Section 250.109 - What documents must I prepare and maintain related to welding?(a) You must submit a Welding Plan to the District Manager before you begin drilling or production activities on a lease. You may not begin welding until the District Manager has approved your plan.(b) You must keep the following at the site where welding occurs: (1) A copy of the plan and its approval letter; and(2) Drawings showing the designated safe-welding areas.