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 -
1149 views
Technical Discussions
Andre van Vuuren
Andre van Vuuren
01:54 Nov-04-2006
Pipeline inspection

Greetings

Looking for a solution to detect longitudinal cracks in "in-service" pipelines 6"-12" OD, Wall thickness 12-14mm. External scanning methods only. No access to bore.

Andre van Vuuren


 
 Reply 
 
Roberto Falconio
Engineering, NDT/Metrology SUPERVISOR
El Salvador, Joined Feb 2000, 13

Roberto Falconio

Engineering, NDT/Metrology SUPERVISOR
El Salvador,
Joined Feb 2000
13
05:40 Nov-04-2006
Re: Pipeline inspection
Hi! You may use ultrasonic shear wave technique, I will assume per your message that cracks runs parallel to the pipe axis. In this case you may manufacture a special transducer that fit the outer surface of the pipe, and perform the scan in order to detect on the first leg in case that cracks start at the inner surface. You may also manufacture a standard with the same geometry and material of the pipe you are inspecting. You may ask to machine several EDM notches of different lenght and depth so you can evaluate the response of your UT system.
Hope that help a little
Best regards


----------- Start Original Message -----------
: Greetings
: Looking for a solution to detect longitudinal cracks in "in-service" pipelines 6"-12" OD, Wall thickness 12-14mm. External scanning methods only. No access to bore.
: Andre van Vuuren
------------ End Original Message ------------




 
 Reply 
 
mj
mj
09:50 Nov-08-2006
Re: Pipeline inspection
go for b scan, if u want more details send u r quires to my email


 
 Reply 
 
G.Madhesan
Consultant, Welding ýnspector/QAQC inspector
CHENNAI UNIVERSITY, Turkey, Joined Nov 2004, 10

G.Madhesan

Consultant, Welding ýnspector/QAQC inspector
CHENNAI UNIVERSITY,
Turkey,
Joined Nov 2004
10
00:43 Mar-15-2007
Re: Pipeline inspection
First up all difficult to scanning at 6" pipe because of curvature;If you can use of shoe also difficult to find the scattered cracks longitutunally.
If possible with limitations of service condition and temprature you can go for gamma ray.

---------- Start Original Message -----------
: Greetings
: Looking for a solution to detect longitudinal cracks in "in-service" pipelines 6"-12" OD, Wall thickness 12-14mm. External scanning methods only. No access to bore.
: Andre van Vuuren
------------ End Original Message ------------




 
 Reply 
 
JW
JW
05:30 Mar-19-2007
Re: Pipeline inspection
----------- Start Original Message -----------
: First up all difficult to scanning at 6" pipe because of curvature;If you can use of shoe also difficult to find the scattered cracks longitutunally.
: If possible with limitations of service condition and temprature you can go for gamma ray.
: ---------- Start Original Message -----------
: : Greetings
: : Looking for a solution to detect longitudinal cracks in "in-service" pipelines 6"-12" OD, Wall thickness 12-14mm. External scanning methods only. No access to bore.
: : Andre van Vuuren
------------ End Original Message ------------

Try using TOFD


 
 Reply 
 

Product Spotlight

Silverwing RMS PA - Phased-array corrosion mapping

Eddyfi Technologies integrated two market leading solutions, Silverwing’s RMS and M2M’s instru
...
ments to provide a high-speed, remote access ultrasonic phased-array inspection system with live total focusing method (TFM).
>

Ultrasonic Squirter/Gantry System

TecScan’s NDT Ultrasonic Gantry Systems are industrial Squirter scanners designed for non-destru
...
ctive quality testing and raster scanning of large structures and parts. The Gantry Systems are usually composed of an Industrial Mechanical Scanner and a Control Room with System Workstation.
>

ISAFE3 Intrinsically Safe Sensor System

ISAFE3 intrinsically safe sensor system of Vallen Systeme is especially targeted at the petrochemica
...
l - as well as oil and gas transportation industry. The sensor system is designed for permanent monitoring or periodic inspection tasks. Sensors are available for different AE-frequency ranges optimized for corrosion and fatigue crack detection and other applications. The ISAFE 3 sensor system consists of an AE-sensor (model ISAS3) certified according to ATEX/IEC for installation in zone 0, gas group IIC, IP68, 20 to +60 °C, and a signal isolator (model SISO3) certified for installation in zone 2. An ISAS3 sensor can be mounted in atmosphere or submerged, e.g. in water or crude oil. It is supported by mounting tools for temporary (magnets) or permanent (welded) installation. ISAFE3 supports automatic sensor coupling test and can be used with any AE signal processor supporting 28V supply at 90 mA peak, e.g. Vallen Systeme ASIP-2/A.
>

Navic - Steerable Modular Automated Scanner

The Navic is a modular, motorized, steerable scanner designed to carry multiple attachments used
...
in various scanning and inspection applications. The Navic is capable of weld scanning (girth welds and long seam welds), automated corrosion mapping, and tank scanning.
>

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