Tank Cleaning Practice: 2026 [paper]

Content Listing

1 – Physical Properties
1.1 Water Solubility
1.2 Melting Point
1.3 Viscosity
1.4 Boiling Point
1.5 Vapour Pressure
1.6 Flash Point
1.7 Density
1.8 Colour
1.9 Smell
2 – Chemical Properties
2.1 Polymerisation
2.2 Reaction with Water
2.3 Reaction with Water Hardness Compounds
2.4 Reaction with Oxygen
2.5 Putrefaction
2.6 Evaporation of Volatile Substances
2.7 Saponification
3 – Understanding Tank Cleaning Requirements of Differing Tanker Types and Trades
3.1 Tanker Types
3.2 Tank Coatings
4 – Cleanliness Requirement of the Next Cargo
4.1 Factors Affecting the Cleanliness Requirement of a Cargo
4.2 Visually Clean Standard
4.3 Water White Standard
4.4 High Purity Standard
4.5 Ultra High Purity Standard
5 – Environmental Factors when Tank Cleaning
5.1 Adjacent Tanks
5.2 Temperature
6 – Tank Equipment
6.1 Cleaning Machines
6.2 Deepwell Pumps
6.3 Heating Systems
6.4 Monitoring Systems
7 – Cargo Lines, Valves and Related Equipment
7.1 The Tank System
7.2 Example of a Cleaning Checklist
8 – Tank Cleaning Plan
8.1 Tank Cleaning Plan Overview
8.2 Tank Cleaning Atmospheres
9 – Tank Cleaning Recipe
9.1 Recipe Components
9.2 Recipe Structure
9.3 Cleaning Agents
10 de Safety
10.1 Risk Management
10.2 Flammability
10.3 Electrostatic Electricity
10.4 Toxicity
10.5 Corrosiveness
10.6 Personal Protective Equipment (PPE)
10.7 Asphyxiation
11 – Precleaning Meeting
11.1 Prerequisites: creating the tank cleaning plan
11.2 Conducting the Precleaning Meeting
12 – Cleaning Methods
12.1 Direct Cleaning
12.2 Injection Cleaning
12.3 Recirculation Cleaning
12.4 Recirculation via a Service Tank
12.5 Recirculation with Decanting
12.6 Steaming
12.7 Rinsing
12.8 Vent Mop Dry
13 – Checking of Results and Wall Wash Test Methods
13.1 Tank Inspection
13.2 Wall Wash Test Overview
13.3 Appearance
13.4 Colour
13.5 PTT Test
13.6 Water Miscibility Test
13.7 Chloride Test
13.8 Acid Wash Test
13.9 Non-volatile Matter (NVM) Test
13.10 Gas Chromatography
14 – Washing Water Analysis
14.1 Methodology
14.2 UV Spectrophotometer
14.3 Suitability
14.4 Advantages and Disadvantages
15 – International Maritime Regulations and Standards
15.1 IMO
15.2 MARPOL
15.3 SOLAS
16 – MARPOL Annex I
16.1 Key Elements of MARPOL Annex I
16.2 Oil Discharge Criteria
16.3 List of Oils
16.4 ODME
16.5 Special Areas
17 – MARPOL Annex II
17.1 Preparation
17.2 Pollution Category X
17.3 Pollution Category Y
17.4 Prewash Procedures with Recycling of Washing Medium
17.5 Pollution Category Z
17.6 Pollution Category OS
17.7 Persistent Floaters
17.8 Minimum Prewash Quantity
18 – IBC Code
18.1 Definitions
18.2 Application of the Code
18.3 Chapter 17 Cargoes (IBC Code)
18.4 MEPC.2