[PSUBS-MAILIST] pressure test

Wed Oct 23 09:56:30 EDT 2013

What are the dimensions? C-FER Technologies in Edmonton has a test chamber 4' diameter by 35' long. They proof test some of the AUV hulls for ISE there.

Alec Smyth <alecsmyth at gmail.com> wrote:
>Hi Hank,
>
>I asked at Carderock over a decade ago and was told the cost would
>depend
>on setup time, which varies depending on how much instrumentation you
>want
>during the test, but that a typical figure was around $27K. Waaaay
>beyond
>my budget. Dale Heinzing tested Snoopy somewhere on the West side of
>Canada
>at a lumber yard. Snoopy went in the tank alongside the lumber and must
>have been pretty well disinfected, but the scary bit was that they
>released
>the pressure almost instantaneously, with a bang. That test was  to
>only
>400' so not really sufficient for a Nekton, but it might still be of
>interest since I think it's relatively close to you and probably was
>inexpensive.
>
>
>Best,
>
>Alec
>
>
>On Wed, Oct 23, 2013 at 8:33 AM, Joe Perkel <josephperkel at yahoo.com>
>wrote:
>
>> Hank,
>>
>> There are two in the states however, the one on the west coast has a
>72"
>> limit if I recall correctly.
>> The other on the east coast, is the same one used for the k-600 and
>Alvin.
>>
>> A contract and waiver are required, let us know the cost if you do
>it.
>> Go to the WHOI website for info
>>
>>
>> Joe
>>
>>   *From:* hank pronk <hanker_20032000 at yahoo.ca>
>>
>> *To:* Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> *Sent:* Wednesday, October 23, 2013 8:10 AM
>> *Subject:* Re: [PSUBS-MAILIST] pressure test
>>
>>   Does anyone know if the is a pressure chamber large enough to test 
>my
>> Nekton submarine in the Pacific North West.
>> Hank
>>
>>   *From:* Phil Nuytten <phil at philnuytten.com>
>> *To:* Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> *Sent:* Tuesday, October 15, 2013 10:19:38 PM
>> *Subject:* Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>>
>>   Hi, Hugh
>> As Vance says, HY80 is somewhat challenging to weld – err, actually,
>> that’s an understatement. We had to work with our fabricators to come
>up
>> with a whole weld procedure to satisfy our classing agency. If you
>decide
>> to go this route, let me know and we will share that procedure.
>> Phil
>>
>>  *From:* vbra676539 at aol.com
>> *Sent:* Tuesday, October 22, 2013 7:18 PM
>> *To:* personal_submersibles at psubs.org
>> *Subject:* Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>>
>>  I think it is somewhat demanding to weld, and expensive by
>comparison,
>> of course. That said, there is a mountain of data available, as the
>> pressure hulls of most modern US Navy submarines are built out of it.
>> Vance
>>  -----Original Message-----
>> From: Hugh Fulton <hc.fulton at gmail.com>
>> To: 'Personal Submersibles General Discussion' <
>> personal_submersibles at psubs.org>
>> Sent: Tue, Oct 22, 2013 10:15 pm
>> Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>>
>>   Vance,  Yep that sounds about right.
>> Are there any nasties to using it?
>> Chs Hugh
>>
>>
>>
>>  *From:* Personal_Submersibles [
>>
>mailto:personal_submersibles-bounces at psubs.org?<personal_submersibles-bounces at psubs.org?>]
>> *On Behalf Of *Vance Bradley
>> *Sent:* Wednesday, 23 October 2013 1:37 p.m.
>> *To:* Personal Submersibles General Discussion
>> *Subject:* Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>>
>>  Hugh,
>>  HY-80 used to maintain the standard dimensions of a DW2000 with 50%
>> depth increase.
>>  Vance
>>
>> Sent from my iPhone
>>
>> On Oct 22, 2013, at 8:13 PM, "Hugh Fulton" <hc.fulton at gmail.com>
>wrote:
>>
>>  Vance,  I am sure I saw recently from Phil that he was using HY 80
>but I
>> don’t know what on.  I did a calc on mine and I got a lot deeper
>using the
>> HY 80 specs over the Grade 70.
>> Hugh
>>
>>  *From:* Personal_Submersibles [
>>
>mailto:personal_submersibles-bounces at psubs.org<personal_submersibles-bounces at psubs.org>]
>> *On Behalf Of *vbra676539 at aol.com
>> *Sent:* Wednesday, 23 October 2013 11:55 a.m.
>> *To:* personal_submersibles at psubs.org
>> *Subject:* Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>>
>>  One other thing comes to mind on this. Phil uses A516Gr70 in the
>> DW2000s. It occurs to me that if there was a demonstrable benefit to
>A537,
>> he would have used taken advantage of it. And he didn't, apparently.
>> Interesting. Don't know why, though. Maybe it has something to do
>with
>> welding stainless inserts in and the heat treatment thereof. Just a
>guess.
>>  Vance
>>  -----Original Message-----
>> From: JimToddPsub <JimToddPsub at aol.com>
>> To: personal_submersibles <personal_submersibles at psubs.org>
>> Sent: Tue, Oct 22, 2013 6:42 pm
>> Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>>   Vance,
>>  From Leeco Steel's website:
>>
>>  A537 plate steel is heat-treated. As a result, it displays greater
>yield
>> and tensile strength than the more standard A516 grades. *A537 steel
>plate
>> * is ideal for both in boilers and pressure vessels, and is used in
>the
>> oil, gas and petrochemical industry.
>>
>>  Nice to see it provides at least a brief comparison to A516.  I'm
>sure
>> there are more variables to consider including cost.
>>
>>  Jim
>>
>>  In a message dated 10/22/2013 5:23:43 P.M. Central Daylight Time,
>> vbra676539 at aol.com writes:
>>
>>  Jim,
>>  A537 was used extensively, as well, especially in the early boats
>that
>> Perry built. Maybe you can figure it out. It seems that I recall
>being told
>> that it was somewhat harder to weld but had better
>> cold-water-under-pressure properties. Maybe Dr. Nuytten would weigh
>in on
>> this, assuming he isn't up to his ass in DW3000 alligators this week
>(which
>> I suspect he is).
>>  Vance
>>  -----Original Message-----
>> From: JimToddPsub <JimToddPsub at aol.com>
>> To: personal_submersibles <personal_submersibles at psubs.org>
>> Sent: Tue, Oct 22, 2013 4:18 pm
>> Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>>   Greg,
>>  I should have clarified that.  It was a cut-and-paste from a web
>site.
>> I'm more of a librarian in that I save info in an organized fashion
>when I
>> come across it so I'll have it available later when the need arises. 
>That
>> was the case in this instance.
>>  Jim
>>
>>  In a message dated 10/22/2013 1:25:34 P.M. Central Daylight Time,
>> jgcottrell2002 at yahoo.com writes:
>>
>>  Thanks for the info, Jim. It's good to know there is some one in the
>> group that is also in the steel industry.
>>
>>  Greg
>>
>>   *From:* "JimToddPsub at aol.com" <JimToddPsub at aol.com>
>> *To:* personal_submersibles at psubs.org
>> *Sent:* Tuesday, October 22, 2013 12:59 PM
>> *Subject:* Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>>
>>   Maybe more detail than you really want to know, but here goes:
>>
>>  ASTM A 516 or ASME SA 516 grade is one of the most popular steel
>grades
>> in market .
>>
>> It is primarily intended for use in welded pressure vessels where
>notch
>> toughness is important. It comes in four grades 55, 60, 65 & 70. At
>Oakley
>> Steel we mainly sell 516 gr 60 and 516 gr 70. These grades cover a
>range of
>> tensile strengths from 55 - 90 MPa and this versatility explains much
>of
>> the specifications popularity.
>>
>> For plates thinner than 40mm we normally supply them as rolled.
>Plates
>> supplied above 40mm thick are normalised.
>>
>> For A 516 grade 70, which is one of our most popular steels, the ASME
>> standard composition is as follows (dependent on grade):
>>
>> Carbon 0.27 - 0.31%
>> Manganese 0.79 - 1.3%
>> Phosphorous 0.035% max
>> Sulphur 0.035% max
>> Silicon 0.13 - 0.45%
>>
>>  In a message dated 10/22/2013 11:53:12 A.M. Central Daylight Time,
>> jonw at psubs.org writes:
>>
>>
>> Generally, A516gr70 suffices for personal or recreational submarines.
>>
>> Jon
>>
>>
>> On 10/22/2013 12:45 PM, Christopher Cave wrote:
>>
>>   Hello,
>>
>>  What is the best steel to use for a submarine hull. Someone
>mentioned
>> marine steel such as 316,316L or 317. Any suggestions or a website I
>can
>> review.
>>
>>  Thanks,
>>  Chris
>>
>>  *Christopher Cave
>> *
>> *christophercave at yahoo.com*
>>
>>
>>
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-- 
Sent from Kaiten Mail. Please excuse my brevity.
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