CFR›Title 46›Chapter I›Part 189›Subpart 189.50 ContainsSection 189.50-1CorpusDaily eCFRDisplayed edition2026-06-12Last updated2026-06-12 Subpart 189.50—Special Operating Requirements Sections 189.50-1 § 189.50-1 Inspection and testing required when making alterations, repairs, or other such operations involving riveting, welding, burning, or like fire-producing actions. Previous 189.45 Subpart 189.45—Repairs and Alterations Next 189.55 Subpart 189.55—Plan Approval