This paper, produced for SPE Offshore Europe 2015, looks at the options available to the offshore fabric maintenance engineer when it is not possible or preferable to weld and discusses viable solutions using bonding or cold welding technologies. With the continuous corrosive attack of the environment, maintaining asset integrity offshore is a key challenge for operators looking to upgrade equipment or extend operation beyond the original design life. A crucial part of this process is ensuring the asset complies with all safety regulations, often requiring repair of the existing structure and new equipment installations. When carrying out such work, alternatives to welding or hot work offer significant advantages to the operator, for example, from a cost and scheduling perspective and for this reason cold bonding using advanced composite adhesives can often be considered.

The paper aims to provide relevant information and data for reference by detailing case histories, from the initial design stage to installation and on-going inspection. Examples include safety critical equipment, such as handrails and accommodation modules as well as structural reinforcement to roofing and decks. In addition to the design of the bonded structures and joints, the paper also details other aspects to consider such as ongoing inspection and fire safety. By presenting appropriate test data demonstrating performance criteria the paper will explore the capabilities of modern composites to offer a variety of solutions for cold welding equipment. With the inclusion of case histories and physical test data, the paper endeavours to provide advice and guidance on the best practise when designing and installing equipment using composite technologies.

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