Cover
Foreword
Contents
Summary
1. Introduction
1.1.Background
1.2.Objective
1.3.Scope
1.4.Structure
References To Section 1
2. Evolution Of Fuel Operating Environmentand Fuel Design Changes
2.1.Evolution Of Fuel Operating Environment
2.2.Fuel Design Evolution
2.3.Fuel Types In Operation
References To Section 2
3. World Overview Of Fuel Failures From 1994 To 2006
3.1.Introduction
3.2.Coolant Activity Levels
3.3.Methodology Of Fuel Failure Rate Evaluation
3.4.Collection And Treatment Of Fuel Failure Data
3.5.Evaluation Of Pwr Fuel â#x80;#x98;Leakersâ#x80;#x99;
3.6.Evaluation Of Bwr Fuel â#x80;#x98;Leakersâ#x80;#x99;
3.7.Evaluation Of Wwer Fuel â#x80;#x98;Leakersâ#x80;#x99;
3.8.Evaluation Of Fuel â#x80;#x98;Leakersâ#x80;#x99; In Candus/Phwrs
3.9.Multiple Failure Incidents/Defect Excursions
3.10.Fuel Rod Failure Rates And Fuel Failure Causes Between 1987â#x80;#x93;2006
3.11.Concluding Remarks
References To Section 3
4. Detection, Examination And Analysis Of Fuel Failures
4.1.Introduction
4.2.Evaluation Of Coolant Activity
4.3.Localization Of Fuel Failures
4.4.Fuel Examination
4.5.Fuel Failure Analysis
References To Section 4
5. Mechanisms And Root Causes Of Fuel Failure
5.1.Introduction
5.2.Grid To Rod Fretting
5.3.Fretting Due To Debris
5.4.Corrosion
5.5.Pelletâ#x80;#x93;Cladding Interaction
5.6.Manufacturing Defects
5.7.Cross-Flow/Baffle Jetting
5.8.Primary Hydriding
5.9.Delayed Hydride Cracking (Dhc)
References To Section 5
6. Fuel Structural Damage And Other Fuel Assembly Issues
6.1.Introduction
6.2.Assembly Bow
6.3.Mechanical Damage During Handling
6.4.Crud And Axial Offset Anomalies (Aoa)
6.5.Other Miscellaneous Damage
References To Section 6
7. Secondary Fuel Failures
7.1.Background
7.2.Observations From Experience
7.3.Degradation Characteristics.
7.4.Mechanisms
7.5.Circumferential Fractures
References To Section 7
8. Fuel Failure Prevention And Management In Plant Operation
8.1.Existing Operating Limits And Recommended Practices
8.2.Improvement Of Quality During Manufacturing
References To Section 8
9. Conclusions
Abbreviations
Contributors To Drafting And Review.