LRUT

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Long Range Ultrasonic Testing (LRUT)

LRUT for the in-service surveying of metal loss in pipelines and piping was developed in the 1990’s through a UK Technology collaboration of Imperial College and the Research Institute TWI which culminated in the release of the first Guided Wave testing product Teletest® in 1998. This technology was further improved over the next 20 years until the brand was sold to Eddyfi Technologies in September 2017. The impetus for the development of LRUT is that ultrasonic thickness checks for corrosion, erosion, etc. are very localized, in that they only measure the thickness of the area under the UT transducer.

The LRUT technique uses low frequency guided ultrasound travelling along the pipe providing 100% coverage of the pipe wall without moving the transducer tool. Depending on pipe conditions, up to 350 metres of pipework can be inspected from a single test point. LRUT reduces the costs of gaining access and avoiding extensive removal of insulation (where present). The whole pipe wall is tested, achieving a 100% examination (including areas such as at clamps, and sleeved or buried pipes).

APPLICATIONS OF LRUT

Long-range ultrasonic testing using guided waves is one of the few test methods which is able to examine 100% volume of pipe wall from one tool location so has found widespread applications in non-piggable pipeline where efficient inspection coverage is required or the pipeline in question has hard to reach areas. Successful inspections have been carried out in the following applications:

Tank farm pipework

  • Long lengths of pipes
  • Insulated line
  • Link lines
  • Jetty line inspection
  • Bund wall penetrations
  • Culvert Inspection
  • Road crossings

Refinery pipework

  • Corrosion under Insulation
  • Corrosion at simple
  • Pipe-supports
  • Hot pipe inspection – max 350°C
  • Inspection of elevated pipe
  • Flare line inspection
  • Jetty pipe work

Offshore Applications

  • Corrosion under insulation
  • Riser inspection
  • Deck penetrations
  • Splash zone inspection
  • Fretting on Caissons
  • Caisson inspection
  • Topside pipework
  • Seals for deck hatches and fire seals

Other inspections

  • Road Crossings
  • River Crossings
  • Transmission lines
  • Unpiggable pipelines
  • Buried pipelines
  • Insulated Sphere legs
  • Air-soil interface

Continuous development

The development and improvement of LRUT has been rapid over the first 20 years since the first product has been commercially available. The equipment can now generate and fully utilise any of the three main Guided Wave types (longitudinal, torsional and flexural). There has also been significant developments in utilising phased-array technology making it possible to focus the ultrasound and analyse the circumferential responses of potential defects. In addition, the boundaries for inspection has increased such that the inflatable collars, modules and transducers are capable of inspecting pipe sizes up to 78” and increased temperature capability of 240°C.

PRODUCERS OF EQUIPMENT AND SYSTEMS FOR LRUT

Regarding LRUT method Casp System Sp. z o. o. is the distributor of solutions from Eddyfi Technologies company.

CONTACT

Our NDT specialists are at Your disposal.
In case of any questions regarding our offer please do not hesitate to contact us, our working hours are monday-friday, between 7:30 and 15:30

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A FEW WORDS ABOUT CASP SYSTEM SP. Z O.O.

CASP System company is a well known and respected supplier of equipment and systems from fields such as industrial automation, non destructive testing or research and development.

The company has several departments as well as widely used online stores Manometry24Czujniki24Przetworniki24Enkodery24Automatyka24, Eh24.pl. During latest years we have expanded our offer considerably and gotten a lot of experience, our personnel is well trained and specialized which is a definite strenght of our company in comparison to our competition. Our additional websites are: WzorceNDT and Aparatura Badawcza

The highest quality of the offered equipment and specialized measurement devices guarantees customer satisfaction and translates into numerous awards that we can proudly display below, for example:

Casp System Dofinansowanie
Introduction of B2B class system that automates business processes taking place between CASP system and its business Partners. The project is co-financed by European Union with funds of European Regional Development Fund.
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