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Week | Date
| Subject | Lectured topics | Motivation | Lecturer | Tutorials | ||||
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35 | 25. & 26.8 | All | 1st hour:
2nd-3rd hours
| Inform the students about the course objectives, intended learning outcomes, and practicalities.
| Mary Ann |
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36 | 2.-3.9 | 1 | IEC 61508 - its application area | IEC 61508 is a key standard on design of safety-critical systems, when the technology used include electrical, Petroleum, railway, nuclear, the "umbrella" of this standard. equipment under control, safety integrity level (SIL), risk reduction factor, and many more. Safety design principles, such as | Mary Ann |
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37 | 9.-10.9 | 2 | ||||||||
38 | 16.-17.9 | 2 |
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39 | ||||||||||
1 | Safety-critical systems: Development of SIL requirements | The mentioned IEC standard(s) require a structured process for defining SIL requirements. Methods like layers of protection analysis (LOPA) and risk graph are often used for this purpose. Risk graph is used with many applications, such as for machinery and process industry, whereas LOPA is mainly used in the process industry. In the oil and gas industry, for example, it is common to have LOPA-sessions/workshops in an early planning of new systems. A special case of defining SIL requirements is the minimum SIL, advocated in a Norwegian guideline for offshore oil and gas facility, Norsk Olje og Gass guideline 070. This approach builds on principles called GALE or GAMAB. | Mary Ann |
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38 | 16.-17.9 | 1 | Safety-critical systems: (Textbook chapter 8) | Students that take this course are familiar with simplified formulas for calculating the average probability of failure on demand (PFD).
| Mary Ann |
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39 | 23.-24.9 | 1 | Safety-critical systems: Quantification of reliability for systems operating on demand (continued) with focus on PetriNets (Textbook chapter 5 and 8) | PetriNets is an alternative approach for calculating the the PFD. PetriNets have not been much used for this particular purpose, but the approach is widely used in many other application areas such as the modeling of communication and software. In our context, PetriNets have got increased attention as the newest version of IEC 61508 and a new technical guideline published by ISO, the ISO/TR 12489) mention and give application examples. | Yiliu |
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40 | 30.9-1.10 | 1 | Safety-critical systems: Quantification of reliability for systems operating on demand (continued) with focus on partial and imperfect testing | 40 | ||||||
41 | ||||||||||
42 | ||||||||||
43 | ||||||||||
44 | 27&28.10 | 2 | Age, block, and minimal repair strategies | Maintenance optimization:
| Jørn | |||||
45 | 4&5.11 | 2 | Age, block, and minimal repair strategies (continued) | Jørn | ||||||
46 | 11&12.11 | 2 | Spare-part optimization | Spare parts may be costly to have on the stock, but at the same time it is costly not to have a spare part available when it is needed. This topic concern how to calculate the probability of running out of spares, using simple formulas and Markov analyses. The use of PetriNets for this purpose is also shown. This topic may not be some relevant for very specialized systems, where it is not possible to acquire a spare within short time. For a manufacturer that develops products, such as sensors, in a large scale to e.g. the oil and gas industry, it may be relevant to find the optimal number of spare parts for warranty and repair services. | Yiliu (Mary Ann | |||||
47 | 18.&19.11 | N/A | Student presentations (also using tutorial hours) | Students get the possibility to reflect on the lectured topics and in particular to see how these are related to their specialization project, and how they may be applicable for their master project. | ||||||
48 | Summary | |||||||||
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