The programme will also assess a new primary method of weld inspection ultrasonic manual phased array testing. This method will be employed and compared in conjunction with the existing methods (visual and magnetic particle) to inspect the finished welds. This will give a higher probability of the detection of weld defects and will provide enhanced confidence in weld quality.
From a safety and environmental point of view longer working hours increases the risk of occupational health hazards to the work crew due to arc radiation, fatigue, exposure to atmospheric pollutants, noise, etc. The longer the welding operation continues increases the risk of accidental damage to the in-service pipeline and increases operational constraints to the gas network.
If successful, the introduction of a semi-mechanised welding process, coupled with improved NDE weld assessment has considerable potential as it offers an innovative solution increasing the efficiency of network modifications and new customer connections.