IEC TR 62725:2013

IEC/TR 62725 ®
Edition 1.0 2013-03
TECHNICAL
REPORT
colour
inside
Analysis of quantification methodologies for greenhouse gas emissions for
electrical and electronic products and systems

IEC/TR 62725:2013(E)
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IEC/TR 62725 ®
Edition 1.0 2013-03
TECHNICAL
REPORT
colour
inside
Analysis of quantification methodologies for greenhouse gas emissions for

electrical and electronic products and systems

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 13.020.30; 19.040 ISBN 978-2-83220-690-4

– 2 – TR 62725 © IEC:2013(E)
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative reference . 7
3 Terms and definitions . 7
4 Principles . 11
4.1 General . 11
4.2 Life Cycle Thinking (LCT) . 11
4.3 Relevance . 11
4.4 Completeness . 12
4.5 Consistency . 12
4.6 Accuracy . 12
4.7 Transparency . 12
5 Comparative study on the existing relevant documents . 12
6 Quantification framework . 13
6.1 General . 13
6.1.1 Provisions in CFP and LCA standards . 13
6.1.2 Electrotechnical industry guidance for basic steps of CFP study . 14
6.2 Goal and scope definition . 15
6.2.1 Provisions in CFP and LCA standards . 15
6.2.2 Electrotechnical industry guidance. 15
6.3 Unit of analysis . 16
6.3.1 Provisions in CFP and LCA standards . 16
6.3.2 Electrotechnical industry guidance. 17
6.4 System boundary . 18
6.4.1 General . 18
6.4.2 Life cycle stage and process map . 20
6.4.3 Attributional and consequential approaches . 25
6.4.4 Time boundary . 26
6.4.5 Specific GHG sources and sinks . 27
6.4.6 Cut-off criteria . 28
6.5 Trial estimation and decision on boundary to be cut-off . 30
6.5.1 Electrotechnical industry guidance. 30
6.6 Data collection and quality assessment . 31
6.6.1 General . 31
6.6.2 Primary data . 34
6.6.3 Secondary data . 34
6.6.4 Data quality . 35
6.7 Calculating GHG emissions . 36
6.7.1 General . 36
6.7.2 Allocation . 38
6.8 Uncertainty . 39
6.8.1 Provisions in CFP and LCA standards . 39
6.8.2 Electrotechnical industry guidance. 40
6.9 Use and maintenance scenario. 41
6.9.1 Provisions in CFP and LCA standards . 41

TR 62725 © IEC:2013(E) – 3 –
6.9.2 Electrotechnical industry guidance. 42
6.10 End-of-life stage scenario . 42
6.10.1 Provisions in CFP and LCA standards . 42
6.10.2 Electrotechnical industry guidance. 43
7 CFP-PCR . 45
7.1 Provisions in CFP standards . 45
7.2 Electrotechnical industry guidance . 46
8 Documentation . 46
8.1 Provisions in CFP and LCA standards . 46
8.2 Electrotechnical industry guidance . 47
9 Communication and verification . 48
9.1 General . 48
9.1.1 Provisions in CFP and LCA standards . 48
9.1.2 Electrotechnical industry guidance. 49
9.2 Options of communication . 50
9.2.1 Provisions in CFP and LCA standards . 50
9.2.2 Electrotechnical industry guidance. 50
9.3 Verification and assurance . 51
9.3.1 Provisions in CFP and LCA standards . 51
9.3.2 Electrotechnical industry guidance. 52
Annex A (informative) Example of existing databases which can be used for
quantification as secondary data . 54
Annex B (informative) Study results of comparison analysis on selected existing
relevant documents including International Standards and regional and national
initiatives . 57
Annex C (informative) Examples of PCRs/Sector specific rules . 65
Annex D (informative) Additional information on trial estimation approach and
uncertainty . 73
Bibliography . 75

Figure 1 – Basic steps of CFP study related to LCA framework . 15
Figure 2 – Analysis of relationship of three types of data according to ISO/DIS 14067 . 33

Table 1 – An example of BOM . 25
Table 2 – Example of applicable data types . 37
Table 3 – Example of applicable emission factors for each life cycle stage/unit
processes . 37

– 4 – TR 62725 © IEC:2013(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ANALYSIS OF QUANTIFICATION METHODOLOGIES
FOR GREENHOUSE GAS EMISSIONS FOR ELECTRICAL
AND ELECTRONIC PRODUCTS AND SYSTEMS

FOREWORD
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