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    ASCO SIL Certificate

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    Anonymous knICax
    The Redundant Control System from ASCO Valve, Inc. was assessed against IEC 61508 and found to meet requirements for SIL 3 capability and Type A architecture. It has a systematic capability of SC3 and will move to a safe state when de-energized. The product's failure rates were provided for use in calculating SIL verification. The certificate is valid until July 2018 and the assessment report and safety manual are mandatory parts of the certification.

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    ASCO SIL Certificate

    Uploaded by

    Anonymous knICax
    633 views2 pages
    The Redundant Control System from ASCO Valve, Inc. was assessed against IEC 61508 and found to meet requirements for SIL 3 capability and Type A architecture. It has a systematic capability of SC3 and will move to a safe state when de-energized. The product's failure rates were provided for use in calculating SIL verification. The certificate is valid until July 2018 and the assessment report and safety manual are mandatory parts of the certification.

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    ASCO SIL Certificate

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    The Redundant Control System from ASCO Valve, Inc. was assessed against IEC 61508 and found to meet requirements for SIL 3 capability and Type A architecture. It has a systematic capability of SC3 and will move to a safe state when de-energized. The product's failure rates were provided for use in calculating SIL verification. The certificate is valid until July 2018 and the assessment report and safety manual are mandatory parts of the certification.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    633 views2 pages

    ASCO SIL Certificate

    Uploaded by

    Anonymous knICax
    The Redundant Control System from ASCO Valve, Inc. was assessed against IEC 61508 and found to meet requirements for SIL 3 capability and Type A architecture. It has a systematic capability of SC3 and will move to a safe state when de-energized. The product's failure rates were provided for use in calculating SIL verification. The certificate is valid until July 2018 and the assessment report and safety manual are mandatory parts of the certification.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    Certificate / Certificat

    Zertifikat /
    ASC 1205106 C001
    exida hereby confirms that the:

    The manufacturer
    may use the mark:

    Redundant Control System


    ASCO Valve, Inc.
    Florham Park, NJ - USA
    Has been assessed per the relevant requirements of:

    IEC 61508 : 2010 Parts 1-7


    and meets requirements providing a level of integrity to:

    Systematic Capability: SC 3 (SIL 3 Capable)


    Random Capability: Type A, Route 2H Device
    Valid until July 1, 2018
    Revision 1.1 June 26, 2015

    PFDAVG and Architecture Constraints


    must be verified for each application
    Safety Function:
    The Redundant Control System will move to the safe state,
    normally open or normally closed, within the specified safety
    time when de-energized.
    Application Restrictions:
    The unit must be properly designed into a Safety Instrumented
    Function per the Safety Manual requirements.

    Place embossed
    seal here for
    originals, lining it
    up at the bottom

    ANSI Accredited Program

    Evaluating Assessor

    Certifying Assessor

    PRODUCT CERTIFICATION
    #1004

    Page 1 of 2

    Certificate / Certificat / Zertifikat /


    ASC 1205106 C001
    Systematic Capability: SC 3 (SIL 3 Capable)
    Random Capability: Type A, Route 2H Device
    PFDAVG and Architecture Constraints
    must be verified for each application
    Systematic Capability :

    Redundant Control
    System

    The product has met manufacturer design process requirements of Safety


    Integrity Level (SIL) 3. These are intended to achieve sufficient integrity
    against systematic errors of design by the manufacturer.
    A Safety Instrumented Function (SIF) designed with this product must not
    be used at a SIL level higher than stated.
    Random Capability:
    The SIL limit imposed by the Architectural Constraints must be met for
    each element. This device meets exida criteria for Route 2H.

    IEC 61508 Failure Rates in FIT*


    Failure Rates Redundant Control System with Automated Diagnostic Tests

    Device
    Solenoid Valve
    Bypass Valve
    Pressure Switch

    lsd
    594 FIT
    57 FIT
    444 FIT

    lsu
    261 FIT
    88 FIT
    5 FIT

    ldd
    502 FIT
    7 FIT
    0 FIT

    ldu
    10 FIT
    0 FIT
    0 FIT

    Failure Rates Redundant Control System with Manually Initiated Diagnostic


    Tests

    Device
    Solenoid Valve
    Bypass Valve
    Pressure Switch

    lsd
    0 FIT
    0 FIT
    0 FIT

    lsu
    855 FIT
    145 FIT
    449 FIT

    ldd
    0 FIT
    0 FIT
    0 FIT

    ldu
    512 FIT
    7 FIT
    0 FIT

    * FIT = 1 failure / 109 hours


    PVST = Partial Valve Stroke Test of a final element Device
    SIL Verification:
    The Safety Integrity Level (SIL) of an entire Safety Instrumented Function (SIF)
    must be verified via a calculation of PFDavg considering redundant architectures,
    proof test interval, proof test effectiveness, any automatic diagnostics, average
    repair time and the specific failure rates of all products included in the SIF. Each
    element must be checked to assure compliance with minimum hardware fault
    tolerance (HFT) requirements.
    The following documents are a mandatory part of certification:
    64 N Main St
    Sellersville, PA 18960

    Assessment Report: ASC 12-05-106 R001 V1R3


    Safety Manual: SM V9535; R2; 02/11

    T-061, V1R7

    Page 2 of 2

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