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Hot Bolt Clamp Addresses Corrosion Problem

The hot bolt clamp (HBC) system undergoes vigorous testing and checks.

Many operators have a register of flanged connections identified as having fitted stud bolts below acceptable standards and, on many occasions, in critical condition requiring urgent attention. Corroded stud bolts seriously undermine an asset’s integrity and unscheduled pressure releases can have a devastating impact on offshore operations.

In 2009, the situation prompted several operators in the United Kingdom Continental Shelf to contact Stork Technical Services regarding safety concerns related to incidents of uncontrolled pressure releases and future potential releases, as a result of severe stud bolt corrosion/failure on four-bolt flanged connections. Many of the corroded stud bolts were proving difficult to remove and replace during planned shutdown activities, because of their location and the presence of existing systems.

Stork was asked to develop a more sophisticated method of removing and replacing corroded stud bolts that would mitigate risk and improve the safety of operations and the wider asset, while simultaneously reducing operating costs and optimizing productivity.

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Hot Bolt Clamp Addresses Corrosion Problem

01 January 2014

Volume: 66 | Issue: 1

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