Offshore Operations
ยป can introduce instability that is difficult to contain once it begins to propagate. Operators are therefore being forced to reassess how these components are managed. Maintenance can no longer be viewed as a periodic intervention. It becomes part of a continuous process that shapes how the asset performs over time, influencing both reliability and operational flexibility.
The limits of reactive maintenance Reactive maintenance has historically been embedded in offshore operations, in part because of the constraints imposed by the environment. Access is difficult, intervention is expensive, and shutting down production has always carried a significant cost. Under these conditions, equipment has often been allowed to run until performance degradation becomes unavoidable. That approach is increasingly difficult to sustain. The cost of unplanned shutdowns has escalated, not only through lost production but through the complexity involved in stabilising systems once they have been interrupted. In high pressure environments, failure rarely remains localised. It can affect multiple parts of the process chain, extend downtime and increase the effort required to restore normal operation. Reactive maintenance concentrates risk into a single point in time. It forces operators into situations where decisions must be made quickly, often with incomplete information and limited options. A more proactive approach distributes that risk, allowing intervention to be planned and aligned with broader operational objectives. This shift is not simply about acting earlier. It reflects a deeper change in how operators understand the behaviour of their assets. Maintenance becomes informed by how equipment performs under real operating conditions, rather than how it was expected to perform when it was first installed. Design, operation, and maintenance begin to converge, creating a more integrated approach to asset management.
The influence of compact heat exchanger technology Printed circuit heat exchangers( PCHE) represent a significant evolution in heat transfer technology, particularly in applications where high pressure, high temperature, and space constraints intersect. Their compact form factor and high thermal efficiency allow them to operate effectively in environments where traditional exchangers would struggle to deliver comparable performance. PCHE technology has seen decades of operational experience in the global offshore industry, proving the compactness and performance greatly outweigh the risk of fouling when proactively maintained. The microchannel design provides an extensive heat transfer surface within a confined volume, enabling efficient energy exchange even under demanding
process conditions. Diffusion bonding ensures structural integrity, allowing these exchangers to withstand pressures and temperatures that would challenge conventional designs. However, these advantages introduce new considerations for operators. Unlike traditional exchangers, which are often available as standardised products with relatively short lead times, printed circuit heat exchangers are designed bespoke for specific process applications. Each unit is engineered to meet precise operational requirements, which means that a replacement cannot be treated as a routine procurement exercise. Lead times for new units can extend to many months, reflecting the complexity of the manufacturing process. Plate etching and diffusion bonding are inherently time-intensive and cannot be compressed without risk of affecting quality. This creates a structural constraint that directly influences maintenance strategy; where availability is a valuable attribute. Operators can no longer assume that replacement static equipment will be available when needed. Instead, maintenance decisions must account for the time required to manufacture and deliver new equipment; fundamentally changing how lifecycle planning is approached, linking operational decisions more closely to supply chain realities.
Strategic spares as operational insurance In this context, the concept of strategic spares takes on greater significance. Where replacement lead times are extended and immediate intervention is complex, having a preserved unit available for immediate deployment becomes a critical element of operational resilience.
Figure 2. Core surface damage on a Heatric PCHE following improper cleaning by non-OEM contractors. Image courtesy of Parker Hannifin.
46 Heat Exchanger World October 2026 www. heat-exchanger-world. com