Have a vessel, non lethal service, non code stamped, that was designed per Sec VIII Div 1. Client wants spot RT to fullfill 85% joint efficiency. I, as manufacturer, have proposed 100% shear wave UT to give overall better information on all weld seams. Client agrees but wants me to provide evidence that 100% UT will fullfill Code requirements of 85% JE.

Do not have 2010 edition with me at this time. CC-2235-6. Code Case 2235 permits the use of UT in lieu of RT at any time, under the qualifying conditions of the Code Case. In other words, the Case allows for the substitution of ultrasonic examination in lieu of radiographic examination for all welded seams in a vessel that require examination.

I know this requirement does not exist in the 2008 Edition Code.

In the ASME Sec VIII Div 1 2010 Edition, has this Code Case been adopted and incorporated? And would this fulfill 85% JE req?

PS Need amunition for use of UT in lieu of RT...

Thanks for you help,
QCRobert

Hi,

CC2235 is incorporated in ASME VIII/1 Edition 2010 Addenda 2011 with a reference to the applicable paragraph of ASME VIII/2 (I think that it not user friendly).

Up to Edition 2010 you can use code cases 2235-9 but only subject to the acceptance of the end user and the local jurisdiction.

In both cases shall the ultrasonic examination be performed using a device employing automatic computer based data acquisition e.g. TOFD- oder Phased Array UT.

_________________
Kind regards,
Juergen Fleischfresser

Thank you for the concise information, Juergen, and quick response.

Upon reading CC2235, it states Sectorial scans (S-scans) with phased arrays may be used for the
examination of welds.

I take this to mean it may be used as opposed to it shall be used?

May: you may or may not.
Shall. You have to do it.
mauro

Why are you preferring UT over RT?
Since the vessel is not code stamped but designed according to it. I think RT should be performed.

Lower cost and more examination coverage