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May 2020

[SCSC-158] Safety Systems vol.28-2
 Newsletter thumbnail

The Safety-Critical Systems Club Newsletter, Volume 28, Number 2
Edited by Paul Hampton
Publisher: Safety-Critical Systems Club
Available: to subscribing club members

Editorial

After over a month of lockdown, it is frightening to think how much Coronavirus has changed our world in such a short space of time. In the intervening time between two newsletter editions, we’ve witnessed unprecedented events that have affected everybody’s lives in some way, and likely to have long lasting impacts at both a local and global level. There is also much novelty in our experiences now: who would previously have commonly used terms such as: ‘self-isolation’, ‘furlough’, ‘social distancing’ and ‘flattening the curve’, or practised those careful avoidance manoeuvres on our streets and supermarkets?

These novel circumstances have brought the art of safety assessment right into the public domain. Venturing outside is now done only after careful assessment of the potential hazards and available risk controls and mitigations. However, we find ourselves with an unfortunately tricky form of risk assessment. In practical terms, the likelihood of contracting the disease in lockdown is very low, but the criticality, death is, of course, very high. This equates to that awkward corner of the risk matrix; should some hazards therefore be eliminated entirely, or can we countenance an ALARP discussion on whether to order a take-away, open the mail or pet the next-door neighbour’s cat?

Also, a critical aspect of the crisis has been the data on which everyone, including governmental policy makers are basing their safety-related decisions. There has been no shortage of data from a wide variety of sources: epidemiological data of course, but also other critical data such as the acceptable social distance to maintain and the length of time the virus can survive on different surface types. These are critical influencing factors when applied to large populations, but the data has been conflicting at times and there are often polarised ‘expert’ opinions on how it is to be interpreted.

To help make sense of this uncertain landscape, the SCSC has set up a Working Group that is meeting weekly to see what a systems and assurance view of the situation can bring. Visit the working group page scsc.uk/gv to find out more, and for details of how to join the group.

This edition covers a diverse range of topics, but they share a common theme: how organisations themselves approach and manage risk is equally important to managing the technical system risks. In our first article, Professor Harold Thimbleby, discusses his concerns with the reliability of the epidemiological modelling currently being undertaken to combat Coronavirus. John Ridley discusses the organisational approach to risk management adopted by the Highways Agency in developing Smart Motorways. Andrew King then discusses how tool-based GSN enhancements can help an organisation manage complex safety cases. Nicholas Hales looks at the organisational structures in place during the Chernobyl incident and assesses these from a data perspective. We conclude with insights from the Service Assurance Working Group on how organisations can assure Services.

There is a summary report of SSS’20 and I have great pleasure in including the transcript of Tim Kelly’s entertaining and thought-provoking after-dinner speech.

Our 60 second interview is with Professor Erik Hollnagel.

Stay safe!

Paul Hampton SCSC Newsletter Editor
paul.hampton@scsc.uk

Contents


    
How Reliable are Pandemic Models?
8th Jun 2020
196KB View article
  
Harold Thimbleby
    
How Smart Are Our Motorways?
8th Jun 2020
506KB View article
  
John Ridgway
    
Complex Safety Cases – Enhancing The Goal Structuring Notation
8th Jun 2020
1016KB View article
  
Andrew King
    
Formalising Communication On Potentially Catastrophic Safety Projects
8th Jun 2020
568KB View article
  
Nicholas Hales
    
Service Assurance Guidance
8th Jun 2020
2MB View article
  
SCSC Service Assurance Working Group (SAWG)
    
SCSC Symposium 2020
8th Jun 2020
640KB View article
  
    
Tim Kelly’s SSS’20 After-dinner Speech
8th Jun 2020
59KB View article
  
Tim Kelly
    
SCSC Working Groups
8th Jun 2020
313KB View article
  
    
60 Seconds with… Professor Erik Hollnagel
8th Jun 2020
91KB View article
  

Feb 2020

[SCSC-154] Assuring Safe Autonomy
Proceedings of the Twenty-eighth Safety-Critical Systems Symposium, York, UK.

Feb 2020

[SCSC-157] Safety Systems vol.28-1
The Safety-Critical Systems Club Newsletter, Volume 28, Number 1

Feb 2020

[SCSC-127E] Data Safety Guidance (Version 3.2)
by the SCSC Data Safety Initiative Working Group [DSIWG]

Feb 2020

[SCSC-156] Service Assurance Guidance

Feb 2020

[SCSC-153A] Safety Assurance Objectives for Autonomous Systems V2

Oct 2019

[SCSC-155] Safety Systems vol.27-2
The Safety-Critical Systems Club Newsletter, Volume 27, Number 2

Feb 2019

[SCSC-150] Engineering Safe Autonomy
Proceedings of the Twenty-seventh Safety-Critical Systems Symposium, Bristol, UK.

Feb 2019

[SCSC-127D] Data Safety Guidance (Version 3.1)
by the SCSC Data Safety Initiative Working Group [DSIWG]
This resource is superseded by: [SCSC-127E]

Feb 2019

[SCSC-153] Safety Assurance Objectives for Autonomous Systems
This resource is superseded by: [SCSC-153A]

Jan 2019

[SCSC-152] Safety Systems vol.27-1
The Safety-Critical Systems Club Newsletter, Volume 27, Number 1

Feb 2018

[SCSC-140] Evolution of System Safety
Proceedings of the Twenty-sixth Safety-Critical Systems Symposium, York, UK.

Jan 2018

[SCSC-141B] Goal Structuring Notation Community Standard (Version 2)
Version 2 of the Goal Structuring Notation Standard.

Jan 2018

[SCSC-127C] Data Safety Guidance (Version 3.0)
by the SCSC Data Safety Initiative Working Group [DSIWG]
This resource is superseded by: [SCSC-127E]

Jan 2018

[SCSC-143] Safety-Related Challenges for Autonomous Systems

Apr 2017

[SCSC-137] Agile Methods for Developing Safety-related Software?

Apr 2017

[SCSC-151] Safety Systems vol.26-1
The Safety-Critical Systems Club Newsletter, Volume 26, Number 1

Feb 2017

[SCSC-136] 25 at 25
A selection of articles from twenty-five years of the SCSC newsletter Safety Systems

Feb 2017

[SCSC-135] Developments in System Safety Engineering
Proceedings of the Twenty-fifth Safety-Critical Systems Symposium, Bristol, UK.

Jan 2017

[SCSC-127B] Data Safety Guidance (Version 2.0)
by the SCSC Data Safety Initiative Working Group [DSIWG]
This resource is superseded by: [SCSC-127E]

May 2016

[SCSC-144] Safety Systems vol.25-3
The Safety-Critical Systems Club Newsletter, Volume 25, Number 3

Feb 2016

[SCSC-131] Developing Safe Systems
Proceedings of the Twenty-fourth Safety-Critical Systems Symposium, Brighton, UK.

Jan 2016

[SCSC-127A] Data Safety Guidance (Version 1.3)
by the SCSC Data Safety Initiative Working Group [DSIWG]
This resource is superseded by: [SCSC-127E]

Jan 2016

[SCSC-148] Safety Systems vol.25-2
The Safety-Critical Systems Club Newsletter, Volume 25, Number 2

Sep 2015

[SCSC-145] Safety Systems vol.25-1
The Safety-Critical Systems Club Newsletter, Volume 25, Number 1

May 2015

[SCSC-147] Safety Systems vol.24-3
The Safety-Critical Systems Club Newsletter, Volume 24, Number 3

Feb 2015

[SCSC-129] Engineering Systems for Safety
Proceedings of the Twenty-third Safety-Critical Systems Symposium, Bristol, UK.

Jan 2015

[SCSC-128] Data Safety (Version 1.2)
by the SCSC Data Safety Initiative Working Group [DSIWG]

Jan 2015

[SCSC-146] Safety Systems vol.24-2
The Safety-Critical Systems Club Newsletter, Volume 24, Number 2

Sep 2014

[SCSC-139] Safety Systems vol.24-1
The Safety-Critical Systems Club Newsletter, Volume 24, Number 1

May 2014

[SCSC-134] Safety Systems vol.23-3
The Safety-Critical Systems Club Newsletter, Volume 23, Number 2

Feb 2014

[SCSC-127] Data Safety Guidance (Version 1.0)
by the SCSC Data Safety Initiative Working Group [DSIWG]
This resource is superseded by: [SCSC-127E]

Feb 2014

[SCSC-126] Addressing Systems Safety Challenges
Proceedings of the Twenty-second Safety-Critical Systems Symposium, Brighton, UK.

Jan 2014

[SCSC-132] Safety Systems vol.23-2
The Safety-Critical Systems Club Newsletter, Volume 23, Number 2

Sep 2013

[SCSC-125] Safety Systems vol.23-1
The Safety-Critical Systems Club Newsletter, Volume 23, Number 1

May 2013

[SCSC-124] Safety Systems vol.22-3
The Safety-Critical Systems Club Newsletter, Volume 22, Number 3

Feb 2013

[SCSC-119] Assuring the Safety of Systems
Proceedings of the Twenty-first Safety-Critical Systems Symposium, Bristol, UK.

Jan 2013

[SCSC-123] Safety Systems vol.22-2
The Safety-Critical Systems Club Newsletter, Volume 22, Number 2

Sep 2012

[SCSC-122] Safety Systems vol.22-1
The Safety-Critical Systems Club Newsletter, Volume 22, Number 1

May 2012

[SCSC-121] Safety Systems vol.21-3
The Safety-Critical Systems Club Newsletter, Volume 21, Number 3

Feb 2012

[SCSC-116] Achieving Systems Safety
Proceedings of the Twentieth Safety-critical Systems Symposium, Bristol, UK.

Jan 2012

[SCSC-120] Safety Systems vol.21-2
The Safety-Critical Systems Club Newsletter, Volume 21, Number 2

Nov 2011

[SCSC-141] GSN Standard (Version 1)
Version 1 of the Goal Structuring Notation Community standard
This resource is superseded by: [SCSC-141B]

Sep 2011

[SCSC-118] Safety Systems vol.21-1
The Safety-Critical Systems Club Newsletter, Volume 21, Number 1

May 2011

[SCSC-117] Safety Systems vol.20-3
The Safety-Critical Systems Club Newsletter, Volume 20, Number 3

Feb 2011

[SCSC-109] Advances in Systems Safety
Proceedings of the Nineteenth Safety-critical Systems Symposium, Southampton, UK.

Jan 2011

[SCSC-115] Safety Systems vol.20-2
The Safety-Critical Systems Club Newsletter, Volume 20, Number 2

Sep 2010

[SCSC-114] Safety Systems vol.20-1
The Safety-Critical Systems Club Newsletter, Volume 20, Number 1

May 2010

[SCSC-112] Safety Systems vol.19-3
The Safety-Critical Systems Club Newsletter, Volume 19, Number 3

Mar 2010

[SCSC-113] Alarp explored

Feb 2010

[SCSC-107] Making Systems Safer
Proceedings of the Eighteenth Safety-critical Systems Symposium, Bristol, UK.

Jan 2010

[SCSC-111] Safety Systems vol.19-2
The Safety-Critical Systems Club Newsletter, Volume 19, Number 2

Sep 2009

[SCSC-110] Safety Systems vol.19-1
The Safety-Critical Systems Club Newsletter, Volume 19, Number 1

May 2009

[SCSC-108] Safety Systems vol.18-3
The Safety-Critical Systems Club Newsletter, Volume 18, Number 3

Feb 2009

[SCSC-102] Safety-Critical Systems: Problems, Processes and Practices
Proceedings of the Seventeenth Safety-critical Systems Symposium, Brighton, UK.

Jan 2009

[SCSC-106] Safety Systems vol.18-2
The Safety-Critical Systems Club Newsletter, Volume 18, Number 2

Sep 2008

[SCSC-105] Safety Systems vol.18-1
The Safety-Critical Systems Club Newsletter, Volume 18, Number 1

May 2008

[SCSC-104] Safety Systems vol.17-3
The Safety-Critical Systems Club Newsletter, Volume 17, Number 3

Feb 2008

[SCSC-1] Improvements in System Safety
Proceedings of the Sixteenth Safety-critical Systems Symposium, Bristol, UK.

Jan 2008

[SCSC-103] Safety Systems vol.17-2
The Safety-Critical Systems Club Newsletter, Volume 17, Number 2

Sep 2007

[SCSC-69] Safety Systems vol.17-1
The Safety-Critical Systems Club Newsletter, Volume 17, Number 1

May 2007

[SCSC-70] Safety Systems vol.16-3
The Safety-Critical Systems Club Newsletter, Volume 16, Number 3

Feb 2007

[SCSC-5] The Safety of Systems
Proceedings of the Fifteenth Safety-critical Systems Symposium, Bristol, UK

Jan 2007

[SCSC-71] Safety Systems vol.16-2
The Safety-Critical Systems Club Newsletter, Volume 16, Number 2

Sep 2006

[SCSC-72] Safety Systems vol.16-1
The Safety-Critical Systems Club Newsletter, Volume 16, Number 1

May 2006

[SCSC-73] Safety Systems vol.15-3
The Safety-Critical Systems Club Newsletter, Volume 15, Number 3

Feb 2006

[SCSC-6] Developments in Risk-based Approaches to Safety
Proceedings of the Fourteenth Safety-citical Systems Symposium, Bristol, UK

Jan 2006

[SCSC-74] Safety Systems vol.15-2
The Safety-Critical Systems Club Newsletter, Volume 15, Number 2

Sep 2005

[SCSC-75] Safety Systems vol.15-1
The Safety-Critical Systems Club Newsletter, Volume 15, Number 1

May 2005

[SCSC-76] Safety Systems vol.14-3
The Safety-Critical Systems Club Newsletter, Volume 14, Number 3

Feb 2005

[SCSC-7] Constituents of Modern System-safety Thinking
Proceedings of the Thirteenth Safety-critical Systems Symposium, Southampton, UK

Jan 2005

[SCSC-77] Safety Systems vol.14-2
The Safety-Critical Systems Club Newsletter, Volume 14, Number 2

Sep 2004

[SCSC-78] Safety Systems vol.14-1
The Safety-Critical Systems Club Newsletter, Volume 14, Number 1

May 2004

[SCSC-79] Safety Systems vol.13-3
The Safety-Critical Systems Club Newsletter, Volume 13, Number 3

Feb 2004

[SCSC-8] Practical Elements of Safety
Proceedings of the Twelfth Safety-critical Systems Symposium, Birmingham, UK

Jan 2004

[SCSC-80] Safety Systems vol.13-2
The Safety-Critical Systems Club Newsletter, Volume 13, Number 2

Sep 2003

[SCSC-81] Safety Systems vol.13-1
The Safety-Critical Systems Club Newsletter, Volume 13, Number 1

May 2003

[SCSC-82] Safety Systems vol.12-3
The Safety-Critical Systems Club Newsletter, Volume 12, Number 3

Feb 2003

[SCSC-9] Current Issues in Safety-Critical Systems
Proceedings of the Eleventh Safety-critical Systems Symposium, Bristol, UK

Jan 2003

[SCSC-83] Safety Systems vol.12-2
The Safety-Critical Systems Club Newsletter, Volume 12, Number 2

Sep 2002

[SCSC-84] Safety Systems vol.12-1
The Safety-Critical Systems Club Newsletter, Volume 12, Number 1

May 2002

[SCSC-85] Safety Systems vol.11-3
The Safety-Critical Systems Club Newsletter, Volume 11, Number 3

Feb 2002

[SCSC-10] Components of System Safety
Proceedings of the Tenth Safety-critical Systems Symposium, Southampton, UK

Jan 2002

[SCSC-86] Safety Systems vol.11-2
The Safety-Critical Systems Club Newsletter, Volume 11, Number 2

Sep 2001

[SCSC-87] Safety Systems vol.11-1
The Safety-Critical Systems Club Newsletter, Volume 11, Number 1

May 2001

[SCSC-88] Safety Systems vol.10-3
The Safety-Critical Systems Club Newsletter, Volume 10, Number 3

Feb 2001

[SCSC-11] Aspects of Safety Management
Proceedings of the Ninth Safety-critical Systems Symposium, Bristol, UK

Jan 2001

[SCSC-89] Safety Systems vol.10-2
The Safety-Critical Systems Club Newsletter, Volume 10, Number 2

Sep 2000

[SCSC-90] Safety Systems vol.10-1
The Safety-Critical Systems Club Newsletter, Volume 10, Number 1

May 2000

[SCSC-91] Safety Systems vol.9-3
The Safety-Critical Systems Club Newsletter, Volume 9, Number 3

Feb 2000

[SCSC-12] Lessons in System Safety
Proceedings of the Eighth Safety-critical Systems Symposium, Southampton, UK

Jan 2000

[SCSC-92] Safety Systems vol.9-2
The Safety-Critical Systems Club Newsletter, Volume 9, Number 2

Dec 1999

[SCSC-101] Software Safety - An Insider's View of the Safety-Critical Systems Club

Sep 1999

[SCSC-93] Safety Systems vol.9-1
The Safety-Critical Systems Club Newsletter, Volume 9, Number 1

May 1999

[SCSC-94] Safety Systems vol.8-3
The Safety-Critical Systems Club Newsletter, Volume 8, Number 3

Feb 1999

[SCSC-13] Towards System Safety
Proceedings of the Seventh Safety-critical Systems Symposium, Huntingdon, UK

Jan 1999

[SCSC-95] Safety Systems vol.8-2
The Safety-Critical Systems Club Newsletter, Volume 8, Number 2

Sep 1998

[SCSC-96] Safety Systems vol.8-1
The Safety-Critical Systems Club Newsletter, Volume 8, Number 1

May 1998

[SCSC-97] Safety Systems vol.7-3
The Safety-Critical Systems Club Newsletter, Volume 7, Number 3

Feb 1998

[SCSC-14] Industrial Perspectives of Safety-Critical Systems
Proceedings of the Sixth Safety-critical Systems Symposium, Birmingham, UK

Jan 1998

[SCSC-98] Safety Systems vol.7-2
The Safety-Critical Systems Club Newsletter, Volume 7, Number 2

Jun 1997

[SCSC-100] Life Cycle Management for Dependability

Feb 1997

[SCSC-15] Safer Systems
Proceedings of the Fifth Safety-critical Systems Symposium, Brighton, UK

Feb 1996

[SCSC-16] Safety-Critical Systems: The Convergence of High Tech and Human Factors
Proceedings of the Fourth Safety-critical Systems Symposium, Leeds, UK

Feb 1995

[SCSC-17] Achievement and Assurance of Safety
Proceedings of the Third Safety-critical Systems Symposium, Brighton, UK

Feb 1994

[SCSC-18] Technology and Assessment of Safety-Critical Systems
Proceedings of the Second Safety-critical Systems Symposium, Birmingham, UK

Feb 1993

[SCSC-19] Directions in Safety-critical Systems
Proceedings of the Safety-critical Systems Symposium, Bristol, UK

Jan 1993

[SCSC-20] Safety-Critical Systems
Current issues, techniques and standards

Sep 1991

[SCSC-99] Safety Systems vol.1-1
The Safety-Critical Systems Club Newsletter, Volume 1, Number 1

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