UT Quality/UT Quality USA industriesIndustries/LNG plants & terminals
LNG construction concentrates the hardest welding on one site: cryogenic service, austenitic stainless and 9% nickel steel, heavy-wall process piping, and tank welding built to API 620. UT Quality USA inspects that scope with radiography, encoded ultrasonics and surface methods qualified for the material before work starts.
The scope UT Quality USA crews are asked for on this work.
Liquid penetrant and ultrasonic inspection on cryogenic piping, 9% nickel steel and austenitic stainless, with the technique and the procedure qualified for the material before work starts.
Thick-section welds where a single radiographic exposure becomes slow or impractical, inspected by encoded ultrasonics or by the source and technique suited to the thickness.
Shell, annular and bottom welding on low-pressure storage tanks built to API 620, and the associated structural steel.
MT, PT, UT and VT on structural steel, module steel and pipe supports, to AWS D1.1 acceptance criteria.
Automated ultrasonic testing, phased array and TOFD, semi-automated ultrasonics, radiography by film, computed, digital and real-time methods, and the four conventional methods — magnetic particle, liquid penetrant, ultrasonic and visual testing — plus positive material identification. UT Quality’s automated ultrasonic system is proprietary, designed and built in-house.
Inspected and reported to the code your specification names: ASME B31.3 for process piping, API 620 for low-pressure and cryogenic storage tanks, ASME Section VIII for pressure equipment, ASME Section IX for qualification, and AWS D1.1 for structural steel.
Heavy wall and cryogenic material are where inspection method choice decides schedule. Encoded ultrasonics keeps inspection time close to flat as wall thickness climbs, while an iridium-192 radiographic exposure gets slower with every extra inch of steel — practical single-wall coverage with Ir-192 runs to roughly 2.5 inches of steel, with cobalt-60 or a linear accelerator beyond that.
Yes. Liquid penetrant and ultrasonic methods are used on 9% nickel steel and austenitic stainless, with the technique and the procedure qualified for the material before work starts.
By encoded ultrasonics where the specification allows it, or by radiography with the source and technique matched to the thickness. Ultrasonic inspection time stays near flat as thickness increases; radiographic exposure time does not.
Shell, annular and bottom welding on low-pressure and cryogenic storage tanks built to API 620 is within the scope of the conventional and radiographic methods the crews run.
Yes. MT, PT, UT and VT on structural and module steel to AWS D1.1 run on the same mobilization as the piping scope.
Technicians are certified Level I, II and III to our written practice under ASNT SNT-TC-1A / ANSI/ASNT CP-189, with Level III oversight of procedures and interpretation. UT Quality USA is a union operation.
Tell us the scope, the material and the governing code, and a UT Quality representative will follow up.
Request a UT Quality USA crewThe RAE family of companies
