S/N	Wellhead choke Parts	Failure Mode	Causes	EFFECT			CA “RPN”	RCA	MAINTENANCE TASK
S/N	Wellhead choke Parts	Failure Mode	Causes	Local	System	Plant	CA “RPN”	RCA	MAINTENANCE TASK
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