Segregation of Dangerous Goods

Rules pertaining to segregation of dangerous goods is explained in chapter 7.2 of IMDG Code.

Chapter 7.2 is divided as below

  • 7.2.1 General
  • 7.2.2 Segregation of packages
  • 7.2.3 Segregation of cargo transport units on board container ships
  • 7.2.4 Segregation of cargo transport units on board roll-on/roll-off ships
  • 7.2.5 Segregation in shipborne barges and on board barge-carrying ships
  • 7.2.6 Segregation between bulk materials possessing chemical hazards and dangerous goods in packaged form
  • 7.2.7 Segregation of goods of class 1
  • 7.2.8 (Reserved)
  • 7.2.9 Segregation for goods of class 7

Chapter 7.2.2 Rules for Segregation of packages one must follow when consolidating various dangerous goods into a shipping container. There are various rules including General. Segregation Groups, Special Provisions for segregation and Segregation within containers.

Below are the Ideal steps to be taken while checking segregation between two dangerous goods packages.

1. Check the general rules

2. Determine the class and subsidiary risk(s) of each substance, if any

3. Determine if the dangerous goods are according to Limited Quantities, Excepted Quantities or special provisions of segregation if so follow same

4.Determine for each substance if there is any specific segregation
requirement in column (16) of Dangerous Goods List in Volume 2 or transport document

4.a.1 If there are no segregation requirements in column (16) of Dangerous Goods List and in the transport document then use segregation table in accordance with the general rules to reach the conclusion whether allowed to be stuffed in same container or not

4.b.1 If there are segregation requirements in column (16) of Dangerous Goods List and in the transport document use Segregation table taking into account any specific segregation provisions and the general rules and determine the specific segregation provisions (eg; segregation groups) then ensure the most stringent requirements are taken. you will get the answer whether allowed to be loaded in same container or not.

If any segregation rule is applicable between the packages then both cannot be loaded in same container except for segregation provision “away from” which may be loaded with the approval of competent authority.

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