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By Richard Hepworth, President of Trelleborg’s marine systems operation

Trelleborg’s marine systems operation in Qingdao has received International Electrotechnical Commission Explosive (IECEx) certification for the manufacture of explosion-proof equipment. As a result, Trelleborg is able to completely manufacture and calibrate its Quick Release Hook (QRH) Load Cells in-house, ensuring complete control over manufacturing, calibration and quality processes.

While many QRH manufacturers outsource the machining of their Load Cells, we’ve long invested in our in-house facilities. Housing state-of-the-art CNC machines, gauging equipment and a calibration instrument, our Qingdao factory enables us to manufacture and calibrate Load Cells for our entire product range in-house, meaning we have full control over the design and quality of everything we produce – something no other QRH manufacturer is able to guarantee.

Trelleborg’s Load Cells, which are fitted within QRHs to measure mooring line load tension, have also received IECEx certification for use in oil and gas facilities with a local temperature range of -60 °C to +60 °C. This follows a significant redesign of the Load Cells, which saw the elimination of moisture entry points to extend life expectancy and the temperature range at which they can be successfully deployed.

While many QRH Load Cell manufacturers are IECEx certified, their Load Cells are only certified for operation in facilities with a local temperature range of -20 °C to +60 °C. As a result, Trelleborg’s extended temperature range means that it is globally the only QRH manufacturer capable of guaranteeing hazardous area safety for mooring applications in locations across countries such as Russia and Canada to name but two. In these countries it is not uncommon for temperatures to drop below -20 °C.

Installed since 1972 at facilities worldwide, Trelleborg’s QRHs enable mooring lines to be safely secured, quickly and easily released even when loaded to their safe working load limit. With sizes and configurations to suit all applications, their field proven features enhance safety, reliability, ease of use and ensure compliance to international standards.

To find out more out Trelleborg’s QRH, visit:



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