Template Library

Ready-made fault trees for
real safety-critical systems.

Download and open any template directly in FTA Studio. Every tree includes failure rates, failure modes, detection methods, and mitigations aligned to the relevant safety standard.

Free · IEC 61025:2006 compliant · Open in one click

Bringing your own analysis? You can build a whole fault tree from a spreadsheet — or browse the guides and glossary.

Automotive OR top

AEB System Fails to Activate

Autonomous Emergency Braking failure covering sensor subsystem, ADAS processing, actuation, and redundant power supply pathways.

ISO 26262 ASIL-B 8,760 hr mission 16 nodes

Open in FTA Studio .json

Automotive AND top

Vehicle Fails to Stop — Brake System

Hydraulic service brake failure, ABS/ESC intervention failure, and redundant braking loss leading to insufficient stopping distance.

ISO 26262 ASIL-D / ECE R13 17 nodes

Open in FTA Studio .json

Aviation AND top

Total Loss of Aircraft Hydraulic Power

Catastrophic loss of all three independent hydraulic systems — Systems A, B, and emergency backup (RAT + accumulator).

ARP4761 DAL-A 25,000 hr mission 13 nodes

Open in FTA Studio .json

Rail OR top

Signal Passed at Danger (SPAD)

Train passing a stop aspect signal — covers signalling infrastructure failure, ATP system failure, and driver error pathway with probability data.

EN50126 / EN50128 SIL 4 15 nodes

Open in FTA Studio .json

Process OR top

Pressure Vessel Catastrophic Rupture

Overpressure rupture (with SIS/PRV failure), structural integrity failure (corrosion, SCC, weld fatigue), and high-temperature damage pathways.

IEC 61508 / 61511 SIL 2 16 nodes

Open in FTA Studio .json

Medical OR top

Infusion Pump Medication Overdose

Flow control mechanism failure, incorrect programming not intercepted by software limits or nurse double-check, and drug library integrity failure.

ISO 14971 / IEC 62304 16 nodes

Open in FTA Studio .json

Oil & Gas OR top

Uncontrolled Hydrocarbon Release

Pipeline integrity failure (corrosion, SCC, third-party damage), overpressure rupture with SIS/PSV failure, and flange/valve stem joint failure.

IEC 61511 SIL 2 / API RP 754 16 nodes

Open in FTA Studio .json

Nuclear AND top

Reactor Fails to SCRAM

Control rod insertion failure, reactor protection system logic failure (2oo3 voting), and ECCS failure — aligned to 10 CFR 50 single failure criterion.

MIL-STD-882E / IEEE Std 603 19 nodes

Open in FTA Studio .json

Ready-made fault trees forreal safety-critical systems.

Need a custom templatefor your industry?

Ready-made fault trees for
real safety-critical systems.

Need a custom template
for your industry?