This publication provides introductory technical guidance for civil engineers, structural engineers and other professional engineers and construction managers interested in inspection of details and welding of steel hydraulic structures such as those associated with dams, locks and flood control structures. Here is what is discussed: 1. INTRODUCTION 2. PURPOSE OF INSPECTION 3. INSPECTION PROCEDURES 4. INSPECTOR QUALIFICATIONS 5. SUMMARY OF NDT METHODS 6. DISCONTINUITY ACCEPTANCE CRITERIA FOR WELDMENTS 7. MATERIAL AND WELD TESTING.