Radiographic Testing in San Francisco
Ionising-radiation imaging (X-ray or gamma) of internal weld structure on film or digital detector.
BAAQMD requires inspection records to be defensible at unannounced audits — every instrument calibration certificate has to be retrievable in minutes.
How Radiographic Testing works
A radiation source (X-ray tube, Ir-192 or Co-60) projects through the test piece onto a film or DDA. Differential absorption maps internal density variations — porosity, slag, cracks, lack of fusion — onto the recorded image.
RT in San Francisco
Radiographic Testing in San Francisco is most often pulled into scope when refining (bay area) or aerospace operators need API 510 / 570-grade evidence that an asset is fit for continued service. The recurring sites — Chevron Richmond Refinery and Marathon Martinez Refinery — write RT into pre-job inspection plans because ionising-radiation imaging (x-ray or gamma) of internal weld structure on film or digital detector. Local contractors mobilise calibrated equipment, current ASNT Level II / III credentials, and procedure packages tied to ASME Section V and ASTM E94.
Quick facts
- Method: RT — Radiographic Testing
- Service area: San Francisco, CA
- Primary industries: Refining (Bay Area), Aerospace
- Key standards: ASME Section V, ASTM E94
Where RT shows up on San Francisco jobs
Industry relevance
Refining (Bay Area) and Aerospace operators in San Francisco pull RT into routine and turnaround scopes. The named recurring sites include Chevron Richmond Refinery and Marathon Martinez Refinery.
Acceptance criteria are written against API 510 / 570 and ratified at Level III sign-off for procedure qualification.
Compliance and safety
Radiographic Testing inspections in San Francisco reference ASME Section V, ASTM E94, ASTM E1032. Site-specific qualification matrices add operator-specific requirements on top.
Working with NDT Connect-listed providers ensures Level II/III currency, instrument-level calibration traceability, and digital record packages that survive audit retention demands.
Named San Francisco facilities served
Radiographic Testing scopes in San Francisco recur at the following operators and sites. Local contractors are pre-qualified at most of these gates.
Chevron Richmond Refinery
Refinery — RT scope routine
Marathon Martinez Refinery
Refinery — RT scope routine
PBF Martinez Refinery
Refinery — RT scope routine
Applicable standards and codes
Radiographic Testing inspections in San Francisco are written and accepted against:
ASME Section V
ASTM E94
ASTM E1032
ISO 17636
API 1104
Local code authorities
Why RT is chosen
Permanent imaging record for audit retention
Excellent at volumetric defects (porosity, inclusions)
Less operator-dependent than UT
Typical applications
- •Pipeline girth-weld inspection per API 1104
- •Pressure-vessel longitudinal and circumferential welds per ASME Section VIII
- •Casting volumetric inspection on safety-critical components
- •Corrosion-under-insulation profile imaging
Frequently asked questions
When is RT the right method in San Francisco?
RT is selected when pipeline girth-weld inspection per api 1104. In San Francisco, this is the everyday scope at sites like Chevron Richmond Refinery, where API 510 / 570 acceptance criteria drive method selection.
Which standards govern RT work in San Francisco?
Radiographic Testing inspections in San Francisco reference ASME Section V, ASTM E94, ASTM E1032, ISO 17636, API 1104. Procedure qualification typically rolls up to API 510 / 570.
What are the limitations of RT I should plan for?
Exclusion zones disrupt other site work. Two-sided access typically required. Source licensing under NRC / state regulators or international equivalents. Planar defects parallel to the beam can be missed.
Do San Francisco providers offer encoded / digital RT records?
Yes. The NDT Connect provider pool serving San Francisco delivers RT packages with encoded scans (where applicable), instrument-level calibration certificates, and Level II/III sign-off — sized to survive API 510 / 570 audit retention.
How fast can RT crews mobilise in San Francisco?
Routine RT scopes in San Francisco are typically picked up within 24–72 hours of a posted request. Turnaround and outage support is negotiated against crew rotation — post the scope to NDT Connect to receive parallel quotes from certified San Francisco providers.
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Ultrasonic Testing
UT
High-frequency sound-wave inspection for wall thickness, weld integrity and internal flaw detection.
Magnetic Particle Testing
MT
Surface and near-surface crack detection on ferromagnetic materials via magnetic flux leakage.
Liquid Penetrant Testing
PT
Capillary-action surface flaw detection on any non-porous material using dye or fluorescent penetrant.
Visual Testing
VT
Code-required direct or remote visual examination of as-fabricated and in-service surfaces.