UT Quality/UT Quality USA industries/Compressor & pump stations
A station packs into a few acres the variety a mainline spreads over a hundred miles: small-bore and large-bore piping, manifolds, launchers and receivers, vessels, and the steel holding it all up. UT Quality USA inspects station welding with radiography, encoded ultrasonics and the four conventional methods.
The scope UT Quality USA crews are asked for on this work.
Suction, discharge, fuel gas and utility piping welds, inspected by radiography or encoded ultrasonics to the ASME B31 code the specification names, with MT and PT for surface flaws.
Header and branch welding, closure and nozzle welds on pig launchers and receivers, and the associated supports.
Shell and head seams, nozzle and attachment welds on separators, scrubbers and receivers, inspected to ASME Section VIII.
Pipe supports, racks, skid frames and building steel inspected by MT, PT, UT and VT against AWS D1.1.
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: API 1104 where the weld is part of the pipeline system, ASME B31.8 for gas compressor stations and B31.4 for liquid pump stations, ASME B31.3 where the specification places process piping under it, ASME Section VIII for pressure equipment and AWS D1.1 for structural steel.
Station work is a lot of small welds in tight spaces on a short outage window, which usually means several methods on one job. The crews carry radiographic and ultrasonic capability plus MT, PT, UT and VT on the same mobilization, and report everything under one written practice.
It depends on where the weld sits. Pipeline-system welds are usually inspected to API 1104, with ASME B31.8 (gas compressor stations) or B31.4 (liquid pump stations) governing the station piping; ASME B31.3 applies where the specification places process piping under it. The specification decides, and inspection follows it.
Where the specification allows a volumetric method other than radiography, encoded phased array or TOFD removes the exclusion zone, so adjacent trades keep working.
Yes. Small-bore welds are covered by radiography and by the conventional methods, with the technique selected for the diameter and wall.
Yes. Separators, scrubbers and receivers are inspected to ASME Section VIII alongside the piping scope.
Technicians are certified Level I, II and III under our written practice to ASNT SNT-TC-1A and/or 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.
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