1、ANSI B11.2 2013 American National Standard for Machines Safety Requirements for Hydraulic and Pneumatic Power Presses Secretariat and Accredited Standards Developer: B11 Standards, Inc., POB 690905 Houston, TX 77069-0905, USA www.b11standards.org Approved: 12 FEBRUARY 2013 by the American National S
2、tandards Institute COPYRIGHT PROTECTED DOCUMENT Copyright 2013 by B11 Standards, Inc. All rights reserved. Printed 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 B11 St
3、andards, Inc. AMERICAN NATIONAL STANDARD B11.2 2013 2013 B11 Standards, Inc. Page 2 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 B11 Standa
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17、ny health or safety-related information in this document shall not be attributable to B11 Standards, Inc., and is 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 NOTICE: This American National Standard may be revised or withdrawn at any time.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 American Nati
18、onal Standards Institute require that periodic action be taken to reaffirm, revise, or withdraw this standard. You may contact the Secretariat for current status information on this, or other B11 standards. Published by: B11 Standards, Inc., Houston, TX 77069, USA Copyright 2013 by B11 Standards In
19、c. All rights reserved. Printed 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 B11.2 2013 2013 B11 Standards, Inc. Page 3 Tabl
20、e of Contents Page FOREWORD VIII HISTORY . viii EFFECTIVE DATE. viii DEVELOPMENT . x INTRODUCTION . XII 1 SCOPE . 15 1.1 Inclusions. 15 1.2 Exclusions . 15 2 NORMATIVE REFERENCES . 16 2.1 Informative References . 17 3 DEFINITIONS . 18 4 RESPONSIBILITY 22 4.1 Supplier responsibilities . 22 4.2 User r
21、esponsibilities . 22 4.3 Personnel . 23 5 RISK ASSESSMENT PROCESS . 24 6 DESIGN AND CONSTRUCTION 26 6.1 General requirements all machines 26 6.1.1 Hazards associated with moving parts . 26 6.1.2 Hazards associated with broken components 26 6.1.3 Piping / Hosing / Tubing . 26 6.1.4 Gauges 27 6.1.5 Pr
22、ess capacity data plate . 27 6.1.6 Pressure setting data plate(s) 27 6.1.7 Pressure rating of components . 27 6.1.8 Hydraulic/pneumatic system overpressure protection . 27 6.1.9 Cylinder(s) 27 6.1.10 Pressure vessels (pneumatic and hydraulic) 28 6.1.11 Isolation and energy dissipation . 28 6.1.12 In
23、tensification of pressure . 28 6.1.13 Control valves . 29 6.1.14 Slide counterbalance systems . 29 6.2 Electrical requirements . 29 6.2.1 Disconnect switch 30 6.2.2 Motorstart buttons 30 6.2.3 Motorstarter 30 6.2.4 Voltage 31 6.2.5 Grounds 31 6.2.6 External and line interferences 31 6.3 Hydraulic /
24、pneumatic controls 31 6.3.1 Hydraulic/ pneumatic circuits 31 6.3.2 Controlled gravity descent . 31 AMERICAN NATIONAL STANDARD B11.2 2013 2013 B11 Standards, Inc. Page 4 6.4 Electrical cycling controls 32 6.4.1 General requirements for stop functions, circuits and actuators 32 6.4.2 Cycle control sys
25、tem 36 6.4.3 Operating modes 37 6.5 Load holding during production. 46 6.5.1 Single cylinder systems . 46 6.5.2 Multiple cylinder systems 46 6.5.3 Load holding system failure 47 6.6 General pneumatic requirements . 47 6.6.1 Safety Shut-off 47 6.6.2 Pneumatic air quality 47 6.6.3 Regulator 48 6.6.4 L
26、ubrication 48 6.6.5 Environmental influence 48 6.6.6 Loss of system pressure 48 6.7 General hydraulic requirements . 49 6.7.1 Hydraulic fluid quality 49 6.7.2 Temperature control . 49 6.7.3 Accumulators . 49 6.8 Moving bolsters . 50 6.8.1 Motion control circuits . 50 6.8.2 Audible or visual warnings
27、 51 6.8.3 Manual control of bolsters . 51 6.9 Scrap Chutes . 51 6.9.1 Scrap Chute Cover(s) . 51 6.10 Power operated dieclamping system . 52 6.10.1 Capability 52 6.10.2 Fluidsupply failure 52 6.10.3 Loss of clamping capability . 52 6.11 Performance of the safetyrelated function(s) 52 6.11.1 Programma
28、ble electronic systems 53 6.12 Stopping performance monitor 53 6.13 Safety blocks, slide locks or other die/slide support means 53 6.13.1 Safety block(s) (static load rated) 54 6.13.2 Slide lock(s) 54 7 LAYOUT, INSTALLATION, TESTING AND START-UP FOR THE PRESS SYSTEM . 55 7.1 General . 55 7.2 Layout
29、55 7.3 Installation . 57 7.3.1 Floor loading. 57 7.3.2 Anchoring . 57 7.3.3 Electrical requirements for installation . 57 7.3.4 Lockout/tagout . 57 7.3.5 Lighting . 58 7.4 Testing and start-up 58 7.4.1 Specific testing set-up and inspection for slide lock systems . 59 AMERICAN NATIONAL STANDARD B11.
30、2 2013 2013 B11 Standards, Inc. Page 5 7.4.2 Inspection of safety block interlocks. 59 8 SAFEGUARDING . 59 8.1 Hazards associated with press production systems 59 8.2 Hazards associated with broken components 61 8.3 Perimeter safeguarding . 61 8.4 Point-of-operation safeguarding 63 8.5 Guards 65 8.5
31、.1 Design, construction, application, adjustment . 65 8.5.2 Die enclosure guards . 65 8.5.3 Fixed barrier guards . 66 8.5.4 Adjustable barrier guards 66 8.5.5 Interlocked barrier guards 66 8.5.6 Partial enclosure. 68 8.6 Safeguarding devices 68 8.6.1 Point-of-operation safeguarding devices 68 8.6.2
32、Twohand devices 69 8.6.3 Presence-sensing safeguarding device 70 8.6.4 Pull-back device . 75 8.6.5 Restraint device (holdout) 76 8.6.6 Movable barrier device . 76 8.7 Safeopening safeguarding 78 8.8 Performance of the safetyrelated function(s) 78 9 SETUP, OPERATION no deviation is permitted. The ter
33、m “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 the term “MAY” denotes a permissible course of action within the
34、 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 guides to assist in conformance with the standard. The B11 standa
35、rds generally use the term “OR” as an inclusive disjunction, meaning one or the other or both, but on occasion will use the term “and/or” to emphasize the fact that both are fully intended in cases where the Subcommittee believed it was imperative to make that clear. A distinction between the terms
36、“individual” and “personnel” is drawn. Individual includes personnel (employees, 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., vis
37、itors, vendors, etc.). Suggestions for improvement of this standard will be welcome. They should be sent to B11 Standards, Inc. dfelinskib11standards.org. AMERICAN NATIONAL STANDARD B11.2 2013 2013 B11 Standards, Inc. Page 10 DEVELOPMENT This standard was prepared by the B11.2 Subcommittee, processe
38、d 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 Standard, the
39、 ANSI B11 Accredited Standards Committee was composed of the following Members: Alan Metelsky, Chairman Barry Boggs, Vice-Chairman David Felinski, Secretary Organizations Represented Name of Representative Delegate Alternate Aerospace Industries Association of America Willard Wood Lisa Goldberg / Ch
40、ris Carnahan Aluminum Extruders Council Melvin Mitchell Scott Burkett American Society of Safety Engineers Bruce Main, PE, CSP George Karosas, PE,CSP Association For Manufacturing Technology Russell Bensman Alan Metelsky The Boeing Company Don Nelson Lance Chandler, PE Canadian Standards Association
41、 Elizabeth Rankin, CRSP Walter Veugen Deere Type-B standards (generic safety standards) deal with one or more safety aspects or one or more types of safeguards that can be used across a wide range of machinery: Type-C standards (machinery safety standards) deal with detailed safety requirements for
42、a particular machine or group of machines. This ANSI B11.2 standard on hydraulic / pneumatic power presses is a “Type-C” standard. The ANSI B11.0 standard on general safety requirements common to ANSI B11 machines is primarily a “Type-A” standard in that it applies to a broad array of machines and c
43、ontains very general requirements. However, in many areas it also contains very specific requirements. B11.19, B11.20 and the B11 series Technical Reports are all typical “Type-B” documents addressing general safety elements that can be applied across a wide range of machinery (B11.19) or as a stand
44、ard when combining machines (B11.20). The B11 series of Technical Reports are informative documents that may be generally applied to many machine tools, and as such would fall into the “Type-B” group. The machine-specific (Type-C) B11 standards contain detailed safety requirements for a particular m
45、achine or group of machines (such as in the case of this standard). The B11.0 and the machine-specific B11 standards are intended to be used concurrently by the supplier and user of machines. When a Type-C standard deviates from one or more provisions dealt with by this standard or by a Type-B stand
46、ard, the Type-C standard requirement generally takes precedence. Any deviation in conforming to a requirement of any standard should be carefully evaluated and based on a documented risk assessment. Figure 1 Organization of the B11 Series of Documents C B A General Requirements automatically fed pre
47、sses; presses utilized for hydroforming, spotting or tryout; transfer presses; tandem line presses; presses used in production cells. See Annex A for figures of applicable covered machines. this inclusion is applicable to the press and not the process 1.2 Exclusions E1.2 Specifically excluded from t
48、his standard are: Many of the excluded machines are covered by other standards. Refer to clause 2, Referenced Standards. For machines listed in 1.2 for which no type-C reference standard is indicated below, please refer to ANSI B11.0 for guidance. balers; See ANSI B245.1, B245.2, and B245.5 cold hea
49、ders; See ANSI B11.7 diecasting machines; See ANSI B152.1 forging presses and hammers; See ANSI B24.1 now withdrawn guillotine paper cutters; See ANSI B65.3 high energy rate presses; See ISO 9189 (high speed presses) horizontal hydraulic extrusion presses; See ANSI B11.17 iron workers; See ANSI B11.5 laboratory machines or equipment used to determine properties of materials; See ASTM E1842 manually powered presses; meatprocessing presses; mechanical power presses; See ANSI B11.1 metal
