Weld Inspection Services in San Francisco 2026 — ASNT Level III Led

Atlantis NDT delivers weld inspection services in San Francisco. Expert ASNT NDT Level II + III certified inspectors using UT (incl. PAUT + TOFD + LRUT), RT (incl. DR + CR + real-time), MT (wet-fluorescent + dry-visible), PT, ET (incl. ECA), VT, AE, IRT, LT — comprehensive inspection coverage with code-compliant reporting. San Francisco facilities in the tech manufacturing, refining & marine sectors require rigorous weld inspection services. Bay Area industrial & energy specialists. The inspection team assigned to San Francisco projects holds ASNT Level III certified qualifications.

Weld Inspection Services Scope

Weld inspection covers: butt, fillet, socket, and overlay welds per AWS D1.1 + ASME Section IX; pipeline girth welds per API 1104; pressure-vessel and piping welds per ASME B&PV Section VIII + B31.3. Full-penetration volumetric examination (RT/UT/PAUT/TOFD) plus surface examination (MT/PT/VT) at root, intermediate, and final-cap stages. Atlantis NDT Level III approves every Procedure + signs off final disposition + audit-ready records via Atlantis NDT ERP.

Code + Compliance

Weld Inspection Services per: ASME B&PV Sections V + VIII + IX + XI; ASME B31 piping series; API 510 + 570 + 571 + 579 + 580 + 581 + 653 + 1104 + 1169; ASTM E-series; ISO 17635/17636/17640; AWS D1.1/3.6; IACS Rec-20 marine; NACE MR0175 + MR0103 sour-service. Audit-ready records per ISO 9001:2015 + ISO 17020 + ISO 17025.

Atlantis NDT Stack Integration in San Francisco

Weld Inspection Services in San Francisco integrates with the full Atlantis NDT stack: ERP + Digital Twin platform + Reporting Software + LMS + Academy + 3D Scanning. Affordable, accessible, fully customizable.

Free Consultation

Atlantis NDT publishes no pricing — varies by region + scope. Request your free 30-minute consultation. Tailored San Francisco quote within 24 hours. See also verticals, San Francisco ERP, San Francisco training, San Francisco consulting.

What weld inspection involves

Weld inspection verifies that a joint meets the acceptance criteria of the governing construction code, using methods selected for the defect types credible in that joint configuration and material.

Scope of work

Visual examination of profile, undercut, reinforcement and surface condition to a written procedure
Radiography or ultrasonic examination of weld volume, including phased array and TOFD on thicker sections
Magnetic particle or penetrant examination for surface-breaking indications
Welder and procedure qualification record verification against ASME Section IX
Positive material identification where material substitution is a risk

Governing codes

ASME Section VIII and Section IX, ASME B31.1 and B31.3, AWS D1.1, API 1104, and ASME Section V for the examination methods themselves.

The San Francisco asset base

The San Francisco Bay Area hosts Chevron's corporate headquarters in San Ramon, Chevron Richmond Refinery (245,000 bpd), Phillips 66 Rodeo (now being converted to renewable diesel), Marathon Martinez (the largest US renewable-fuels conversion project), and Valero Benicia. The transition from petroleum to renewable diesel — at Marathon Martinez (48,000 bpd) and Phillips 66 Rodeo (50,000 bpd) — requires extensive pressure-equipment re-qualification under new feedstock conditions. CARB low-carbon-fuel standards, BAAQMD rule 12-16 refinery emission limits, and California AB 1647 inspection requirements drive systematic digital twin adoption.

How the work is controlled

Every examination carries its own evidence chain: the technician's certification for the method and level under ASNT SNT-TC-1A or ISO 9712, current on the day of inspection; the calibration status of instruments, probes, wedges and reference blocks, traceable under ISO 17025; and the revision of the procedure and technique sheet in force at the time. An ASNT NDT Level III reviews and signs the final disposition. That bundle is what a client or accreditation audit examines, and it is recorded as the work happens rather than assembled afterwards.

What you receive

A report in your required format, with findings located against the component and, where relevant, against a persistent corrosion monitoring location so trends stay continuous between campaigns
Raw data in the instrument-native format plus an open export, so the dataset outlives any single supplier relationship
The procedure revision, technician certification state and instrument calibration status applicable at the time of examination
Where a finding affects continued service, the specific code clause governing the acceptance decision