AUT on Subsea CRA Pipeline

15/11/18

Bureau Veritas Australia was engaged by Qatar Petroleum to assist in performing Automated Ultrasonic Testing (AUT) on a 2.6km Subsea pipeline connecting their existing offshore platform to a new platform. The new 20” pipeline consist of a 28mm thickness of carbon steel and 3mm of Inconel 625 internal lining. The material of the girth welds is made of Inconel 625 Corrosion Resistance Alloy (CRA).

Ultrasonic testing of dissimilar girth welds in CRA-girth welds is very challenging. When applied to CRA pipelines, the advanced ultrasonic techniques can present significant limitations, therefore additional advanced techniques have to be used to evaluate the weld integrity.

On the request of Qatar Petroleum, a Bureau Veritas AUT specialist was sent to China to assist the EPCI contractor to develop and validate a reliable AUT test procedure.  To evaluate the accuracy of the AUT system metallurgical macros examinations were carried out on nominated defects to determine defect characterisation, one of Bureau Veritas’ principal metallurgists managed & reviewed all results.

The AUT validated technique uses a combination of Zone-Discriminated Phased Array Ultrasonic Testing, ToFD, Creeping Wave Ultrasonic Testing and TRL Ultrasonic Testing to ensure the maximum Probability of Detection and sizing accuracy of defects.

After the successful completion of the procedure development and validation, two Bureau Veritas AUT specialists from Australia were sent to Qatar to supervise and monitor the AUT activity during the welding and pipe laying in the sea bed. Bureau Veritas’ Hamid Fard from the Brisbane office and Ronald Reyes from the Perth office enjoyed the beautiful sunrise and sunset on the barge in Persian Gulf while they were busy with AUT.

To find out more on how Bureau Veritas Australia can assist in your AUT requirements, please contact one of our experts today.


Hamid Fard
National Technical Manager - Industry Pacific
hamid.fard@au.bureauveritas.com  

Contact us

Bureau Veritas

+61 (0) 3 9922 0700

Send an e-mail
Share on :
  • Algeria
  • Angola
  • Argentina
  • Armenia
  • Australia
  • Austria
  • Azerbaijan
  • Bahamas
  • Bahrain
  • Bangladesh
  • Barbados
  • Belarus
  • Belgium
  • Benin
  • Bermuda
  • Bolivia
  • Bosnia and Herzegovina
  • Botswana
  • Brazil
  • Brunei
  • Bulgaria
  • Burkina-Faso
  • Burundi
  • Cambodia
  • Cameroon
  • Canada
  • Cape Verde Islands
  • Central African Republic
  • Chad
  • Chile
  • China (Peoples' Republic of)
  • Colombia
  • Congo
  • Congo (Democratic Republic of the)
  • Costa Rica
  • Cote d'Ivoire
  • Croatia
  • Cuba
  • Curacao
  • Czech Republic
  • Denmark
  • Djibouti
  • Dominican Republic
  • Ecuador
  • Egypt
  • El Salvador
  • Equatorial Guinea
  • Eritrea
  • Estonia
  • Ethiopia
  • Fidji
  • Finland
  • France
  • French West Indies
  • Gabon
  • Georgia
  • Germany
  • Ghana
  • Gibraltar
  • Greece
  • Greenland
  • Guatemala
  • Guinea
  • Guinea Bissau
  • Honduras
  • Hungary
  • Iceland
  • India
  • Indonesia
  • Iraq
  • Israel
  • Italy
  • Japan
  • Jordan
  • Kazakhstan
  • Kenya
  • Korea (South)
  • Kuwait
  • Latvia
  • Lebanon
  • Liberia
  • Libya
  • Lithuania
  • Luxembourg
  • Madagascar
  • Malawi
  • Malaysia
  • Mali
  • Malta
  • Mauritania
  • Mexico
  • Montenegro
  • Morocco
  • Mozambique
  • Myanmar
  • Namibia
  • Netherlands
  • Netherlands Antilles
  • New Zealand
  • Nicaragua
  • Niger
  • Nigeria
  • Norway
  • Oman
  • Pakistan
  • Panama
  • Paraguay
  • Peru
  • Philippines
  • Poland
  • Portugal
  • Puerto Rico
  • Qatar
  • Romania
  • Russia
  • Rwanda
  • Saint- Pierre & Miquelon
  • Saudi Arabia
  • Senegal
  • Serbia
  • Seychelles
  • Sierra Leone
  • Singapore
  • Slovakia
  • Slovenia
  • Somalia
  • South Africa (Rep.)
  • Spain
  • Sri Lanka
  • Suriname
  • Sweden
  • Switzerland
  • Syria
  • Taiwan
  • Tanzania (United Republic of)
  • Thailand
  • Togo
  • Trinidad & Tobago
  • Tunisia
  • Turkey
  • Turkmenistan
  • Uganda
  • Ukraine
  • United Arab Emirates
  • United Kingdom
  • United States of America
  • Uruguay
  • Uzbekistan
  • Venezuela
  • Vietnam
  • Yemen
  • Zambia
  • Zimbabwe
  • Other Websites
  • Africa
  • GLOBAL WEBSITE
  • Middle East
  • South East Asia
Choose your industry, asset and / or service need
Your Industry

Your Asset

Our Services