ARC news

April 9, 2021

Phased Array NDT Mockup Proving ARC's Preparation for Jobs

ARC Services recently custom designed a mockup that was utilized to prove the highly advanced phased array NDT method for a customer. This particular technique is used to detect indications and thereby determine the quality of the component being inspected. Also performed in this mockup was radiographic testing (RT), the current method being utilized by the customer in the field. The inspections using the phased array method and radiographic testing method were conducted in unison to compare the two different methods and showcase the advantages of phased array NDT testing to the customer. 

The phased array method is performed very quickly and is very efficient in locating deficiencies. One main advantage is that there is no job stoppage required while it is being performed in the field. Avoiding partial shutdowns can potentially save a company hundreds of thousands of dollars. Meanwhile, with radiographic testing, sometimes a wide barrier must be set up, and all nearby work paused, depending upon the potency of the source. 

To set up this test, two identical coupons were prepped with 12 identical indications that were to be detected by these two methods. Following the procedure, both methods detected all 12 indications, proving the accuracy of both methods. The information interpretation for both the phased array NDT and radiographic testing was performed by highly qualified individuals. However, the phased array is still ideal as no job stoppage is required and the inspection was completed more quickly than the radiographic testing. 

The mockup was also created to run our welders through the proficiency testing prior to a planned outage at a local plant in South Carolina. ARC Services spends a great deal of time training our welders and investing time, resources and effort into preparing our welders to perform to optimum quality in the field. This ensures that there are very few holdups in the field because of thorough training prior to arriving on site.