dc.contributor.author | Moldesæther, Ole Vegar | |
dc.date.accessioned | 2011-10-25T09:24:33Z | |
dc.date.available | 2011-10-25T09:24:33Z | |
dc.date.issued | 2011 | |
dc.identifier.uri | http://hdl.handle.net/11250/182843 | |
dc.description | Master's thesis in Structural engineering | en_US |
dc.description.abstract | Modifications in the process industry are quite common. For many of these modifications cutting of
existing equipment and structure will be a central activity. The abrasive diamond wire cutting
technology is adopted from the stone cutting industry, and has proven to cut cross-sections of steel
quite efficient. However, as for any machining process, there will be heat generated from friction and
a spark emission.
Since most of the process plants are regarded as a hazardous zone, in terms of potentially explosive
atmospheres, there will always be a risk increase when performing work which produces potential
ignition sources. The ATEX Directive was founded for allowing free trade of explosion proof
equipment within the European Union. Thus the requirements found within the ATEX Directive are
established to reduce the risk of ignition for the relevant equipment which fulfills the requirements
stated therein.
In this thesis the theory of diamond wire is established by adopting central elements from
conventional abrasive technology. This theory is then used as a basis for a thermal model, usable for
numerical simulations. The model is partially validated against measured temperatures. However,
when adding coolants the model would over-estimate the temperatures.
The results obtained showed that diamond wire cutting most likely would be safe, in terms of hot
surfaces, if adequate cooling is applied. When regarding sparks no conclusions could be obtained of
either ignition potential or temperature. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | University of Stavanger, Norway | en_US |
dc.relation.ispartofseries | Masteroppgave/UIS-TN-IKM/2011; | |
dc.subject | offshore teknologi | en_US |
dc.subject | konstruksjonsteknikk | en_US |
dc.subject | hot surfaces | en_US |
dc.subject | ignition of explosive atmospheres | en_US |
dc.subject | diamond wire cutting | en_US |
dc.subject | materialteknologi | en_US |
dc.subject | byggkonstruksjoner | en_US |
dc.title | Utilization of synthetic diamonds for cutting purposes in explosive atmospheres | en_US |
dc.type | Master thesis | en_US |
dc.subject.nsi | VDP::Technology: 500::Materials science and engineering: 520 | en_US |