupational Safety no deviation is permitted. The term “SHOULD” denotes a recommendation, a practice or condition among several alternatives, or a preferred method or course of action. Similarly, the term “CAN” denotes a possibility, ability or capability, whether physical or causal, and th
43、e term “MAY” denotes a permissible course of action within the limits of the standard. B11 conventions: Operating rules (safe practices) are not included in either column of this standard unless they are of such nature as to be vital safety requirements, equal in weight to other requirements, or gui
44、des to assist in compliance with the standard. The B11 standards do not use the term “and/or” but instead, the term “OR” is used as an inclusive disjunction, meaning one or the other or both. A distinction between the terms “individual” and “personnel” is drawn. Individual includes personnel (employ
45、ees, subcontractors, consultants, or other contract workers under the indirect control of the supplier or user) but also encompasses persons who are not under the direct or indirect control of the supplier or user (e.g., visitors, vendors, etc.). Gauge refers to a measuring or testing instrument; ga
46、ge refers to a limiting device (e.g., backgage). Suggestions for improvement of this standard will be welcome. They should be sent to B11 Standards, Inc.-POB 690905, Houston, TX 77269 - Attention: B11 Secretariat. Annexes A-D are for information purposes only. Introduction viii The primary purpose o
47、f every machine tool is to process parts. Hazards exist that may result in injury during production, maintenance, commissioning and de-commissioning. The primary purpose of the ANSI B11 series of machine tool safety standards is to devise and propose ways to minimize risks of those potential hazards
48、. This can be accomplished either by an appropriate machine design, by restricting personnel or other individuals access to hazard areas, and by devising work procedures to minimize personnel exposure to hazardous situations. This is the essence of the ANSI B11 series of safety standards. The respon
49、sibility to reduce these risks to a tolerable level, or eliminate them is divided between the equipment supplier (i.e., manufacturer, rebuilder, modifier, integrator), the equipment user and its operating personnel. The figure below provides an overview of this standard and in particular, the responsibilities and requirements for the supplier and user, including the user personnel. Note: Solid lines denote required references; dashed lines denote informative ones. This standard is segregated into the following clauses and attendant responsibilities (see also, the
