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Val av överlastskydd för elektriska ventilmanöverdon på kärnkraftverket i Forsmark
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2012 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

At nuclear power plants, electrical valve actuators are important for ensuring that the reactor core is water covered and the pressure in the reactor tank and containment is limited. The electrical actuators are provided with overload protection in case of drawing higher current then the motors are rated for. When safety manoeuvres are needed, the overload protection must not trig and cause the valve to stop before completing the manoeuvre. Analyses have showed that the current settings of the overload protection may cause an illegitimate trig at the worst theoretically possible accident. A new method has been developed with conservative assumptions and applies overload protections for all electrical valve actuators at the three reactors in Forsmark.

Place, publisher, year, edition, pages
2012. , 41 p.
Keyword [sv]
kärnkraft, överlastskydd, ventil, manöverdon, motor
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:uu:diva-176740ISRN: ISRN UTH-INGUTB-EX-KKI-2012/03-SEOAI: diva2:536989
Educational program
Bachelor Programme in Nuclear Engineering
Available from: 2012-08-29 Created: 2012-06-25 Last updated: 2012-08-29Bibliographically approved

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Department of Physics and Astronomy
Other Electrical Engineering, Electronic Engineering, Information Engineering

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