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En miljöjämförelse av traditionellt stambyte kontra relining av tappvattenrör: Med hjälp av livscykelanalys
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
2012 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This study was a final thesis, for the bachelor program in civil engineering at the

University of Uppsala, which was made on behalf of Riksbyggen in Uppsala. A

comparative study of two stain renovation methods; tradition pipe replacement and

relining was done with an environmental perspective. A simplified life cycle

assessment (LCA) was done according to the International Organization of

Standardization (ISO) with the LCA tool Eco-indicator 99, in order to be estimate the

impact on the environment. LCA is a method that follows a product or a system

“from the cradle to the grave”, which means that all the environmental impact over a

lifetime is considered.

The work was executed by using a stairway with nine apartments in a house called

“Uppsala Hus 9” as a reference object, which was provided by Riksbyggen. The

house was a typical house from the so-called “Miljonprogram” and was restored

with traditionally pipe replacem

ent four years earlier. Interviews were done with the companies VBE

Byggproduktion AB and Novada that works with traditionally pipe replacement and

relining, in order to receive information about material consumption, equipment,

transports etcetera for both methods. Where some information was impossible to

obtain, assumptions were made.

The processes considered within the study were extraction and production of

materials, energy use of machines, transports, recycling and waste. The

environmental categories that the study estimated were taken from Eco-indicator 99

and the categories were “human health”, “ecosystem quality” and “resources”.

The conclusion of the study was that the traditionally pipe replacement had a greater

impact on the environment than the relining. This was mainly due to the fact that the

production of material with the traditionally pipe replacement was about 950 times

larger than with the relining. The transport with the traditionally pipe replacement

was about three times bigger than the transport with relining. The result of the


recycling was larger with the traditionally pipe replacement than with the relining

which had none recycling at all. The energy use of machines was slightly bigger with

relining than with traditionally pipe replacement.

Some of the data was unreliable, which required us to make some assumptions. This

resulted in some of the values being too high or too low. An example could have

been that the use of machines for both of the methods was too high. Meanwhile, it

should not affect the result too much, due to the fact that the use of machines for

both methods almost cancelled each other out.

Place, publisher, year, edition, pages
2012. , 66 p.
Keyword [sv]
LCA, traditionellt stambyte, relining
National Category
Civil Engineering
URN: urn:nbn:se:uu:diva-188152ISRN: ISRN UTH-INGUTBEX-B-2012/13-SEOAI: diva2:576414
Educational program
Bachelor Programme in Construction Engineering
Available from: 2012-12-13 Created: 2012-12-12 Last updated: 2013-02-19Bibliographically approved

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