Dynamic Positioning Failure Mode Effects Analysis Assurance Framework/Анализ последствий сбоев системы динамического позиционирования

Книга на английском языке.
This information paper does not prescribe the methodology for developing an FMEA. Instead, it prescribes a standardised format for presenting information relevant to the vessel’s DP redundancy concept. This aims to facilitate an objective and effective assurance process. The information provided should be based on the vessel’s verified design documentation.

Contents
Glossary
Abbreviations
Bibliography
1 Introduction
1.1 Purpose and scope
1.2 Regulatory requirements
1.3 History and use of FMEA in other industries
2 Methodology
2.1 Introduction
2.2 Failure Methods and Effects Analyses (FMEAs)
2.3 Common failings in FMEAs
2.3.1 Common points
2.3.2 Closed bus ties and cross-connections
2.3.3 Hybrid power
2.4 Updates to the FMEA and five-yearly reviews/refreshes
2.5 Assurance of FMEAs
2.6 Assurance of periodic verification and validation
2.6.1 Data-centric evidence
2.6.2 Industry guidance on periodic verification and validation
3 Potential impact of the assurance framework
3.1 Assurance effort
4 Standardised format for presenting information
4.1 Set diagrams for redundancy concept
4.2 Redundancy Verification Tables
4.3 Single failure propagation analysis with FMEA worksheets
4.4 Sketches
4.5 Other failure modes and considerations
4.6 Categorising and communicating the outcome of the auditor’s assurance activity
Appendix A: Examples of the presentation format
A1 Content of assurance document
A2 Alternative graphical representations: shipyard drawings
A3 Example power system analysis
A3.1 Vessel description
A3.2 Redundancy Design Intent
A3.3 Main electrical power generation and distribution
A3.4 Main electrical power generation and distribution Redundancy Verification Table
A3.5 Main electrical power generation and distribution single failure propagation analysis for common points
A3.6 RVT Ref 1: Automatic changeover switch A, T5 supply port and port FiFi pump
A3.7 RVT Ref 2: Automatic changeover switch B, T5 Stbd power supply and Stbd FiFi pump
A3.8 RVT Ref 3: Automatic changeover switch C and T3 power supply
A3.9 RVT Ref 4: T5 power gearbox
A3.10 RVT Ref 5: Heavy lift crane slip ring assembly
A3.11 Main electrical power generation and distribution FMEA worksheets for common points
A3.12 Main electrical power generation and distribution conclusions
A4 Example fuel oil system analysis
A4.1 Vessel description
A4.2 Redundancy Design Intent
A4.3 Fuel oil systems
A4.4 Fuel oil system redundancy verification table
A4.5 Fuel oil systems single failure propagation analysis for common points
A4.6 Fuel contamination in both fuel oil service tanks
A4.7 Fuel oil separator failure
A4.8 Main power distribution FMEA worksheets for common points
A4.9 Fuel oil system conclusions
Appendix B: Example statement of compliance
B1 Notes on statement of compliance
B2 Vessel technical operator’s statement of compliance
Appendix C: Example sketches and Redundancy Verification Tables
C1 Redundancy Verification Tables and sketches for a range of subsystems
C2 Example separation intent and analysis for DP class 3 vessels
Appendix D: Operating instructions for FMEA sense check (heat map generator)
Appendix E: Hierarchy of controls heat map