Environmental product declaration of timber products: The impact of allocation method to the impact categories

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Environmental product declaration of timber products : The impact of allocation method to the impact categories. / Lauri, Linkosalmi; Roope, Husgafvel; Atsushi, Takano; Tuovi, Valtonen; Olli, Dahl.

In: Journal of Cleaner Production, Vol. 256, 120386, 20.05.2020.

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@article{bb848e7a788946f08573170f6f091942,
title = "Environmental product declaration of timber products: The impact of allocation method to the impact categories",
abstract = "Nowadays, several novel standards guide the environmental assessment work in the field of construction products. In this study, allocation methods presented in EN 15804 standard are demonstrated in a comparable manner for sawmilling products. Cradle to gate assessment was done for three European sawmills, where different allocation methods were used in manufacturing phase. Firstly, were used physical allocation (volume based) and economic allocation (value based). Secondly, manufacturing process steps were divided (subdivision) and physical and economic allocation were used for these. In the third option, used as a reference, all environmental impacts of the manufacturing stage were allocated to the main product. This study focuses on indicators for describing environmental impacts and use of primary energy. Results indicate that allocation influences how impacts are distributed to the sawmilling products. As supposed, sawn timber as main product is getting biggest impact in all cases, because of the biggest quantity in production. Physical allocation is looking volumetric distribution of the products, where economic allocation is also considering value of the products. Additional, subdivision will give more holistic approach based on different production steps together with physical or economic quantities. Based on the results, the subdivision with economic allocation or the economic allocation gives more realistic impacts to low value by-products. Subdivision with economic allocation is the most holistic option, because impacts are allocated by processes, volumes and values. Despite of all standardization work, many different assessment methods can and are still used for the environmental assessment of the building products. That has led to a situation where different datasets are not comparable with each other and this causes confusion in users of the environmental datasets. Therefore, transparent datasets are needed to avoid misunderstandings and the reporting system could be developed to be more uniform.",
keywords = "Allocation, Environmental product declaration, Life cycle assessment, Sawmilling, Wood-based products",
author = "Linkosalmi Lauri and Husgafvel Roope and Takano Atsushi and Valtonen Tuovi and Dahl Olli",
year = "2020",
month = "5",
day = "20",
doi = "10.1016/j.jclepro.2020.120386",
language = "English",
volume = "256",
journal = "Journal of Cleaner Production",
issn = "0959-6526",

}

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TY - JOUR

T1 - Environmental product declaration of timber products

T2 - The impact of allocation method to the impact categories

AU - Lauri, Linkosalmi

AU - Roope, Husgafvel

AU - Atsushi, Takano

AU - Tuovi, Valtonen

AU - Olli, Dahl

PY - 2020/5/20

Y1 - 2020/5/20

N2 - Nowadays, several novel standards guide the environmental assessment work in the field of construction products. In this study, allocation methods presented in EN 15804 standard are demonstrated in a comparable manner for sawmilling products. Cradle to gate assessment was done for three European sawmills, where different allocation methods were used in manufacturing phase. Firstly, were used physical allocation (volume based) and economic allocation (value based). Secondly, manufacturing process steps were divided (subdivision) and physical and economic allocation were used for these. In the third option, used as a reference, all environmental impacts of the manufacturing stage were allocated to the main product. This study focuses on indicators for describing environmental impacts and use of primary energy. Results indicate that allocation influences how impacts are distributed to the sawmilling products. As supposed, sawn timber as main product is getting biggest impact in all cases, because of the biggest quantity in production. Physical allocation is looking volumetric distribution of the products, where economic allocation is also considering value of the products. Additional, subdivision will give more holistic approach based on different production steps together with physical or economic quantities. Based on the results, the subdivision with economic allocation or the economic allocation gives more realistic impacts to low value by-products. Subdivision with economic allocation is the most holistic option, because impacts are allocated by processes, volumes and values. Despite of all standardization work, many different assessment methods can and are still used for the environmental assessment of the building products. That has led to a situation where different datasets are not comparable with each other and this causes confusion in users of the environmental datasets. Therefore, transparent datasets are needed to avoid misunderstandings and the reporting system could be developed to be more uniform.

AB - Nowadays, several novel standards guide the environmental assessment work in the field of construction products. In this study, allocation methods presented in EN 15804 standard are demonstrated in a comparable manner for sawmilling products. Cradle to gate assessment was done for three European sawmills, where different allocation methods were used in manufacturing phase. Firstly, were used physical allocation (volume based) and economic allocation (value based). Secondly, manufacturing process steps were divided (subdivision) and physical and economic allocation were used for these. In the third option, used as a reference, all environmental impacts of the manufacturing stage were allocated to the main product. This study focuses on indicators for describing environmental impacts and use of primary energy. Results indicate that allocation influences how impacts are distributed to the sawmilling products. As supposed, sawn timber as main product is getting biggest impact in all cases, because of the biggest quantity in production. Physical allocation is looking volumetric distribution of the products, where economic allocation is also considering value of the products. Additional, subdivision will give more holistic approach based on different production steps together with physical or economic quantities. Based on the results, the subdivision with economic allocation or the economic allocation gives more realistic impacts to low value by-products. Subdivision with economic allocation is the most holistic option, because impacts are allocated by processes, volumes and values. Despite of all standardization work, many different assessment methods can and are still used for the environmental assessment of the building products. That has led to a situation where different datasets are not comparable with each other and this causes confusion in users of the environmental datasets. Therefore, transparent datasets are needed to avoid misunderstandings and the reporting system could be developed to be more uniform.

KW - Allocation

KW - Environmental product declaration

KW - Life cycle assessment

KW - Sawmilling

KW - Wood-based products

UR - http://www.scopus.com/inward/record.url?scp=85079342284&partnerID=8YFLogxK

U2 - 10.1016/j.jclepro.2020.120386

DO - 10.1016/j.jclepro.2020.120386

M3 - Article

AN - SCOPUS:85079342284

VL - 256

JO - Journal of Cleaner Production

JF - Journal of Cleaner Production

SN - 0959-6526

M1 - 120386

ER -

ID: 41302994