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- since 1996 -

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Technical Discussions
gowrisanthosh
NDT Inspector,
Royscan engineering pte ltd, Singapore, Joined May 2008, 52

gowrisanthosh

NDT Inspector,
Royscan engineering pte ltd,
Singapore,
Joined May 2008
52
15:34 Jul-17-2009
lifting eyepad inspection

hi to all,
which one is the best inspection method to inspect LIFTING EYE PAD. thanks for reply in advance. while lifting in our workshop eye pad was broken in eye pad base metal and fracture surface is very bright like brittle material. the load was 300tons. thankyou

    
 
 
bob sudharmin
Engineering, Reliability and Integrity Eng
Shell Malaysia Trading, Malaysia, Joined Jan 2008, 54

bob sudharmin

Engineering, Reliability and Integrity Eng
Shell Malaysia Trading,
Malaysia,
Joined Jan 2008
54
16:43 Jul-17-2009
Re: lifting eyepad inspection
In Reply to gowrisanthosh at 15:34 Jul-17-2009 (Opening).

I guess the minimum you could do is Dye Penetrant Test or Magnetic Particles Inspection to ensure that no cracks has been initiated.

    
 
 
Abbas Bombaywala
NDT Inspector
Free Lance, India, Joined Jul 2007, 91

Abbas Bombaywala

NDT Inspector
Free Lance,
India,
Joined Jul 2007
91
17:02 Jul-17-2009
Re: lifting eyepad inspection
In Reply to gowrisanthosh at 15:34 Jul-17-2009 (Opening).

Dear Gowri,

Pneumatic Test is done world wide for Lifting Lugs Pad and WFMT with DC Yoke is good practice to ensure a good weld,
Lifting Lug Pads are most likely to have laminar tearing to avoid such laminar tearing you should properly grind the weld cap edges. And also grind the sharp edges (Edges which are not properly fused with the shell body) of the pad weld.

Regards.
Abbas Bombaywala

    
 
 
Honda_Jazz
Honda_Jazz
06:13 Jul-19-2009
Re: lifting eyepad inspection
In Reply to Abbas Bombaywala at 17:02 Jul-17-2009 .

i'm alsmost many padeye inspection.. just doing mpi..

    
 
 
John O'Brien
Consultant, -
Chevron ETC , USA, Joined Jan 2000, 278

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
278
15:37 Jul-19-2009
Re: lifting eyepad inspection
In Reply to Honda_Jazz at 06:13 Jul-19-2009 .

Its a matter of risk assessment base don load and criticality of what you are lifting on the pad eye.
Next is compliance with any regulatory requirements - be careful these may not be in your normal inspection codes but lifting or generic safety rules.
High risk - high consequence - design welds correctly and apply an appropriate NDE method RT/UT plus MT as applicable.
lastly load test the pad eye is often required for critical lifts.
Periodic recertification amy also be required.

    
 
 
Muthu
Director, - -
Metalcare Group Inc., Canada, Joined Oct 2008, 15

Muthu

Director, - -
Metalcare Group Inc.,
Canada,
Joined Oct 2008
15
02:16 Jul-21-2009
Re: lifting eyepad inspection
In Reply to John O'Brien at 15:37 Jul-19-2009 .

Cause of the padeye failure may just beyond the use of correct NDT method(s). As John said, depending on the criticality of the lift, the risk assessment based on load for proper design, local regulatory requirements, qualification and compliance of weld procedures, NDT methods are required.
The following checks may help:
1) Proper engineering design such as sufficient thickness of the pad plates, weld size etc.,
2) Welding procedure parameters are stricktely adhered such as electrode baking, preheating, interpass temperature, interpass cleaning etc.,
3) Final weld visual inspection for sufficient fillet size, other discontinuities such as overlap, unterdcut (stress risers) etc.,
4) Magnetic Particle Examination would be sufficient in most cases for the fillet welds. However, lamination check by UT, and MT on welding edges before welding may help as well.

In cases where people tend to under estimate the criticality of the padeyes and lifting lugs, as these are only going to be used once (or seldom) in many cases.

    
 
 
Gursharn
Gursharn
21:23 Oct-15-2010
Re: lifting eyepad inspection
In Reply to Muthu at 02:16 Jul-21-2009 .

Is there a legislation in regards to Lifting Lugs testing in Ontaio- Canada, if there is what is the legislation and and what kinfd of testing is required.

    
 
 
Ansar Akhtar
Ansar Akhtar
06:45 Jan-26-2013
Re: lifting eyepad inspection
In Reply to Gursharn at 21:23 Oct-15-2010 .

Dear All,

Is there any Criteria regarding the Wall thickness of lifting eyes.

    
 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 831

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
831
18:54 Jan-27-2013
Re: lifting eyepad inspection
In Reply to Ansar Akhtar at 06:45 Jan-26-2013 .

Gursharn,

Yes there is a standard of inspection for lifting devices in Ontario, many of them. It all depend on what you are using to do the lift.

Ansar Akhtar,

Yes there area standard for the fabrication of lifting eyes. Which one? This will depends on where you live or intend to use them.

    
 
 
Milind Darje
Milind Darje
04:55 Dec-04-2015
Re: lifting eyepad inspection
In Reply to gowrisanthosh at 15:34 Jul-17-2009 (Opening).

The lifting Pad eyes are designed for critical working load,
Welding on these padeyes is full penetration ‘T’ connection exerting maximum shear load during working.
This weld joint shall be inspected as category ‘A’…
Following can be considered for ITP to cover the required NDT for this critical weld;
• MPI of edge preparation
• UT of all part for lamination check with normal beam probe
• MPI after back gauging
• MPI of intermediate weld layer (if possible)
• MPI after completion of weld
• UT after completion of weld

NDT level III shall provide the UT procedure with scan plan for approval. This UT needs a special mock-up block of same material, dimensions & welding process & shall have known reflectors at the fusion zones.

Regards,
Milind Darje

    
 
 

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