AS/NZS ISO 14041:1999

AS/NZS ISO 14041:1999 ENVIRONMENTAL MANAGEMENT—LIFE CYCLE ASSESSMENT—GOAL AND SCOPE DEFINITION AND INVENTORY ANALYSIS

PREFACE

CONTENTS

INTRODUCTION

1 Scope

2 Normative reference

3 Terms and definitions

3.1 ancillary input

3.2 coproduct

3.3 data quality

3.4 energy flow

3.5 feedstock energy

3.6 final product

3.7 fugitive emission

3.8 intermediate product

3.9 process energy

3.10 reference flow

3.11 sensitivity analysis

3.12 uncertainty analysis

4 LCI components

4.1 General

4.2 Product system

4.3 Unit process

4.4 Data categories

4.5 Modelling product systems

5 Definition of goal and scope

5.1 General

5.2 Goal of the study

5.3 Scope of the study

5.3.1 General

5.3.2 Function, functional unit and reference flow

5.3.3 Initial system boundaries

5.3.4 Description of data categories

5.3.5 Criteria for initial inclusion of inputs and outputs

5.3.6 Data quality requirements

5.3.7 Critical review

6 Inventory analysis

6.1 General

6.2 Preparing for data collection

6.3 Data collection

6.4 Calculation procedures

6.4.1 General

6.4.2 Validation of data

6.4.3 Relating data to unit process

6.4.4 Relating data to functional unit and data aggregation

6.4.5 Refining the system boundaries

6.5 Allocation of flows and releases

6.5.1 General

6.5.2 Allocation principles

6.5.3 Allocation procedure

6.5.4 Allocation procedures for reuse and recycling

7 Limitation of LCI (interpreting LCI results)

8 Study report

Annex A - Examples of a data collection sheet

A.1 General

A.2 Example of data sheet for upstream transportation

A.3 Example of data sheet for internal transportation

A.4 Example of data sheet for unit process

A.5 Life Cycle Inventory Analysis data collection sheet

Annex B - Examples of different allocation procedures

B.1 General

B.2 Avoiding allocation

B.3 Allocation by physical relationships

Bibliography