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SIL Safety Manual
D103401X012
July 2010
ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator
SIL Safety Manual for Fisher ED, ET, EZ,
HP, or HPA Valves with 657 / 667 Actuator
Purpose Introduction
This safety manual provides information necessary
to design, install, verify and maintain a Safety This manual provides necessary requirements for
Instrumented Function (SIF) utilizing the Fisher ED, meeting the IEC 61508 or IEC 61511 functional
ET, EZ, HP, or HPA valve with 657/667 actuator. safety standa
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SIL Safety Manual July 2010 ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator Fail No Effect: Failure of a component that is part of Terms and Abbreviations the safety function but that has no effect on the Safety: Freedom from unacceptable risk of harm. safety function. Functional Safety: The ability of a system to carry Low Demand Mode: Mode, where the frequency of out the actions necessary to achieve or to maintain a demands for operation made on a safety-related defined safe state for the equip
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SIL Safety Manual July 2010 ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator ANSI/ISA 84.00.01-2004 (IEC 61511 Mod.) Related Literature Functional Safety – Safety Instrumented Systems for Hardware Documents: the Process Industry Sector 51.1:ED, Fisher ED, EAD, and EDR SlidingStem Control Valves Bulletin: D100017X012 Fisher ED and EAD easye Valves CL125 through Device Description CL600 Instruction Manual: D100390X012 Fisher ED single-port valves (figure 1) have cage guiding, quick-change tri
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SIL Safety Manual July 2010 ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator time. The PVST must be performed 10 times more Designing a SIF Using Fisher ED, often than an expected demand in order for credit to ET, EZ, HP, or HPA Valve be given for this test. Safety Function Design Verification When the valve’s actuator is de-energized, the A detailed FMEDA report is available from Emerson actuator and valve shall move to its fail-safe position. Process Management. This report details all failure D
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SIL Safety Manual July 2010 ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator user or diverse technology redundancy in the subsystem needs to be sized properly to assure that design. the response time is less than the required process safety time. The ED, ET, EZ, HP, or HPA valve will move to its safe state in less than the required SIF’s Random Integrity safety time under the specified conditions. The ED, ET, EZ, HP, or HPA valves are classified as All SIS components including the ED, ET, EZ, HP,
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SIL Safety Manual July 2010 ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator maintain the required Safety Integrity of the Safety Physical Location and Placement Instrumented Function. The Fisher ED, ET, EZ, HP, or HPA valve shall be accessible with sufficient room for the actuator, The proof test shown in table 1 is recommended. pneumatic connections, and any other components The results of the proof test should be recorded and of the final control element. Provisions shall be made any failures t
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SIL Safety Manual July 2010 ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator Appendix A Start-Up Checklist The following checklist may be used as a guide to Sample Startup Checklist employ the ED, ET, EZ, HP, or HPA valve in a safety This appendix provides a Sample Start-up Checklist critical SIF compliant to IEC61508. for a Fisher ED, ET, EZ, HP, or HPA valve. A start-up checklist will provide guidance during the final control element’s employment. # Activity Result Verified By Date Design Target
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SIL Safety Manual July 2010 ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator Note Neither Emerson, Emerson Process Management, nor any of their affiliated entities assume responsibility for the selection, use, or maintenance of any product. Responsibility for the selection, use, and maintenance of any product remains with the purchaser and end user. Fisher, FIELDVUE, and easye are marks owned by one of the companies in the Emerson Process Management business division of Emerson Electric Co. Emers
