Butt-welding is a method used when two PE wires are joined into a long chain of pipes that can then be used for a water pipeline. The method of butt-welding is a relatively new method and it started to become more common in the early1990s. Since then, the material PE has become the dominant material for water pipes, which has led to a bigger demand of butt-welding. Hence, the focus of this work is to contribute to a standardization of the whole process of butt-welding. The process extent from when the pipes come delivered to the pipes being fully welded. The reason why the whole process is considered in this work is that there are already predetermined parameters for the actual butt-welding. The parameters are for the finished weld joint to be considered correct and professional. The surrounding process is neither described nor standardized as it stands at present. Why the process of butt-welding is interesting and topical to study is because about 700 km of pipes are laid each year for an amount of SEK 2.8 billion, in Sweden alone. Thus, there is a benefit to standardizing and improving the process of butt-welding. The aim will be to study the possibilities for improvement with the butt-welding process The conclusions from this study are that, among other things, the butt-welding containers need to be improved, which can be achieved with the help of the tool 5S from the philosophy lean. Another improvement is to always use an WDP plan over the mute welding area to facilitate establishments and during the work. In addition, to succeed in standardization, there is a need for committed leadership in terms of encouraging the use of the standard and using the skills and experience available. By standardizing the butt-welding process from start to finish can both save time and money. This paper has separated itself from dimensions less than 200 mm and larger than 315 mm. Even though there are still many similarities in the process with smaller and larger pipes. The conclusions drawn in this work should therefore be generalized to be valid for all types of PE pipelines.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:umu-172799 |
| Date | January 2020 |
| Creators | Näslund, Arvid |
| Publisher | Umeå universitet, Institutionen för tillämpad fysik och elektronik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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