How to Determine GHG Emissions from Nickel Production
The guidance aims at specifying the general requirements of ISO 14040/14044 on Life Cycle Assessment, ISO 14067 on Product Carbon Footprint, and the Greenhous Gas Protocol Product Life Cycle Accounting and Reporting Standard to support the calculation of consistent product carbon footprints of nickel ores and concentrates, nickel intermediates, nickel metal and nickel sulfate.
Allocation
The current version of the guidance follows ISO 14404 on allocation hierarchy and does not follow a specific decision tree
To align with PACT Methodology: Use the allocation decision tree as indicated in Chapter 3.3.1.4 Figure 9 of the PACT Methodology
Biogenic emissions and removals
Not been as relevant for this product, so not currently included
Validity period
The current version of the guidance recommends to update PCFs every 3 years or whenever a significant change occurs in the production process or any other paramets affecting the emissions intensity of nickel products
To align with PACT Methodology: Define 'a significant change' as > 10% variance criteria as indicated in Chapter 3.2.3 of the PACT Methodology
Data quality metrics
The current version of the guidance refers to the requirements of ISO 14040 series standards and the GHG Protocol and does not mandate the calculation of any metrics related to Primary Data Share
To align with PACT Methodology: Use the data quality metrics as indicated in Chapter 4.2 of the PACT Methodology
Verification
The current version of the guidance does not include specific requirements about the level and basis for verification
To align with PACT Methodology: Follow the requirements specified in Chapter 5 of the PACT Methodology
