WHAT IS CHEMICAL TANKER?
A chemical tanker is a type of tanker ship designed to transport chemicals in bulk. As defined in MARPOL Annex II, chemical tanker means a ship constructed or adapted for carrying in bulk any liquid product listed in chapter 17 of the International Bulk Chemical Code.
Oceangoing paracel chemical tankers range from 5,000 tonnes deadweight (DWT) to 40,000 DWT in size, which is smaller than the average size of other tanker types due to the specialized and vulnerable nature of their cargo and the size restrictions of the port terminals where they call to load and discharge.
IMO Type 1(ST1)
Type 1 ship is a chemical tanker intended to transport Chapter 17 of the IBC Code products with very severe environmental and safety hazards which require maximum preventive measures to preclude an escape of such cargo. The quantity of cargo required to be carried in a Type 1 ship should not exceed 1,250 m3 in any one tank.
IMO Type 2(ST2)
Type 2 ship is a chemical tanker intended to transport Chapter 17 of the IBC Code products with appreciably severe environmental and safety hazards which require significant preventive measures to preclude an escape of such cargo. The quantity of cargo required to be carried in a Type 2 ship should not exceed 3000 m3 in any one tank.
IMO Type 3(ST3)
Type 3 ship is a chemical tanker intended to transport Chapter 17 of the IBC Code products with sufficiently severe environmental and safety hazards which require a moderate degree of containment to increase survival capability in a damaged condition. There is no filling restriction for chemicals assigned to Ship Type 3.
Most chemical tankers are IMO 2 and 3 rated, since the volume of IMO 1 cargoes is very limited.
MARPOL ANNEX II (NOXIOUS LIQUID SUBSTANCES CARRIAGE IN BULK)
•Category X : If discharge into the sea from tank cleaning or deballasting , are deemed to present major hazard to marine resources, prohibition of discharge to marine environment.
•Category Y: If discharge into the sea from tank cleaning or deballasting , are deemed to present hazard to marine resources, limitation on the quality and quantity of discharge .
•Category Z: : If discharge into the sea from tank cleaning or deballasting , are deemed to presentminor hazard to marine resources, less stringent restrictions on quantity and quality of discharge.
•OS Other substances: substances fall outside the category of X,Y or Z because they consider no harm to marine environment.
MARPOL 73/78 MINIMUM REQUIREMENTS
•P & A (Procedure & Arrangement) MANUAL
•SMPEP (Shipboard Marine Pollution Emergency Plan)
•CARGO RECORD BOOK
•CERTIFICATE OF FITENESS
•DAMAGE STABILITY BOOKLET
•NLS CERTIFICATE
•MSDS (Material Safety Data Sheet) provide by shipper
REFRENCES & ACKNOWLEDGEMENTS
* International Safety Guide for Oil Tankers and Terminal (ISGOTT)
*International Chamber of Shipping Tanker Safety Guide (Chemical)
*International Code for the Construction and Equipment carrying Dangerous Chemicals in Bulk (IBC Code)
*MARPOL 73/78 ANNEX II REGULATIONS FOR PREVETION OF POLLUTION BYNOXIOUS LIQUID SUBSTANCES IN BULK
*CHEMICAL DISTRBUTION INSTITUTE (CDI)
*USCG CARGO COMPATBILITY CHART
