Hoisting Lugs - Codes and Standards for Inspection and Testing

[teagnp]

Hello guys, I´m back again after some years of hard studying!!!

I was wondering if anyone could help me. I´ve got a supplier building a skid which will have several lugs welded onto it for hoisting manoeuvres at site.
What type of testing should be carried upon the lug material, and on the lug-skid weld during Factory Acceptance Testing? Are there any codes or standards that tell us how to design said lugs and how to inspect the final product? Testing should be done under extreme conditions (i.e. low temperature).

I´m sorry if I´m not using the correct wording. In Spanish we call these hoisting holes ¨orejas de izaje¨, closest word I could find is a hoisting lug.

Many thanks for any answer, and I guess I´ll be coming back several times more!

Cheers,
Nico

 

[DekDee]

Nico,
The testing of the lugs (we call them lifting lugs or padeyes) will generally be governed by the code of construction of your skid.
If they are fillet welds you will generally have a minimum of 100% MT or PT.
If they are butt welds you will generally have a minimum of 100% UT & MT or PT.

Are these lifting lugs / padeyes shown on the original design drawings or are they "add ons" ?
Cheers,
DD

 

[ijzer]

Since failure of lugs during lifting could lead to serious safety issues I would advise the following:

Use lug material with impact test 27J at minus 20 or lower to assure that you have a shock resistant material.
Perform UT testing on laminations at the area where you are going to weld the lugs.
Perform MT examination of the welds.
Perform load test under witness by a LLoyd, DNV or other third party (after submittal of calculations to them)to determine the safe load.

 

[metengr]

Use this standard as a guide

https://exchange.dnv.com/publishing/stdcert/2011-10/Standard2-22.pdf

 

[teagnp]

Thanks to all who replied. Much obliged!