FMEA Analyzer

Comprehensive Failure Modes and Effects Analysis with severity ratings, detection methods, and risk mitigation strategies for mission assurance.

18
Total Failure Modes
3
Critical (RPN > 100)
5
High Priority
85%
Mitigated

Risk Priority Matrix

RPN Distribution by Subsystem

Failure Mode Database

ID Subsystem Failure Mode Effect Sev Occ Det RPN Mitigation
FM-001 Propulsion Thruster motor failure Loss of maneuverability 8 3 4 96 Redundant thrusters, auto-surface
FM-002 Propulsion Propeller entanglement Reduced thrust, motor damage 6 4 5 120 Prop guards, current monitoring
FM-003 Navigation IMU drift exceeds limit Position uncertainty grows 5 5 3 75 Acoustic beacon updates
FM-004 Navigation DVL bottom-lock loss Velocity estimate degraded 5 4 2 40 Model-based prediction
FM-005 Power Battery cell failure Reduced capacity, imbalance 7 2 3 42 BMS monitoring, cell balancing
FM-006 Power Battery depletion System shutdown 9 3 2 54 Low-power warning, auto-abort
FM-007 Communication Acoustic link loss Cannot receive commands 6 4 3 72 Autonomous mission, timeout abort
FM-008 Hull Water ingress Electronics damage 10 2 3 60 Leak sensors, watertight compartments
FM-009 Hull Pressure seal failure Flooding, loss of vehicle 10 1 4 40 Regular inspection, drop weight
FM-010 Navigation Depth sensor failure Cannot maintain depth 7 2 2 28 Redundant pressure sensor

RPN Calculation

Risk Priority Number (RPN) = Severity × Occurrence × Detection

RPN > 100: Critical - Immediate action required | RPN 50-100: High - Action recommended | RPN < 50: Acceptable with monitoring