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 -
680 views
Technical Discussions
Muhammad Azhar Jamil
NDT Engineer
Panama, Joined May 2006, 17

Muhammad Azhar Jamil

NDT Engineer
Panama,
Joined May 2006
17
09:33 May-06-2007
Re: Inspection of welding

Dear Nigel,

Many thanks for your reply, Infact let me explain something further, you are right that the dry powder or some other consumables can used specially made for high temperature applications, but the major problem with us is the time constraint as the plant was shut down on forced outage, and to get these products will take time as we might have to import them. The magnaflux product we have available on site are WCP2, 7HF (black ink) for MPI, and SKD (Developer) and Penetrant gor DPI, on the spray cans I think the mentioned temperature limit is that we cannot use > 50C. Therefore rephrasing my question is that if someone try to use this in the case mentioned in my previous email is allowable or not or if any one has used at that temperature please share your experience.

I will add another general question regarding welding inspection, that after how many hours it is normally recommended to inspect any weld, as fas as I know we have to give some time after welding for possible hydrogen cracking.

Thanks in advance for your time


 
 Reply 
 
Nigel Armstrong
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel Armstrong

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
09:50 May-11-2007
Re: Inspection of welding
Hello Muhammad

Sorry I have not responded to your last post, but I have been remote from an internet connection for the last few days.

I hope you managed to source a supply of MPI high temperature dry powder particles for your inspections as this is the ready answer to your inspection problem. If not then my contention would be to wait until the pipes were sufficiently cool (<50 deg C) to allow the use of conventional ambient temperature MPI and Penetrant materials. Management has to understand the concepts of safety and quality of inspection. As Tom T stated at high temperatures there is a safety issue so we dont need to go further into the practicality of using normal temperature materials in such a case.

For your other question for materials/welding processes prone to hydrogen cracking, the delay period is usually a minimum of 24 hours from cessation of all welding activities prior to non-destructive examination.

Regards

Nigel


----------- Start Original Message -----------
: Dear Nigel,
: Many thanks for your reply, Infact let me explain something further, you are right that the dry powder or some other consumables can used specially made for high temperature applications, but the major problem with us is the time constraint as the plant was shut down on forced outage, and to get these products will take time as we might have to import them. The magnaflux product we have available on site are WCP2, 7HF (black ink) for MPI, and SKD (Developer) and Penetrant gor DPI, on the spray cans I think the mentioned temperature limit is that we cannot use > 50C. Therefore rephrasing my question is that if someone try to use this in the case mentioned in my previous email is allowable or not or if any one has used at that temperature please share your experience.
: I will add another general question regarding welding inspection, that after how many hours it is normally recommended to inspect any weld, as fas as I know we have to give some time after welding for possible hydrogen cracking.
: Thanks in advance for your time
------------ End Original Message ------------




 
 Reply 
 

Product Spotlight

NDT.net launches mobile-friendly design

NDT.net has revamped its website providing a mobile-friendly design.The front page received a comp
...
letely new design and all other sections are now reacting responsively on mobile devices. This has been a major step to make our website more user- friendly.
>

32:128PR PAUT & 2-ch TOFD Flaw Detector: SyncScan 2

●32:128PR PAUT with optional 2-ch TOFD to maximize your efficiency ●Support PR mode for corrosi
...
on inspection ●Multiple solutions for welds & corrosion ●Faster scan speed (Approximately 3 meters/minute) ●Light weight: 4kg only including battery
>

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.
>

CIVA 2020 UT Module

CIVA NDE Simulation Software is the world leader of NDT Simulation. The UT simulation Module incl
...
udes: - "Beam computation": Beam propagation simulation - "Inspection Simulation": Beam interaction with flaws or specimens The user can simulate a whole inspection process (pulse echo, tandem or TOFD) with a wide range of probes (conventional, Phased- arrays or EMAT), components, and flaws.
>

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