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 -

Controle Mesure Systemes
Contrôle Mesure Systèmes designs, develops and manufactures nearly 30 years a complete NDT range of products in eddy current and ultrasonic testing methods.
1301 views
Technical Discussions
paresh
paresh
07:47 Dec-26-2002
x-ray of 42" welded joint

Dear members,
Could you please clarify following:
1. How much kV machine is suitable for taking double wall X-ray (directional) for 42" 23mm thk welded joint of pipe.
2. Has anybody carried X-ray for this size of joint?
3. What is practical time required for one joint?
4. Anybody has used X-ray for pipelines.

Awaits early reply.

Paresh





    
 
 Reply 
 
Ed Trotter
Ed Trotter
07:22 Dec-27-2002
Re: x-ray of 42" welded joint
: Dear members,
: Could you please clarify following:
: 1. How much kV machine is suitable for taking double wall X-ray (directional) for 42" 23mm thk welded joint of pipe.
: 2. Has anybody carried X-ray for this size of joint?
: 3. What is practical time required for one joint?
: 4. Anybody has used X-ray for pipelines.
.
: Awaits early reply.
.
: Paresh
.
.
My question is why would you want to use x-ray on a pipeline unless you are using a crawler. A Ir192 source is portable and can keep up with the spread if you have a portable darkroom at the site. X-ray machines require a power source and are too bulky for double wall shots. That's at least 3 shots per joint depending on your density variations with that thickness. Why don't you just get a crawler if you want to use x-ray and shoot panoramic shots?



    
 
 Reply 
 
paresh
paresh
07:52 Dec-27-2002
x-ray of 42" welded joint
Dear friends,
How can you do tie in joints using crawlers. Looking at requirement of X-ray only. I would like to know that if any body has experience and could guide me on my query such as KV, Practical time required and relevant details.

Thanking you in advance,

Paresh



: : Dear members,
: : Could you please clarify following:
: : 1. How much kV machine is suitable for taking double wall X-ray (directional) for 42" 23mm thk welded joint of pipe.
: : 2. Has anybody carried X-ray for this size of joint?
: : 3. What is practical time required for one joint?
: : 4. Anybody has used X-ray for pipelines.
: .
: : Awaits early reply.
: .
: : Paresh
: .
: .
: My question is why would you want to use x-ray on a pipeline unless you are using a crawler. A Ir192 source is portable and can keep up with the spread if you have a portable darkroom at the site. X-ray machines require a power source and are too bulky for double wall shots. That's at least 3 shots per joint depending on your density variations with that thickness. Why don't you just get a crawler if you want to use x-ray and shoot panoramic shots?
.



    
 
 Reply 
 
Ed T.
Ed T.
04:29 Dec-28-2002
Re: x-ray of 42" welded joint
: Dear friends,
: How can you do tie in joints using crawlers. Looking at requirement of X-ray only. I would like to know that if any body has experience and could guide me on my query such as KV, Practical time required and relevant details.
.
You didn't mention tie-ins in your original posting. I still am wondering why you would want to use x-ray on pipelines? I would also question why your client would require it.
: Thanking you in advance,
.
: Paresh
.
:
:
: : : Dear members,
: : : Could you please clarify following:
: : : 1. How much kV machine is suitable for taking double wall X-ray (directional) for 42" 23mm thk welded joint of pipe.
: : : 2. Has anybody carried X-ray for this size of joint?
: : : 3. What is practical time required for one joint?
: : : 4. Anybody has used X-ray for pipelines.
: : .
: : : Awaits early reply.
: : .
: : : Paresh
: : .
: : .
: : My question is why would you want to use x-ray on a pipeline unless you are using a crawler. A Ir192 source is portable and can keep up with the spread if you have a portable darkroom at the site. X-ray machines require a power source and are too bulky for double wall shots. That's at least 3 shots per joint depending on your density variations with that thickness. Why don't you just get a crawler if you want to use x-ray and shoot panoramic shots?
: .
.



    
 
 Reply 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1268

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1268
05:47 Dec-28-2002
Re: x-ray of 42" welded joint
Contrary to Mr. Trotter's assertions, X-ray of pipelines, even double-wall tie-in shots, is the normal option for large diameter pipeline weld inspections. Use of X-ray with Class 1 film has been a requirement in Canada for 20 years. Crawlers are ideal for the production of the mainline radiographs but when the sections are tied together the crawler cannot be used as it cannot be inserted into the pipe. Instead, multiple exposures are required (4-5 around the girth) for those few welds considered "tie-ins".. Yes, this can be awkward as the X-ray tube is usually heavy, but it is necessary. Harnesses are available that allow the tube to be secured and even moved around the girth for each exposure. Securing the tube to the pipe is a 2 man operation. The tie-in X-ray crew would normally have their own truck complete with darkroom and the gas-powered electric generator for both the X-ray tube and the processing facility operations.
Use of Ir-192 for detection of lack of sidewall fusion in a double wallexposure will provide a low probability of detection, it is for this reason we preferred X-ray in all situtations where radiography was used.
Ed
: : Dear friends,
: : How can you do tie in joints using crawlers. Looking at requirement of X-ray only. I would like to know that if any body has experience and could guide me on my query such as KV, Practical time required and relevant details.
: .
: You didn't mention tie-ins in your original posting. I still am wondering why you would want to use x-ray on pipelines? I would also question why your client would require it.
: : Thanking you in advance,
: .
: : Paresh
: .
: :
: :
: : : : Dear members,
: : : : Could you please clarify following:
: : : : 1. How much kV machine is suitable for taking double wall X-ray (directional) for 42" 23mm thk welded joint of pipe.
: : : : 2. Has anybody carried X-ray for this size of joint?
: : : : 3. What is practical time required for one joint?
: : : : 4. Anybody has used X-ray for pipelines.
: : : .
: : : : Awaits early reply.
: : : .
: : : : Paresh
: : : .
: : : .
: : : My question is why would you want to use x-ray on a pipeline unless you are using a crawler. A Ir192 source is portable and can keep up with the spread if you have a portable darkroom at the site. X-ray machines require a power source and are too bulky for double wall shots. That's at least 3 shots per joint depending on your density variations with that thickness. Why don't you just get a crawler if you want to use x-ray and shoot panoramic shots?
: : .
: .
.



    
 
 Reply 
 
Ed Trotter
Ed Trotter
03:04 Dec-29-2002
Re: x-ray of 42" welded joint
: Contrary to Mr. Trotter's assertions, X-ray of pipelines, even double-wall tie-in shots, is the normal option for large diameter pipeline weld inspections. Use of X-ray with Class 1 film has been a requirement in Canada for 20 years. Crawlers are ideal for the production of the mainline radiographs but when the sections are tied together the crawler cannot be used as it cannot be inserted into the pipe. Instead, multiple exposures are required (4-5 around the girth) for those few welds considered "tie-ins".. Yes, this can be awkward as the X-ray tube is usually heavy, but it is necessary. Harnesses are available that allow the tube to be secured and even moved around the girth for each exposure. Securing the tube to the pipe is a 2 man operation. The tie-in X-ray crew would normally have their own truck complete with darkroom and the gas-powered electric generator for both the X-ray tube and the processing facility operations.
: Use of Ir-192 for detection of lack of sidewall fusion in a double wall exposure will provide a low probability of detection, it is for this reason we preferred X-ray in all situtations where radiography was used.
: Ed

I stand corrected. My apologies. I am the first to admit when I am wrong. Canada always did go that extra mile.
The problem is, Paresh still doesn't have an answer to his question.
Ed

: : : Dear friends,
: : : How can you do tie in joints using crawlers. Looking at requirement of X-ray only. I would like to know that if any body has experience and could guide me on my query such as KV, Practical time required and relevant details.
: : .
: : You didn't mention tie-ins in your original posting. I still am wondering why you would want to use x-ray on pipelines? I would also question why your client would require it.
: : : Thanking you in advance,
: : .
: : : Paresh
: : .
: : :
: : :
: : : : : Dear members,
: : : : : Could you please clarify following:
: : : : : 1. How much kV machine is suitable for taking double wall X-ray (directional) for 42" 23mm thk welded joint of pipe.
: : : : : 2. Has anybody carried X-ray for this size of joint?
: : : : : 3. What is practical time required for one joint?
: : : : : 4. Anybody has used X-ray for pipelines.
: : : : .
: : : : : Awaits early reply.
: : : : .
: : : : : Paresh
: : : : .
: : : : .
: : : : My question is why would you want to use x-ray on a pipeline unless you are using a crawler. A Ir192 source is portable and can keep up with the spread if you have a portable darkroom at the site. X-ray machines require a power source and are too bulky for double wall shots. That's at least 3 shots per joint depending on your density variations with that thickness. Why don't you just get a crawler if you want to use x-ray and shoot panoramic shots?
: : : .
: : .
: .
.



    
 
 Reply 
 

Product Spotlight

Conformable wedge transducer

The conformability is obtained with a flexible membrane filled with water between the transducer and
...
the inspected component. The coupling between the membrane and the component requires a small quantity of water or couplant. The conformable wedge combines the acoustic performance of immersion technique with good coupling and low attenuation.
>

Lyft™: Pulsed Eddy Current Reinvented

PEC Reinvented—CUI Programs Redefined Corrosion under insulation (CUI) is possibly the greatest u
...
nresolved asset integrity problem in the industry. Current methods for measuring wall thickness with liftoff, without removing insulation, all have severe limitations. Eddyfi introduces Lyft — a reinvented, high-performance pulsed eddy current (PEC) solution. The patent- pending system features a state-of-the-art portable instrument, real- time C-scan imaging, fast data acquisition with grid-mapping and dynamic scanning modes, and flexibility with long cables. It can also scan through thick metal and insulation, as well as aluminum, stainless steel, and galvanized steel weather jackets. Who else but Eddyfi to reinvent an eddy current technique and redefine CUI programs. Got Lyft?
>

Echomac® Small

Available with up to eight channels of electronics to detect and evaluate thickness, flaws and eccen
...
tricity, this UT tester is housed in a convenient, smaller cabinet. This instrument can be used in conjunction with bubbler or immersion tank systems, or with a test bench or in laboratory applications. The Echomac® Small is available in the FD4, FD6 or FD6A versions.
>

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).
>

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