IEC TR 62921:2016

IEC TR 62921 ®
Edition 2.0 2016-10
TECHNICAL
REPORT
colour
inside
Quantification methodology for greenhouse gas emissions for computers and
monitors
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IEC TR 62921 ®
Edition 2.0 2016-10
TECHNICAL
REPORT
colour
inside
Quantification methodology for greenhouse gas emissions for computers and

monitors
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.020.20; 35.160 ISBN 978-2-8322-3647-5

– 2 – IEC TR 62921:2016 © IEC 2016
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Terms and definitions . 8
3 Symbols and abbreviations . 11
4 Principles . 12
4.1 Comparing streamlined CFP to comprehensive CFP . 12
4.1.1 General . 12
4.1.2 Level of streamlining . 13
4.2 Viability of streamlined CFP . 13
4.2.1 Streamlining in IEC TR 62725 . 13
4.2.2 Metrics for streamlining . 14
4.2.3 Principles of CFP from IEC TR 62725 . 16
4.2.4 Uncertainty . 16
5 Approaches to streamlined CFP . 18
5.1 General . 18
5.2 Streamlining of data collection . 18
5.2.1 General . 18
5.2.2 Approaches to streamlining data collection . 18
5.3 Streamlining of data inputs . 19
5.3.1 General . 19
5.3.2 Approaches to streamlining data inputs (processing) . 19
6 Comparative study on existing CFP methodologies . 19
6.1 Examples of current worldwide streamlined CFP methodologies . 19
6.1.1 General . 19
6.1.2 Product attribute to impact algorithm (PAIA) . 20
6.1.3 iNEMI eco-impact evaluator . 20
6.1.4 Orange Telecom environmental methodology . 20
6.1.5 Japan CFP method . 20
6.1.6 China CFP method . 20
7 CFP product category rules . 20
7.1 General . 20
7.2 Goal . 21
7.3 Covered products . 21
7.3.1 In scope . 21
7.3.2 Out of scope . 21
7.4 Use of primary, primary aggregated and secondary data . 22
7.4.1 General . 22
7.4.2 Allocation methods . 22
7.5 Relevant emission factors and databases . 22
7.6 Functional unit . 22
7.6.1 General . 22
7.6.2 Life cycle stages included . 22
7.6.3 Life cycle stages excluded. 22
7.7 Production . 22

7.7.1 General . 22
7.7.2 State-of-the-art calculation recommendations . 23
7.8 Chassis . 23
7.8.1 State-of-the-art calculation recommendations . 23
7.8.2 Additional considerations for input data . 23
7.9 Populated printed wiring board (PWB) (excluding integrated circuits) . 24
7.9.1 State-of-the-art calculation recommendations . 24
7.9.2 Additional considerations for input data . 24
7.10 Integrated circuits (ICs) . 25
7.10.1 State-of-the-art calculation recommendations . 25
7.10.2 Additional considerations for input data . 25
7.11 Display . 26
7.11.1 State-of-the-art calculation recommendations . 26
7.11.2 Additional considerations for input data . 26
7.12 Data storage device . 26
7.12.1 State-of-the-art calculation recommendations . 26
7.12.2 Additional considerations for input data . 27
7.13 Optical disk drive (ODD) . 27
7.13.1 State-of-the-art calculation recommendations . 27
7.13.2 Additional considerations for input data . 27
7.14 Power supply unit (PSU, internal or external) . 27
7.14.1 State-of-the-art calculation recommendations . 27
7.14.2 Additional considerations for input data . 28
7.15 Battery . 28
7.15.1 State-of-the-art calculation recommendations . 28
7.15.2 Additional considerations for input data . 28
7.16 Final assembly . 29
7.16.1 State-of-the-art calculation recommendations . 29
7.16.2 Additional considerations for input data . 29
7.17 Final product packaging . 29
7.17.1 State-of-the-art calculation recommendations . 29
7.17.2 Additional considerations for input data . 29
7.18 Distribution . 30
7.18.1 State-of-the-art calculation recommendations . 30
7.18.2 Additional considerations for input data . 30
7.19 Use . 30
7.19.1 State-of-the-art calculation recommendations . 30
7.19.2 Additional considerations for input data . 31
7.20 End of life (EoL) . 31
7.20.1 State-of-the-art calculation recommendations . 31
7.20.2 Additional considerations for input data . 31
8 Documentation . 31
8.1 General . 31
8.2 CFP database . 32
9 Communication and verification . 32
Annex A (informative) Results of a comparative study on existing relevant streamlined
product carbon footprinting methodologies . 33
Annex B (informative) Generic example of streamlined CFP process for ICT products . 46
B.1 Initial analysis . 46

– 4 – IEC TR 62921:2016 © IEC 2016
B.2 Example calculation for a notebook computer . 46
B.3 Data collection . 47
Annex C (informative) Examples of relevant databases for the IT industry .
...