C2 PROFIBUS in a marine application

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Presentation on the use of PROFIBUS within a marine application from Mark o'Halloran, BAE Systems submarine division

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C2 PROFIBUS in a marine application

  1. 1. PROFIBUS in a Marine Application Mark O’Halloran BAE Systems
  2. 2. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 2 Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus o Network Architecture o Installation o Safety and System Redundancy o Realised Benefits Summary Any Questions
  3. 3. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 3 Introduction BAE SYSTEM Maritime are a prime contractor for the Royal Navy’s Surface Vessels and Submarines. BAE SYSTEMS Maritime Submarines are currently building the Astute Class Submarines and designing Future Submarines. Over the past 20 years the control and instrumentation on-board these vessels has transitioned from hardwired controls to computerised control systems.
  4. 4. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions Reductions in man-power (the crew). Tendency to use well-proven bespoke systems. Legacy systems suffering from obsolescence. Difficult to maintain, requiring specialist engineering knowledge. New more affordable systems, tending towards COTS solutions. 4 Reason for Change
  5. 5. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 5 System Overview – Typical Architecture Integrated Platform Management System (IPMS) Safety-Related System responsible for the control and monitoring of Propulsion, Electrical, Steering and Auxiliary systems of the vessel. Interfaces with thousands of inputs and outputs across the vessel. Provides the user interface for the operators and maintainers of the systems. Vessel Systems and Local Controls Propulsion Auxilieries Electrical Steering Communication Network Data Acquisition Units Local Operating Panel (LOP) Operator ConsoleOperator ConsoleOperator Console Printer Printer Inputs and Outputs (I/O)
  6. 6. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 6 System Requirements Safety Justification and Targets: Safety Case, Safety Integrity Level assessed to be no greater than SIL 2, Redundancy and Availability Targets have been set. Security (Information Assurance): Protectively Marked Data, Physical Security, Technical Security, e.g. Passwords and Encryption. Transverse Engineering: Shock & Vibration, Temperature, EMC, Materials Compliance. Physical Constraints: Data Collection Units size, Cable Management and Segregation, Integration into the vessel.
  7. 7. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 7 Application of PROFIBUS Network Architecture Dual Redundant Architecture. Strategically located data acquisition units. Diverse communications paths. Backed-up Power Supplies Safety Assessments, based on: o Signal Allocation, o Function Analysis, o Zonal Analysis. Dual Redundant Profibus Network Ethernet Ring PLC Synchronisation Link
  8. 8. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 8 Application of PROFIBUS Installation Data Aquisition Units and Console mounted I/O racks use copper Profibus (Supplier): o Remote I/O making use of redundant communication modules. o Optical Link Modules used to interconnect the units. Units interconnected via dual redundant fibre rings (Shipbuilder). o Bulkhead Penetrations/Connectors o Shared Network Cables o Network Patch Boxes Lessons Learnt so far… o Fibre Discipline. o Education for designers, installers and end-users. o Accessibility for modifications and maintenance.
  9. 9. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 9 Application of PROFIBUS Safety & System Redundancy No fail-safe state, Continuous Operation – even in degraded conditions, Reliance on Operator – Man in the loop, System Failure can lead directly to hazard. Safety Assessments Safety Argument using GSN “IPMS is tolerably safe...”, SIL 2 Development Process (Design, Implementation & Testing), Single Point of Failures, HAZID and HAZOP, RBDs and Fault Trees.
  10. 10. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 10 Application of PROFIBUS Example Safety Argument using GSN
  11. 11. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions Example Reliability Block Diagram Modular RBD, component parts calculated individually. Reliability calculations developed in accordance with Manufacturer’ s Data, MIL-HDBK and IEC 61508. Forming part of the SIL 2 Development Process. 11 Application of PROFIBUS Dual Profibus Network (Section A) Dual Redundant PLC (Section A) Ethernet Ring Dual Redundant PLCs (Section B) Dual Profibus Network (Section B)
  12. 12. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 12 Application of PROFIBUS Realised Benefits Adaptable to change – Easy to integrate additional I/O points. Enhanced Diagnostics for Maintainers. Reductions in the volume of copper cabling. Fibre Optics reduces the impact of Electromagnetic Interference. In-service evidence to support safety justifications. And finally - Through Life Cost savings.
  13. 13. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 13 Summary New and innovative system for the shipbuilder – new challenges being addressed. Regular training sessions set-up to aid boat installation, commissioning and ultimately operating the system. Early commissioning activities have identified a number of advantages of the system, compared to previous systems. o Enhanced, easy to access, diagnostics. o Flexibility to extend the network and I/O. Studies currently been undertaken: o Using PROFINET, o Smart Instrumentation, o Standardising interfaces to equipment.
  14. 14. Agenda Introduction Reason for Change System Overview System Requirements Application of Profibus Summary Questions 14 Questions? Thank you… Any Questions? Mark O’Halloran / PROFIBUS in a Marine Application

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