Today id like to show some images of large task involved when safely decommissioning an oil and gas rig. The task is called breaking containment.
Where pipework has to be cut or flanges opened, we have to prove what was inside the pipe work previously, to ensure that it is safe via a gas test.
To prove that the pipe is safe to cut a gas test is required. As the pipework has not yet been proven safe, all this is conducted under full breathing apparatus to protect the technicians drilling into the pipes from hazardous substances.