Magnetic filter reduces power station maintenance
A stainless-steel Magnom module has improved system reliability in a Westinghouse managed nuclear power station in the Czech Republic.
A stainless-steel Magnom module has improved system reliability in a Westinghouse managed nuclear power station in the Czech Republic.
The unit was introduced to reduce the failure of various mechanical devices such as valves in the steam line.
The Magnom has been installed in the steam generator blow down sample line on steam generator number 4 at Temelin Nuclear Power Plant.
The parameters of the water flow in this line are: flow from 12 to 20 litre/min; flow temperature of about 100C; and flow pressure from 6.4 to 6.8MPa.
To date the Magnom has removed a large quantity of debris from the system.
Prior to the installation of the Magnom this debris would have continued to circulate (much of it less than 1um) through the conventional filtration.
This hard and sharp particulate would have been responsible for a chain reaction of wear that would cause erosive wear on all valves and static parts of the system.
The engineer manager of this section of the plant believes that the Magnom has substantially improved the operation of the specified sample line.
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