University of Twente Student Theses


Instandhoudinsprogramma Walrusklasse

Herbrink, J.M. (2014) Instandhoudinsprogramma Walrusklasse.

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Abstract:This is a public summary of my internship at Tegema Twente in Enschede, the Netherlands, which is part of the Tegema Group. The internship was spread over the period from the 10th of June 2013 until the 1st of November 2013. The subject was the ‘Life Extension Program (LEP)’ for the Walrus class submarines of the Royal Dutch Navy. At Tegema the mechanical and ship-building part of this project was carried out. The work done and the lessons learned were described in an internship report. This report is strictly confidential for a period of 30 years starting in 2013. The company supervisor was ing. M.P.R. Groothedde, but I also learned a lot from ir. K. van Kooij and other colleagues at Tegema. The supervisor from the University of Twente was dr. ir. W.W. Wits. He is associated with the chair Design Engineering, part of the research group Design, Production and Management. This is also the specialization of my Mechanical Engineering master, of which this internship composes a 15EC part. The assignment comprised the aspects listed below, which covered most of the project:  Project management  Document control  Work preparation  Logistics  Work execution  Project guidance  Communication Project management was crucial to define the responsibilities between the different companies in the project, and so a project contract was set up to control this. It was combined with a planning so as to relate the execution of the companies’ own work to timely receiving the inputs needed from other entities. The most crucial of these inputs was the large set of technical documentation describing the modifications on the submarine. New documents and revisions of old ones were still coming in when the project was already in the execution phase. Organizing them was an important task, as most of the work preparation that had been done was based on these documents. New documents required an update of work preparation results, like the quality control matrices. Other companies also had to be provided with new documents. This was done with transmittals, essential to keep track of what was send and in which revisions. In the work preparation phase, lack of clarity from a drawing or permission to change it, was asked for with a Technical Query Report. This resulted in a structured way of asking questions to the issuers. It was important that the status of the TQR’s was tracked and that follow-up was given to the answers received. This could for instance lead to an in-company alteration of a drawing, called a Red-White procedure. The resulting drawing is a new revision that had to be organized and distributed again. An important lesson learned was that any change to be made to a document that was already sent to other entities, must always be preceded by a revision increase. In the execution phase the impact of working in close confinement was apparent. Appropriate safety measures were taken to prevent accidents, like the constant supply of fresh air. A good planning was crucial to ensure the timely execution of the work, with multiple teams working side by side. Also because of demanding logistics, the project guidance was an important element in this project. A large part of it boils down to good communication. During the project, different meetings were held to divide tasks and responsibilities within the team. As the project moved along, increasingly better processes were established to keep track of tasks and issues.
Item Type:Internship Report (Master)
Tegema Twente, the Netherlands
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Keywords:Tegema, submarine, project, management, documentation, communication
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