![HALT test rig for offshore nacelle testing in operation HALT test rig for offshore nacelle testing in operation](/images/stories/News/News2021/HALT_test_rig_for_offshore_nacelle_testing_in_operation.jpg)
The new HALT XL test bench is mounted on a 30-metre-long concrete base and it features a 25MW drive motor that is 15 metres in diameter and the system can deliver a tilt moment of 85 million Nm. The HALT XL test bench at LORC utilises a stepped stress-testing approach that exposes prototype products to diverse accelerated stresses to discover the physical limitations of a design and ascertain product reliability. The prototypes can be exposed to all the stresses and strains they could reasonably be expected to endure during a 20-year lifetime.