[PSUBS-MAILIST] hemi heads

Sat Nov 7 12:17:21 EST 2015

For a pressure hull?  100% radiographic examination (x-ray) on all butt joints, 100% ultrasonic examination on all joints other than butt joints, not less than 72 hours after welding is complete.

Surface inspection methods (liquid penetrant, magnetic particle or eddy current) at your discretion.

Criteria can be found in the ABS Guide for Nondestructive Inspection of Hull Welds (NDI Guide).

Sean

On November 7, 2015 8:57:58 AM MST, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Sean,I am looking for a company in Calgary to do NDT of welds on my
>deep diver and have discovered there are many different tests
> available.  What tests should I be looking for?Hank 
>
>
>On Friday, November 6, 2015 6:51 PM, Sean T. Stevenson via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>   
>
>My thoughts exactly. Thankfully, I've managed to avoid the worst
>effects of the downturn in oil and gas because our clients are
>worldwide. I'm doing some collapse testing right now on some large
>samples for an Alaskan LNG pipeline.  Pretty impressive stuff to see 2"
>wall pipe bend like rubber in the big machines.Sean
>
>
>On November 6, 2015 6:36:00 PM MST, hank pronk via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Well, now is the perfect time to  bust out the cheque book because
>steel is as low as it is going to be according to EE  and they are
>pretty dead over there.Hank 
>
>
>On Friday, November 6, 2015 5:41 PM, Sean T. Stevenson via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>   
>
>No diesel. It will not operate independent of support capable of
>charging the batteries at the surface, though this may be accomplished
>by a portable generator if need be.It may be left in the water (towed,
>secured alongside, loaded and offloaded etc.) for the duration of an
>expedition, but is not intended for long-term submergence, such as
>seasonal operation.  Crane, A-frame or boat lift retrieval will be
>employed for storage and necessary maintenance.Sean
>
>
>On November 6, 2015 5:16:12 PM MST, hank pronk via
>Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Do you intend on leaving the sub in the water full time (seasonal)
> Alsso sounds like it could have a diesel engine.Hank 
>
>
>On Friday, November 6, 2015 5:02 PM, Sean T. Stevenson via
>Personal_Submersibles <personal_submersibles at psubs.org>wrote:
>   
>
>Ambitious p! roject,subject to change as funding dictates. 4 person
>lockout submersible (pilot, supervisor, 2 divers). Large for a PSub,
>but sized for road / intermodal transport. Not ramp launchable.
>Operating depth of 600m, safety factor TBD. 48 hour mission, 72 hour
>reserve. Built to full ABS / GL compliance with documented tests (NDT,
>strain gauging, material and proof testing) to enable classification by
>engaging a surveyor in the future, but not classed at this time. When
>construction is completed, it will live in Vancouver - my second
>(first?) home.
>
>Sean
>
>
>
>On November 6, 2015 3:06:12 PM MST, hank pronk via
>Personal_Submersibles <personal_submersibles at psubs.org> w! rote:
>>Hi Sean,We have it all sorted! out,and they are going forward, my
>>minimum thickness should be .875 not bad!  
>>As for your project, are you releasing clues?     Hmmm  that means two
>>subs only 5 hr apart, nice!  Hank 
>
>
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