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InstituteTransportationHazmat SafetyHazmat: WaterHazmat: WaterFocus AreaHazmat EdgeEnglishAnalysisIn Depth Sub Topics (Level 4)USA

IMDG segregation

['Hazmat: Water']
IMDG segregation
  • Dangerous goods that may cause a hazard when interacting with another material must be segregated from those materials during shipping.

Dangerous goods, substances, or articles that are incompatible and may react violently with each other due to leakage, spillage, or any other accident must be segregated from one another for shipment by vessel. Segregation can be obtained by maintaining separation between incompatible dangerous goods or by requiring the presence of one or more steel bulkheads or decks between them, or a combination thereof.

Determining the segregation requirements between two or more substances requires referencing the Segregation Table in the International Maritime Dangerous Goods (IMDG) Code Chapter 7.2 and the segregation codes in Column 16b of the Dangerous Goods List. The segregation code description can be found in IMDG Code Chapter 7.2. If there are conflicting segregation requirements in the IMDG Code, the provisions of Column 16b of the Dangerous Goods List will always take precedence.

Segregation codes

A portion of the segregation codes given in Column 16b of the Dangerous Goods List are specified below:

Segregation Code Description
SG1For packages carrying a subsidiary hazard label of class 1, segregation as for class 1, division 1.3. However, in relation to goods of class 1, segregation as for the primary hazard.
SG2Segregation as for class 1.2G.
SG3Segregation as for class 1.3G.
SG4Segregation as for class 2.1.
SG5Segregation as for class 3.
SG6Segregation as for class 5.1.
SG7Stow “away from” class 3.
SG8Stow “away from” class 4.1.
SG9Stow “away from” class 4.3.
SG10Stow “away from” class 5.1.
SG11Stow “away from” class 6.2.
SG12Stow “away from” class 7.
SG13Stow “away from” class 8.
SG14Stow “separated from” class 1 except for division 1.4S.
SG15Stow “separated from” class 3.
SG16Stow “separated from” class 4.1.
SG17Stow “separated from” class 5.1.
SG18Stow “separated from” class 6.2.
SG19Stow “separated from” class 7.
SG20Stow “away from” SGG1 – acids.

IMDG Code Chapter 7 should always be referenced for complete segregation requirements, codes, and specifications.

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hazmat-water
hazmat-water
FOUNDATIONAL LEARNING

IMDG segregation

InstituteTransportationHazmat SafetyHazmat: WaterHazmat: WaterFocus AreaHazmat EdgeEnglishAnalysisIn Depth Sub Topics (Level 4)USA
['Hazmat: Water']
IMDG segregation
  • Dangerous goods that may cause a hazard when interacting with another material must be segregated from those materials during shipping.

Dangerous goods, substances, or articles that are incompatible and may react violently with each other due to leakage, spillage, or any other accident must be segregated from one another for shipment by vessel. Segregation can be obtained by maintaining separation between incompatible dangerous goods or by requiring the presence of one or more steel bulkheads or decks between them, or a combination thereof.

Determining the segregation requirements between two or more substances requires referencing the Segregation Table in the International Maritime Dangerous Goods (IMDG) Code Chapter 7.2 and the segregation codes in Column 16b of the Dangerous Goods List. The segregation code description can be found in IMDG Code Chapter 7.2. If there are conflicting segregation requirements in the IMDG Code, the provisions of Column 16b of the Dangerous Goods List will always take precedence.

Segregation codes

A portion of the segregation codes given in Column 16b of the Dangerous Goods List are specified below:

Segregation Code Description
SG1For packages carrying a subsidiary hazard label of class 1, segregation as for class 1, division 1.3. However, in relation to goods of class 1, segregation as for the primary hazard.
SG2Segregation as for class 1.2G.
SG3Segregation as for class 1.3G.
SG4Segregation as for class 2.1.
SG5Segregation as for class 3.
SG6Segregation as for class 5.1.
SG7Stow “away from” class 3.
SG8Stow “away from” class 4.1.
SG9Stow “away from” class 4.3.
SG10Stow “away from” class 5.1.
SG11Stow “away from” class 6.2.
SG12Stow “away from” class 7.
SG13Stow “away from” class 8.
SG14Stow “separated from” class 1 except for division 1.4S.
SG15Stow “separated from” class 3.
SG16Stow “separated from” class 4.1.
SG17Stow “separated from” class 5.1.
SG18Stow “separated from” class 6.2.
SG19Stow “separated from” class 7.
SG20Stow “away from” SGG1 – acids.

IMDG Code Chapter 7 should always be referenced for complete segregation requirements, codes, and specifications.

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