Masoneilan Products SVI II ESD - GE Energy
Masoneilan Products SVI II ESD - GE Energy
Masoneilan Products SVI II ESD - GE Energy
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Installation and <br />
Maintenance<br />
2<br />
Introduction<br />
The <strong>SVI</strong> <strong>II</strong> <strong>ESD</strong> (Emergency Shutdown Device) is our solution to improve process<br />
integrity in a processing plant; designed to prevent and mitigate possibly<br />
uncontrollable situations.<br />
The <strong>SVI</strong> <strong>II</strong> <strong>ESD</strong> is a PST controller that mounts on a pneumatically actuated valve<br />
assembly. Its role is to position an emergency shutdown valve to 0% or 100% with<br />
a probability of failure on demand (PFD) in accordance with IEC61508 for SIL3<br />
application (SIL = Safety Integrity Level). It replaces the solenoid that is typically<br />
utilized to actuate a spring-return or double-acting actuator, while providing<br />
extensive online valve diagnostics.<br />
Figure 1 <strong>SVI</strong> <strong>II</strong> <strong>ESD</strong><br />
13