nanog mailing list archives
Human Factors and Accident reduction/mitigation
From: Owen DeLong <owen () delong com>
Date: Thu, 5 Nov 2009 06:20:25 -0800
Regarding Reliability and Availability: 1. Reliability and Availability are related, but not identical.2. Systemic availability is, generally, the result of the combination of component reliability, component redundancy, policies, procedures, and discipline. 3. Policies, procedures, and discipline help to reduce and/or mitigate accidents.
In terms of accidents and human factors:1. Accidents cannot be eliminated, but, with proper procedures, policies, and
disciplines, most can be eliminated or prevented.2. Most accidents which cannot be eliminated can be mitigated, but, doing so often comes at a cost which exceeds the product of benefit and likelihood.
We could learn a lot about this from Aviation. Nowhere in human history has more research, care, training, and discipline been applied to accident prevention,
mitigation, and analysis as in aviation. A few examples:NTSB investigations of EVERY US aircraft accident and published findings.
NASA Aviation Safety Reporting SystemWhen NTSB finds a design flaw in an aircraft at fault for an accident there is a process by which that error gets translated into an Airworthiness Directive forcing aircraft owners to have the flaw corrected to continue operating the
aircraft. When NTSB finds a training discrepancy, procedural problem, etc., thereis a process by which those discrepancies are addressed.through training,
retraining, etc.For example, after a couple of accidents related to microbursts, NTSB and
FAA determined that all pilots should undergo training on windshear and windshear avoidance, including microburts. etc. (There are many more examples) Owen
Current thread:
- RE: HE.net, Fremont-2 outage?, (continued)
- RE: HE.net, Fremont-2 outage? Alex Rubenstein (Nov 04)
- Re: HE.net, Fremont-2 outage? Joe Greco (Nov 04)
- Re: HE.net, Fremont-2 outage? Raphael Carrier (Nov 04)
- Re: HE.net, Fremont-2 outage? Scott Howard (Nov 04)
- Re: HE.net, Fremont-2 outage? Joe Greco (Nov 04)
- Re: HE.net, Fremont-2 outage? Scott Howard (Nov 04)
- Re: HE.net, Fremont-2 outage? Owen DeLong (Nov 04)
- RE: HE.net, Fremont-2 outage? Bryan King (Nov 04)
- Re: HE.net, Fremont-2 outage? Robert Mathews (OSIA) (Nov 04)
- Re: HE.net, Fremont-2 outage? Joe Greco (Nov 05)
- Human Factors and Accident reduction/mitigation Owen DeLong (Nov 05)
- Re: Human Factors and Accident reduction/mitigation Robert Boyle (Nov 05)
- Re: Human Factors and Accident reduction/mitigation Michael Peddemors (Nov 05)
- Re: Human Factors and Accident reduction/mitigation Owen DeLong (Nov 05)
- Re: Human Factors and Accident reduction/mitigation JC Dill (Nov 06)
- Re: Human Factors and Accident reduction/mitigation Owen DeLong (Nov 07)
- Re: Human Factors and Accident reduction/mitigation JC Dill (Nov 07)
- Re: Human Factors and Accident reduction/mitigation Anton Kapela (Nov 08)
- Re: Human Factors and Accident reduction/mitigation JC Dill (Nov 08)
- Re: HE.net, Fremont-2 outage? Seth Mattinen (Nov 04)
- Re: HE.net, Fremont-2 outage? Valdis . Kletnieks (Nov 04)