where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -
463 views
Technical Discussions
Gary Woodside
NDT Inspector,
Visual Testing Services Ltd., United Kingdom, Joined Feb 2000, 8

Gary Woodside

NDT Inspector,
Visual Testing Services Ltd.,
United Kingdom,
Joined Feb 2000
8
01:07 Jan-28-2003
Stress Corrosion Cracking

We have reported indications of SCC on gas manifold internal change of section. The external geometry is a 2" weldlet on a 6" main pipe. The internal surface is very roughly machined and we have recommended radiography to confirm the indications. Due to the activity on site at present this can't be done without delaying start up. The rough internal surface can be accessed through a 1" bore pipe 6" long, the external surface is accessible. Can anybody advise the best method to:

1. Confirm our findings for the client.
2. Size the cracking found.

Thanks for your advice.
Gary


 
 Reply 
 
J. Mark Davis
Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama, USA, Joined Mar 2000, 85

J. Mark Davis

Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama,
USA,
Joined Mar 2000
85
03:30 Jan-28-2003
Re: Stress Corrosion Cracking
Gary,

The ID Creeping Wave method may be an application for your inspection problem. Or using Focused Refracted Longitudinal Waves (or OD creeping Waves) like HALT maybe effective.

If you are not familar with these methods go to ndt.net publications sections and see the Advanced UT Flaw Sizing Handbook.

I conduct Advanced UT Detection and Sizing Training Courses on these methods.

Sincerely,

J. Mark Davis

We have reported indications of SCC on gas manifold internal change of section. The external geometry is a 2" weldlet on a 6" main pipe. The internal surface is very roughly machined and we have recommended radiography to confirm the indications. Due to the activity on site at present this can't be done without delaying start up. The rough internal surface can be accessed through a 1" bore pipe 6" long, the external surface is accessible. Can anybody advise the best method to:
.
: 1. Confirm our findings for the client.
: 2. Size the cracking found.
.
: Thanks for your advice.
: Gary
.



 
 Reply 
 

Product Spotlight

NDTkit RT

NDTkit RT, TESTIA's Digital Radiography software The NDTkit product line software for X-ray analysi
...
s. NDTkit RT is a software benefiting from the Ultis kernel which is dedicated to radiographic image analysis. It offers a set of tools and filtering processes to assist RT operators in finding relevant flaws.
>

Wireless TOFD scanner

Quick, accurate and highly reproducible welds testing. The System operates wirelessly and is compat
...
ible with any type of Windows based Laptop, Desktop or Tablet.
>

TESTD-PT SYSTEM

Pulse thermography is a non-contact test method that is ideal for the characterization of thin fil
...
ms and coatings or the detection of defects. With a remarquable short test time and a high detection sensitivity, the Telops TESTD-PT is the perfect tool for non- destructive testing. With such high frame rates, it is even possible to investigate highly conductive or diffusive materials.
>

NEW! The PragmaPro Instrument Platform

The PragmaPro is based on a modular cartridge technology and supports various NDT instrument modal
...
ities such as UT, PAUT, ECT and many more. This new platform is based on a machined, powder-coated aluminum frame for shock-proofness, best sealing qualities and maximum heat dissipation. This is practical to extend the outdoor temperature range and/or to extend the power injected in the transducers. The PragmaPro is aiming at a very wide range of applications, such as weld scanning, corrosion mapping and composite testing.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window