{"data":{"id":228077,"slug":"examensarbete-sakerhetsanalys-inom-karnkraft-2","type":"job","title":"Thesis Work - Security Analysis in Nuclear Power","description":"Company Description\n\nVattenfall is a leading European energy company with 12 million customers and approximately 21,000 employees. We are convinced that there is a path to building a future where everyone can choose fossil-free ways to transport, produce, and live.\n\n\nAbout the Role\n\nAre you a student who wants to use your knowledge to contribute to real solutions within the energy transition? With us, you have the opportunity to complete your thesis work close to operations, working alongside experienced specialists on challenges where your ideas and perspectives can make a difference.\nThis thesis work is conducted within Vattenfall Nuclear Fuel, where you will perform a Security Analysis in nuclear power - Analysis of the falling control rod event from a different perspective.\nVattenfall Nuclear Fuel is part of Vattenfall Power Solutions and is responsible for ensuring nuclear fuel supply and fuel management services to our nuclear power plants, with a focus on safety and sustainability. This thesis work is conducted within the Safety Analysis unit.\nIn this thesis work, you will perform a safety analysis of the reactivity event falling control rod, but in reverse. When analyzing rapid reactivity events, methodologies are currently used with the aim of preventing cladding damage. These methodologies are robust and conservative, which is preferable, as this provides large safety margins against radiological releases. However, it is of interest to determine the magnitude of the safety margins, and this thesis work aims to quantify this if possible. This is done by developing a simplified chain from regulatory release limits and isotope inventory to the number of allowable cladding failures, with further work to determine the maximum enthalpy distribution in the core under typical maximum scenarios and a resulting enthalpy limit for falling control rod. You will work with, among other things, transient modeling using 3D code.\nThe purpose is to investigate the impact of the conservatisms applied in the common methodology when analyzing the falling control rod event.\nThis assignment is for 1 student.\n\n\nRequirements Specification\n\nWe are looking for a student who is about to complete their academic studies and who wants to put their knowledge into practice through a thesis at Vattenfall. You are also someone who identifies with our principles: Active, Open, Positive, and Safety.\nWe see that you are a self-directed and thorough person with strong analytical skills who has a genuine interest in technical modeling and is curious about nuclear power safety. You have experience working with complex data sets and simulations and also possess the ability to effectively document and present your technical results. Above all, you are interested in contributing to Vattenfall's goal of fossil-free and safe nuclear power.\nEducation - You are studying technical physics, energy systems, or another relevant technical field, with basic knowledge in thermodynamics, fluid mechanics, and neutron physics.\nLanguage requirements: Swedish and English\n\nScope \u2013 30 hp\n\n\nAdditional Information\n\nThe assignment starts 2027-01-15 or by agreement\nWork location: Uppsala or Solna\nApplication: attach a file containing your CV and a copy of your grades. Please note that you can only attach one file in the application, so it is important that the information is compiled in a single file.\nApplication deadline: 2026-10-18\nContact person and supervisor at Vattenfall is Evelina Pers\u00e4ter, evelina.persaeter@vattenfall.com, 0732708110\n\nDiversity and Inclusion \u2013 in everything we do\nAt Vattenfall, we value being active, positive, open, and safety-conscious. We seek employees who share our vision and can help strengthen our corporate culture. We are convinced that diversity contributes to building a more profitable and attractive company and strive to be good role models regarding diversity. Vattenfall actively works to ensure that all employees have the same opportunities and rights regardless of age, ethnic or cultural background, gender identity, religion\/belief, sexual orientation, or functional variation. Read more about how we work with diversity and inclusion here.\nVattenfall is part of Sweden's critical infrastructure and our operations are governed by, among other things, rules on security protection, nuclear non-proliferation, and export control. Because of these rules, candidate screening is conducted for many of the positions in our operations before employment. For positions that lead to participation in security-sensitive activities or placement in a security class, this screening means that security clearance is conducted in accordance with the security protection legislation.","language":"sv","is_translated":true,"title_original":"Examensarbete - S\u00e4kerhetsanalys inom K\u00e4rnkraft","description_original":"F\u00f6retagsbeskrivning\n\n\nVattenfall \u00e4r ett ledande europeiskt energif\u00f6retag med 12 miljoner kunder och cirka 21 000 anst\u00e4llda. Vi \u00e4r \u00f6vertygade om att det finns en v\u00e4g att bygga en framtid d\u00e4r alla kan v\u00e4lja fossilfria s\u00e4tt att transportera, producera och leva. \n\n\n\n\nOm rollen\n\n\n\u00c4r du student och vill anv\u00e4nda dina kunskaper f\u00f6r att bidra till verkliga l\u00f6sningar inom energiomst\u00e4llningen? Hos oss f\u00e5r du m\u00f6jlighet att genomf\u00f6ra ditt examensarbete n\u00e4ra verksamheten, tillsammans med erfarna specialister och med utmaningar d\u00e4r dina id\u00e9er och perspektiv kan g\u00f6ra skillnad. \nDet h\u00e4r examensarbetet utf\u00f6rs inom Vattenfall Nuclear Fuel d\u00e4r du kommer f\u00e5 g\u00f6ra en S\u00e4kerhetsanalys inom k\u00e4rnkraft - Analys av h\u00e4ndelsen fallande styrstav fr\u00e5n ett annat perspektiv.\nVattenfall Nuclear Fuel \u00e4r en del av Vattenfall Power Solutions och ansvarar f\u00f6r att s\u00e4kerst\u00e4lla k\u00e4rnbr\u00e4nslef\u00f6rs\u00f6rjning och br\u00e4nslehanteringstj\u00e4nster till v\u00e5ra k\u00e4rnkraftverk, med fokus p\u00e5 s\u00e4kerhet och h\u00e5llbarhet. Detta examensarbete utf\u00f6rs inom enheten S\u00e4kerhetsanalys.\nI detta examensarbete kommer du att utf\u00f6ra en s\u00e4kerhetsanalys av reaktivitetsh\u00e4ndelsen fallande styrstav, fast bakl\u00e4nges. Vid analys av snabba reaktivitetsh\u00e4ndelser anv\u00e4nds idag metodiker med syftet att undvika kapslingsskada. Dessa metodiker \u00e4r robusta och konservativa, vilket \u00e4r att f\u00f6redra, d\u00e5 detta ger stora s\u00e4kerhetsmarginaler mot radiologiska utsl\u00e4pp. Det \u00e4r dock av intresse att ta reda p\u00e5 storleksordningen p\u00e5 s\u00e4kerhetsmarginalerna, och detta examensarbete syftar till att om m\u00f6jligt kvantifiera detta. Detta genom att ta fram en f\u00f6renklad kedja fr\u00e5n regulatorisk utsl\u00e4ppsgr\u00e4ns och isotopinventarium till antal till\u00e5tna kapslingsbrott, med vidare arbete f\u00f6r att best\u00e4mma maxentalpidistributionen i h\u00e4rden vid typiska maxscenario och en d\u00e4rifr\u00e5n h\u00e4rledd entalpigr\u00e4ns f\u00f6r fallande styrstav. Du kommer bland annat att arbeta med transientmodellering med hj\u00e4lp av 3D-kod.\nSyftet \u00e4r att unders\u00f6ka inverkan av de i den vanliga metodiken applicerade konservatismerna vid analys av h\u00e4ndelsen fallande styrstav.\nDetta uppdrag \u00e4r f\u00f6r 1 student.\n\n\n\n\nKravspecifikation\n\n\nVi s\u00f6ker en student som snart avslutar sina akademiska studier och som vill oms\u00e4tta sina kunskaper i praktiken genom ett examenarbete hos Vattenfall. Du \u00e4r \u00e4ven n\u00e5gon som identifierar sig med v\u00e5ra principer: Aktiv, \u00d6ppen, Positiv och S\u00e4kerhet.\nVi ser att du \u00e4r en sj\u00e4lvg\u00e5ende och noggrann person med starka analytiska f\u00e4rdigheter som har ett genuint intresse f\u00f6r teknisk modellering och \u00e4r nyfiken p\u00e5 k\u00e4rnkraftss\u00e4kerhet. Du har erfarenhet av att arbeta med komplexa datam\u00e4ngder och simuleringar och besitter \u00e4ven f\u00f6rm\u00e5gan att effektivt dokumentera och presentera dina tekniska resultat. Framf\u00f6rallt \u00e4r du intresserad av att bidra till Vattenfalls m\u00e5l om fossilfrihet och s\u00e4ker k\u00e4rnkraft.\nUtbildning - Du studerar teknisk fysik, energisystem eller annat relevant tekniskt omr\u00e5de, med grundl\u00e4ggande kunskaper inom termodynamik, fluidmekanik och neutronfysik.\nSpr\u00e5kkrav: Svenska och engelska\n\nOmfattning \u2013 30 hp\n\n\n\n\nYtterligare information\n\n\nUppdraget startar 2027-01-15 eller enligt \u00f6verenskommelse\nPlaceringsort: Uppsala eller Solna\nAns\u00f6kan: bifoga en\u202ffil som inneh\u00e5ller ditt CV och\u202fen kopia av dina\u202fbetyg. Observera att man endast kan bifoga en fil i ans\u00f6kan, d\u00e4rmed \u00e4r det viktigt att informationen \u00e4r samlad i en och samma fil.  \nSista ans\u00f6kningsdag: 2026-10-18\nKontaktperson och handledare p\u00e5 Vattenfall \u00e4r Evelina Pers\u00e4ter, evelina.persaeter@vattenfall.com, 0732708110\n\nM\u00e5ngfald och inkludering \u2013 i allt vi g\u00f6r\nP\u00e5 Vattenfall v\u00e4rdes\u00e4tter vi att vara aktiva, positiva, \u00f6ppna och s\u00e4kerhetsmedvetna. Vi s\u00f6ker medarbetare som delar v\u00e5r vision och kan bidra till att st\u00e4rka v\u00e5r f\u00f6retagskultur. Vi \u00e4r \u00f6vertygade om att m\u00e5ngfald bidrar till att bygga ett mer l\u00f6nsamt och tilltalande f\u00f6retag och str\u00e4var efter att vara goda f\u00f6rebilder n\u00e4r det g\u00e4ller m\u00e5ngfald. Vattenfall arbetar aktivt f\u00f6r att alla medarbetare ska ha samma m\u00f6jligheter och r\u00e4ttigheter oavsett \u00e5lder, etnisk eller kulturell bakgrund, k\u00f6nstillh\u00f6righet, religion\/tro, sexuell l\u00e4ggning eller funktionsvariation. L\u00e4s mer om hur vi arbetar med m\u00e5ngfald och inkludering h\u00e4r.     \nVattenfall \u00e4r en del av Sveriges kritiska infrastruktur och v\u00e5r verksamhet omfattas bland annat av regler om s\u00e4kerhetsskydd, nukle\u00e4r icke-spridning och exportkontroll. P\u00e5 grund av dessa regler genomf\u00f6rs en kontroll av kandidaten f\u00f6r m\u00e5nga av tj\u00e4nsterna i v\u00e5r verksamhet innan anst\u00e4llning sker. F\u00f6r de tj\u00e4nster som leder till deltagande i s\u00e4kerhetsk\u00e4nslig verksamhet eller placering i s\u00e4kerhetsklass inneb\u00e4r denna kontroll att s\u00e4kerhetspr\u00f6vning genomf\u00f6rs i enlighet med s\u00e4kerhetsskyddslagen.","available_locales":["en"],"price":null,"currency":"SEK","status":"active","noindex":true,"location":{"address":null,"full_address":null,"city":"Uppsala","country":"SE","latitude":59.84693346164,"longitude":17.674401281138},"metadata":{"region":"Uppsala l\u00e4n","duration":"Tills vidare","employer":"Vattenfall AB","postcode":"75323","positions":1,"profession":"S\u00e4kerhetshandl\u00e4ggare","salary_type":"Fast m\u00e5nads- vecko- eller timl\u00f6n","scope_of_work":"100\u2013100 %","working_hours":"Heltid","employment_type":"full_time","occupation_field":"S\u00e4kerhet och bevakning","employer_workplace":"Uppsala - Vattenfall","experience_required":true,"employment_type_label":"Tillsvidareanst\u00e4llning (inkl. eventuell provanst\u00e4llning)"},"user_id":null,"is_sponsored":false,"views_count":0,"ai_views_count":4,"bot_views_count":0,"ai_vendor_counts":{"openai":2,"anthropic":2},"visibility":"public","submission_source":null,"submission_ai_name":null,"has_owner_email":true,"can_contact_owner":true,"phone":"0732708110","owner_email":"evelina.persaeter@vattenfall.com","images":[],"published_at":"2026-09-23T13:09:10+00:00","expires_at":"2026-10-18T23:59:59+00:00","created_at":"2026-09-24T03:52:23+00:00","updated_at":"2026-09-27T03:19:30+00:00"}}