Flowserve Limitorque MX Safety Manual

flowserve.com FLOWSERVE PROPRIETARY INFORMATION Use or disclosure of this information is subject to the restrictions on the title page of this document In other words, using an MXa in an SIL-2 SIF will absorb 52.4% of the available bandwidth for SIL-2. In order to maintain a SIL-2 capability for the entire SIF, the total of the PFDavg values for all of the components that comprise the SIF must sum to no more than 0.01. Therefore the total of the PFDavg values for all of the other components that comprise the SIF control loop ...

flowserve.com FLOWSERVE PROPRIETARY INFORMATION Use or disclosure of this information is subject to the restrictions on the title page of this document 10 Emergency Shutdown (ESD) ESD signals may be applied to the actuator to override any existing command signal and send the valve to its pre- selected shutdown position, providing the actuator is in the remote mode. Any non-ESD command signal will be ignored while the ESD signal is asserted. 10.1 Configurable ESD Actions • Open • Close • Stop • Ignore (continue normal o ...

flowserve.com FLOWSERVE PROPRIETARY INFORMATION Use or disclosure of this information is subject to the restrictions on the title page of this document 13 13.1 Normal Operation Refer to the Instruction, Operation and Maintenance [IOM] manual for Limitorque MX Electronic Actuator, #LMENIM2306. The latest version can be found on the Flowserve website at www.flowserve.com. 13.2 Safety Operation and Maintenance To ensure that the failure rates remain in the normal, random failure mode and to avoid the increasing failure rates that ...

8 FLOWSERVE PROPRIETARY INFORMATION Use or disclosure of this information is subject to the restrictions on the title page of this document 2.4 Proof Test Period (Tpt) Full stroke test at least once per year ==> 8760 hr Based upon the extent of the proof test, failures undetected during normal operation or during PST may be uncovered during full proof test. 2.5 Failures in Time (FIT) Number of failures in time. 2.6 Mean Time to Restoration (MTTR) Average failure detection time plus average repair time. 2.7 SFF Safe failure fracti ...