Monitoring corrosion with digital radiography
A
SGS SA - Industrial Services product story
Edited by the Engineeringtalk editorial team
Jul 2, 2009
SGS offers digital radiography combined with other non-destructive testing (NDT) methods ranging from standard to advanced NDT services.
On-stream radiographic imaging is one of the most used techniques for locating, sizing and monitoring of corrosion on piping when insulated.
In the industrial environment of refineries and chemical plants, inspections have to be performed on a variety of difficult-to-reach locations, on pipes that might be isolated and where people are working around the clock.
This is where computed radiography comes in.
The execution of digital radiography is similar to conventional radiography for the on-stream technique.
The image handling is different as a phosphor image plate is used instead of a conventional film.
The image plate stores 4,096 gray values, which can - upon read-out by using an optical scanner - be visually distributed in several numbers of grey values.
Because of this, a variety of thickness ranges can be inspected in only one image.
The images can be produced using an appreciable lower radiation dose compared with conventional radiography.
Two advantages in particular improve safety and quality.
First of all, for computed radiography (CR), weaker isotopes can be used to expose the 'films' and the other advantage is the digital readout of the wall thickness, which highly improves accuracy and reproducibility.
In addition to the reduced use of chemicals, fast archiving of images is possible and the results can be fully integrated into any AIM system to reliably monitor degradation.
CR uses an imaging plate, instead of film.
The imaging plate contains photostimulable storage phosphors, which retain the latent image.
When the imaging plate is scanned with a laser beam in the digitiser, the latent image information is released as visible light.
This light is captured and converted into a digital stream to compute the digital image.
No chemical developer is needed.
The image can be digitally enhanced for interpretation and measurements, thus a larger range of wall thicknesses can be inspected.
These images can be produced using an appreciable lower radiation dose or in less time.
Applications include: metal and plastics; insulated piping; diameter range up till 22in in special applications; during process (filled) and even at high temperatures up to 250C; problem-solving on pipelines and appendages (valves reducers).
Not what you're looking for? Search the site.
Contact SGS SA - Industrial Services
Tel (Switzerland)
Other SGS SA - Industrial Services stories
-
SGS services support Polish wind farm project
SGS has supported RWE with Owner's Representative Services in establishing its first wind farm in Poland, consisting of 18 wind turbines. -
SGS secures quality of Sines power plant
SGS Portugal has managed and supervised all quality-related activities during the upgrade of the Sines Thermal Power Plant in Portugal for the Hitachi-Cobra Consortium. -
SGS to hold non-destructive testing course
SGS, an inspection and certification company, is organising a Non-Destructive Testing (NDT) training course, with focus on the ultrasonic testing method, Time of Flight Diffraction (TOFD). -
SGS provides health and safety services
SGS SA - Industrial Services offers Health, Safety and Environment (HSE) Management services to building commissioners, main contractors and construction companies. -
SGS performs due diligence tasks for wind turbine
SGS has performed Technical Due Diligence tasks for Sky Power's manufacture of the Fuhrlander 1.5MW wind turbine in Canada.
Browse by category
-
Capital Equipment (3,511)
- Capital Equipment (1)
- Compressors and Air Treatment (537)
- Electrical hardware (131)
- Electronics Manufacturing, Tools, Instruments (192)
- Machinery and Production Equipment (1,130)
- Manufacturing Machinery and Plant Equipment (474)
- Production line blowers and fans (73)
- Robotics, Handling and Storage (973)
- Consultancy and Services (920)
-
Control and Instrumentation (5,119)
- Cabling, Conduit, Signal Conditioning (814)
- CNC and Motion Controllers (189)
- Control and Instrumentation (2)
- HMIs/Operator Interfaces (296)
- Logic Controllers, Timers and Relays (96)
- Mid-range and Large PLCs (203)
- Plant- and Machine-Wide Communications (1,202)
- Plantwide control (1,351)
- Power Supplies, Uninterruptible Power (574)
- Smaller-Sized PLCs (392)
-
Drives, Motors and Controls (3,432)
- Drives, Motors and Controls (2)
- Industrial Drives/Controls (1,290)
- Industrial Motors (501)
- Linear Drives and Motors (120)
- Precision Motors and Gears (429)
- Stepper and Servo Drives, Motors, Controls (1,088)
-
Electrical and Electronic Equipment Design (4,300)
- Batteries, chargers and circuit protection (582)
- Connectors, Terminals, Busbars, Slip Rings (716)
- Electrical and Electronic Components (649)
- Electrical and Electronic Equipment Design (3)
- Electrical and Electronic Subassemblies (374)
- Enclosures and Equipment Cooling Fans (722)
- Knobs, Handles and Enclosure Hardware (430)
- PCs and Embedded Systems (824)
-
Engineering Design Software (6,356)
- 2D CAD software (203)
- 3D CAD software (1,190)
- CAM, CNC, production management software (583)
- Data, document management software (322)
- Electrical design software (166)
- Engineering Design Software (17)
- FEA and structural analysis software (376)
- File conversion software, data capture (358)
- Fluid, thermal, noise, vibration software (339)
- Materials design and moulding design software (152)
- Maths, charting, statistics, QA software (325)
- PLM and collaboration software (663)
- Process, instrumentation, automation software (269)
- Publishing and documentation software (234)
- Rendering, visualisation, styling software (206)
- Simulation, modelling, validation software (953)
-
Engineering Industry News, Resources (6,206)
- Electronic Resources for Engineers (278)
- Engineering Business News, Views (388)
- Engineering Conferences (438)
- Engineering Education, Resources, Standards (850)
- Engineering Exhibitions, Events (575)
- Engineering Guides, Newsletters (365)
- Engineering Industry Developments, Awards (636)
- Engineering Industry News, Resources (4)
- Engineering Industry Reports, Surveys (597)
- Engineering Recruitment, Employment (219)
- Engineering Seminars (416)
- Engineering Training Courses (457)
- Health and Safety Consultancy, Software (180)
- Health and Safety Events, Training, News (285)
- Health and Safety Legislation (403)
- Health and Safety Strategy, Risk Assessment (115)
- Machine Building (4,618)
-
Materials and Processing (3,027)
- Materials and components (2,265)
- Materials and Processing (5)
- Materials processing and testing (291)
- Rapid Prototyping (466)
-
Monitoring, Measurement and Quality (5,645)
- Data Acquisition Hardware and PC I/O Boards (489)
- Data acquisition Software and Communications (505)
- Data loggers (425)
- Electrical and Electronic Testing, PAT Equipment (642)
- Form/co-ordinate, optical, vision instruments (760)
- Gauges, Indicators and Instruments (449)
- Materials testing equipment (431)
- Monitoring, Measurement and Quality (2)
- Telecomms/network test equipment, software etc (158)
- Testing and Calibration Services and Information (518)
- Testing, analysing and monitoring equipment (1,266)
-
Powertrain Design (3,707)
- Bearings (979)
- Chains and belts (333)
- Gears, brakes, couplings and engines (1,475)
- Hydraulic Components (475)
- Lubricants (441)
- Powertrain Design (3)
-
Sensors (7,271)
- Accelerometers and Vibration Sensors (448)
- Barcode Sensors (103)
- Flowmeters and Flow Sensors (642)
- Gas, Chemical, Radiation, Magnetic Sensors (290)
- Humidity and Environmental Sensors (158)
- Level Sensors and Leak Detectors (538)
- Linear Position Sensors (413)
- Loadcells, Force Sensors, Torque Sensors (727)
- Pressure sensors (639)
- Proximity Sensors (713)
- Rotary Position, Tilt and Angular Sensors (560)
- Sensors (11)
- Temperature sensors (621)
- Vision and Colour Sensors (1,408)
- Small Mechanical Components, Joining, Tools (2,039)
- Valves, Pumps, Process Hardware (3,723)
