The invention relates to a scaffolding arrangement with a scaffolding assembled from individual scaffolding components for internal construction or maintenance work within a coker drum standing upright on the ground and which has a lower end portion with a cross-section which tapers in the direction of the longitudinal axis of the drum towards a closable opening at the lower end of the coker drum, the scaffolding comprising: a support section with several support posts each having a lower and an upper end, the support posts, with their lower ends being supported outside of the coker drum on the ground and each of them, through the opening provided on the lower end of the coker, extending in a vertical direction into the coker drum, wherein the support section comprises several support posts spaced from one another, a support frame comprising a plurality of support beams which are detachably connected to one another, the support frame being attached to and supported by said support section, a first working platform which is arranged on top of the support frame, the first working platform being preferably located within the tapered lower end portion of the coker drum; and a scaffold tower section having one or more further working platforms which is/are each arranged in an axial direction above the first working platform inside the coker drum. The vertical loads of the scaffolding as a whole, are solely transferred to the ground via the said support section of the scaffolding, which is fully self-supported. The invention further relates to a scaffolding for an aforesaid scaffolding arrangement (FIG. 1)