Denna rapport är resultatet av ett examensarbete som utfördes på Forsmarks kärnkraftverk åt FTQ-avdelningen. FTQ-avdelning på Forsmark ansvarar för erfarenhetsåterföringens ärenden på anläggningen och försörjer organisationen med nya infallsvinklar gällande erfarenhetsåterföringstekniken. För cirka 10 år kom Forsmarks kraftgrupp AB till insikt att det fanns ett behov av att införa en aktiv erfarenhetsåterföringsprocess för att undvika upprepade misstag. Detta resulterade i att en ny avdelning skapades år 2008 med namnet FTQ. Denna avdelning skapade en databas med namnet ERFKA där man började samla in och lagra erfarenhetsåterföringsärenden. Dessutom innehåller ERFKA ett presentationsverktyg som möjliggör för personalen på FTQ-avdelningen att få fram grafisk statistik på allt som finns i databasen, som t.ex. statistik på tillbud, olyckor, månadsrapporter, rapporter mm. ERFKA-systemet uppfyller sitt syfte i detta sammanhang, men är på grund av sekretesskäl endast tillgänglig för ett tiotal personer. Det resulterar i att FTQ-avdelningen kontaktas för att ta fram informationen åt andra på anläggningen vilket både är tidskrävande och krångligt i en stor organisation som Forsmark. Examensjobbet mål var att skapa öppenhet i ERFKA-systemet. Genom att använda befintliga IT- verktyg utöver ERFKA ska informationen i ERFKA göras tillgänglig för alla på Forsmark. Examensarbetet består av två delar. Den ena består av framtagning och bearbetning av information från användare av ERFKA och den andra av framtagande av lösningförslag. I första delen utfördes intervjuer för att kartlägga vilken information som ska göras tillgänglig för personalen. Intervjuer hölls med de personer som var mest insatta i erfarenhetsåterföringsförbättringen och därmed var projektets främsta intressenter. I den andra delen togs det fram en kopplingsmodell för att presentera informationen från ERFKA på Forsmarks interna webbplats "Canalen". På grund av begränsad åtkomst till ERFKA för samtaliga anställda blev lösningen att flytta informationen från ERFKA till ett redan beprövat grafritandestatistikprogram med namnet Bi-Cycle. Detta program är tillgänglig för alla i organisationen, enligt bestämda specifikationer. Under projektets gång skapades ett schema på en möjlig kopplingsmodell där alla steg i kommunikationen visas tydligt. Modellen inkluderar allt från Canalen och grafer i Bi-Cycle till den slutgiltiga rapporten och några möjliga kopplingsmodeller mellan ERFKA och Bi-Cycle / This project is a thesis work conducted at the Forsmark nuclear power plant at the FTQ department. The FTQ department at Forsmark is responsible for the experience feedback cases in the facility and supplying the organization with new insights regarding experience feedback techniques. About 10 years ago Forsmark Power Group Ltd realized the need to introduce an active experience feedback process to avoid repeating mistakes. This resulted in a creation of a new department in 2008 with the name of FTQ. Later, the FTQ department created a system with a database named ERFKA where all experience feedback cases have been collected and stored. In addition to the ERFKA database, the system contains a presentation tool that enables data in the database to be presented graphically at the FTQ department, such as statistics on incidents, accidents, monthly reports, reports and more. The ERFKA-system fulfills its purpose in this context but for safety reasons it is only available for approximately 15 people. It results in that FTQ department always needs to be contacted to develop information to others in the facility which is time-consuming and complicated in a big organization like Forsmark. The thesis project was focused in creating openness in the ERFKA-system with regard to safety aspects in the facility. By simply making the information in ERFKA available for everyone at Forsmark, without having to contact the FTQ department, and simultaneously use the tools that already are available on the power plant was this project carried out. The first part was accomplished by interviews in an attempt to specify the information types that were desired to be available. In pursuit of this information, we interviewed those people who were most familiar with the experience feedback improvement and could have most influence on the results. The second part was carried out through developing an acceptable proposed solution for a connection model to present information on the Forsmark intranet “Canalen” using those available tools. Due to the security limits in the facility, just few administrators can access the ERFKA. Therefore, the solution has been formed to transfer information from ERFKA to an already proven statistics and graph generating program called Bi-Cycle, which is available for all employees in the organization. During the project, a diagram of a possible link model has been created where all parts of the communication are clearly displayed. The model includes every detailed section beginning with Canalen, graphs in Bi-Cycle and ending with the final report.

This thesis has been a part of Forsmarks Kraftgrupp AB's evaluation of a turbulence model used in simulation of turbulent flow called PRNS (Partially Resolved Numerical Simulation). This model has promising properties and may be of use in saving computational resources. The purpose of this thesis was to analyze this model and compare it with industrially applied models such as k-omega SST and LES (Large Eddy Simulations). PRNS works as a hybrid of the k-omega SST and DNS (Direct Numerical Simulation) where a constant, RCP (Resolution Control Parameter) with a value between 0 and 1 are selected. This constant is then used in the calculations and determines the behavior of the simulation. When RCP is set to zero the equation are the same as for a DNS simulation and when RCP is set to one the equations for k-omega SST is solved. In this report four different PRNS models have been used, three where RCP was given a constant value (0.1, 0.4 and 0.6). In the fourth model RCP is calculated from the flow field variables The models have been compared to an experiment from 2008 and simulations have been made to resemble the experiment. In the experiment a Particle Image Velocimeter (PIV) was used as method of measurement. From the experimental report data such as velocity (U), turbulent kinetic energy (k) and standard deviation (URMS) have been obtained and have formed the basis for comparison. The models have been simulated in two different software programs: OpenFOAM and Fluent. The data have thereafter been post processed in the software programs MatLab and ParaView, to be compared with experimental data. The results of the simulations have shown that PRNS models generally show a good accordance with experimental data. In particular, PRNS models with constant RCP have shown good results, however, there are some discrepancies. The PRNS model with varying RCP has in most cases showed the largest deviation from experimental data but also a deviation from the other models, including the reference models. Due to the design of the mesh (coarse) further evaluation of the PRNS models will be needed. First, simulate with a finer mesh, but also more complex geometries should be simulated in order to sort out PRNS strengths and weaknesses and thus determine if the model can be used in the daily work at Forsmarks Kraftgrupp AB.

This thesis has been done in order to ease the process of drawing schematics of electrical wiring. The need arose after demand from the government due to a series of incidents that took place during the revision of the nuclear power plant in year 2009. The task of the project has been to create a computer program that can generate a graphical representation of the electrical components relations. The basis for the program has been an example of how the client wants the graphical representation to look. During the course of the project weekly meetings have occured in which the client has reviewed the work. The result of the project is a program written in Visual Basic Applications that can be run in Microsoft Excel. The program is capable of generating graphics for a majority of the cases. Since the program is written in Visual Basic Applications it is possible to run it on almost any computer that has the Microsoft Office suite installed. The program is straight forward, has a built in user manual and a step-by-step guide in order to make it easy to use.