S/N | Wellhead choke Parts | Failure Mode | Causes | EFFECT | CA “RPN” | RCA | MAINTENANCE TASK | ||
Local | System | Plant | |||||||
1 | Choke Bean (or nozzle) | Erosion | Imperfect thread contacts of bean and housing High sand production Presence of corrosive agent | High—Choke bean damage | High—Choke assembly internal damage | High—Oil reservoir upset/ damage | - | Radom failure | AI Aided Condition-Based Monitoring |
2 | Choke body | Pin hole or leakage at welded joint | Defective equipment Presence of corrosive agent | High—Choke body damage | High—Choke assembly exterior damage | Medium | Medium | - | Pre-commissioning (pressure testing) PM |