according to the Norwegian Working Environment Authority's order No

Knee pockets in durable CORDURA® with adjustable positioning for optimal comfort

referring to fire protection measures

so it is suitable for work where there may be oil or the like on the floor

there is also text that clearly states the ban

Bluestar karabinhage, twl, alu 20kN Gulvpolish according to the Norwegian WorkingGood light aluminum carabiner, 20 kN longitudinal strength and with twistlock. Functions as a connecting link between other types of fall protection or rescue equipment. Lock opening: Twistlock 27 mm Longitudinal breaking strength: 20 kN Transversal breaking strength: 7 kN Material weight: Aluminum 95 g Approval: EN 362