1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 15686-2:2012Buildings and constructedassets Service life planningPart 2: Service life prediction proceduresBS ISO 15686-2:2012 BRITISH STANDARDNational forewordThis Britis
2、h Standard is the UK implementation of ISO 15686-2:2012. It supersedes BS ISO 15686-2:2001 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee CB/101, Service Life Planning.A list of organizations represented on this committee can be obtained on request to
3、 its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 68299 5 ICS 91.040.01 Compliance with a British Sta
4、ndard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 15686-2:2012 ISO 2012Buildings and constructed assets Ser
5、vice life planning Part 2: Service life prediction proceduresBtiments et biens immobiliers construits Conception prenant en compte la dure de vie Partie 2: Procdures pour la prvision de la dure de vieINTERNATIONAL STANDARDISO15686-2Second edition2012-06-01Reference numberISO 15686-2:2012(E)BS ISO 15
6、686-2:2012ISO 15686-2:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, wit
7、hout permission in writing from either ISO at the address below or ISOs member body in the country of the 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 15686-2:2012ISO 156
8、86-2:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Terms, definitions and abbreviated terms 13.1 Terms and definitions . 13.2 Abbreviated terms . 34 Methodology . 44.1 Brief description of service life prediction (SLP) . 44.2 Conne
9、ction to ISO 15686-1 and ISO 15686-8 . 45 Methodological framework . 65.1 Range of SLP and problem description 65.2 Preparation 75.3 Pre-testing . 95.4 Ageing exposure programmes 105.5 Analysis and interpretation 125.6 A complementary approach: the failure mode and effect analysis (FMEA) 136 Critica
10、l review .146.1 General description of critical review 146.2 Needs and requirements for critical review .146.3 Process of critical review 147 Reporting .14Annex A (informative) Guidance on process of SLP .17Bibliography .24BS ISO 15686-2:2012ISO 15686-2:2012(E)ForewordISO (the International Organiza
11、tion 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 subject for which a technical committee has been established
12、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 (IEC) on all matters of electrotechnical standardization.Int
13、ernational Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publica
14、tion as an International Standard requires approval by at least 75 % of the member bodies casting a vote.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 for identifying any or all such patent righ
15、ts.ISO 15686-2 was prepared by Technical Committee ISO/TC 59, Buildings and civil engineering works, Subcommittee SC 14, Design life.This second edition cancels and replaces the first edition (ISO 15686-2:2001), which has been technically revised.ISO 15686 consists of the following parts, under the
16、general title Buildings and constructed assets Service life planning: Part 1: General principles and framework Part 2: Service life prediction procedures Part 3: Performance audits and reviews Part 5: Life-cycle costing Part 6: Procedures for considering environmental impacts Part 7: Performance eva
17、luation for feedback of service life data from practice Part 8: Reference service life and service-life estimation Part 9: Guidance on assessment of service-life data Technical Specifiation Part 10: When to assess functional performanceThe following parts are under preparation: Part 4: Service Life
18、Planning using IFC based Building Information Modelling Technical Report Part 11: Terminologyiv ISO 2012 All rights reservedBS ISO 15686-2:2012ISO 15686-2:2012(E)IntroductionThe ISO 15686 series on buildings and constructed assets, including service life planning, is an essential contribution to the
19、 development of a policy for design life. A major impetus for the preparation of the ISO 15686 series is the current concern over the industrys inability to predict costs of ownership and maintenance of buildings. A secondary objective of service life planning is to reduce the likelihood of obsolesc
20、ence and/or to maximize the re-use value of the obsolete building components.The purpose of this part of ISO 15686 is to describe the principles of service life prediction (SLP) of building components and their behaviour when incorporated into a building or construction works considering various ser
21、vice environments. The SLP methodology is developed to be generic, i.e. applicable to all types of building components, and is meant to serve as a guide to all kinds of prediction processes. The methodology may be used in the planning of SLP studies regarding new and innovative components, whose per
22、formance is little known, or may be the guiding document in the assessment of already performed investigations in order to appraise their value as knowledge bases for SLP and reveal where complementary studies are necessary.This part of ISO 15686 is intended primarily for manufacturers who wish to p
23、rovide data on in-use performance of their products, test houses, technical approval organizations, etc., those who develop or draft product standards, and users who may not be directly involved in making service life predictions, but who use them as inputs to reference service lives, within audits
24、or reviews of service life planning, as information in environmental product declarations (EPDs), as inputs to service life prediction of assets and facilities in life-cycle costing, etc.NOTE For this part of ISO 15686 to be used for service life evaluation at the scale of complex products or at the
25、 scale of construction works, a guidance document could be necessary.For an improved understanding of the context of this part of ISO 15686, it is useful to read the other parts, in particular ISO 15686-1, which is the umbrella document of the ISO 15686 series.Data obtained in accordance with the me
26、thodology described in this part of ISO 15686 can be used in any context where appropriate, and specifically to obtain reference or estimated service life data as described in ISO 15686-8.Predictions can be based on evidence from previous use, on comparisons with the known service life of similar co
27、mponents, on tests of degradation in specific conditions or on a combination of these. Ideally, a prediction will be given in terms of the service life as a function of the in-use condition. In any case, the dependence of the service life on the in-use condition will be quantified in a suitable way.
28、 The reliability of the predicted service life of a component (PSLC) will depend on the evidence it is based on.The methods described in the ISO 15686 series are based on work carried out in many countries. In general terms, they are a development of the current standards on durability published by
29、the Architectural Institute of Japan, the British Standards Institution (BSI), the Canadian Standards Association (CSA), and the Italian Organization for Standardization (UNI). Specifically, this part of ISO 15686 is an extension and modification of the RILEM recommendation 64, “Systematic Methodolo
30、gy for Service Life Prediction”, developed by RILEM1)TC 71-PSL and TC 100-TSL. It also results from the work carried out in the CIB2)W080.1) The International Union of Testing and Research Laboratories for Materials and Structures.2) International Council for Building Research, Studies and Documenta
31、tion. ISO 2012 All rights reserved vBS ISO 15686-2:2012BS ISO 15686-2:2012Buildings and constructed assets Service life planning Part 2: Service life prediction procedures1 ScopeThis part of ISO 15686 describes procedures that facilitate service life predictions of building components, based on tech
32、nical and functional performance. It provides a general framework, principles and requirements for conducting and reporting such studies.It does not cover limitation of service life due to obsolescence or other non-measurable or unpredictable performance states.2 Normative referencesThe following re
33、ferenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 6241:1984, Performance standards in building Principles for th
34、eir preparation and factors to be consideredISO 6707-1, Building and civil engineering Vocabulary Part 1: General termsISO 15686-1, Buildings and constructed assets Service life planning Part 1: General principles and frameworkISO 15686-7, Buildings and constructed assets Service life planning Part
35、7: Performance evaluation for feedback of service life data from practiceISO 15686-8, Buildings and constructed assets Service-life planning Part 8: Reference service life and service-life estimation3 Terms, definitions and abbreviated terms3.1 Terms and definitionsFor the purposes of this document,
36、 the terms and definitions given in ISO 6707-1, ISO 15686-1 and the following apply.3.1.1accelerated short-term exposureshort-term exposure (3.1.19) in which the agent intensity (3.1.5) is raised above the levels expected in service3.1.2ageingdegradation due to long-term influence of agents (3.1.4)
37、related to use3.1.3ageing exposureprocedure in which a product is exposed to agents (3.1.4) believed or known to cause ageing for the purpose of undertaking/initiating a service life prediction (3.1.18) or comparison of relative performanceINTERNATIONAL STANDARD ISO 15686-2:2012(E) ISO 2012 All righ
38、ts reserved 1BS ISO 15686-2:2012ISO 15686-2:2012(E)3.1.4agentwhatever acts on a building or its parts to adversely affect its performanceEXAMPLE Person, water, load, heat.3.1.5agent intensitymeasure of the extent to or level at which an agent (3.1.4) is presentNOTE In this part of ISO 15686, the ter
39、m “agent intensity” refers figuratively to any quantity that conforms to the requirements for a measure, i.e. not only to UV radiation and rain intensity, etc., but also to relative humidity, SO2concentration, freezethaw rate and mechanical pressure, etc.3.1.6componentproduct manufactured as a disti
40、nct unit to serve a specific function or functions ISO 6707-1:2004, definition 6.1.33.1.7degradationprocess whereby an action on an item causes a deterioration of one or more propertiesNOTE Properties affected can be, for example, physical, mechanical or electrical. ISO 15686-8:2008, definition 3.43
41、.1.8degradation indicatordeficiency which shows when a performance characteristic (3.1.14) fails to conform to a requirementEXAMPLE When gloss is a performance characteristic, gloss loss is the corresponding degradation indicator. When mass (or thickness) is a performance characteristic, mass loss i
42、s the corresponding degradation indicator.3.1.9dose-response functionfunction that relates the dose(s) of a degradation (3.1.7) agent (3.1.4) to a degradation indicator (3.1.8)3.1.10inspection of buildingsperformance evaluation or assessment of residual service life of building parts in existing bui
43、ldings3.1.11in-use conditionany circumstance that can impact the performance of a building or other constructed asset, or a part thereof under normal use3.1.12long-term exposureageing exposure (3.1.3) under in-use conditions (3.1.11) and with a duration of the same order as the service life anticipa
44、ted3.1.13mechanismprocess causing change over time in the composition or microstructure of a component or material that can cause degradation2 ISO 2012 All rights reservedBS ISO 15686-2:2012ISO 15686-2:2012(E)3.1.14performance characteristicphysical quantity that is a measure of a critical propertyE
45、XAMPLE A performance characteristic can be the same as the critical property, for instance reflectance. On the other hand, if the critical property is strength, then thickness or mass can in certain cases be utilized as a performance characteristic.3.1.15performance requirementperformance criterionm
46、inimum acceptable level of a critical property3.1.16predicted service lifeservice life predicted from recorded performance over timeEXAMPLE As found in service life models or ageing tests.3.1.17predicted service life distributionprobability distribution function of the predicted service life (3.1.16
47、)3.1.18service life predictionSLPgeneric methodology which, for a particular or any appropriate performance requirement, facilitates a prediction of the service life distribution of a building or its parts for the use in a particular or in any appropriate environment3.1.19short-term exposureageing e
48、xposure (3.1.3) with a duration considerably shorter than the service life anticipatedNOTE A term sometimes used and related to this type of exposure programme is “predictive service life test”. A predictive service life test is a combination of a specifically designed short-term exposure and a perf
49、ormance evaluation procedure.3.1.20terminal critical propertyin an established set of critical properties for a building or a part critical property that first fails to maintain the corresponding performance requirement when subjected to exposure in a particular service environment3.1.21time acceleration factornumber or function used to transform the results of ageing of a component(s) derived from accelerated short-term exposure testing to a predicted service life or predicted service life distributi
