Below is a picture of a Diesel driven ATEX / Norskok HPU suitable for Zone 2 operation. This power unit has been operated a few times on the Troll platform. For that reason it has been building in conformity with the Norwegian NORSOK Z-015 regulation.
Our customer wanted a 100% redundant power unit. So, this powerpack has 2 engine / pump combinations, 2 diesel tanks, double filtration and double controls – but the hydraulic tank is shared in this design.
It is based on 2 Caterpillar C7 engines converted to Zone 2 operation under NORSOK standards.