Undergraduate Course: Process Safety 4 (CHEE10006)
Course Outline
| School | School of Engineering |
College | College of Science and Engineering |
| Course type | Standard |
Availability | Available to all students |
| Credit level (Normal year taken) | SCQF Level 10 (Year 4 Undergraduate) |
Credits | 10 |
| Home subject area | Chemical |
Other subject area | None |
| Course website |
None |
Taught in Gaelic? | No |
| Course description | This course introduces the basic principles of loss prevention and presents methods of quantitative risk assessment and consequence analysis. Methods which are amenable to hand calculation are emphasised, rather than more complex modelling methods. The legislative framework for safety in the UK, particularly with reference to the chemical and process industries, is outlined. |
Information for Visiting Students
| Pre-requisites | None |
| Displayed in Visiting Students Prospectus? | Yes |
Course Delivery Information
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| Delivery period: 2011/12 Semester 1, Available to all students (SV1)
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WebCT enabled: Yes |
Quota: None |
| Location |
Activity |
Description |
Weeks |
Monday |
Tuesday |
Wednesday |
Thursday |
Friday |
| King's Buildings | Lecture | | 1-11 | | | 10:00 - 10:50 | | | | King's Buildings | Lecture | | 1-11 | | | | 10:00 - 10:50 | |
| First Class |
Week 1, Wednesday, 10:00 - 10:50, Zone: King's Buildings. JCMB LTB |
| Exam Information |
| Exam Diet |
Paper Name |
Hours:Minutes |
|
|
| Main Exam Diet S2 (April/May) | | 2:00 | | | | Resit Exam Diet (August) | | 2:00 | | |
Summary of Intended Learning Outcomes
| Students should be able to describe the process by which a risk assessment may be carried out on a chemical process; estimate of the consequences of a given accident; estimate the probability of an accident from its contributory events; describe the legislative framework covering safety in the UK; and describe how psychological and sociological effects affect the acceptability of risk. |
Assessment Information
Two hour written examination at the end of the academic year.
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Special Arrangements
| None |
Additional Information
| Academic description |
Not entered |
| Syllabus |
This course comprises 18 lectures with additional self-studied material and two tutorials.
Lectures
Lect. 1. Introduction. Overview of process safety. Problems of complexity. Principles of Inherent safety.
Lect. 2. & 3 Uk and European Safety Legislation. Historical background. HASAWA, regulations, role of HSC and HSE. European legislative framework.
Lect 4 & 5. The Concept of risk. Definitions of risk and
hazard. Acceptability of risk. Perception of Risk. Quantification of risk. Fatal accident rate. ALARP.
Lect. 6. Probability and Frequency for Risk Assessment. Basic probability calculations. Frequency and duration of coincident events.
Lect. 7. Reliability. Definitions. Failure distributions. Reliability with multiple components. Active and passive failure. Trip reliability. Fractional dead time. Multiple channel trip systems.
Lect. 8. Fault Trees. Construction of fault trees. Finding minimum cut sets.
Lect. 9. Event Trees. Construction of event trees.
Lect. 10. Hazard Identification. Predictive vs. experience based hazard identification. Checklists and codes of practice. HAZOP methodology. Dow and Mond Indices.
Lect. 11. Occupational Health. Damaging agents. Harmful substances. Assimilation routes. Exposure limits. Toxicology, epidemiology, other methods for establishing exposure limits. COSHH. Exposure control.
Lect. 12. & 13 Fire. Flammability limits, flash point, sources of ignition. Types of fire. Diffusion and pre-mixed flames. Damaging effects. Flame size. Radiation estimation. Boilover. Area Classification.
Lect. 14. Explosions. Types of explosion. Damaging effects. TNT method for overpressure estimation. BLEVE. Dust Explosions.
Lect. 15. Source terms. Leak rates for liquids and gases. Evaporation rates from spills and jets.
Lect. 16. Human Error. Human error rates. Types of error. Performance levels. Reducing human error.
Lect. 17. Safety Management Systems. Hazards of operation and maintenance. Permit to work systems. Preparation of plant for maintenance.
Lect. 18 Safety for Design. Specific advice on safety considerations for design projects.
Tutorials
1. Fatal accident rate, probability of multiple events.
2. Reliability
3. Probit
4. Fault trees
5. Fires
6. Explosions
7. Source terms
Other Teaching Events
Self-Study topics:
Use of Probit functions (revision of previous work using handout and references)
Dust explosions $ú CSB Video supplementing lecture material - online
Boilover $ú self study material provided via the web.
Environmental health $ú additional notes provided for self-study.
Safe Working Systems $ú additional notes provided for self-study.
Guest lecture &«Practical Hazard and Risk Management&ª $ú Graham Dalziel, Safetec.
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| Transferable skills |
Not entered |
| Reading list |
1. Process Safety Analysis $ú an Introduction, Bob Skelton (IChemE, 1997).
2. Major Hazards and their Management, Geoff Wells (IChemE, 1997).
3. Lees&© Loss Prevention in the Process Industries 2nd Ed in Library, 3rd Ed available electronically via the Library.
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| Study Abroad |
Not entered |
| Study Pattern |
Not entered |
| Keywords | Not entered |
Contacts
| Course organiser | Dr Jennifer Skilling
Tel: (0131 6)50 4863
Email: J.Skilling@ed.ac.uk |
Course secretary | Mrs Kim Orsi
Tel: (0131 6)50 5687
Email: Kim.Orsi@ed.ac.uk |
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© Copyright 2011 The University of Edinburgh - 16 January 2012 5:45 am
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