Italian Welding Institute

Genova, Italy

Italian Welding Institute

Genova, Italy

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Lezzi F.,Italian Welding Institute | Costa L.,Italian Welding Institute
Welding International | Year: 2013

In recent years, analysis of the development of joining processes has resulted in the identification of two trends: the refinement and specialization of traditional processes on the one hand, and the development of novel technologies on the other hand. This dual line of trends has sometimes led to points of contact, with the development of the so-called hybrid technologies, involving the use of joining processes based on different physical principles for the creation of a single joint. The scope of this article is to provide a framework view of the state of development of conventional joining technologies with regard to shipbuilding applications. © 2013 Copyright Taylor and Francis Group, LLC.


Canale G.,IIS Service | De Marco M.,Italian Welding Institute | Pinca S.,IIS Service
Welding International | Year: 2013

The special process of welding still plays a key role in the fabrication of pressurized equipment for the energy processing and generation industry. Similarly, welding is extensively used in repair, modification and overlay/cladding procedures and during the maintenance operations for large plants. However, the harsh statistics relating to faults shows welded joints to be among the most 'at-risk' areas with regard to various active damage mechanisms. Within the framework of the management of plant risk and equipment integrity, the risk-based inspection method, with the aim of prioritizing and optimizing the inspection strategy, focuses attention on the criticality of welded joints with the framework of problems related to both simple mechanical vulnerability and physicochemical aspects such as corrosion and/or stress corrosion. The aim of this paper is to offer an overview of the interactions existing between the various active damage mechanisms in plants and welded joints in addition to indicating the criticality associated with these interactions, with the purpose of optimizing the management of plant risk and inspection strategies for resolving them. © 2013 Copyright Taylor and Francis Group, LLC.


Canale G.,IIS Service | De Marco M.,Italian Welding Institute | Pirica S.,IIS Service
Welding International | Year: 2014

The special process of welding still plays a key role in the fabrication of pressurised equipment for the energy processing and generation industry. Similarly, welding is extensively used in repair, modification and overlay/cladding procedures and during the maintenance operations for large plants. However, the harsh statistics relating to faults shows welded joints to be among the most 'at risk' areas with regard to various active damage mechanisms. Within the framework of the management of plant risk and equipment integrity, the Risk Based Inspection (RBI) method, with the aim of prioritising and optimising the inspection strategy, focusses attention on the criticality of welded joints with the framework of problems related to both simple mechanical vulnerability and physico-chemical aspects such as corrosion and/or stress corrosion. The aim of this paper is to offer an overview of the interactions existing between the various active damage mechanisms in plants and welded joints in addition to indicating the criticality associated with these interactions, with the purpose of optimising the management of plant risk and inspection strategies for resolving them. © 2014 Taylor & Francis.

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