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 -

2382 views
Technical Discussions
Michael E. Thomas
Michael E. Thomas
06:09 Jan-15-2005
RT coverage, ANSI B16.34

Hello, in fact I'm looking for a voice of authority to affirm and agree with my interpretation of the standard as noted below ... I've been a casting radiographer for almost 30 years and have made this arguement for almost as many. I'm supposed to be "good" so my reputation is definitely on the line! If you disagree with the following ,please be firm but gentle.

With regard to "critical areas" of valves (valve body only), radiographic method - ANSI B16.34; the standard is in my opinion (and this is where I get into trouble), very clear considering coverage which, here we go, DOES NOT INCLUDE FLANGE NECKS other than the NECK of FLANGED, BOLT ON BONNETS.
I cannot find in the written description any reference to flange necks other than that specified in the paragraph for the bonnet area, flanged or otherwise. Further, there is no implication of flange necks being "critical" in the sketches provided by the standard, other than at the flanged, bonnet site.
This does not detract from the "seat(s)", "square ends" and/or weld prep end(s) coverage. But simply that, no connection other than the bonnet portion that is fully flanged, requires RT!
It seems ludicrous to me that the standard would depict coverage on the BONNET portion and neck of a reduced flange valve, the bonnet NECK only on a fully flanged valve, one or both seats, one or both weld ends and utterly omit any pictoral representation of a flange neck other than the bonnets'!!

I beleive that intentionally shooting these areas ("peripheral" flange necks) implyng that it is "code required" or "just in case..." does our clients a dis-servive ethically and economically!

Michael E.


 
 Reply 
 

Product Spotlight

NOVO Armor 15 & NOVO Armor 22

The Armor Kit Contains the NOVO Armor, which provides additional mechanical protection to the NOVO 1
...
5WN & NOVO 22WN Detectors, the Armor Stand and a traveling soft cover. - Newest shock absorbent technology case - Water resistant design - Supports wired & wireless communication - Multiple positioning options - Tripod connection using the Built-in 1/4” threads - Simple Detector battery replacement
>

OPBOX with standard software is able to do all types of inspections and measurements: flaw detection in welds and materials, scanning of objects, testing composite materials, forged and moulded pieces, many UT inspections, measurements of properties of ma

Typical applications: UT measurements with pulse technique, Measurement of thicknesses also at hig
...
h temperatures, Measurements of properties of materials, including fluids and gases We are delivering a standard version of the software (for any Microsoft Windows up to 10 x64 with Microsoft Hardware certification report Approved) and for special needs: SDK with ready to use examples for LabView, MATLAB x64, C++ wrapper for dll, Python and Linux., and also low-level description of how to control our devices directly from any USB tools
>

High-performance Linear Phased Array Probes

Available to order from stock in a range of 5MHz – 7.5MHz and from 16 to 64 elements. Designed w
...
ith piezo-composite elements, Phoenix phased array probes provide high-resolution imaging to maximise sensitivity; accurate ultrasonic detection and sizing of defects in welds; and effective corrosion mapping. Housed in a rugged stainless steel case for on-site industrial NDT applications.
>

Portable Ground Penetrating Radar - Proceq GP8000

The Proceq GP8000 portable ground penetrating radar instrument is the beginning of a new era in ND
...
T. The outstanding, patented ultra- wideband technology combined with a compact wireless probe delivers unmatched industry performance. Proceq GP8000 is the world’s first large-scale inspection solution that utilizes Augmented Reality in industrial applications.
>

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