- More than likely you will have to remove concrete
coating from the pipeline. For some of you that don't
know why concrete, it is used to for weight to help
keep the line from floating.
- You will have to determine if this going to be a
weld on or bolt on and if a weld on what type of
welding will be used. A wet weld or a dry weld.
- If going to be a dry weld you need a containment
area to be able to fit on to the pipeline so air can
be pumped in to blow water out.More than likely the
pipeline is covered with silt, sand, mud, in most case
at least 3 ft. of cover, may be a lot more, depending
on who and what equipment layed the line to start
with, and why type of area is this in. If off of the
Mississippi River, high silt area. You may have 10' to
20'of silt to remove just for access. And when you do
that you have to remove twice the area to the sides so
you don't have a cave in. So you have to jet out a
hole to get access to pipeline.Divers install
containment. You will need a Diver to go down get
into containment propares area for hot tap, installes
hot tap,Get diver/ welder to go down weld hot tap in
place. mag particle will have to be done to insure no
cracks.
- You will need a hot tap cutting machine to proform
the next step Well you need to go to TD Williams.com
or International Piping Services Co. (IPSCO)hottap.com
and they can give you a good look at what you have may
have to do on this type of project.
This will end chapter 1 on Hot Taps for today, I have
to head to work. But by all mean give the 2 web site a
go I am sure you can find more info on the subject.
Try a good search engine (Hot Tap) and it will lead
you to all kinds of info. Happy surfing.
--- "Macharla, Hari" <HMacharla@mcdermott.com> wrote:
> Karl,
> Why don't you explain the procedure...at least
> additional steps involved
> when compared to normal hot tapping. This will help
> the team, rahter than
> the logistic steps.
> Hari.
>
> -----Original Message-----
> From: Karl Viator [mailto:kdviator@yahoo.com]
> Sent: Monday, October 01, 2001 4:14 PM
> To: <a href="/group/PipingDesign/post?postID=Cma_S2TmAriThtvdYZbVeKkKPNdhV4WK1IZusSmSdWuYzi-hcECRhcVRS4mhFgQtnWwTSWHI87PBtSIy7_Ag6L_-yrWamxo">PipingDesign@yahoogroups.com</a>
> Subject: Re: [PipingDesign]
>
>
> Well submerge enviroment, that is another story. You
> will need the help of a good dive team for sure. You
> will need to contact a good diving contractor. How
> deep is the hot tap?
> What type of fluid is in pipeline, and what company
> is
> this for. The Company may have a spec. on this
> application you will have to follow. You diffently
> need to talk to someone with a lot of experience
> with
> this. MMS has to approve, the enviroment is in this
> also, so you need to cross all the T's and Dot all
> your I.
> The few I did were above water.
> You may want to try calling Global Industries, in
> New
> Iberia, La for some good advise, or help on this. I
> have that number somewhere. (337-367-3483)
> I think they make a bolt on type for this type of
> application also.
> Good Luck
> Karl Viator
> --- danny garrido <dannycgarrido@yahoo.com> wrote:
> > Karl,
> > Can you please share the group your procedure of
> hot
> > tapping the 24"diameter pipe in a submerged
> > environment.
> > Thank you.
> > Danny
> > _______________________________________________
> > --- Karl Viator <kdviator@yahoo.com> wrote:
> > > Yes I have done a few. What do you need to know
> > > --- Rendolf Michel Tatuhey
> > > <r.tatuhey@ptsofresid.com>
> > > wrote:
> > > > Does anybody know how to perform HOT TAP for
> 24"
> > > > pipe on Offhore
> > > > platform ?
> > > > Thank you.
> > > >
> > >
> > >
> > >
> __________________________________________________
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> >
> > =====
> > Danny C. Garrido
> >
> > __________________________________________________
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>
>
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Received on Tue Oct 02 06:58:00 2001