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Dangerous Goods-6 (Explosives)

Q. What are High consequence dangerous goods?
Ans. High consequence dangerous goods are those which have the potential for misuse in a terrorist event and which may, as a result, produce serious consequences such as mass casualties, mass destruction or, particularly for class 7, mass socio-economic disruption.

Q. What is mass explosion?
Ans. Mass explosion means one which affects almost the entire load virtually instantaneously.

Q. What are six hazard divisions?
Ans. The six hazard divisions of class 1 are:
Division 1.1 Substances and articles which have a mass explosion hazard

Q. What are Compatibility groups and classification codes of Class I?
Ans. Goods of class 1 are considered to be “compatible” if they can be safely stowed or transported together without significantly increasing either the probability of an accident or, for a given quantity, the magnitude of the effects of such an accident. By this criterion, goods listed in this class have been divided into a number of compatibility groups, each denoted by a letter from A to L (excluding I), N and S. An excerpt from the table is as follows:

Q. What additional information must be included for a consignment including explosives?
Ans. The following information shall be included for each consignment of class 1 goods, as applicable:

  1. Entries have been included for “SUBSTANCES, EXPLOSIVE, N.O.S.”, “ARTICLES, EXPLOSIVE, N.O.S.”, and “COMPONENTS, EXPLOSIVE TRAIN, N.O.S.”. When a specific entry does not exist, the competent authority of the country of origin shall use the entry appropriate to the hazard division and compatibility group. The transport document shall contain the statement: “Transport under this entry approved by the competent authority of …” followed by the State’s distinguishing sign for motor vehicles in international traffic of the country of the competent authority.
  2. The transport of explosive substances for which a minimum water or phlegmatizer content is specified in the individual entry is prohibited when containing less water or phlegmatizer than the specified minimum. Such substances shall only be transported with special authorization granted by the competent authority of the country of origin. The transport document shall contain the statement “Transport under this entry approved by the competent authority of …” followed by the State’s distinguishing sign for motor vehicles in international traffic of the country of the competent authority.
  3. When explosive substances or articles are packaged “as approved by the competent authority”, the transport document shall contain the statement “Packaging approved by the competent authority of …” followed by the State’s distinguishing sign for motor vehicles in international traffic of the country of the competent authority.
  4. There are some hazards which are not indicated by the hazard division and compatibility group of a substance. The shipper shall provide an indication of any such hazards on the dangerous goods documentation.

Q. What are special fire precautions for class 1?
Ans. The greatest risk in the handling and transport of goods of class 1 is that of fire from a source external to the goods, and it is vital that any fire should be detected and extinguished before it can reach such goods. A high standard and ready for immediate application of equipment is very important.

Compartments containing goods of class 1 and adjacent cargo spaces should be provided with a fire-detection system. If such spaces are not protected by a fixed fire-extinguishing system, they should be accessible for fire-fighting operations. No repair work should be carried out in a compartment containing goods of class 1. Special care should be exercised in carrying out repairs in any adjacent space. No welding, burning, cutting, or riveting operations involving the use of fire, flame, spark, or arc-producing equipment should be carried out in any space other than machinery spaces and workshops where fire-extinguishing arrangements are available, except in any emergency and, if in port, with prior authorization of the port authority.

Q. What are Special packing provisions for goods of class 1?
Ans.  

Q. What are the recommended guidelines in respect of explosive magazines?
Ans.

  1. The interior of magazine must be kept clean and tidy. Open or loose explosives or items must not be kept in the magazine. An accurate and up-to-date inventory of the contents of the magazine must be maintained.
  2. Compatibility of stowage is of paramount importance within a magazine.  Initiating systems must never be stored with other explosives. All cases (inner and outer) must be marked with your license number.
  3. Overstowing above stacking line should be avoided. A bullet-resistant buffer must be kept above stack line, if overstowing must be done.
  4. Only approved portable electrical devices must be used inside the magazine. Wireless communication devices must be prohibited inside the magazine. Adequate ventilation is maintained, entry of moisture must be prevented.
  5. The warning signs must be posted outside the magazine.
  6. Before leaving, the magazine must be securely locked. only authorized persons must have access to the keys.
  7. The relevant Regulations, in respect of Transportation of Dangerous Goods are complied with.

Q. What are the stowage catagories of class 1, explosives?
Ans.

Dangerous goods of class 1 other than division 1.4, compatibility group S, packed in limited quantities shall be stowed as indication in column 16a of the Dangerous Goods List in accordance with one of the categories specified below:

Stowage          Cargo ships                 On deck in closed cargo transport unit or under deck
Category 01    (up to 12 passengers)
                        Passengers ships        On deck in closed cargo transport unit or under deck

Stowage          Cargo ships                 On deck in closed cargo transport unit or under deck
Category 02    (up to 12 passengers)
                        Passengers ships        On deck in closed cargo transport unit or under deck
in closed cargo transport unit in accordance with
7.1.4.4.5

Stowage          Cargo ships                 On deck in closed cargo transport unit or under deck
Category 03    (up to 12 passengers)
                        Passengers ships        Prohibited except if in accordance with 7.1.4.4.5

Stowage          Cargo ships               On deck in closed cargo transport unit or under deck in
Category 04    (up to 12 passengers) closed cargo transport unit
                        Passengers ships        Prohibited except if in accordance with 7.1.4.4.5

Stowage          Cargo ships                 On deck only in closed cargo transport unit
Category 05    (up to 12 passengers)                        
Passengers ships        Prohibited except if in accordance with 7.1.4.4.5

Q. What are general provision regarding stowage of explosives on ships?
Ans. The general provisions in this respect as provided in part 7 are as follows:

Q. What are the provisions in respect of loading explosives on passenger ships?
Ans. Following provisions are provided in part 7 in this respect:

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