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Средняя скорость 4466 Kb/s
Simplifying IMDG Code
The International Maritime Organization‘s convention of Safety of Life at Sea (SOLAS) 1974, as amended, deals with various safety aspects for sea going vessels including carriage of cargo.
SOLAS chapter VI part A & B pertains to mandatory provisions governing the carriage of solid bulk cargoes and Chapter VII part B the mandatory provisions of carriage of dangerous goods in solid form in bulk. The provisions of these chapters are amplified in Maritime Solid Bulk Cargoes Code (IMSBC Code). SOLAS Part A of chapter VII deals with packaged dangerous cargo which is amplified in International Maritime Dangerous Goods Code (IMDG Code).
IMSBC Code became mandatory from 1 st January 2011.
Table of Contents in IMSBC Code
- Section 1 General provisions and definitions
- Section 2 General loading, carriage and unloading precautions
- Section 3 Safety of personnel and ship
- Section 4 Assessment of acceptability of consignments for safe shipment
- Section 5 Trimming procedures
- Section 6 Methods of determining angle of repose
- Section 7 Cargoes that may liquefy
- Section 8 Test procedures for cargoes that may liquefy
- Section 9 Materials possessing chemical hazards
- Section 10 Carriage of solid bulk wastes
- Section 11 Security provisions
- Section 12 Stowage factor conversion tables
- Section 13 References
- Appendix 1 Individual schedules of solid bulk cargoes
- Appendix 2 Laboratory test procedures, associated apparatus and standards
- Appendix 3 Properties of solid bulk cargoes
- Appendix 4 Index of solid bulk cargoes
Considering safety solid bulk cargoes are divided into Group A, B & C
consists of cargoes which may liquefy if shipped at moisture content in excess of their transportable moisture limit.
consists of cargoes which possess a chemical hazard which could give rise to a dangerous situation on a ship.
consists of cargoes which are neither liable to liquefy (Group A) nor to possess chemical hazards (Group B).
Dangerous goods are classified in accordance with chapter 2 of the IMDG Code.
Class 4.1: Flammable solids: The materials in this class are readily combustible solids and solids which may cause fire through friction.
Class 4.2: Substances liable to spontaneous combustion: The materials in this class are materials, other than pyrophoric materials, which, in contact with air without energy supply, are liable to self-heating.
Class 4.3: Substances which, in contact with water, emit flammable gases: The materials in this class are solids which, by interaction with water, are liable to become spontaneously flammable or to give off flammable gases in dangerous quantities.
Class 5.1: Oxidizing substances: The materials in this class are materials while in themselves not necessarily combustible, may, generally by yielding oxygen cause, or contribute to, the combustion of other material.
Class 6.1: Toxic substances: The materials in this class are materials liable either to cause death or serious injury or to harm human health if swallowed or inhaled, or by skin contact.
Class 7: Radioactive materials: The materials in this class are any materials containing radionuclides where both the activity concentration and the total activity in the consignment exceed the values specified in 126.96.36.199.1 to 188.8.131.52.6 of the IMDG Code.
Class 8: Corrosive substances: The materials in this class are materials which, by chemical action, will cause severe damage when in contact with living tissue or will materially damage, or even destroy, other goods or the means of transport.
Class 9: Miscellaneous dangerous substances and articles: The materials in this class are materials and articles which, during transport, present a danger not covered by other classes.
Solid bulk cargo
means any cargo, other than liquid or gas, consisting of a combination of particles, granules or any larger pieces of material generally uniform in composition, which is loaded directly into the cargo spaces of a ship without any intermediate form of containment.
Dangerous goods in solid form in bulk means any material, other than liquid or gas, consisting of a combination of particles, granules or any larger pieces of material, generally uniform in composition, which is covered by the IMDG Code and is loaded directly into the cargo spaces of a ship without any intermediate form of containment, and includes such materials loaded in a barge on a barge-carrying ship.
Transportable Moisture Limit (TML) of a cargo which may liquefy means the maximum moisture content of the cargo which is considered safe for carriage in ships other than specially constructed or fitted cargo ships (see 7.3.2 of IMBSC Code for full details).
Let’s have a look at the provisions of carriage of dangerous goods in solid form in bulk.
IMDG Code deals with dangerous goods in packaged form. Packaged form means dangerous goods packed in packages specified in IMDG Code, eg; UN 1942 AMMONIUM NITRATE packed in Woven plastics water-resistant bags. If we load UN 1942 AMMONIUM NITRATE directly in to the holds of a cargo ship without packing in bags then the provisions of IMBSC Code has to be applied.
Cargoes are identified and listed in IMSBC Code with Bulk Cargo Shipping Name (BCSN). All names are listed in appendix 4 of IMSBC Code in an alphabetical order together with their group name and references if any.
In order to understand the provisions of carriage of dangerous goods in bulk let us look at FERROSILICON. In appendix 4 (Index of solid bulk cargoes) Ferrosilicon is listed as below
In Appendix 1 (Individual schedules of solid bulk cargoes) Ferrosilicon is listed and twice first entry reads FERROSILICON UN 1408 which is same as above listed in the index.
The entry in appendix 1 gives full details of Ferrosilicon UN 1408 as below
FERROSILICON UN 1408 with 30% or more but less than 90% silicon (including briquettes)
Ferrosilicon is an extremely heavy cargo.