Oil & Gas NDT Services in Seattle 2026 — ASNT Level III Led
Atlantis NDT delivers oil & gas ndt services in Seattle. ASNT NDT Level III-led. Seattle is a key hub for aerospace, refining & maritime operations. Technicians are certified by their employer to its SNT-TC-1A written practice, and procedures and reports are reviewed by an ASNT NDT Level III (UT, RT, MT, PT, VT).
Oil & Gas Inspection Scope in Seattle
Comprehensive NDT inspection for Oil & Gas facilities: pressure vessels (API 510), piping (API 570), above-ground storage tanks (API 653), heat exchangers + columns, fired heaters + furnaces, offshore platforms + FPSOs (where applicable), turnaround + EPC project support. Methods: UT (including PAUT and TOFD), RT, MT, PT and VT.
Code + Compliance
Oil & Gas facility inspections per: ASME B&PV Sections V + VIII + IX + XI; ASME B31 piping series; API 510 + 570 + 571 + 653 + 936 + 1169; NACE MR0175 + MR0103 sour-service; ASTM E-series; ISO 17635/17636/17640; AWS D1.1/3.6; IACS Rec-20 marine. Records are retained in Atlantis NDT ERP.
Free Consultation in Seattle
Atlantis NDT publishes no pricing — pricing varies by region + scope + delivery model. Request your free 30-minute consultation with founder Anoop Rayavarapu (ASNT NDT Level III in UT, RT, MT, PT and VT). Every job is quoted on request. See also verticals, consulting, Seattle ERP, Seattle training.
What oil and gas inspection actually covers
Assets in scope: pressure vessels and separators, process piping and flowlines, aboveground storage tanks, heat exchangers, fired heaters, wellheads and Christmas trees, and gathering and transmission pipelines.
Damage mechanisms that drive the inspection plan
Sulfidation and naphthenic acid corrosion at temperature; wet H2S cracking including HIC and SOHIC in sour service; CO2 corrosion and top-of-line corrosion in wet gas; microbiologically influenced corrosion in dead legs and low points; corrosion under insulation; and erosion-corrosion at elbows and reducers.
Methods applied
Ultrasonic thickness measurement at corrosion monitoring locations, phased array and TOFD for weld examination, radiography including profile radiography for small-bore and insulated lines, magnetic particle and penetrant for surface examination, guided wave for screening inaccessible runs, and MFL for tank floors.
Governing codes and standards
API 510 for pressure vessels, API 570 for piping, API 653 for storage tanks, API 580 and 581 for risk-based inspection, API 579 for fitness-for-service, API RP 571 for damage mechanisms, and ASME Section V and Section VIII throughout.
What makes this sector different
Inspection intervals derive from measured corrosion rate and remaining life rather than a fixed calendar, which makes the quality of the thickness data decisive. Readings that cannot be proven to come from the same corrosion monitoring location cannot support a defensible interval.
The Seattle asset base
Seattle is the headquarters of Boeing Commercial Airplanes (Everett 737/747/767/777/787 fabrication), Phillips 66 Ferndale Refinery (105,000 bpd), Andeavor/Marathon Anacortes Refinery (120,000 bpd), and BP Cherry Point Refinery (236,000 bpd) at the strategic Strait of Juan de Fuca corridor. Trans Mountain Pipeline's Westridge marine terminal and the Olympic Pipeline product distribution network drive PHMSA integrity-management work. The combination of Boeing's NAS 410 aerospace NDT (composites and metallics), Cascadia subduction-zone seismic risk, and the maritime corrosion environment make Seattle a uniquely diverse digital twin market.
How the work is controlled
Agree personnel qualification, equipment checks, procedure revision and review responsibilities for the examination. Retain those records with the results and coverage limitations.
Related: ASNT Level III consulting · NDT training and certification · inspection management software · asset integrity management software. Request a quote for Seattle.
Oil & gas NDT beyond Seattle
This page covers oil & gas inspection in Seattle. The sector-wide picture sits on the national pages: oil & gas NDT consulting covers programme authority — written practices, procedure approval, audit defence — in this sector's regime; and oil & gas NDT training covers the methods this sector certifies in and the career path into it.