QAL required a 350m long gas main pipe to be painted and blasted while it remained operational for 100% of the works. As the pipework was located well above the ground and next to other operational infrastructure, the scaffold access and environmental encapsulation was intricately built around the structures, which ensured total containment and environmental compliance. The abrasive blasting was completed in these confines and painting of the protective coating was efficiently applied with an airless spraying system.