WorldFIP is a deterministic rad-tol fieldbus used at CERN's LHC for a variety of control systems. Cryogenics, Power Converters, Beam Instrumentation and other critical systems are using WorldFIP for the exchange of data between their sensors and actuators and the control and supervision level. With Alstom phasing out WorldFIP support in 2009, it was decided to insource this technology at CERN.