2.9.1 Tanker transfer procedures should contain
                           information on the tanker's vapour collection system including:
                        
                        
                        
                        
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                                 .1 a line diagram of the tanker's vapour collection
                                 piping indicating the locations and purpose of all control and safety
                                 devices;
                              
                              
                              
                            
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                                 .2 the maximum allowable transfer rate as limited
                                 by the venting capacity of the pressure or vacuum relief valves, or
                                 any other factor which would limit the transfer rate;
                              
                              
                              
                            
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                                 .3 the maximum pressure drop in the vessel's vapour
                                 collection system for various transfer rates;
                              
                              
                              
                            
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                                 .4 the relief settings of each pressure and vacuum
                                 relief valve;
                              
                              
                              
                            
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                                 .5 pre-transfer procedures; and
                              
                              
                              
                            
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                                 .6 procedures to be followed in the event of a
                                 fault during vapour collection operations.