BS ISO 16900-1-2014 Respiratory protective devices Methods of test and test equipment Determination of inward leakage《呼吸保护装置 试验方法和试验设备 向内泄漏的测定》.pdf

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1、BSI Standards PublicationBS ISO 16900-1:2014Respiratory protective devices Methods of test and testequipmentPart 1: Determination of inward leakageBS ISO 16900-1:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 16900-1:2014.The UK participation in its prepa

2、ration was entrusted to TechnicalCommittee PH/4, Respiratory protection.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplic

3、ation. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 54033 2ICS 13.340.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committe

4、e on 31 October 2014.Amendments issued since publicationDate Text affectedBS ISO 16900-1:2014 ISO 2014Respiratory protective devices Methods of test and test equipment Part 1: Determination of inward leakageAppareils de protection respiratoire Mthodes dessai et quipement dessai Partie 1: Dterminatio

5、n des fuites vers lintrieurINTERNATIONAL STANDARDISO16900-1First edition2014-10-15Reference numberISO 16900-1:2014(E)BS ISO 16900-1:2014ISO 16900-1:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication

6、may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of t

7、he requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 16900-1:2014ISO 16900-1:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction vi1 Scope . 12 Normat

8、ive references 13 Terms and definitions . 14 Prerequisites 25 General test requirements . 26 Principle 27 Human test panel . 47.1 General . 47.2 Selection of test subjects 58 Test agents 59 Apparatus . 510 RPD preparation . 610.1 General . 610.2 Sample tubes and probe . 610.3 Sample flow rates. 1010

9、.4 Filtering RPD preparation 1010.5 Supplied breathable gas devices . 1210.6 Supplied breathable gas devices incorporating additional filtration capacity (combined RPD) 1211 Method(s) 1211.1 Test method General 1211.2 Test method 1: Sulfur hexafluoride (SF6) . 1311.3 Test method 2: Sodium chloride (

10、NaCl) . 1611.4 Test method 3: Corn oil aerosol . 2312 Test report 2513 Uncertainty of measurement 25Annex A (normative) Application of uncertainty of measurement .26Annex B (normative) Test exercise regime .28Annex C (normative) Material porosity test 32Annex D (normative) Human test panel 34BS ISO

11、16900-1:2014ISO 16900-1:2014(E)ForewordISO (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 interes

12、ted in a subject 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 C

13、ommission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO document

14、s should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible

15、for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the

16、 convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: For

17、eword - Supplementary informationThe committee responsible for this document is ISO/TC 94, Personal safety Protective clothing and equipment, Subcommittee SC 15, Respiratory protective devices.ISO 16900 consists of the following parts, under the general title Respiratory protective devices Methods o

18、f test and test equipment: Part 1: Determination of inward leakage Part 2: Determination of breathing resistance Part 3: Determination of particle filter penetration Part 4: Determination of gas filter capacity and migration, desorption and carbon monoxide dynamic testing Part 6: Mechanical resistan

19、ce/strength of components Part 7: Practical performance test methods Part 8: Measurement of RPD air flow rates of assisted filtering RPD Part 9: Determination of carbon dioxide content of inhaled air Part 10: Resistance to ignition, flame, radiant heat and heat Part 11: Determination of field of vis

20、ion Part 12: Determination of volume-averaged work of breathing and peak respiratory pressures Part 13: RPD using regenerated breathable gas and special application mining escape RPD: Consolidated test for gas concentration, temperature, humidity, work of breathing, breathing resistance and duration

21、 Part 14: Measurement of sound levelThe following parts are under preparation:iv ISO 2014 All rights reservedBS ISO 16900-1:2014ISO 16900-1:2014(E) Part 5: Breathing machine/metabolic simulator/RPD headforms/torso, tools and transfer standards ISO 2014 All rights reserved vBS ISO 16900-1:2014ISO 169

22、00-1:2014(E)IntroductionThis part of ISO 16900 is intended as a supplement to the respiratory protective devices (RPD) performance standard ISO 17420 (all parts). Test methods are specified for complete devices or parts of devices that are intended to comply with ISO 17420. If deviations from the te

23、st method given in this part of ISO 16900 are necessary, these deviations will be specified in ISO 17420.vi ISO 2014 All rights reservedBS ISO 16900-1:2014INTERNATIONAL STANDARD ISO 16900-1:2014(E)Respiratory protective devices Methods of test and test equipment Part 1: Determination of inward leaka

24、ge1 ScopeThis part of ISO 16900 specifies the test methods for determining inward leakage of respiratory interfaces (RI) and total inward leakage of complete respiratory protective devices (RPD) using specified test agents and incorporating specified body movements, at specified metabolic work rates

25、.These tests are conducted in laboratories using specific test agents under specified conditions and therefore do not indicate the performance of the device in actual use.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispens

26、able for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 16972, Respiratory protective devices Terms, definitions, graphical symbols and units of measurementISO 16900-5

27、1), Respiratory protective devices Methods of test and test equipment Part 5: Breathing machine/metabolic simulator/RPD headforms/torso, tools and transfer standardsISO 17420-3, Respiratory protective devices Performance requirements Part 3: Thread connectionISO 21748, Guidance for the use of repeat

28、ability, reproducibility and trueness estimates in measurement uncertainty estimationISO/TS 16976-2:2010, Respiratory protective devices Human factors Part 2: Anthropometrics3 Terms and definitionsFor the purposes of this document, the terms and definitions in ISO 16972 and the following apply.3.1as

29、sisted filtering RPDfiltering RPD in which air is moved through the filter(s) by means of a blower in addition to the breathing of the wearer3.2porous deviceRPD incorporating materials, excluding filters, that can be penetrated by gases and vapours during an inward leakage test, leading to an increa

30、se of the inward leakage3.3unassisted filtering RPDfiltering RPD in which air is drawn through the filter(s) solely by the breathing of the wearer1) To be published. ISO 2014 All rights reserved 1BS ISO 16900-1:2014ISO 16900-1:2014(E)4 PrerequisitesThe performance standard shall indicate the conditi

31、ons of the test. This includes the following:a) minimum number of test specimens;b) number of test subjects and selection criteria;c) operating conditions of the RPD;d) if appropriate, test method (including test agent and sampling methods) to be used;e) the exercise regime to be used;f) if appropri

32、ate, the use of crosswinds during particular test exercises;g) any exclusions from the test exercise regimes of Annex B;h) any prior conditioning, sequence of preconditioning, and/or testing required;i) any optional features of the RPD to be included in the assessment;j) characteristics to be assess

33、ed subjectively (if appropriate).5 General test requirementsUnless otherwise specified, the values stated in this part of ISO 16900 are expressed as nominal values. Except for temperature limits, values which are not stated as maxima or minima shall be subject to a tolerance of 5 %. Unless otherwise

34、 specified, the ambient conditions for testing shall be between 16 C and 32 C and (50 30) % RH. Any temperature limits specified shall be subject to an accuracy of 1 C.6 PrincipleA test subject wearing the RPD being tested performs a series of exercises while surrounded by an atmosphere containing a

35、 known concentration of a test substance. During these exercises, the concentration of the test substance inside and outside the respiratory interface (RI) is measured and compared.Three test agents are specified: one solid aerosol, one liquid aerosol, and a gas. The general principle of the test is

36、 the same for all substances. The test agent(s) used depend on the type of RPD being tested and are chosen according to Figure 1.NOTE Where a choice of gas or aerosol is permitted according to Figure 1, the aerosol test methods are preferred since SF6is regarded to be a greenhouse gas and its use is

37、 deemed undesirable where it could be avoided.2 ISO 2014 All rights reservedBS ISO 16900-1:2014ISO 16900-1:2014(E)NOTE Excluded are RPD which are obviously open to the atmosphere and which need not be tested using a challenge gas.Figure 1 Determination of porosity of RI (Respiratory Interface) ISO 2

38、014 All rights reserved 3BS ISO 16900-1:2014ISO 16900-1:2014(E)Figure 2 Determination of test methods for RI (Respiratory Interface)7 Human test panel7.1 General7.1.1 Before performing tests involving human test panels, account should be taken of any national or other regulations concerning, for exa

39、mple the medical history, any know allergies, examination, or supervision of the test subjects.4 ISO 2014 All rights reservedBS ISO 16900-1:2014ISO 16900-1:2014(E)7.1.2 Test subjects shall be trained by a competent person in wearing the type of RPD being tested.7.1.2.1 Unless the RPD manufacturers u

40、ser instructions specify that the device can be worn by persons with facial hair, then male panel members shall be clean shaven in the area of the face seal.7.1.2.2 Persons with scars or other facial blemishes in the area of the face seal that might give rise to face seal leakage shall not be select

41、ed for the test panel.7.1.2.3 Persons nominated as test subjects shall follow the manufacturers donning instructions, which can include a wearer seal check. If the person cannot achieve an adequate seal, following the manufacturers instructions, the person shall not be used for the inward leakage te

42、st.7.1.2.4 Where a manufacturer specifies a size range for wearers of the device, only subjects who fall within the specified range shall be used for the test.7.1.2.5 If more than one size of respiratory interface is manufactured, the test subjects shall select the most appropriate size in accordanc

43、e with the information supplied by the manufacturer.When using particle counting detection method, the test subject should refrain from smoking for at least 30 min before wearing the RPD.7.2 Selection of test subjectsThe human test panel shall be as defined in ISO/TS 16976-2:2010, 8.3, principal com

44、ponent analysis (PCA) panel. Further information is given in Annex D. The selection of the test subject shall be as specified by the RPD manufacturer according to the requirements of ISO 17420.8 Test agentsThree test agents are specified for the inward leakage tests:a) test agent 1 = sulfur hexafluo

45、ride gas (SF6);b) test agent 2 = sodium chloride aerosol (NaCl);c) test agent 3 = corn oil aerosol.All three test agents are equally acceptable for determination of inward leakage or total inward leakage, subject to the selection requirements of Figure 2.If porosity is indicated by the results from

46、the materials porosity test (Annex C), then it shall be tested using sulfur hexafluoride gas.9 Apparatus9.1 Enclosure, large enough to permit each test subject to complete the test exercise regime without restriction. A uniform and continuous flow of the relevant test atmosphere shall be delivered i

47、nto the test enclosure.The enclosure design and air flow management system shall permit the test atmosphere concentration within the area occupied by the RPD and wearer during all exercises to be homogeneous and stable (within 10 %) throughout the duration of any test.The air velocity through the en

48、closure measured close (within 30 cm) to the test subjects head, with the test subject standing centrally (on the treadmill where appropriate) and without crosswind conditions, shall be sufficient to maintain the specified concentration but shall not exceed 0,2 m/s. ISO 2014 All rights reserved 5BS

49、ISO 16900-1:2014ISO 16900-1:2014(E)The enclosure shall be designed so that the test subject is visible from the outside of the enclosure at all times while in the enclosure. A means of providing communication between the test subject(s) and the test supervisor(s) shall be provided.For RPD to be tested under crosswind conditions, provision shall be made to generate a crosswind of 2 m/s across the enclosure, from the front, rear or side (left or right), in the vicinity of the test sub