15.6.1 Tanks used for these
cargoes shall not be used for the transportation of any other cargo
except those commodities to be used in the manufacture of motor fuel
anti-knock compounds containing lead alkyls.
15.6.2 If a cargo pump-room
is located on deck level according to 15.18,
the ventilation arrangements shall be in compliance with 15.17.
15.6.3 Entry into cargo tanks
used for the transportation of these cargoes is not permitted unless
approved by the Administration.
15.6.4 Air analysis shall
be made for lead content to determine if the atmosphere is satisfactory
prior to allowing personnel to enter the cargo pump-room or void spaces
surrounding the cargo tank.