PREVALENCE AND ROOT CAUSES OF WELDING FLAWS IN LIQUEFIED GAS DISTRIBUTION SYSTEMS: A STUDY FROM RIVERS STATE

Author(s): UeBari, S. L; & Mbuide, S. B
Page: 101 - 132
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Publisher: The Creek Journals
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Keywords: Root cause, prevalence, components, welding flaws, liquefied gas distribution and facilities

Abstract:

This study focused on the root cause and prevalence welding flaws in Liquefied Gas distribution facilities in Rivers State, Nigeria and its implication on the structural life and reliability of the facilities. Common welding defects such as surface roughness, cracking, and undercuts of welds were, therefore, detected and classified based on visual observation, material characterization, and corrosion evaluation. The comparative frequency and the division of storage vessels and pipeline structures with the presence of these flaws were studied, indicating the greatest risks in certain parts of storage facilities. By undertaking root cause analysis, it was identified that mainly the welding defects emanate from such factors as material properties, appropriate welding procedures, maintenance regimes, and environment. The use of X-ray Fluorescence (XRF) and also general, visual inspection revealed how the composition of material and corrosion affected weld performance. Qualitative data obtained through corrosion product analysis also differentiated between the varieties of corrosion developed in the welded joints and the factors that may lead to corrosion. Therefore, the findings of the current study indicate the need to abide by recommended inspection practices to contain weld defects, and enhance the durability of structures. It is recommended that future studies adopt more extensive testing techniques, examine other varieties of welding methods and further improve existing techniques with regards to maintenance, taking into account the new challenges in the gas distribution network. The findings of this research can help extend knowledge regarding efficient management of welding defects in the liquefied gas facilities, enhance decision-making outcomes and general operational safety.

Citations:

UeBari, S. L; & Mbuide, S. B "PREVALENCE AND ROOT CAUSES OF WELDING FLAWS IN LIQUEFIED GAS DISTRIBUTION SYSTEMS: A STUDY FROM RIVERS STATE" Volume 1 Issue 1 Oct, 2025