Re: [SystemSafety] Research topics

From: SPRIGGS, John J < >
Date: Fri, 26 Jul 2013 09:02:55 +0000


One of the main obstacles in getting the data from real systems in the field is that the operator, who observes and reports an incident, will not know whether the effect they see is anything to do with software. Indeed, if they do know any detail of the implementation, it could hinder the incident investigation rather than help. The investigator wants to know what actually happened, not be told of theories about "circumbobulators having flange misalignment", or whatever. Another real-world effect is that an incident probably will not be reported if there is an established work-around. Management may think that their engineered system is wonderfully reliable when, in reality, they are employing a bunch of heroes who keep the Customers happy despite repeated system drop-outs... ...and, no doubt, because the system is so reliable, they are planning to "cut costs" by getting rid of the more-experienced operators.

John
Usual caveat about this being my opinion and not those of my employers, Customers or Clients. Sent: 26 July 2013 09:44
To: systemsafety_at_xxxxxx Subject: Re: [SystemSafety] Research topics

Hi,
One suggestion would be to look at the data-gathering in the field for actual reliability data for safety-critical SW. it seems there are many obstacles to get good (any?) data. And the research would lead to actually asking what are the right properties in the field that are measurable. One particular area of concern is the lack of data on incidents (minor failures in SW that are not in themselves critical but are advance warning and predictors of the presence of major defects). I suppose the research would look at technical, organizational and legal aspects, all of which might be interesting to a PHD student (and for his funding?).

Best regards,
Thierry Coq
DNV



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systemsafety_at_xxxxxx Received on Fri Jul 26 2013 - 11:03:06 CEST

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