[MW:8026] Internal Lining

Hi Every on

Can anyone send me specification for internal epoxy lining of water pipeline (corrosion protection).

Regards


On Wed, 03 Nov 2010 10:44:20 +0530 wrote
>
As ASME B31.3 mentioned:
Piping in Normal Fluid Service shall be examined to the extent specified herein or to any greater extent specified in the engineering design
When a circumferential weld with an intersecting longitudinal weld(s) is examined, at least the adjacent 38 mm (11â „2 in.) of each intersecting weld shall be examined. (Para. 341.4.1. (b).1.)
Inyour case there are two longitudinal seam welds intersecting circumferential weld from both sides in the same line so to cover this area the girth weld and longitudinal weld shall be radiograghed separately so that all intersection area shall be clearly tested in addition PT and Hardness test shall be carried out to ensure that there is no surface defect or loss in ductility.
Kind Regards
Mahmoud Abdul Fattah
Sr. Inspector to Germanischer Lloyd
Mobile:+971 506 827 001
Email:aeme@gl-group.com
www.gl-nobledenton.com
>

>


From: sujay kumar
>To: materials-welding@googlegroups.com
>Sent: Wed, November 3, 2010 7:48:39 AM
>Subject: Re: [MW:8022] RT of longitudinal seam
>
>

Hi,
this is applicable for longitudinal seam pipe and circuferential girth generally what we doing.
what about when both side longitudinal seam are intersecting without maitain mim distance, at that RT is applicable to take 38mm both side or we have to maintain that nominal distance at any cost.
attached B31.3 341
also
thanks and regards
Sujay

>
>
On Tue, Nov 2, 2010 at 5:51 PM, AGUSTIN JIMENEZ wrote:
>



HI.
IF YOU USED 70 MM FILM AND PUTSEAM IN CENTER FILM, YOU HAVE APROXIMITLY MORE O LESS 38 MM OF INTERSECTION.

AGUSTIN
>

>


De: sujay kumar
>Para: materials-welding@googlegroups.com
>Enviado: mar, noviembre 2, 2010 4:06:45 AM
>Asunto: [MW:8012] RT of longitudinal seam
>



>

Dear Friends,

Having doubt ,when longitudinal seam anintersecting with circuferential seam,Taking RT of circumferential full girth 100%, is acceptable or have to take 38mm of longitudinal seam an intersecting pointand reference is B31.3 cl341.4.1

The welds to be examined shall be selected to
ensure that the work product of each welder or welding
operator doing the productionwelding is included. They
shall also be selected to maximize coverage of intersections
with longitudinal joints. When a circumferential
weld with an intersecting longitudinal weld(s) is examined,
at least the adjacent 38 mm (11â „2 in.) of each intersecting
weld shall be examined.

thanks and regards
Sujay
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Chandra Bhusan Tripathi
23 Beckett Circle
Perth, WA
Australia
M +61422812970
H +61862012197

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