This is a typical case, where the client didn't even know he had a problem to begin with. The firefighting system covers the whole production area. The system is always under pressure, so that in an emergency there is enough water to fight a fire. During services where some valves were opened, it could be seen that there was corrosion in the pipes. This leads to the risk, that in the case of fire, the rust particles will clog the spray nozzles of the system and not enough water can flow.

 

One 3" Merus® ring was installed. At the feeding pipe of the fire figthing system, before the regular valve and the pumps. The Trial Target was to remove the existing corrosion and prevent the system from further corrosion, by flushing out the rust.

 

Directly after the installation a sample was taken at a shut off valve as far as possible away from the inlet. This was done slowly, so the water was mainly clear. Some days later a second sample was taken at the same place and under the same condition. This time the water was dark brown. In the sampling bucket, there was a thin layer of rusty particles to be seen. The client wouldn’t believe, how much rust was in the system and how well the Merus^® ring was working in such a short time.