This standard specifies the inspection and quarantine supervision requirements for foreign debris in imported and exported coal and the control requirements for foreign debris such as detonators in exported coal. This standard applies to the inspection and supervision of foreign matter in imported and exported coal.
SN/T 1549-2005 history
2011SN 1549-2011 Technical code for control and supervision on extraneous impurity in coal for import and export
2005SN/T 1549-2005 Technical code for control and supervision on extraneous impurity in coal for import and export
SN/T 1549-2005 Technical code for control and supervision on extraneous impurity in coal for import and export was changed to SN 1549-2011 Technical code for control and supervision on extraneous impurity in coal for import and export .