The current position:

Requirements for the Design, Testing and Location of Devices to Prevent the Passage of Flame into Cargo Tanks in Chemical Tankers

release time:2013-03-08 00:03
Download link:
CCS Circ.309(ENG)_Requirements for the Design, Testing and Location of Devices to Prevent the Passage of Flame into Cargo Tanks in Chemical Tankers.pdf
Note: If you need to reprint, please indicate the source of the information.