Upgrading of control room in Oskarshamn

The second largest utility in Sweden, Sydkraft, initiated a pre-study in 1994 with the aim to develop a control room philosophy as a basis for development and design of upgrading of control rooms for six differ Units. There are five nuclear power reactors and one central interim storage facility for spent nuclear fuel (CLAB) at the site of Oskarshamn Nuclear Power Plant (OKG AB) and Barseback Nuclear Power Plant. CLAB is owned by the Swedish Nuclear Fuel and Waste Management Company, but operated by OKG AB. The units represents a range of different generations of ABB Atom's BWRs. The control rooms of today are mainly conventionally instrumented with process computer systems as a complement for information presentation only. All process control is hardwired and analogue. This paper present a short overview of the control room philosophy, the design basis and the first planning and development steps in the realisation of a control room modernisation for Unit 1 at OKG AB.