PRD Expert System¶

Overview¶

The PRD (Pressure Relief Device) Expert System is configured to assist in the management of clients’ pressure relief devices. This expert system has been configured to allow storage of each PRDs general, design and process data, as well as display each PRD’s inspection history. A PRD inspection plan is automatically calculated following a PRD criticality assessment.

Codes / Standards¶

N/A

Asset Types¶

Asset Type	Description
PRD	Pressure Relief Device
PVRD	Pressure Vacuum Relief Device

Asset Information¶

Asset Information	Description	Assigned to Type(s)
PRD General Information	General PRD information including tag no., location, associated pipework etc.	PRD, PVRD
PRD Design Data	Valve and body trim data. Sizing basis data.	PRD, PVRD
PRD Process Data	Fluid type and state, pressure, temperature, liquid, and vapor data.	PRD, PVRD
PRD Inspection History	Last inspection data, count of defaults etc.	PRD, PVRD
PRD Criticality Assessment	Criticality, consequence, and confidence grading including justifications.	PRD, PVRD
PRD Inspection Plan	Criticality assessment result, calculated and approved inspection plan (intervals, last inspection date and next recommended date plus overrides).	PRD, PVRD

Risk Models¶

Inspection / Maintenance Events¶

Event Type	Description	Assigned to Type(s)
PRD Inspection	PRD Inspection form - As-received condition and initial test results, strip down internal condition, final test data after overhauling/repairs.	PRD, PVRD
PRD Change Out	Used when the PRD has been changed out. Includes the reason for change out plus serial number removed and installed.	PRD, PVRD

Traffic Lights¶

Note

Traffic Lights are currently not distributed with the Expert System.

Dashboards / Reports¶

Event Type	Description
PRD overview	For each PRD asset, this report displays general PRD information, inspection history, criticality assessment, risk chart and the inspection plan.