1、 ISO 2017 Sustainability in buildings and civil engineering works Carbon metric of an existing building during use stage Part 2: V erification Dveloppement durable dans les btiments et les ouvrages de gnie civil Mtrique du carbone des btiments existants pendant la phase oprationnelle Partie 2: Vrifi
2、cation INTERNATIONAL STANDARD ISO 16745-2 First edition 2017-05 Reference number ISO 16745-2:2017(E) ISO 16745-2:2017(E)ii ISO 2017 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be
3、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 the requ
4、ester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO 16745-2:2017(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 V erification . 2 4.1
5、General . 2 4.2 Procedure for review and independent verification 2 4.2.1 Independent verification of data . 2 4.2.2 Verification of the carbon metric declaration . 2 4.2.3 Independence and competence of verifiers . 2 4.2.4 Rules for data confidentiality 3 Bibliography 4 ISO 2017 All rights reserved
6、 iii Contents Page ISO 16745-2:2017(E) 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 bod
7、y interested 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 Electrote
8、chnical Commission (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 IS
9、O documents 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
10、 responsible 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 informat
11、ion given for the convenience of users and does not constitute an endorsement. For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO
12、) principles in the Technical Barriers to Trade (TBT) see the following URL: w w w . i s o .org/ iso/ foreword .html. This document was prepared by Technical Committee ISO/TC 59, Buildings and civil engineering works, Subcommittee SC 17, Sustainability in buildings and civil engineering works. This
13、edition of ISO 16745-2 together with ISO 16745-1 cancels and replaces ISO 16745:2015, of which they constitute a minor revision. ISO 16745:2015, Clause 7 has been transferred to ISO 16745-2 to keep the requirements for the verification of the carbon metric declaration independent of the requirements
14、 for the carbon metric calculation, reporting and communication, as well as other minor editorial modifications. A list of all the parts of the ISO 16745 series can be found on the ISO website.iv ISO 2017 All rights reserved ISO 16745-2:2017(E) Introduction Buildings contribute approximately one-thi
15、rd of global greenhouse gas (GHG) emissions. With its high share of emissions, the building and construction sector has the responsibility to take the global lead in implementing strategies to reduce GHG emissions. The building and construction sector has more potential and opportunity to deliver qu
16、ick, deep, and cost-effective GHG mitigation than any other sectors. Carbon dioxide (CO 2 ) emissions contribute to global warming, which is one of the most recognized environmental impacts attributable to buildings. In this context, measurement and reporting of GHG emissions from existing buildings
17、 are critical for enabling significant and cost-effective GHG mitigation. Currently, there has not been a globally agreed method established to measure, report, and verify potential reductions of GHG emissions from existing buildings in a consistent and comparable way. If such a method existed, it c
18、ould be used as a universal tool for measurement and reporting of GHG emissions, providing the foundation for accurate performance baselines of buildings to be drawn, national targets to be set, and carbon trading to occur on a level playing field. In principle, accurate and precise reporting can on
19、ly be achieved if GHG emissions (and removals) from all life cycle stages of buildings are measured and/or quantified. However, not all countries in the world have sufficient capacity or resources to use and apply life cycle assessment (LCA) methodologies. Respecting the need for collaboration on a
20、global scale, the need exists for a metric that is usable not only in countries with sufficient number of experts and a precise database, but also in those countries where experts services are limited and databases have considerable gaps. For instance, with the potential for global scale carbon trad
21、ing within building-related sectors, a method that is consistently usable in both the well-developed and developing world is needed. Operational energy use in buildings typically accounts for 70 % to 80 % of energy use over the building life cycle. Therefore, the operating stage of the buildings lif
22、e cycle is the focus of measurement and reporting of direct and indirect GHG emissions. This document aims to set out a globally applicable common method of measuring and reporting of associated GHG emissions (and removals) attributable to existing buildings, by providing requirements for the determ
23、ining and reporting of a carbon metric(s) of a building. The carbon metric is a measure (a partial carbon footprint) that is based on energy use data and related building information for an existing building in operation. It provides information related to the calculation of GHG emissions and can be
24、 used as an environmental indicator. Using this approach, the metric and its protocol can be applied by all stakeholders in both developing and well-developed countries, where building energy consumption and other relevant data can be retrieved or collected, making it useful and globally transferabl
25、e. This document aims to be practical for many stakeholders (i.e. not only for the building profession), who are expected to use the carbon metric of a building as reference for decision making in their business activities, governmental policies, and as a baseline for benchmarking. The simplicity of
26、 approach provides applicability at all scales, ranging from cities and building portfolios to individual buildings. ISO 2017 All rights reserved v Sustainability in buildings and civil engineering works Carbon metric of an existing building during use stage Part 2: V erification 1 Scope This docume
27、nt specifies requirements for the verification of a carbon metric calculation for GHG emissions of an existing building during the use stage, where the carbon metric calculation is performed in accordance with ISO 16745-1. NOTE Before verification, the carbon metric according to ISO 16745-1 is a cla
28、im. Only after the verification according to this document can the carbon metric be communicated as a carbon metric declaration. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For d
29、ated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 16745-1:2017, Environmental performance of buildings Carbon metric of a building during use stage Part 1: Calculation, reporting and communic
30、ation 3 T erms a nd definiti ons For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing pl
31、atform: available at h t t p :/ www .iso .org/ obp 3.1 carbon metric sum of annual greenhouse gas emissions and removals, expressed as CO 2equivalents, associated with the use stage of a building Note 1 to entry: For the purposes of this definition, the following terms are used as per their definiti
32、ons in the following reference documents: greenhouse gas emissions, removals (ISO 14064-1:2006, 2.5), CO 2 equivalents (ISO 14064-1:2006, 2.6) and building (ISO 6707-1:2014, 3.1.3). 3.2 v er i f i er party who makes sure or demonstrates that the process of measurement of a carbon metric (3.1) is tru
33、e, accurate, and justified INTERNATIONAL ST ANDARD ISO 16745-2:2017(E) ISO 2017 All rights reserved 1 ISO 16745-2:2017(E) 4 V erifica tion 4.1 General In developing a carbon metric declaration conforming to ISO 16745-1, verification is required and shall be conducted in accordance with this document
34、. The organization or individual determining the carbon metric shall establish the appropriate verification procedure to ensure that the declaration complies with the requirement of this document. This procedure shall include the verification format and documentation, as well as adequate access to v
35、erification rules and results. Where used, verification shall always be carried out by an independent body. 4.2 Pr oc edur e for r e vie w and independent v erification 4.2.1 Independent v erification of data Independent verification of data information shall, as a minimum, confirm, examine, and eva
36、luate the following: a) adherence to the principles given in ISO 16745-1:2017, 4.2 to 4.8; b) the data coverage, representativeness, reproducibility, sources; c) the plausibility, quality, and accuracy of the carbon metric data; d) the quality and accuracy of the supporting information. The organiza
37、tion or individual determining the carbon metric may define additional tasks for the independent verifier. 4.2.2 V erification of the car bon metric declar ation The independent verification procedure shall, as a minimum, be appropriate to determine whether the carbon metric declaration is in confor
38、mance with the relevant requirements of ISO 16745-1. The verification procedure shall be transparent. The independent verifier shall generate a report documenting the verification process, while adhering to obligations covering rules for data confidentiality (see 4.2.4). This report shall be availab
39、le to any person upon request. The verification procedure shall assess whether the information given in the carbon metric declaration accurately reflects the information in the documents on which the declaration is based. The verification procedure shall also determine if this information is valid.
40、4.2.3 Independenc e and c ompet enc e of v erifiers 4.2.3.1 Independenc e of v erifiers Independent verifiers shall not have been involved in the determination of a carbon metric and shall not have any conflict of interest resulting from their position in the organization or in relationship with oth
41、er stakeholders. 4.2.3.2 C ompet enc e of v erifiers Independent verifiers shall be able to demonstrate minimum requirements for the competence of verifiers, including knowledge of the following: a) relevant sector (e.g. energy sector); b) the building type;2 ISO 2017 All rights reserved ISO 16745-2
42、:2017(E) c) relevant standards in the fields of carbon metric declarations; and d) the regulatory framework within which requirements for carbon metric declarations have been prepared. 4.2.4 R ules for data c onfidentiality Proprietary information covered by intellectual property rights or similar l
43、egal restrictions or other such confidential data are not required to be made public. Business data identified as confidential that is provided for the independent verification process shall be kept confidential. If the organization or individual determining the carbon metric determines, based on th
44、e verification report, that the data supporting the carbon metric declaration are inadequate, the declaration shall not be published. ISO 2017 All rights reserved 3 ISO 16745-2:2017(E) Bibliography 1 ISO 6707-1:2004, Building and civil engineering Vocabulary Part 1: General terms 2 ISO 14021, Enviro
45、nmental labels and declarations Self-declared environmental claims (Type II environmental labelling) 3 ISO 14024, Environmental labels and declarations Type I environmental labelling Principles and procedures 4 ISO 14025, Environmental labels and declarations Type III environmental declarations Prin
46、ciples and procedures 5 ISO 14040, Environmental management Life cycle assessment Principles and framework 6 ISO 14064-1, Greenhouse gases Part 1: Specification with guidance at the organization level for quantification and reporting of greenhouse gas emissions and removals 7 ISO/TS 14067, Greenhous
47、e gases Carbon footprint of products Requirements and guidelines for quantification and communication 8 ISO 16343, Energy performance of buildings Methods for expressing energy performance and for energy certification of buildings 9 ISO 16346, Energy performance of buildings Assessment of overall en
48、ergy performance 10 ISO 21929-1, Sustainability in building construction Sustainability indicators Part 1: Framework for the development of indicators and a core set of indicators for buildings 11 ISO 21930, Sustainability in buildings and civil engineering works Core rules for environmental product
49、 declarations of products and services 12 ISO 21931-1, Sustainability in building construction Framework for methods of assessment of the environmental performance of construction works Part 1: Buildings 13 ISO/TR 21932, Sustainability in buildings and civil engineering works A review of terminology 14 EN 15643-2, Sustainability of construction works Assessment of buildings Part 2: Framework for the assessment of environmental performance 15 IEA STATISTICS,
