Yokogawa Electric Corporation (Newnan, GA) announces that it has released an enhanced version of the ProSafe-RS safety instrumented system (SIS). This new version, R4.01, features an exciting expansion of Yokogawa’s lineup of I/O devices and introduces crucial new SIS components. In addition, the FieldMate Validator software has been enhanced to work with this latest version of ProSafe-RS. In the oil, natural gas, petrochemical, iron & steel, and other energy and basic materials industries, accident prevention and protection of the environment are paramount concerns in plant operations. Accordingly, there is a growing demand for SISs that can detect abnormal conditions and safely initiate emergency shutdowns. With R4.01, plant operators can also be assured of an optimum engineering environment that spans the entire plant lifecycle, from plant design and the engineering and installation of systems and devices to the start-up of production, maintenance, and renovation.