Semcon upgrades measurement system at Forsmark nuclear powerplant

Semcon has received another order from Forsmark nuclear powerplant for a measurement system at reactors 1 and 2. The order is for upgrading the ComTest® measurement system, which is used in monitoring the condition of drive mechanisms, isolation valves and flow valves.


Semcon will be responsible for the hardware, software development, testing, documentation, and staff training.

“The ComTest ® measurement system has been used at Forsmark 1 & 2 since 1992 and we are extremely pleased about the confidence they’ve shown in us again. We’ll upgrade the current measurement system to further increase its performance and reliability, meaning a new computer structure, a new computer operating system and new processors for all the I/O systems,” says Jan Gunulf, department manager at Semcon’s ComTest department in Helsingborg.

The ComTest ® measurement system for condition monitoring
ComTest is an on-line computer-based system used for monitoring the condition of control rod drive mechanisms, reactor containment isolation valves and the many flow valves for turbines. The measurement system is used for detecting early changes in drive mechanisms and valve behaviour by comparing measurements with stored reference curves. It’s a very large system with over 2,000 data points per reactor block, which are all extremely carefully synchronized to be measured simultaneously. The system is also used as a general measurement system with configurable measurement conditions and for special interference measurements.


For more information, please contact:
Jan Gunulf, Department manager ComTest, Semcon Caran AB, +46 (0)707 291056
Anders Atterling, IR manager Semcon AB, +46 (0)704 47 28 19

Semcon is a global company active in the areas of engineering services and product information. The Group has around 2,600 employees with extensive experience from many different industries. Semcon develops products, plants and information solutions along the entire product development chain and also provides many other services including quality control, training and methodology development. Semcon increases customers’ sales and competitive strength by providing them with innovative and solid engineering solutions. The Group has sales of SEK 2.3 billion with activities at more than 40 sites in Sweden, Germany, the UK, Brazil, Hungary, India, China, Spain, Malaysia and Russia. Semcon’s shares are quoted on the Nasdaq OMX  Stockholm under the SEMC ticker.


About Us

Semcon is an international technology company that develops products based on human needs and behaviours. We strengthen our customers’ competitiveness by always starting from the end user, because the person who knows most about the user’s needs creates the best products and the clearest benefits to humans. Semcon collaborates mainly with companies in the automotive, industry, energy and life science sectors. With more than 2000 specialised employees, Semcon has the ability to take care of the entire product development cycle, from strategy and technology development to design and product information. Semcon was founded in Sweden in 1980 and has offices in over 30 locations in eight different countries. In 2016, the Group reported annual sales of SEK 1.8 billion. Read more on


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