Page 70 - Materials Chemistry, Second Edition

52 LIFE CYCLE ASSESSMENT HANDBOOK

When gathering primary data or developing a unit process data set from
secondary data sources, it is generally advisable to collect as much data as pos-
sible at the greatest level of detail possible. For example, a unit process data
developed for a carbon footprint study may later be needed for use in a full
impact assessment study. If only greenhouse gas-related flows were included
in the original data set, then the data set will not be usable for analyses that
include additional impact indicators.
Figure 3.4 provides an example of a form that can be used for collecting
life cycle inventory data. More examples can be found in ISO 14044 Annex A:

Company name Contact telephone
Contact name Contact e-mail
Facility location
TIME COVERAGE Month Year COMPANY COVERAGE
Start Percent of company output of this material covered by this facility
End
TECHNOLOGY REPRESENTED (brief description) INDUSTRY COVERAGE
Percent of industry output of this material covered by this facility

REPORTING BASIS (basb on which all data In the form are reported; eg, 1000 lb of output, specified number of product units, etc.)
Product Output Basis (with units) ______________^___^«»_»________«_»»«_.
MATERIAL INPUTS TO PROCESS
List all raw material inputs to the process, normalized to the product output basis specified above.
Include incoming transport information (miles and mode: truck, rail, ship, etc.)
Units (lb,
Material name Amount kg, etc.) Distance Mode Distance Mode

Add lines as needed
Units (lb,
USEFUL OUTPUTS Name Amount kg, etc.)
Primary product
Coproducts
Recovered energy/heat
Recycled scrap
Add lines as needed
Source Units (gal,
WATER USAGE (river, lake, ocean, etc.) Amount liters, etc.)
Process water
Intake
Output
Cooling water
Intake
Output
ENERGY USE (direct process energy and fuels used to produce process steam)
Units
(kWh, gal,
Amount liters, etc.)
Electricity (grid)
Electricity (generated onsite) mmmmmmmmmmmmm _ Fuel for onsite generation
Natural gas
Distillate oil
Residual oil
Coal
Add lines as needed