[PSUBS-MAILIST] G.L. Submersible Classification

[Alan James]

Thanks Phil,
that's a good introduction to this topic.
From what I've read so far, supplying the documentation they require
seems harder than building the submarine.
Alan


________________________________
 From: Phil Nuytten <phil at philnuytten.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Tuesday, November 19, 2013 5:42 PM
Subject: Re: [PSUBS-MAILIST] G.L. Submersible Classification
 


All:
Nuytco has had experience classing with most of the majors – Lloyds 
Register, Germanischer Lloyds, American Bureau of Shipping,  Det Norske 
Veritas (now combined with GL) and Cayman Islands register of Shipping. All of 
these classifying agencies use as their reference “Pressure Vessels for Human 
Occupancy – section 8”, commonly referred to as ‘PVHO8’. Several of these 
agencies have additional requirements but in the main they stick to PVHO8. The 
choice of who you go with is usually governed by: basic prices for initial ‘Plan 
Approval’ and hourly rates for witnessing tests, materials, etc., the proximity 
of the surveyors to your place of build (since you have to cover all costs of 
the surveyor if they are not in your area) and finally, the location of the 
office who will make the final decision relative to your subs 
classification  -relative to where their local representatives offices are 
located. The good news is that almost all of these agencies accept each others 
witnessing and certs. 
Be prepared, though, it is expensive to class – particularly if you are 
only building one sub. In the case of a manufacturer like Nuytco, we can spread 
our costs over a number of subs by getting ‘type approval’ so much of the 
initial stuff does not have to redone with each sub, as long as you don’t change 
the design.
Phil 
From: Alan James 
Sent: Monday, November 25, 2013 7:52 PM
To: Personal Submersibles General 
Discussion 
Subject: Re: [PSUBS-MAILIST] G.L. Submersible 
Classification
  
Hi Jon,
I 
have very little idea as to what requirements there are in both,
other 
than what I've heard over the years on this site & snippets 
elsewhere.
They 
could be very close, I don't know.
I intend to read through ABS as well but 
for some reason I've started on G.L..

I 
doubt there will be an issue of competition here as I can't see too many 
Psubbers 
wanting 
to spend the money to certify. However from a safety standpoint there 
may
be 
some interest. And either group would be a good guideline for this.
I 
could start with ABS, but members may be more familiar with them than G.L., 
&
able 
to comment on discrepancies. 
I 
think Jim & David were interested in following classification 
guidelines.
How 
far are you two down the track with this? And would it be preferred if we 
went
over 
ABS instead???
Regards 
Alan
 

________________________________
 From: Jon 
Wallace <jonw at psubs.org>
To: Personal Submersibles General 
Discussion <personal_submersibles at psubs.org> 
Sent: Tuesday, November 26, 2013 3:37 
PM
Subject: Re: [PSUBS-MAILIST] 
G.L. Submersible Classification

 

I don't have any issues 
with it as long as the discussion remains objective.  I have been reminded 
that we have a working relationship with ABS that we've worked hard to build up 
over the years and don't want to jeopardize.  However, we would certainly 
entertain and approve of a working relationship with GL as well, and any others 
that might want a working relationship with PSUBS.  I would also note that 
we do have links to GL on our website right now at WWW.PSUBS.ORG -> Resources & 
Reference -> Guidelines & Standards -> Germanischer Lloyd AG 
(hopefully still current).

I've never personally 
looked at certification as "us vs them".  Kittredge used both ABS and 
Lloyd's, as has Nuytco I believe.  In fact, Kittredge also used Nippon 
once.  I believe the choice usually comes down to financials rather than 
one set of rules being better than another.

If you 
think there's a propensity for the discussion to get critical of a particular 
certifying authority let's have it on the member-only list instead of the public 
list.

Jon


On 11/25/2013 6:33 PM, Alan James wrote:

Hi,
>I've  just started going through the Germanic LLoyds rules for classification
>of  manned submersibles, with view to building as close as possible to them.
>http://www.gl-group.com/pdf/  GL_Rules_MannedSubmersibles. pdf
>
>Is  anyone interested in me summarizing the rules as I go along?
>There  are a few people in the group with GL classification experience who
>may  want to chip in & keep an eye on what I'm saying in case my  understanding
>is  not quite right. Also any variations from ABS that people pick up on
>would  be interesting to know.
>I am hopeful this will generate discussion in some  areas.
>
>Jon if you don't like this idea email me
>Alan
>
>
>_______________________________________________
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