Welding

The hydrocarbon transportation and distribution industry benefits greatly from in-service welding by reducing operational disruption costs. In-service welding is used to repair internal and external defects, such as leaks, using weld deposition or sleeves (Type A or B) and hot tapping operations. If in-service welding is not possible, then sections...

In recent years, many papers have been published describing the advantages and disadvantages of the high-frequency welded (HFW) and seamless (SMLS) carbon and low-alloy steel (LAS) pipe manufacturing processes for the oil and gas industry. However, there are few published papers that compare these different manufacturing processes in a way that...

Friction stir welding procedure development was initiated on steel grades S460 G2+M and S690QL1 in plate wall thicknesses of 10 and 15mm. To tackle the challenges of the high mechanical loads on the tool as well as its premature wear, a combination of preheating and optimized weld backing set-up was implemented. The inductive preheating allowed a...

The costs of pipeline failure are immense i.e. fatalities, environmental damages, loss of revenue and reputation. EGIG and OGP provides solid evidences and causal analyses of pipeline failures. PETRONAS has a structured methodology and system in eliminating pipeline failure. Nevertheless, failures do happen on newly constructed pipelines and those...

Following the decision of TANAP management to implement the latest technology on the Construction of the Trans Anatolia Natural Gas Pipeline (TANAP), and to validate such technology by means of improvements (in schedule, cost and quality), a decision was taken to implement Engineering Critical Assessment (ECA), as a fitness for purpose approach to...