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  1. Applied Ultrasonics
13 November 2013

Semi-Submersible Lifecycle Optimisation and Procedure Qualification

A large multinational offshore drilling company was facing a major maintenance overhaul for a semi-submersible. The company reached out to Applied Ultrasonics for a solution to minimise hydrogen embrittlement cracking and to ensure optimum weld quality assurance was maintained on critical structures and weld joints.

Applied Ultrasonics’ Engineering Services group collaborated with the drilling company to develop 25 weld Procedure Qualification Records (PQRs).

After approval of the PQRs, Applied Ultrasonics deployed a team of certified weld inspectors and Esonix UIT operators and inspectors to the shipyard for application of UIT and Quality Assurance. Applied Ultrasonics’ team remained onsite for the entire duration of the 40-day maintenance overhaul.

Noble Drilling retained Applied Ultrasonics to employ ultrasonic impact technology to treat the structure of one of their ABS classified semi-submersible offshore drilling rigs deployed...
It is commonly observed that complex fabricated structures subject to fatigue loading fail at the welded joints. Some problems can be corrected by proper detail...
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