Industrial Radiography Testing in Chennai
Volumetric internal inspection using X-ray or gamma radiation to produce permanent radiographic film records of weld integrity and internal structure in Chennai.
Certified Level II inspector performing Radiography Testing. LEVEL II / III
Overview of Radiography Testing (RT)
Detailed testing capabilities provided by NP Technical Services Pvt. Ltd. from our West Tambaram, Chennai facility.
Radiography Testing utilizes ionizing radiation to penetrate metallic components. Differential absorption based on material thickness and density creates an internal shadow image on radiographic film, revealing internal voids, porosity, and inclusions.
A radioactive isotope source (such as Iridium-192 or Selenium-75) or X-ray generator emits penetrating radiation through the weld specimen onto industrial radiographic film. Thinner or less dense flaw areas absorb less radiation, exposing the film more and producing dark shadow images that certified Level II interpreters evaluate under calibrated densitometers.
Certified Technical Execution Across Tamil Nadu
Every Radiography Testing assignment is executed adhering to approved written procedures, client inspection test plans (ITP), and certified Level II & Level III oversight.
Radiography Testing Techniques Deployed
Calibrated inspection procedures tailored for specific geometries, welded joint configurations, and material alloys.
Single Wall Single Image (SWSI)
Optimal radiographic arrangement for large-diameter storage tanks, plate welds, and accessible pressure vessel longitudinal seams.
Double Wall Single Image (DWSI)
Internal panoramic or offset radiation exposure for medium-to-large piping and cylindrical shells.
Double Wall Double Image (DWDI / Elliptical)
Elliptical exposure technique for small-bore tubes (up to 3.5 inches) showing both source-side and film-side welds in a single shot.
Gamma & Directional X-Ray Examination
High-output field radiography for cross-country gas pipelines and critical plant turnaround welds.
Primary Inspection Applications
Radiography Testing is deployed across raw stock, fabricated structures, and operational plant equipment.
- High-pressure steam piping & cross-country pipeline girth welds
- Boiler drum longitudinal & circumferential seams
- Heavy alloy castings for internal shrinkage, tears & core gas voids
- Pressure vessel nozzle attachments & manifold headers
Equipment & Standards Used
All instruments and consumables are verified and calibrated prior to each inspection shift.
- AERB Approved Industrial Gamma Radiography Cameras (Ir-192 / Se-75)
- Industrial High-Definition Radiographic Film & Vacuum Cassettes
- Calibrated Optical Densitometers & High-Intensity Film Viewers
- Lead Hole & Wire Type Image Quality Indicators (IQI / Penetrameters)
Radiography Testing FAQs
Common questions regarding radiography testing procedures, technician qualifications, and on-site testing in Chennai.
NP Tech follows strict AERB regulatory protocols including physical cordons, radiation survey meters, collimators, audible alarms, and certified Radiological Safety Officers (RSO) during field exposures.
Related Non-Destructive Testing Methods
Combine Radiography Testing with complementary surface or volumetric testing services for complete quality assurance.
Ultrasonic Testing
Ultrasonic Testing & Thickness Gauging (UT)
High-frequency acoustic wave inspection for detecting internal volumetric flaws, laminar discontinuities, and accurate residual wall thickness measurement in Chennai.
Phased Array Ultrasonic Testing
Phased Array Ultrasonic Testing (PAUT)
Advanced multi-element ultrasonic inspection capable of electronic beam steering, sectorial scanning, and high-resolution flaw imaging in Chennai.
Time of Flight Diffraction
Time of Flight Diffraction (TOFD)
Accurate diffraction-based ultrasonic method for precise vertical flaw sizing and rapid volumetric weld screening in Chennai.
Request Radiography Testing in Chennai
Submit component drawings, weld specifications, or project turnaround schedules for prompt review by our certified Level II / Level III inspectors.