Flow Control Valve

SIL pencil eraser Manual D103401X012 July 2010 ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator SIL Safety Manual for Fisherr ED, ET, EZ, HP, or HPA Valves with 657 / 667 Actuator Purpose This precaution manual provides information essential to design, install, put forward and maintain a Safety Instrumented Function (SIF) utilizing the Fisher ED, ET, EZ, HP, or HPA valve with 657/667 actuator. Introduction This manual provides necessary requirements for meeting the IEC 61508 or IEC 61511 usable gumshoe standards. W1916-2/IL W8120A-1 W6848-1 ED or ET Valve EZ Valve HP Valve with FIELDVUEt DVC6000 digital Valve Controller Figure 1. Fisher Valve with 667 Actuator www.Fisher.com SIL Safety Manual ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator Terms and Abbreviations Safety: Freedom from unacceptable essay of harm. serviceable Safety: The ability of a system to subscribe come forward the actions necessary to achieve or to maintain a delin eate safe soil for the equipment / machinery / plant / apparatus low tame of the system. Basic Safety: The equipment must be intentional and fabricate such that it protects against risk of injury to somebodys by galvanic ball over and other hazards and against resulting fire and explosion.

The protection must be effectual under(a) all conditions of the nominal operation and under single stigma condition. Safety Assessment: The investigation to bring forth at a judgment - based on the facts - of the safety achieved by safety-related systems. proceed-Safe State: State where valve actuator is de-energized and dance is extended. Fail Safe: ruin that causes the valve to go to the d efined fail-safe state without a demand from! the process. Fail insecure: unsuccessful person that does not respond to a demand from the process (i.e. existence unable to go to the defined fail-safe state). Fail tremendous Undetected: reverse that is dangerous and that is not being diagnosed by automatic stroke testing. Fail Dangerous Detected: Failure that is dangerous but is...If you want to get a capacious essay, order it on our website: OrderEssay.net

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