Product Category Rules (PCR) for preparing an ... - PCR Library
Product Category Rules (PCR) for preparing an ... - PCR Library
Product Category Rules (PCR) for preparing an ... - PCR Library
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process does not need to be included. If the waste will be treated through water<br />
treatment or incineration, these processes need to be included.<br />
Boundaries in the life cycle<br />
The boundaries in the product life cycle are described in Figure 1. The construction of<br />
the site <strong>an</strong>d infrastructure, as well as the production of m<strong>an</strong>ufacturing equipment <strong>an</strong>d<br />
activities of the workers, does not need to be included.<br />
Boundaries towards other technical systems<br />
Boundaries towards other technical systems describe the inputs of material <strong>an</strong>d other<br />
components towards other systems, as well as outputs of materials towards other<br />
systems. For the inputs of recycled materials <strong>an</strong>d energy towards the product<br />
m<strong>an</strong>ufacturing phase, the tr<strong>an</strong>sportation between the recycling process <strong>an</strong>d use of<br />
recycled materials shall be included in the data set. For the production of recyclable<br />
products during the m<strong>an</strong>ufacturing phase, the tr<strong>an</strong>sportation towards the recycling<br />
process shall be included.<br />
(Note: Further expl<strong>an</strong>ations are provided in Section 7 on open-loop recycling)<br />
Boundaries regarding geographical coverage<br />
The m<strong>an</strong>ufacturing phase may cover m<strong>an</strong>ufacturing processes located on <strong>an</strong>y sites<br />
around the world. For processes located in a specific region, the data used should be<br />
representative of the region. The data <strong>for</strong> the main components shall be the specific<br />
regional data <strong>for</strong> the region where the process takes place (see Section 9). For ease of<br />
comparison, no matter where the emissions are generated, the same parameters should<br />
be used <strong>for</strong> life cycle impact assessment (see Section 10).<br />
6. Cut-off rules<br />
For <strong>an</strong>y impact category, if the sum of various impacts from a specific<br />
process/activity is less th<strong>an</strong> 1% of the impact equivalent in that category, such a<br />
process/activity may be neglected during the inventory <strong>an</strong>alysis. Nonetheless, the<br />
accumulated impact of neglected process/activity may not exceed 5%. Components<br />
<strong>an</strong>d materials omitted from the LCA shall be documented.<br />
(Note: This judgment <strong>for</strong> this “1% Rule” is based on the environment relev<strong>an</strong>ce<br />
assessment of material input to the system, <strong>an</strong>d does not consider special <strong>an</strong>d<br />
exceptional environmental impacts.)<br />
7
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