Re: [PSUBS-MAILIST] certification question

["Sean T. Stevenson" <cast55@telus.net>]

Emile - if you are talking about ABS certification, the process is quite 
clearly outlined in the the ABS publication "Rules for Building and Classing 
Underwater Vehicles, Systems and Hyperbaric Facilities".  Essentially, it 
entails an ongoing audit throughout the design and manufacture of the vessel.  
All ABS rules must be complied with, and you work with an ABS inspector at 
various stages - in design, exhaustive engineering drawings are required, as 
well as finite element analysis of some structures.  In manufacture, all 
welds must be performed by a certified welder, and be full-penetration in 
accordance with the rules for constructing steel vessels, and all hull welds 
must be 100% non-destructively tested - an expensive proposition in of 
itself.  The viewports must be certified (batch tested by the manufacturer, 
certified as to annealing treatment and specifically marked).  During 
testing, the hull must be strain gauged, and certain actions are required to 
certify the vessel to its design depth in the presence of the inspector.  I 
presume that you would need to cover all of the inspector's expenses as well.

-Sean


On October 29, 2007 05:00:23 Emile van Essen wrote:
> Hi.
>
>
>
> Does somebody have information or experience with certifying (for passenger
> trips) a small submersible??
>
>
>
> -how much did it cost ??
>
> -how much effort?
>
> -afterwards or parallel to building process.
>
>
>
> Thanks in advance.
>
>
>
> Emile van Essen
>
> www.AiResearch.nl
>
> Hobbemalaan 54
>
> 1816 GE Alkmaar
>
> 0031-72-5122401
>
> mob.  06-44500720





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