[TowerTalk] In defense of crankups

[barry kirkwood]

>Date: Tue, 18 Apr 2000 12:50:42
>To: "Al Williams" <alwilliams@olywa.net>
>From: barry kirkwood <bjk@ihug.co.nz>
>Subject: Re: [TowerTalk] In defense of crankups
>
>At 05:17 PM 04/17/2000 -0700, you wrote:
>>
>>It seems to me that this idea is one for the ARRL to sponsor?
>>
>>k7puc
>
>Amen. 
>In another life I taught human factors in accidents.
>Collecting stories the first and most important part in improving the system.
>Then collating and disseminating info.
>Contemporary opinion is that all accidents actually multicausal, lemma is
that this implies that there are always multiple interventions possible to
prevent or minimise.
>Other contemporary view is that human behaviour controlled by perceived
risk of activity. Hence info on actual risks necessary to improve safety.
>Unless tower manufacturers systematically collate failure info their advice
may not be in line with the way people in the field actually use the
equipment. Experts tend to take safe practices for granted, are able to
understand concepts like breaking strain, yield strength etc.
>73
>Barry ZL1DD
>
end
Barry (Baz) Kirkwood PhD ZL1DD ex ZL1BN, ZL4OK etc
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