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 -

1327 views
Technical Discussions
Charlie Jackson
Engineering
MBINSPECTION, United Kingdom, Joined Aug 2003, 7

Charlie Jackson

Engineering
MBINSPECTION,
United Kingdom,
Joined Aug 2003
7
01:35 Jun-27-2005
Twisted heat exchanger tube inspections

It would appear that a recent development in the exchager field is twisted tube bundles. Does anyone know of an inspection tool such as iris centest eddy current that has regularly been applied successfully.

Kind Regards Charlie


    
 
 
Ingo Becker
Engineering, NDT Inspector & Sales
ec-works GmbH, Germany, Joined Apr 2000, 29

Ingo Becker

Engineering, NDT Inspector & Sales
ec-works GmbH,
Germany,
Joined Apr 2000
29
03:57 Jun-27-2005
Re: Twisted heat exchanger tube inspections
Charlie,

last year we have developed a customized eddy current probe for the inspection of a twisted tubes heat exchanger located in a refinery. Tube material was SS, tube dimension more or less 1 inch with 1,5mm wall. Please try to contact me for further information

best regards

Ingo

----------- Start Original Message -----------
: It would appear that a recent development in the exchager field is twisted tube bundles. Does anyone know of an inspection tool such as iris centest eddy current that has regularly been applied successfully.
: Kind Regards Charlie
------------ End Original Message ------------




    
 
 
Rich Roberts
Engineering, Executive Managment
Quest Integrity Group, USA, Joined Nov 1998, 78

Rich Roberts

Engineering, Executive Managment
Quest Integrity Group,
USA,
Joined Nov 1998
78
07:48 Jun-27-2005
Re: Twisted heat exchanger tube inspections
Good Day Mr. Jackson,

I believe you are talking about the twisted tubes manufactured by Brown Fin Tube? If so, the laser based LOTIS technique was successfully applied to detect pitting, corrosion, erosion on the ID. The only problem with any of these NDT techniques which shoot a beam (i.e. ultrasound, laser, etc.) is that there are blind spots where the angle of incidence becomes greater than the diameter of the receiver. With twisted tubes the greater the ratio between the minimum diameter: maximum diameter, the larger portion of the tube circumference not inspected.

Regards, Rich


----------- Start Original Message -----------
: It would appear that a recent development in the exchager field is twisted tube bundles. Does anyone know of an inspection tool such as iris centest eddy current that has regularly been applied successfully.
: Kind Regards Charlie
------------ End Original Message ------------




    
 
 
James Gauthier
Engineering,
ABB, Inc., USA, Joined Nov 2007, 25

James Gauthier

Engineering,
ABB, Inc.,
USA,
Joined Nov 2007
25
03:04 Jun-27-2005
Re: Twisted heat exchanger tube inspections

The LOTIS technique that I have seen several times demonstrated a requirement for an extremely clean inner surface. I caution those that want to use this technique if cleaning is going to be an issue.





    
 
 

Product Spotlight

SONOAIR - air-coupled Phased Array Ultrasonic Inspection System

For highly attenuating materials, the performance of the system is critical. The ultrasonic sensors,
...
the scanning area and the system settings should be flexibly adapted to the test task and the material. These high expectations are met with the new and modular testing system SONOAIR. With the world’s first air-coupled phased-array UT inspection system SONOAIR we developed a technology that works with up to 4 transmitter and receiver channels with freely configurable square wave burst transmitters as wells as low noise receiving amplifiers.
>

NEOS III

NEOS III is Logos Imagings lightest DR system. With a built-in battery and internal wireless commu
...
nication, the NEOS III is perfect for users that want to quickly assess an item.
>

Compact NDT inspection-heads for measurements with active thermography

The compact inspection head is suitable for thermographic ndt tasks. The uncooled infrared camera
...
is specially developed for NDI-tasks and offers a thermal sensitivity until now known only from thermal imagers with cooled detector. All required components and functions are integrated into the inspection-head. You will only need an ethernet cable to connect the sensor with the evaluation system.
>

IRIS 9000Plus - Introducing the next generation of heat exchanger inspection.

Representing the seventh generation of the IRIS system, the IRIS 9000 Plus has nearly 200 years of c
...
ombined field inspection experience incorporated in its design. This experience combined with a strong commitment to quality and a history of innovation has made Iris Inspection Services® the undisputed leader in IRIS technology.
>

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