Tag: ON DECK

Stowage categories for Explosives (Class 1) – IMDG 36-12

One of the major changes came in IMDG Code 36-12 is revision of stowage categories of class 1, explosives. Up to 35th amendment of IMDG Code explosives were assigned with one of the stowage categories 01 to 15.

In 36th amendment of IMDG Code, which can be used voluntarily from 1st January 2013 and will become mandatory from 1st Jan 2014, explosives are assigned with one of the stowage categories 01 to 05.

Below is the tabular format of stowage categories in IMDG 36-12, for operational reasons refer to individual entries in IMDG Code and other relevant provisions as applicable.

Stowage categories for Explosives (Class 1) – IMDG 36-12Stowage categories for Explosives (Class 1) – IMDG 36-12
Stowage categories for Explosives (Class 1) – IMDG 36-12

Stowage on passenger ships

  • Division 1.4s compatibility group S may be transported without restriction on quantity.
  • No other goods of class 1 may be transported on passenger ships except:

Compatibility groups C, D and E and articles in group G if the total net explosive mass is not greater than 10 KG per ship and in closed transport unit on or under deck.

Articles in compatibility group B if the total net explosive mass is not greater than 10 kg per ship and in closed transport unit – on deck only.

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STOWAGE OF GOODS OF CLASS 2

General Stowage Precautions
General stowage precautions for goods of class 2 is addressed in chapter 7 section 7.1.8.1 of IMDG Code. Requirement also addresses  section 7.4.2.5.2. for gases loaded in containers which may cause oxygen depleted or enriched atmosphere inside containers.

Loading a container into a Container ship hold.
Loading a container into a Container ship hold. (Photo credit: Wikipedia)

Specific Stowage Requirements

Specific stowage requirement of each dangerous goods is listed in Column 16 of Dangerous Goods List in Chapter 3.2 of IMDG CodE.
Class 2.2 may be allowed on deck or under deck or may only be allowed on deck in specific cases

Example 1 : 1002 AIR, COMPRESSED  Class 2.2 – Stowage Category A. ( ON DECK OR UNDER DECK )

Example 2 : 1963 HELIUM, REFRIGERATED LIQUID  Class 2.2   – Stowage Category D. ( ON DECK ONLY )

View in the hold of a container ship. Français...
View in the hold of a container ship. (Photo credit: Wikipedia)

From above examples we understand that certain class 2.2 is allowed on or under deck but certain class 2.2  is allowed only on deck.

Hence it is imperative that we must look at stowage category for each dangerous goods to ascertain the particular stowage requirement.

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