By default, the following Active IPL records are available in GE Digital APM:
| Active IPL ID | Lower Range | Upper Range | Default Value |
|---|---|---|---|
| Rupture disc | 1E-05 | 0.1 | 0.01 |
| Relief Valve | 1E-05 | 0.1 | 0.01 |
| Basic Process Control System | 0.01 | 0.1 | 0.1 |
An active IPL is a device or system that changes from one state to another in response to a change in process activity. For example, a pressure relief device is an active IPL that opens when there is an abnormal change in the pressure inside a vessel and remains open until the pressure in the vessel reduces to a value below the settings in the pressure relief device.
In LOPA, you can create an Active IPL record for each type of active IPL. This record stores the recommended probability of failure on demand (PFD) of the active IPL device or system. The PFD value indicates the likelihood that the active IPL system will fail to perform its safety function when required. The Active IPL records populate the IPL Sub Type field in the IPL Checklist section of the Safeguard, which is of type Active IPL.
By default, the following Active IPL records are available in GE Digital APM:
| Active IPL ID | Lower Range | Upper Range | Default Value |
|---|---|---|---|
| Rupture disc | 1E-05 | 0.1 | 0.01 |
| Relief Valve | 1E-05 | 0.1 | 0.01 |
| Basic Process Control System | 0.01 | 0.1 | 0.1 |
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