Foreword |
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xiii | |
Acknowledgments |
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xv | |
Authors |
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xvii | |
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xix | |
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1 Introduction to Failure Analysis |
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1 | (26) |
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1.1 What Is Failure Analysis? |
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1 | (1) |
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1.2 Importance of Engineering Failure Analysis |
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2 | (1) |
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1.3 Root Causes and Types of Stressors and Stresses |
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2 | (1) |
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1.4 Some Common Failure Modes |
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3 | (13) |
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4 | (1) |
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4 | (1) |
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4 | (4) |
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8 | (2) |
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10 | (2) |
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12 | (2) |
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1.4.4.1 Corrosion under Insulation |
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14 | (1) |
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1.4.4.2 Microbial Corrosion |
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15 | (1) |
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1.4.4.3 Stress Corrosion Cracking |
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15 | (1) |
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1.5 Prevention of Failures |
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16 | (11) |
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1.5.1 Design and Material Selection |
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17 | (1) |
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17 | (1) |
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18 | (2) |
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1.5.2 Manufacturing, Installation, and Quality Control |
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20 | (1) |
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20 | (1) |
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20 | (1) |
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1.5.3 Operation and Maintenance |
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21 | (1) |
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22 | (3) |
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25 | (1) |
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25 | (1) |
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25 | (2) |
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2 Failure Analysis Procedures |
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27 | (30) |
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27 | (1) |
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2.2 Obtaining Background Information |
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28 | (3) |
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2.2.1 During Site Inspection |
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28 | (2) |
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2.2.2 Post-Site Inspection |
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30 | (1) |
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2.3 Physical Examination/Testing and Chemical Analysis |
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31 | (8) |
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31 | (1) |
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2.3.2 Metallurgical Examination (and Quantification) |
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32 | (3) |
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2.3.3 Mechanical Testing and Chemical Analysis |
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35 | (2) |
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2.3.3.1 Mechanical Testing |
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37 | (1) |
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2.3.3.2 Chemical Analysis |
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38 | (1) |
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2.3.3.3 Other Tests and Physical Modeling |
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38 | (1) |
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2.4 Stress Analysis and Computer Modeling |
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39 | (5) |
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39 | (1) |
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39 | (2) |
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41 | (1) |
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2.4.3.1 Stress-Life Approach |
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41 | (1) |
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2.4.3.2 Strain-Life Approach |
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42 | (1) |
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2.4.3.3 Fracture Mechanics Approach |
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42 | (2) |
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2.4.3.4 Cumulative Damage |
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44 | (1) |
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2.4.3.5 Preliminary Qualitative Assessment |
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44 | (1) |
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44 | (13) |
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2.5.1 Objectives of a Failure Analysis Report |
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44 | (1) |
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2.5.2 General Report Structure |
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45 | (1) |
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45 | (1) |
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2.5.2.2 Executive Summary |
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45 | (1) |
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46 | (1) |
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2.5.2.4 Introduction and Background Information |
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46 | (1) |
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2.5.2.5 Work Scope and Methodology |
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46 | (1) |
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2.5.2.6 Observations and Presentation of Test Results.... |
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47 | (1) |
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47 | (1) |
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47 | (1) |
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48 | (1) |
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2.5.3 Writing Style and Content |
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48 | (1) |
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48 | (1) |
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49 | (1) |
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2.5.3.3 Disclosed Information |
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49 | (1) |
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2.5.3.4 Avoidable Mistakes |
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50 | (1) |
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2.5.3.5 Assurance of Report Quality |
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50 | (1) |
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2.5.3.6 A Final Note of Advice |
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51 | (1) |
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51 | (3) |
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54 | (1) |
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54 | (1) |
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55 | (2) |
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3 Transportation Infrastructure |
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57 | (46) |
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57 | (1) |
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3.2 Case Study 1: Welding Defects in a Rail Track |
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58 | (8) |
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58 | (2) |
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3.2.2 Method of Investigation |
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60 | (1) |
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60 | (1) |
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3.2.3.1 Macro-Examination |
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60 | (1) |
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3.2.3.2 Metallographic Examination |
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60 | (4) |
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3.2.3.3 Mechanical Testing and Stress Calculation |
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64 | (1) |
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65 | (1) |
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3.2.4.1 Validity of the Results |
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65 | (1) |
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3.2.4.2 Stress Conditions Leading to the Fracture of a Thermit Welded Joint |
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66 | (1) |
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66 | (1) |
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3.3 Case Study 2: Port Arm Problem in a (Ro-Ro) Ramp |
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66 | (15) |
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66 | (1) |
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3.3.2 Method of Investigation |
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67 | (1) |
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3.3.2.1 Macro-Examination |
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67 | (5) |
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3.3.2.2 Metallographic Examination |
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72 | (5) |
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77 | (1) |
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3.3.3.1 Nature and Direct Cause of Failure |
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77 | (1) |
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3.3.3.2 Materials of Construction |
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77 | (1) |
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3.3.3.3 Root Cause of Failure |
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78 | (2) |
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3.3.3.4 Remaining Nut Capacity |
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80 | (1) |
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80 | (1) |
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3.4 Case Study 3: Collapse of a Girder Launcher |
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81 | (20) |
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81 | (1) |
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3.4.2 Method of Investigation |
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81 | (1) |
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81 | (11) |
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3.4.2.2 Laboratory Examination |
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92 | (6) |
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98 | (1) |
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3.4.3.1 Nature and Sequence of the Failure |
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98 | (1) |
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3.4.3.2 Primary Cause of the Failure |
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98 | (1) |
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3.4.3.3 Design of the Girder and Hinge |
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98 | (1) |
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99 | (1) |
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99 | (1) |
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99 | (2) |
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Appendix 3.1 Calculations on the Capacity of the Nut |
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101 | (1) |
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101 | (1) |
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2.0 Shear Stress Area of the Threads at the Pitch Diameter |
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101 | (1) |
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3.0 Designed Load Capacity of the Threads |
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101 | (1) |
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4.0 Estimated Actual Capacity of the Threads |
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101 | (2) |
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101 | (2) |
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4 Mining and Production System |
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103 | (48) |
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103 | (1) |
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4.2 Case Study 1: CO2 Attack on Oil Well Tubing |
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104 | (16) |
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4.2.1 Background Information |
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104 | (1) |
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104 | (2) |
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4.2.3 Summary of the Findings from the Site Inspection |
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106 | (1) |
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106 | (1) |
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107 | (2) |
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109 | (2) |
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111 | (1) |
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4.2.8 Metallographic Examination |
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112 | (4) |
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116 | (2) |
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118 | (1) |
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119 | (1) |
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4.3 Case Study 2: Tin Dredge Wheel Pinion Failure |
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120 | (10) |
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4.3.1 Background Information |
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120 | (1) |
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4.3.2 Physical Examination |
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121 | (3) |
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4.3.3 Microscopic Examination |
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124 | (1) |
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125 | (1) |
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4.3.5 Discussion and Conclusion |
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126 | (3) |
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4.3.6 Prevention against Fatigue |
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129 | (1) |
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4.3.7 Prevention against Surface Wear |
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130 | (1) |
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130 | (1) |
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4.4 Case Study 3: Excessive Pin Wear in Tin Mining Dredge |
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130 | (21) |
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4.4.1 Background Information |
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130 | (1) |
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4.4.2 Specimens for Performing Hardness Tests and Micro-Examination |
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131 | (1) |
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4.4.3 Hardness Test for the Pins and Bushes |
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132 | (1) |
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4.4.4 Macro-Examination and Sulphur Printing |
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133 | (1) |
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4.4.5 Micro-Examination of Pins No. 1 and 2 |
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133 | (2) |
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4.4.6 Micro-Examination of the Bucket Bush |
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135 | (2) |
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137 | (4) |
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141 | (1) |
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141 | (2) |
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Appendix 4.1 Tin Dredge Wheel Pinion Failure |
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143 | (1) |
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143 | (1) |
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Appendix 4.2 Stresses According to BS 436 |
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144 | (1) |
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144 | (1) |
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Part 2 Calculating Strength |
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145 | (1) |
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Appendix 4.3 Stresses According to AGMA |
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145 | (1) |
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145 | (2) |
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147 | (2) |
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149 | (1) |
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149 | (1) |
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149 | (2) |
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5 Electrical Equipment Failures |
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151 | (38) |
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151 | (5) |
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5.1.1 Overview of the Electrical Network |
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151 | (1) |
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5.1.2 Insulation Integrity and Breakdown |
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152 | (1) |
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5.1.3 Switching and Protection |
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153 | (1) |
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5.1.4 Failure Analysis of Electrical Equipment |
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154 | (2) |
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5.2 Case Study 1: Failure of an On-Load Tap-Changer |
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156 | (9) |
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5.2.1 Tap-Changing Principles |
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156 | (1) |
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5.2.2 Background Information |
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157 | (1) |
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157 | (1) |
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5.2.4 Laboratory Examination |
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158 | (3) |
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5.2.5 Summary of Results and Analysis |
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161 | (3) |
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5.2.6 Most Probable Sequence of Failure and Conclusions |
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164 | (1) |
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5.3 Case Study 2: Failure of Two Induction Motors |
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165 | (10) |
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5.3.1 Background Information |
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165 | (1) |
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5.3.2 Basic Construction and Characteristics of Induction Motors |
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166 | (1) |
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167 | (3) |
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5.3.4 Summary of Results and Analysis |
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170 | (5) |
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175 | (1) |
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5.4 Case Study 3: Damage to a Transformer Due to Water Ingress |
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175 | (14) |
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5.4.1 Some Basic Principles Concerning Power Transformers |
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175 | (1) |
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5.4.2 Background Information |
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176 | (1) |
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5.4.3 Physical Inspection at the Production Factory |
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177 | (6) |
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183 | (1) |
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5.4.5 Analysis of Results and Conclusions |
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183 | (2) |
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185 | (3) |
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188 | (1) |
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188 | (1) |
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188 | (1) |
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6 Case Studies---Boilers and Boiler Components |
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189 | (44) |
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189 | (2) |
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191 | (1) |
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6.3 Case Study 1: Explosion of a Boiler in an Edible Oil Company |
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192 | (11) |
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6.3.1 Background Information |
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192 | (1) |
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6.3.2 Preliminary Considerations |
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193 | (1) |
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6.3.3 Damage to the Boiler's Shell and Furnace Tubes, and the Implications |
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194 | (2) |
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6.3.4 Damage to the Boiler Fittings, and the Implications |
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196 | (3) |
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6.3.5 Results of the Laboratory Examination, and the Implications |
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199 | (1) |
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6.3.6 Most Likely Scenario of the Failure |
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200 | (1) |
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201 | (2) |
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6.4 Case Study 2: Boiler Tube Failure at an Oil Palm Mill |
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203 | (10) |
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6.4.1 Macro-Examination and Discussion |
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203 | (2) |
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6.4.2 Laboratory Examination |
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205 | (1) |
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6.4.3 Metallographic Examination |
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206 | (5) |
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6.4.3.1 Analysis of Microstructures |
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211 | (1) |
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6.4.4 Manner of Failure and Conclusion |
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212 | (1) |
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6.5 Case Study 3: Boiler Tube Failure at a Power Plant |
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213 | (9) |
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6.5.1 Background Information |
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214 | (1) |
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214 | (1) |
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6.5.3 Metallographic Examination and Hardness Test |
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215 | (7) |
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6.5.4 Discussion and Conclusions |
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222 | (1) |
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6.6 Case Studies 1, 2, and 3: Concluding Remarks |
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222 | (11) |
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223 | (8) |
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231 | (2) |
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7 Infrastructure Failure Analysis |
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233 | (48) |
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233 | (1) |
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7.2 Case Study 1: Corrosion under Insulation of a Metal-Based Roof |
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233 | (27) |
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7.2.1 Background Information |
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233 | (3) |
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7.2.2 Identification of the Problem |
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236 | (2) |
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7.2.3 Inspection of the Roof |
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238 | (1) |
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7.2.4 Load Testing of a Model Test Bay |
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239 | (1) |
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7.2.5 Rectification of the Problems |
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240 | (1) |
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240 | (1) |
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241 | (1) |
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242 | (3) |
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7.2.7 Discussion of the Results |
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245 | (7) |
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7.2.7.1 Criteria or Conditions Statements |
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252 | (1) |
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7.2.7.2 Results from the Roof Bays |
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253 | (1) |
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254 | (5) |
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259 | (1) |
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7.3 Case Study 2: Condition Assessment and Monitoring of a College Building |
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260 | (14) |
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7.3.1 Historical Background |
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260 | (1) |
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7.3.2 Scope of Commission Works |
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260 | (1) |
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7.3.3 Description of the Administration and Academic Building |
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261 | (1) |
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7.3.4 Comprehensive Visual Inspections and Distress Mappings |
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262 | (1) |
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7.3.5 Instrumentation for Monitoring Work |
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262 | (1) |
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7.3.6 Soil and Foundation Investigation Work |
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263 | (3) |
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266 | (1) |
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7.3.8 Electronic Rebar Scanning |
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266 | (1) |
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7.3.9 Concrete Core Testing |
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266 | (1) |
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7.3.10 Discussion of the Results |
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267 | (1) |
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7.3.10.1 The Monitoring Results |
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267 | (1) |
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7.3.10.2 The Soil and Foundation Investigation |
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267 | (1) |
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7.3.10.3 The Material Testing---Rebar Scanning |
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268 | (1) |
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7.3.10.4 The Material Testing of the Core Samples |
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268 | (1) |
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7.3.11 General Structural Inspection |
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269 | (1) |
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7.3.12 Condition Assessment: Geotechnical Aspects |
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269 | (1) |
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7.3.12.1 Soil Investigation |
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270 | (1) |
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7.3.12.2 Underground Water |
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270 | (1) |
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7.3.12.3 Tap Groundwater from the Tubewells |
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270 | (1) |
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7.3.12.4 Consolidation Settlement and Possible Causes |
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270 | (1) |
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7.3.12.5 Negative Skin Friction on Pile Shafts |
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271 | (1) |
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7.3.12.6 Proposed Remedial Work |
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271 | (2) |
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7.3.13 Condition Assessment: Structural Aspects |
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273 | (1) |
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273 | (1) |
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274 | (7) |
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275 | (2) |
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277 | (1) |
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277 | (1) |
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278 | (3) |
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8 Radiation-Induced Damage |
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281 | (18) |
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281 | (1) |
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8.2 Renewed Definition of Radiation-Induced Damage |
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282 | (1) |
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8.2.1 Ionizing Radiation-Induced Damage |
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282 | (1) |
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8.2.2 Non-Ionizing Radiation-Induced Damage |
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282 | (1) |
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8.3 Physical Effects of Radiation Damage |
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283 | (3) |
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8.4 Light Intensification due to the Backscattering Effect |
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286 | (4) |
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8.5 Photon Ionization due to the Backscattering Effect |
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290 | (2) |
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8.6 Radiation Damage due to High-Speed Particles |
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292 | (1) |
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293 | (6) |
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296 | (3) |
Index |
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299 | |