Radiography Testing (RT) Services

Radiography Testing (RT) is a powerful non-destructive testing (NDT) technique that utilizes X-rays or gamma rays to penetrate materials and reveal internal flaws without damaging the component. This method ensures structural integrity, safety compliance, and extended equipment life across various industries.

How It Works

Radiographic testing involves directing a controlled beam of ionizing radiation (X-ray or gamma ray) through the component onto a radiographic film or digital detector on the opposite side. Variations in material density or internal discontinuities such as cracks, porosity, lack of fusion, or inclusions are revealed as differences in image contrast, allowing for accurate flaw identification.

Applications of Radiography Testing

Welds and Joints

Radiography is widely used to inspect butt welds, fillet welds, and other structural welds for:

Incomplete penetration or fusion
Internal cracks or slag inclusion
Porosity and blow holes
Misalignments

Pipelines and Piping Systems

Used extensively in oil & gas, chemical, and water distribution industries, RT ensures:

Weld integrity in pipeline joints
Detection of internal corrosion or erosion
Identification of stress-induced defects

Pressure Vessels, Heat Exchangers, and Critical Equipment

For high-pressure environments, RT verifies structural soundness by checking:

Weld seams in pressure boundaries
Tube-to-tube sheet joints
Critical zones susceptible to fatigue or creep

Storage Tanks and Spheres

Essential in tank fabrication and maintenance:

Spot checks on shell welds and nozzle joints
Evaluation of internal defects in load-bearing areas
Periodic inspection during shutdowns or regulatory audits

Standards & Compliance

All radiographic inspections are carried out by certified personnel as per ASNT SNT-TC-1A, ISO 9712, or equivalent certification schemes.

Radiography Testing is performed in accordance with national and international codes and standards, including but not limited to:

ASME Section V & VIII
ASTM E94 / E1030 / E1742
ISO 17636
API 650 / 653
EN ISO 5579

Key Advantages

High accuracy in internal flaw detection
Permanent inspection records (film or digital)
Applicable to a wide range of materials and thicknesses
Minimal surface preparation required

Deliverables

Clients receive a detailed inspection report, including:

Radiographic images (film or digital)
Indication and evaluation of flaws
Interpretation based on applicable codes
Acceptance/rejection criteria summary

Safety Measures

Due to the use of ionizing radiation, strict adherence to radiation safety protocols is maintained, including:

Controlled access zones
Trained and licensed radiographers
Regulatory compliance with Bhabha Atomic Research Centre (BARC) / AERB guidelines (India-specific, modify based on location)

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