Since General Railway Signal (now ALSTOM) advised the industry of a potential unsafe failure of type B vital relays in 1995, railways worldwide have faced the challenge of managing this problem and the risk that it presents them. There are millions of affect relays in service worldwide.
For nearly 2 decades, RDG has been implementing a proprietary, effective, and permanent solution to this problem without replacing the relays with new.
It involves complete disassembly of the relay and replacement of the critical parts with Nickel plated parts. All harmful Cadmium-Tin plated parts are removed from the relay.
This process has been thoroughly tested and vetted by several class 1 railroads, transits and independent laboratories.
Nearly 50,000 RDG relays are in service worldwide. RDG has saved its customers millions of dollars with this approach and has greatly improved the safe operations of people and freight traffic.