Radiography Testing (RT) Services in Tanzania
X-ray and gamma ray radiography of welds and components for plant and pipeline projects, carried out to [ASME V / API 1104 / ISO 17636] by [Level II / III] certified technicians.
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- Methods: X-ray and gamma ray [Ir-192, Se-75 / confirm]
- Used on: pipelines, plant piping, vessels, tanks, castings
- Codes: [ASME V, API 1104, ISO 17636]
- Personnel: [ISO 9712 Level II / III]
- Records: [film / digital] radiographs and signed report
See inside the weld, with a permanent record
Radiography passes X-rays or gamma rays through a weld or component onto film or a digital detector. Internal flaws show up as changes in density, giving a permanent image that your client, authority or third-party inspector can review.
We provide RT for [oil and gas, pipeline, power, marine and fabrication] projects in Tanzania, Kenya, Zambia and Rwanda.
Our radiography methods
X-ray radiography
Controllable source that switches off at the end of the exposure. Suited to [thin to medium] sections and workshop or fabrication yard work.
Gamma ray radiography
Portable isotope sources [Ir-192, Se-75] for field and pipeline work where power or space is limited, including panoramic exposures on pipe circumferences.
Digital / computed radiography
[Reusable imaging plates or detectors for faster results and electronic storage. Confirm what you offer.]
Applications
- Pipeline girth welds
- Plant and process piping
- Pressure vessels and boilers
- Storage tank shell and bottom welds
- Structural steel welds
- Castings and forgings
Typical findings
- Porosity and gas pockets
- Slag and tungsten inclusions
- Incomplete penetration and root defects
- Burn-through and excess penetration
- Cracks, when aligned with the beam
- Voids and shrinkage in castings
Our radiography process
Plan
Review drawings, weld list, thickness, access and code requirements.
Secure
Set up the controlled area, barriers and warning signs with your safety team.
Expose
Position source and film or detector, with image quality indicators.
Interpret
Radiographs are evaluated against the code acceptance criteria.
Report
Signed report with accept/reject results and weld map.
Safe, controlled and compliant
Radiography is only done under strict control. Our procedures protect your people and the public.
- Controlled area with barriers, signs and a safe distance set by survey
- Calibrated survey meters and personal dosimeters
- Source handling by [trained, certified] radiographers
- Work and sources licensed by [Tanzania Atomic Energy Commission / confirm]
- Coordination with your permit-to-work system
Codes and standards we work to
| Standard | Typical use |
|---|---|
| ASME BPVC Section V, Article 2 [confirm] | Radiographic examination technique requirements |
| API 1104 [confirm] | Pipeline girth weld inspection and acceptance |
| ISO 17636-1 / -2 [confirm] | Radiographic testing of fusion-welded joints (film / digital) |
| ASME B31.3 / B31.4 / B31.8 [confirm] | Acceptance criteria for process piping and pipelines |
| ISO 9712 [confirm] | Qualification and certification of NDT personnel |
Only list the standards your procedures and personnel are approved for.
Radiography compared with other methods
| Method | Best at | Limits |
|---|---|---|
| Radiography (RT) | Volumetric flaws, permanent image | Radiation controls, access to both sides, planar flaws can be missed |
| Ultrasonic / phased array | Planar flaws, thickness, no radiation | Needs skilled interpretation and surface preparation |
| TOFD | Flaw height sizing | Dead zones near the surface |
| Magnetic particle / dye penetrant | Surface flaws | Surface-breaking only |
Not sure which method fits your job? We can recommend one, or combine methods for full coverage. See our advanced NDT services.
Reports and records
- Radiographs, [film or digital files]
- Signed RT report with accept/reject results
- Weld map and identification of each joint
- Technique sheet and image quality indicator results
Where we work
- Oil and gas, pipelines and storage tanks
- Petrochemical and power plants
- Marine and offshore fabrication
- Structural steel and general fabrication
Frequently asked questions
Is radiography safe?
Yes, when it is controlled. We set up a controlled area, use survey meters and dosimeters, and follow [TAEC] regulations and your site safety rules.
Can radiography find every defect?
RT is very good at porosity, slag and incomplete penetration. Tight cracks and lack of fusion can be missed if they are not aligned with the beam, so we can combine RT with UT or phased array.
How long does a job take?
[It depends on the number of welds, thickness and access. We give a time estimate with the quote.]
Do you provide film or digital results?
[Confirm: film, computed radiography or both.]
Which countries do you cover?
[Tanzania, Kenya, Zambia and Rwanda.]
Need radiography testing?
Tell us the project, number of welds, thickness and code. We will reply with a quote and schedule.
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