• Emergency

    FUNCTIONAL SAFETY ANALYSIS

    The safety design of machines and plants is assuming increasing importance in all industrial sectors, and, within this process, Functional Safety is a key element, both in terms of product certification (see link), as always included in gobble technical regulations, as for industrial safety reasons.
    Compliance with reliability and “quality” parameters of safety functions, such as “Performance Level (PL)” and “Safety Integrity Level (SIL)“, has become a central element in the safety design of every industrial context: these parameters are becoming more and more subject to evaluation-comparison between manufacturing companies and user companies, who will then have the task of maintaining over time the safety level achieved in the design phase of the product Safety Life Cycle.
    In general, NEMOTEC helps its client companies in the management of the entire functional safety process.
    This process starts from the definition phase of the safety functions, identified in the machinery risks analysis (see link), to be implemented in the design stage, then passes to the definition of functional schemes to be implemented in the design phase (Functional Block Diagram, FBD, and Reliability Block Diagram, RBD), to the evaluation of the required functional safety parameters and their reliability level (SIL / PL required), and finally verifies the proper design through the evaluation of the analyzed reliability parameters (SIL / PL verification), including the drafting of the relevant sections of the manuals (Manuals for Safety Loops etc.).

    performance level

    sicurezza funzionale

    Process safety industry
    APPLICATION FIELD

    • Safety of machinery – ISO 13849 and ISO 62061 (SIL, PL)
    • Functional safety – IEC 61508 and IEC 61511 (SIL)

    sicurezza funzionale
    SIL PL

  • PL macchine

    SAFETY OF MACHINERIES – PERFORMANCE LEVEL (PL) – EN ISO 13849

    Integrating services related to product certification (see link) and to safety of machines and plants (see link), NEMOTEC is able to perform the following tasks for all stages of design, definition and verification of the “Performance Level”:

    • Analysis of the machine aimed at identifying the safety functions
    • Evaluation and analysis of the required Performance Level according to risk identification
    • Design of safety functions
    • Functional and Reliability Block Diagrams (FBD, RBD)
    • Support in machine safety related software design
    • Check of the safety functions’ Performance Level in accordance with EN ISO 13849
    • Safety functions validation
    • Used tool: IFA SISTEMA SOFTWARE EN ISO 13849

    performance level analysis

    CE PL 13849

  • SIL turbine

    PROCESS INDUSTRY- SAFETY INTEGRITY LEVEL (SIL) – IEC 61508, IEC 61511, IEC/EN 62061)

    Integrating services related to product certification (see link) and to safety of machines and plants (see link), NEMOTEC is able to perform the following tasks for all stages of design, definition and verification of the “Safety Integrity Level”

    • Analysis of the machine aimed at identifying the safety functions
    • Evaluation and analysis of the required SIL according to risk identification
    • Design of safety functions
    • Functional and Reliability Block Diagrams (FBD, RBD)
    • Support in machine safety related software design
    • Check of the safety functions’ Safety Integrity Level in accordance with IEC 61508, IEC 61511
    • Safety functions validation
    • Used tool: Exida exSilentia IEC 61508, IEC 61511

    safety integrity level

    CE SIL 61508

  • Aggiornamento macchine

    SAFETY LOGIC UPDATE OF EXISTING AND SECOND HAND MACHINERIES

    NEMOTEC provides assistance in the management of machines and plants during refitting, changes and extraordinary maintenance (see link), also performing safety studies aimed at updating and improving the safety logics, through the following stages:

    • Analysis of control systems and implemented functional safety logics
    • Risk analysis of functional parts
    • Design of changes to the control system
    • Evaluation for functional safety integrity parameters: SIL, PL, safety categories
    • Support during the modification phases
    • Interface with electrical/electronic and software design teams
    • Interface with suppliers
    • Verification and final validation