Re: Inadvertant testing
----------- Start Original Message -----------
: : : : What is the prevailing attitude to "inadvertant testing", as in RT when a defect is seen outside the length marked for inspection. My own attitude is, call it but note where it is. Some Codes are specific on the subject, but other remain silent as if this never happened. What is the concensus of the Forum?
: : : If, just by case, an inspector finds a flaw outside of the intended inspection area, this flaw has to be recorded and to be evaluated according to those codes, which are valid for that 'outside' area.
: : : E.g., one has to inspect circumferental site welds of a pipeline, and he detects a flaw in the longitudinal shop weld of the pipe. This case, or similar cases, where one detects something in the base metal near the weld, are very common. And from the view points of quality, safety and NDT ethics, you can't then close your eyes. If necessary, the flaws have to be repaired or the object has to be rejected.
: : : The argument, that the flaw can be tolerated or that the object can be accepted, because the flaw was outside of the intended inspection area or above the intended sample rate,
: : : due to my opinion is not legitimate.
: : : Regards
: : : Uli Mletzko
: : : NDT Group, Materials Testing Institute,
: : : University of Stuttgart, Germany
: : Such an indication should definitely be reported - described, located, and detailed as much as possible - but if it is outside of the required evaluation area, reporting is as far as the inspector can go. The responsible engineers must have the final word, but they must first have the detailed report from the inspector to be able to make a decision. One certainly cannot ignore possible defects just because they happened to be seen on the "wrong" side of the location marker.
: Most codes/specs require that the fabricator is responsible for doing work in accordance with the requirements of the code/spec. Therefore, if a defect (i.e. a discontinuity that would be rejectable based on the applicable acceptance criteria - RT for instance in your example) is noted outside of the area of interest, it is generally very easy to argue that the area or work in question does not meet the requirements of the code/spec and needs to be repaired/reworked in accordance with the requirements of the code/spec.
------------ End Original Message ------------
Gentlemen, I am pleased that everyone so far has taken what I believe to be the correct and ethical view. The question was prompted when discussing a film, and the interpreter claimed that a previous supervisor (different company) would not reject defects outside the shot markers when doing spot RT since the customer would go elsewhere.
Research and Applications Development For NDT
The Research and Applications Development (RAD) group is a newly formed team
within Acuren dedicat
ed to tackling challenging inspection problems. Our focus
is the development of novel, field deployable, advanced inspection techniques
for use in cases where standard NDT methods are ineffective. We don't wait for
new innovations, we engineer them. From concept to commissioning.
TOPAZ® 64: Fully Integrated Portable 64 Channel PAUT Instrument with FMC & TFM
Introducing TOPAZ64, the industry’s most intelligent fully integrated, portable 64-channel phased
array ultrasound (UT) instrument.
TOPAZ64 combines code-compliant phased array UT with the industry’s most advanced full matrix capture (FMC) and total focusing method (TFM) capabilities.
Featuring the highest acquisition frequency in its class, high resolution FMC and a 12” multi-touchscreen, users can easily visualize even the smallest flaws. TOPAZ64 can generate a bipolar pulse that provides more acoustic energy versus previous models for punching through thick components. The result is a portable tool that delivers increased inspection coverage, more accurate signals, and the ability to handle all UT inspections in one package. TOPAZ64 is ideal for challenging applications in transportation, oil and gas, manufacturing and power generation.
TVC awarded UKAS accreditation
TVC are delighted to finally announce we have been awarded UKAS
accreditation for our calibration
Laboratory accreditation to ISO/IEC 17025:2005 enables us to
conduct the Electrical Verification of Ultrasonic Flaw Detection
Equipment to BS EN 12668-1:2010. It has taken many months of hard
work and we want to thank our staff for all their efforts during
this massive undertaking.
Magnetic X-Ray Pipeline Crawler
Zhong Yi brand pipeline crawler is magnetic/micro-video controlled
crawler with DC X ray unit inst
alled for checking welding of pipeline.
Move steadily inside the pipeline 6''-60''diameter with speed of up to
18m/min, Max. moving diatance 5 kilometers and provide the efficient
inspection of the pipeline.