This image shows a maintenance crew at an oil and gas wellsite preparing to perform repairs on a large production water tank during a scheduled maintenance period. One worker has already climbed down into the tank through a narrow top hatch, carrying tools to fix a leaking valve at the bottom. Two coworkers stand at the opening above, watching him descend. There is no atmospheric monitoring equipment visible anywhere on site. No confined space entry permit is posted. No retrieval system, harness, or rescue equipment is staged near the entry point. The air inside the tank is […]