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GROUP H: Yi Cui, Suelen, Jing Han, Blou, Jose, Maria, Amil

Cover – 1 page

Introduction – 1 page

Task 1 (max – 1 page):

                WHO? ALL – DEADLINE 10TH APRIL

  • Read Volume 1 Yellow Book – take max .4 aspects which could bring benefits to US Military (explain why)
  • Read sections 1 to 6 and tasks 201 to 206 from MIL-STD-882E – take max. 4 aspects which could bring benefits to CPD projects (explain why)
  • Take max. 4 significant differences between the 2 approaches

 

Step A:  (SYSTEM – max 3 pages) = 2, 3, 4

                WHO? YI CUI, SUELEN & AMIL – DEADLINE 12TH APRIL

  • Read Chapter 14 of Yellow Book, and:
    • Review definition of WFD1 Point System and create a checklist in order to perform a FHA (Functional Hazard Analysis) , IHA (Interface Hazard Analysis) and OSHA (Occupational Safety and Health Administration);
    • Prepare an improved system definition (include assumptions at the end of this section) – which should include:

 

Step B: (HAZARD – max 3 pages) = 5, 6

WHO? JING HAN, BLOU & JOSE – DEADLINE 14TH APRIL

  • Read Chapter 15 and sections C.1, E.1 and E.2 of Yellow Book, and:
    • Take the system definition from Step A and attempt the following hazards identification tasks: Apply checklist; FHA; IHA; OSHA;
    • Tip one of the hazards will be: “The left-hand switch rail is allowed to move away from the stock rail, even though the points are locked and no movement has been requested, leading to train derailment”
    • Produce a consolidated list of hazards (Hazard Log), their causes and consequences;
    • Record any assumptions you had;
  • Prepare a safety case comprising:
    • Summary;
    • Hazard Log;
    • The answers to questions provided to you by your professor ????
    • Assumptions

Step C: (FAULT TREE EVENT TREE ANALYSIS / RISK ASSESSMENT – max 4 pages) = 6.1

                WHO? MARIA, AMIL & YI CUI – DEADLINE 17TH APRIL

  • Read Section 6 of `BB54m / Surelock (4ft Direct Drive) Points Systems Maintenance Manual` (document number GEN-RPT-TRK-A001-0000195, issue 2.0) & study figures 6.1 and 10.9, and:
    • Draw a Fault Tree and an Event tree for the hazard (without frequencies or probabilities): “The left-hand switch rail is allowed to move away from the stock rail, even though the points are locked and no movement has been requested, leading to train derailment”, assuming 3 things:
      • system being analysed excludes the switch rail but includes the bolts used to attach brackets to the switch rail;
      • the drive and locking mechanisms contain the rods, the clevis assemblies, and the brackets as well as the nuts and bolts that connect them but do not break the clevis assembly down further for the purpose of the analysis;
      • incorrect input from the signalling system is excluded from the hazard and that loss of power will not cause the hazard;
    • Assumptions (if necessary);

 

Step D: (QUANTITATIVE RISK ASSESSMENT – max 2 pages) = 6.2

                WHO? SUELEN, JING HAN & BLOU – DEADLINE 19TH APRIL

  • Read Chapter 15 of the Yellow Book concentrating in the Risk Assessment section and section E.2 of Yellow Book 4 (Fault Tree Analysis), and calculate risk of the Hazard using Fault Tree / Event Tree, assuming:
    • Average 0.055 fatalities per year;
    • Cost of £1M if derailment > 10mph or Cost of £0.3M if derailment < 10mph;
    • NPV = £10M;
    • > 10mph derailment will cause : 1 fatality + 10 major injuries + 50 minor injuries
    • < 10mph derailment will cause: 3 major injuries + 25 minor injuries;
    • To prevent fatality LU will have to spend £ 1.3M

 

Step E: (MITIGATIONS & IMPACT ANALYSIS – max 3 pages) = 6.3

                WHO? JOSE, MARIA & AMIL – DEADLINE 21ST APRIL

  • Read Chapter 15 of the Yellow book concentrating on section 15.3.3.5, and:
    • Identify potential mitigation / barriers for the hazard;
    • Estimate cost in pounds of each mitigation / barriers, capital expenditure, operational expenditure & reduction in the costs of dealing with the derailments;
    • Estimate safety reduction in FWI per year as a consequence of implementing mitigation measure (use fault tree/event tree already developed);
    • Compare the safety benefit with the cost, expressed as a NPV and form a conclusion regarding reasonable practicability;
  • Prepare a safety case comprising:
    • Summary;
    • Marked up sheets form QRA;
    • A summary of your calculations;

Step F: (DEMONSTRATION OF ALARP – max 5 pages) = 6.4

                WHO? YI CUI, SUELEN, JING HAN – DEADLINE 23RD APRIL

  • Read Chapter 15 of the Yellow Book concentrating on section 15.3.3.7, and justify using GSN (Goal Structuring Notion) why the following hazard is being managed to a level of safety risk that is ALARP:
    • “The left-hand switch rail is allowed to move away from the stock rail, even though the points are locked and no movement has been requested, leading to train derailment”
  • Prepare a technical safety report comprising:
    • Summary
    • ALARP argument discussion
    • Summary of the calculation
    • Assumptions and Recommendations

 

Step G (TECHNICAL SAFETY REPORT AND PRESENTATION)

                WHO? BLOU, JOSE & MARIA – DEADLINE 25TH APRIL

  • Read Chapter 18 of the Yellow Book concentrating on section 18.3.9, and:
    • Assemble all the previous steps in 25 pages for submission following the structure given on the course work project.
    • Prepare Introduction & Conclusion – max (2 page)

 

26TH SUBMISSION

______________________________________________________________________

 

 

Questions:

  1. Do we need to prepare a summary/assumptions for each Step?
  2. Which questions from the professor is Step A and B referring to?

 

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