Abstract: A worker platform for sandblasting a cylindrical fuel storage tank includes a lookout frame section secured to the tank top that has an arm extending radially outward beyond the tank wall and a roller assembly supporting the arm for circumferential movement about the tank. A stage is suspended by a winch from the arm, and a square cross-sectioned standpipe is captured within upper and lower square guide channels formed at the center of the stage and by a yoke at the outer extent of the arm. The standpipe has a base plate with projections or spikes to penetrate the ground. The winch moves the stage up and down with the standpipe passing vertically through the guide channels and providing stability against swinging, twisting and tilting. For circumferential movement, a pin temporarily locks the standpipe for lifting with the stage. Lookout frame embodiments are given for both solid and floating tank tops.