Section 5 Flashcards
IMDG code contents and supplement contents.
International Maritime Dangerous Goods Code (IMDG)
A guidance for the maritime transport of DG in packaged form.
the code set out to enhance and harmonize the safe carriage of DG to prevent pollution to the environment.
Volume 1 - Detailed instructions for safely preparing and transporting DG by sea. (7 parts)
Volume 2 - Part 3 (DG List, Limited and Excepted Quantities) and Appendixes. (A&B)
Supplement:
- EMS
- MFAG
- Reporting procedures
- ‘Safe use of pesticides’
- International Code for the Carraige of PAckaged Irradicated Nuclear Fuel, Plutonium and High-level Radioactive Wastes on board ships (INF Code)
9 Classes of IMDG
Class 1 - Explosives
Class 2 - Flammable Gases
Class 3 - Flammable Liquids
Class 4 - Flammable Solids
Class 5 - Oxiding substances and Organic peroxides
Class 6 - Toxic and Infectious substances
Class 7 - Radioactive material
Class 8 - Corrosive substances
Class 9 - Miscellaneous substances and environmentally hazardous substances
4 basic principles for the carriage of DG.
- Accurate documentation
- Approved packaging
- Correct placarding and labelling
- Adequate segregation
What document is required under M.O. 41?
As per Division 2 Part 9, Document of compliance.
AMSA Multimodal Dangerous Goods Form (MMDF)
How to ensure proper named PSN (Packing Group I, II and III)
By identifying the UN no.
Packing Group I - substances presenting high danger
Packing Group II - substances presenting medium danger
Packing Group III - substances presenting low danger
What is subsidiary risk? How to indicate?
It is when a DG cargo is identified with more than 1 hazard. It is indicated by having another class label of smaller size below its main hazard label.
How to know a particular substance is a marine pollutant? Index - P.
Substances from classes 1 to 9 which have been identified with the potential to cause pollution to the marine environment would have a symbol “P” in column 4 of DG List - IMDG Vol. 2.
Requirements for limited quantities.
Under the provisions of Limited Quantities, the column 7a, if a substance has ‘zero’ entered in the column, limited quantity is prohibited, other than that, substances are permitted to be carried in limited quantities, provided the DG are packed in combination packing, with inner packagings containing DG not more than the quantity mentioned therein.
What are the excepted quantities?
Small quantities allowed for transportation where inner and outer package is required but not labeling for class hazardous. Details for excepted quantities can be found in column 7b of DGL.
Issuing document of compliance.
Ships authorized to carry DG are issued a DOC by the admin under SOLAS Chap. 2-2 Reg 19.
A DOC indicates which all classes of DG are permitted in the underdeck spaces, on-deck space and whether the authorization is only for packaged DG, or for packages and bulk goods, and whether not allowed.
‘P’ - Only packaged goods are permitted.
‘A’ - Packaged as well as bulk goods are allowed.
‘X’ - Not allowed.
Stowage requirements
It is the proper placement of DG onboard a ship to ensure safety and environmental protection during voyage. Stowage requirements are assigned through different stowage categories, which can be found in the IMDG code Chap. 3.2.
Class 1, stowage categories 01 to 05.
DG other than explosives, stowage categories A to E.
Packaging requirements
The instructions consist of:
I) General instructions
II) Specific instructions for particular hazards
III) Specific instructions and for specialized DG
X - High Strength, can be used for cargoes of all groups (1, 2 and 3).
Y - Medium Strength, suitable for cargoes of groups (2 and 3).
Z - Lower Strength, suitable for gorup 3 cargoes only.
IMDG segregation table
Away from - DG may be in the same compartment or on deck, provided a min. Horizontal separation of 3m, projected vertically, is obtained.
Separated from - different compartment or holds when stowed under deck, provided an intervening deck is fire and liquid resistant. On deck, a separation by a dist. Of at least 6m horizontally, is obtained.
Separated by a complete compartment or hold from, either a vertical or horizontal separation, if the intervening decks are not fire and liquid resistant, then a longitudinal separation is to be obtained. On deck, a distance of at least 12m horizontally, is to be obtained. The same dist applied if one package is stowed on deck, and the other one in an upper compartment.
Separated longitudinally by an intervening complete compartment or hold from, between a package under deck and on deck, a min dis of 24m, including a complete compartment, must be maintained longitudinally. On deck, a dist of at least 24m longitudinally should be observed.
What is EMS and MFAG numbers
EmS, Emergency Procedures, codes are assigned to each UN no. in column 15 of the DGL in IMDG supplement. EmS has 2 parts, the first part is code for fire starting with ‘F’ and the second part for spillage, ‘S’, the fire schedule codes are from F-A to F-J and spillage codes are from S-A and S-Z.
MFAG contains:
A diagnostic chart
20 tables
15 appendices
Step 1: Emergency action and diagnosis directs to table
Step 2: Follow brief instructions from table
Step 3: More comprehensive information
How to segregate IMDG container?
