Condition Evaluation and Maintenance of Tanker Structures

Condition Evaluation and Maintenance of Tanker Structures, 1992

Information to assist when undertaking a technical assessment of the structu ral performance of a particular tanker.

This book highlights a number of areas and items to focus on to assist those undertaking a technical assessment of the structural performance of a particular tanker.

1. Introduction

2. Corrosion Trends
2.1 General
2.2 In Service Corrosion Studies
2.3 Principle Features of Corrosion
2.3.1 Segregated (water) Ballast Tank Spaces
2.3.2 Cargo/Clean Ballast Tank Spaces
2.3.3 Cargo/Dirty Ballast Tank Spaces
2.3.4 Cargo Only Tank Spaces
2.4 In-Service Corrosion Rates
2.5 Corrosion and Steel Renewal Trends

3. Assessment of Structural Integrity
3.1 General
3.1.1 Introduction
3.1.2 Tank Bottom Structures
3.1.3 Side Shell, Longitudinal and Transverse Bulkheads
3.1.4 Deckhead Structures
3.2 Risk Categories
3.2.1 Corrosion
3.2.2 Structural Elements
3.3 Planning and Preparation for Inspection
3.3.1 General Data Evaluation
3.3.2 Evaluation of Potential Corrosion
3.3.3 Structural Design Evaluation
3.3.4 Preparation for Inspection
3.4 Structural Inspection
3.4.1 Scope of Inspection
3.4.2 Execution
3.4.3 Reporting
3.5 Analysis
3.5.1 General
3.5.2 Methods of Assessment
3.53 Degree of Effectiveness

4. Maintenance and Repair Guidelines
4.1 General
4.2 Steel Renewal/Reinforcement
4.2.1 Steel Wastage
4.2.2 Pitting Corrosion
4.2.3 Reinforcement of Structure
4.3 Maintenance of Corrosion Protection System
4.3.1 General
4.3.2 Hard Coatings
4.3.3 Soft Coatings
4.3.4 Sacrificial Anodes

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