must be vertical and away from the ship. Spaces between the tank barriers or between the barrier and the ships side must e fitte nd rs vel,pressure and ten ature e must EE D and gas monitoring points for detection equipment mustalso be provided in inter parrie spaces.Detection equipment is also required in void spaces,cargo pump rooms and control rooms.Measurements must be taken of flammable vapours,toxic vapours and oxygen porna content. ove cargo tar system Automatic tank piecing(Ing) MEMBRANE HOLED CARGO DISCHARGED ature voyage that fall more rapidly than the liquid can drain from the inter barrier.The primary barrier,which has little mechanical strength will thus collapse. tank,betoT88sregttssgee36m,2Oaebpe2ma时t6aitoperamsgtot他emust be vertical and away from the ship. Spaces between the tank barriers or between the barrier and the ships side must be constantly inerted or there must be sufficient inert gas available to fill spaces. Tanks must be fitted with indicators for level, pressure and temperature. There must also be a high level alarm with visual and audible warning together with automatic flow cut off. Pressure alarms and gas monitoring points for detection equipment must also be provided in inter barrier spaces. Detection equipment is also required in void spaces, cargo pump rooms and control rooms. Measurements must be taken of flammable vapours, toxic vapours and oxygen content. For fire protection, the fire pump must be capable of supplying at least two jets or sprays which can reach all parts of the deck over the cargo tanks fixed dry chemical systems may also be required. Automatic tank piecing (lng) Should a leak be detected from the tank into the interbarrier space by either temperature probes or gas detectors during the loaded voyage the inter barrier space will fill to the level of the liquid in the tank. On discharge it is possible that the level in the tank will fall more rapidly than the liquid can drain from the inter barrier. The primary barrier, which has little mechanical strength will thus collapse. To prevent this a nitrogen powered punch assembly is fitted to a low point in the tank, before start of discharge this punch may be operated to allow proper drainage. Once 6