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1、A Reference number ISO 14123-2:1998(E) INTERNATIONAL STANDARD ISO 14123-2 First edition 1998-04-15 Safety of machinery Reduction of risks to health from hazardous substances emitted by machinery Part 2: Methodology leading to verification procedures Scurit des machines Rduction des risques pour la s
2、ant rsultant de substances dangereuses mises par des machines Partie 2: Mthodologie menant des procdures de vrification ISO 14123-2:1998(E) ISO 1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or m
3、echanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetcentraliso.ch X.400c=ch; a=400net; p=iso; o=isocs; s=central Printed in Switzerland ii Contents 1 Sco
4、pe1 2 Normative references1 3 Methodology.1 4 Verification .2 Annex A Flow diagram of steps leading to verification procedure.3 Annex B Examples of types of emission and how to assess them.4 Annex C Examples of relevant factors and their indicative parameters.5 Annex D Bibliography 6 -,-,- ISOISO 14
5、123-2:1998(E) iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a sub
6、ject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (I
7、EC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Sta
8、ndard ISO 14123-2 was prepared by the European Committee for Standardization (CEN) (as EN 626-2:1994) and was adopted, under a special “fast-track procedure“, by Technical Committee ISO/TC 199, Safety of machinery, with its approval by the ISO member bodies. ISO 14123 consists of the following parts
9、, under the general title Safety of machinery Reduction of risks to health from hazardous substances emitted by machinery: Part 1: Principles and specifications for machinery manufacturers Part 2: Methodology leading to verification procedures. Annex A forms an integral part of this part of ISO 1412
10、3. Annexes B, C and D are for information only. ISO 14123-2:1998(E) ISO iv Introduction ISO 14123-2 (EN 626-2) is one of a series of standards produced by CEN/CENELEC under mandates from CEC and EFTA. This series has been divided into several categories to avoid duplication and to develop a logical
11、structure which will enable rapid production of standards and easy cross-reference between them. The hierarchy of standards is as follows: a) Type A standards (generic safety standards) giving basic concepts, principles for design, and general aspects that can be applied to all machinery. b) Type B
12、standards (group safety standards) dealing with one safety aspect or one type of safety-related device that can be used across a wide range of machinery: type B1 standards on particular safety aspects (e.g. safety distances, surface temperature, noise, etc.). type B2 standards are safety related dev
13、ices (e.g. two-hand controls, interlocking devices, pressure-sensitive devices, etc.). c) Type C standards (machine safety standards) giving detailed safety requirements for a particular machine or group of machines defined in the scope of the standard. This is a type B1 standard and its primary pur
14、pose is to give guidance to the writers of type C standards when machines are identified as emitting hazardous substances as a significant risk. This part of ISO 14123 may also be used as guidance in controlling the risk where there is no type C standard for a particular machine. This part of ISO 14
15、123 also provides type C standard writers with guidance to enable the development of procedures relating to verification. Such procedures are required to take account of the health risks associated with the emission of hazardous substances at all stages in the life of a machine (see ISO/TR 12100-1,
16、3.11 and ISO 141231, clause 4). This part of ISO 14123 may also be used to assist designers and manufacturers to identify sources of emission which may subsequently affect the exposure of operators and others. -,-,- INTERNATIONAL STANDARD ISOISO 14123-2:1998(E) 1 Safety of machinery Reduction of ris
17、ks to health from hazardous substances emitted by machinery Part 2: Methodology leading to verification procedures 1 Scope This part of ISO 14123 defines a procedure which leads to the selection of critical factors relating to emissions of hazardous substances for the purpose of specifying suitable
18、verification procedures. This part of ISO 14123 is intended to be used in conjunction with ISO 14123-1 and relates specifically to clause 8 of that standard. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of
19、 ISO 14123. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 14123 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of
20、IEC and ISO maintain registers of currently valid International Standards. ISO 14123-1: 1) Safety of machinery Reduction of risk to health from hazardous substances emitted by machinery Part 1: Principles and specifications for machinery manufacturers ISO/TR 12100-1:1992Safety of machinery Basic con
21、cepts, general principles for design Part 1: Basic terminology, methodology 3 Methodology This clause defines the steps that shall be taken to lead to a verification procedure. NOTE These steps are summarized in annex A. 3.1 Identification of hazardous substances 3.1.1 Identify substances which may
22、be emitted during the intended use of the machine (see ISO/TR 12100-1 and ISO 14123-1, clause 4). 3.1.2 Determine which of these substances are hazardous to health and the nature of the hazard (see ISO 14123-1, 3.2). 1) To be published. -,-,- ISO 14123-2:1998(E) ISO 2 3.1.3 Where a number of substan
23、ces has been identified, the verification procedure should be carried out on key substances which represent worst-case properties. Key substances may be selected based on toxicity, corrosive properties, solvent properties, dustiness, etc. 3.2 Characterization of emissions For all significant emissio
24、ns of substances identified by 3.1.3, establish: the likely quantity or scale of emission under all foreseeable circumstances at all stages in the life of the machine; NOTE 1 Amounts may be characterized by one of a number of assessment techniques (see annex B). the location and direction of the emi
25、ssion with respect to the machine and the likely position of persons; when the emission is likely to occur; NOTE 2 This should relate to the likely presence of persons and the operating cycle of the machinery. the physical characteristics of the emission, e.g. phase, velocity, temperature, pressure;
26、 whether it is likely to create an airborne emission or surface contamination. 3.3 Identification of critical factors 3.3.1 Identify any relevant factor which causes an emission and on which the method of emission reduction is based. NOTE Relevant factors may be related to materials, energy or machi
27、ne design or performance; examples are given in annex C. 3.3.2 Identify critical factors. These are the relevant factors on which the emission is most dependent. 3.4 Specification of indicative parameters 3.4.1 Establish indicative parameters, which may be qualitative, related directly to the critic
28、al factors identified. NOTE Examples are given in annex C. 3.4.2 Specify the value, range of values, condition or state of the indicative parameter required to reduce emission. 4 Verification 4.1 Verification is carried out by collection of data relating to the indicative parameters. 4.2 Verificatio
29、n may include results from field testing, laboratory testing, measurements, examination or calculations. 4.3 A number of general test methods, which may be used as part of verification, are described in ENV 10931 and the following parts which are under preparation. More detailed test conditions for
30、a specific type or group of machines may be given in type C standards. -,-,- ISOISO 14123-2:1998(E) 3 Annex A (normative) Flow diagram of steps leading to verification procedure Table A.1 gives the sequence of steps to be taken in a verification procedure. Table A.1 ClauseSequence of stepsExamples 3
31、.1Identify hazardous sub- stances fl identify stage in life of the machine; identify the hazardous properties. 3.2Characterize emissions fl likely quantity or scale of emission; location of persons and direction of emissions; when the emission is likely to occur; physical characteristics; phase (e.g
32、. gas), temperature; airborne or surface contamination. 3.3.1Identify relevant factors fl materials: dustiness; usage rates, production rates; energy used: type; machine design: ergonomics; distances; automation; performance: efficacy. 3.3.2Select critical factors fl factors which most influence the
33、 emission of hazardous sub- stances; prioritize these to assist selection of indicative parameters. 3.4.1Specify indicative para- meters fl quantitative: obtained by measurements or calculations; qualitative: information obtained by e. g. visual inspection; visualization techniques, design details.
34、3.4.2Set parameter values, ranges, conditions or states fl requirements to give performance which reduces emissions. 4Specify verification pro- cedures specify information which relates to the specified indicative parameters; evidence from field/laboratory tests, measurements, visual inspections or
35、calculations, technical construction file. -,-,- ISO 14123-2:1998(E) ISO 4 Annex B (informative) Examples of types of emission and how to assess them Table B.1 gives examples of types of emission and their assessment. Table B.1 Type of emissionExamples of assessment techniques Nil or insignificant v
36、isual inspection; smoke tests; Tyndall beam lamp; pressure testing. Localized component performance; local concentration assessment. Total (possibly multipoint emissions) calculation from mass balance; test data. -,-,- ISOISO 14123-2:1998(E) 5 Annex C (informative) Examples of relevant factors and t
37、heir indicative parameters Table C.1 gives examples of factors which may affect the reduction of risks to health from hazardous substances emitted by machinery. Table C.1 CategoryRelevant factorsIndicative parameters MaterialsFeed rates, discharge rates Feed forms Process timing mass rate (kgh -1);
38、linear rate (mmmin-1); resultant airborne concentrations (mgm -3); dusty or solid, viscous, non-viscous or volatile liquids; feed times (min). EnergyThermal Electrical Mechanical Air motion temperature control (range C); rate of temperature rise or fall (Cmin -1); product discharge temperature (C);
39、liquid or gas coolant temperature (C); coolant flow rate (lh -1). energy absorbed (kWh); drive motor current (A). stirring rate (r/min -1); conveyor speed (mmin -1); mixing time (min). cooling or capture velocity (ms -1); exhaust gas velocity (ms -1) or flowrate (m3s-1). DesignSettings, geometry, or
40、ientationlid open or closed; time delay until lid opens (s); local exhaust ventilation, position; exhaust-duct diameter (mm); nearest operator position (m); height of material drop (m); direction of discharge. PerformanceSeal leaks Air cleaner Local exhaust ventilation Pollution control system Total
41、 emission seal integrity. separation efficiency (%); pressure loss across filter (Pa). capture efficiency (%). decontamination index. emission rate (gmin -1), pollutant concentration parameter (mgm -3). -,-,- ISO 14123-2:1998(E) ISO 6 Annex D (informative) Bibliography 1 ENV 1093-1:Safety of machinery Evaluation of the emission of airborne hazardous substances Part 1: Selection of test methods -,-,- -,-,- ISO 14123-2:1998(E) ISO ICS 21.120.40 Descriptors: vibration, rotors, flexible rotors, balancing, procedure. Price based on 6 pages -,-,-
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