Functional Safety of an Electrical and Automation Control System Applied to a Plate Rolling Mill Plant

摘要

Current regulatory standards set strict parameters to satisfy safety requirements in complex plants such as rolling mill ones. SIME S.r.l. is specialized in the electric, automation & process control systems for the iron & steel sector, as well as in delivering safety level aligned with the system complexity through a structured process of risk analysis, design and implementation. This paper describes how the company achieved a Performance Level d according to EN ISO 13849-1, equivalent to Safety Integrity Level 2 of IEC/EN 62061, required at OFFICINE TECNOSIDER S.r.l., a 300.000 t/y plate rolling mill (Italy). SIME S.r.l. adopted adequate electro-mechanical solutions, power electronic devices, field sensors, standard and safety PLC (AllenBradley ControlLogix and GuardLogix) with the related distributed I/O system.