Safety & Risk Analysis

Safety and Risk analysis involves a meticulous study of product / system failure modes, effects, failure rates and probabilities, and mitigation measures.

Safety analysis is often required by regulation, however, some OEMs and integrators lack the staff and expertise to conduct such analyses.

RAMS analyses are required by many international standards

Topic Standard
Generic functional safety of Electrical/Electronic/Programmable Electronic Safety-related Systems IEC 61508
Functional safety for RAIL EN 50126-50129
Functional safety for Automotive ISO 26262
Functional safety for Process industry IEC 61511
Functional safety for Nuclear industry IEC 61513
Guidelines For Development Of Civil Aircraft and Systems ARP 4754A
Application of risk management to medical devices ISO 14971

 

The RAMS analysis methods are also defined in standards

Method Standard
FMEA, FMECA Mil-Std-1629A, Mil-Std-882E

 

FTA IEC 61025

 

RBD IEC 61078
MTTR MIL HDBK-472
Markov chains IEC 61165

 

BQR provides safety analysis services using the following methodologies

  • Functional Hazard Analysis
  • Failure Modes, Effects, and Criticality Analysis (FMEA / FMECA)
  • Fault Tree Analysis
  • Testability Analysis (Built In Test coverage and isolation)
  • Safety Integrity Level (SIL) analysis
  • Mean Time To Repair (MTTR)
  • Reliability Block Diagram (RBD)
  • Markov chains

Following is a flow diagram for standard safety analysis