Bunded tank system

Abstract

A bunded tank system suitable for both transport and storage of bulk dangerous industrial liquids is provided. Preferably the tank is containerised to provide efficient use of space and improved logistics for transport and storage. The containerised bunded tank system includes a plurality of bunded sub-tanks arranged in an interlocking manner within an ISO container. In addition the container is fitted with an improved container lock.

1 .- 52 . (canceled) 
     
     
         53 . A tank system comprising:
 a first substantially rectangular outer tank having a bottom wall, end walls, enclosing side walls, and an open top, wherein at least the enclosing side walls or the end walls of said first outer tank are corrugated, and said corrugated walls of said first outer tank define inner wall portions and outer wall portions,   a second substantially rectangular inner tank having a bottom wall, end walls, enclosing side walls and a closed top, and including an aperture for filling and/or emptying said inner tank,   said second inner tank being arranged within said first outer tank, and wherein neighboring walls of said second inner tank are adjacent and abut said inner wall portions of said first outer tank,   said first outer tank has a volume of at least 110% the volume of said second inner tank, and   said first outer tank being sized to fit inside the confines of an ISO standard container.   
     
     
         54 . A tank system as claimed in  claim 53 , wherein the ISO standard container is a 20 foot half height container. 
     
     
         55 . A tank system as claimed in  claim 53 , wherein the corrugations of said corrugated walls are parallel to the vertical axis of the tank in use. 
     
     
         56 . A tank system as claimed in  claim 53 , wherein said bottom wall of said first outer tank is ribbed. 
     
     
         57 . A tank system as claimed in  claim 56 , wherein said bottom wall of said second inner tank is ribbed, and
 said ribs of said bottom wall of said second inner tank interlock with said ribs of said bottom wall of said first outer tank.   
     
     
         58 . A tank system as claimed in  claim 53 , wherein the corrugated spaces between the first outer tank and the second inner tank, together comprise at least approximately 10% of the volume of said second inner tank. 
     
     
         59 . A tank system as claimed in  claim 53 , wherein said end walls of said second inner tank are substantially planar. 
     
     
         60 . A tank system as claimed in  claim 53 , wherein said side walls of said second inner tank are substantially planar. 
     
     
         61 . A tank system as claimed in  claim 53 , wherein said tank is surrounded on at least 5 sides by an open wire mesh cage. 
     
     
         62 . A tank assembly comprising a plurality of tanks as claimed in  claim 53 , wherein said tanks are positioned adjacent and aligned with each other such that correspondingly adjacent corrugated walls of at least two said first outer tanks contact and interlock with each other. 
     
     
         63 . A tank assembly as claimed in  claim 62 , comprising a plurality of said tanks positioned adjacent and aligned with each other and fitted inside the confines of an ISO standard 20 foot half height container and wherein said plurality is:
 a) two tanks, or   b) three tanks, or   c) four tanks, or   d) five tanks, or   e) six tanks, or   f) seven tanks, or   g) eight tanks.   
     
     
         64 . A tank assembly as claimed in  claim 63 , wherein said container is a half height high cube container. 
     
     
         65 . A tank assembly as claimed in  claim 63 , wherein the total volume of said second inner tanks combined does not exceed approximately 10,000 L. 
     
     
         66 . A tank assembly as claimed in  claim 53 , wherein the volume of each inner tank does not exceed 3,000 L. 
     
     
         67 . A tank assembly as claimed in  claim 53 , wherein the volume of each inner tank is approximately 2,500 L. 
     
     
         68 . A tank assembly as claimed in  claim 63  wherein said tanks are surrounded on at least 3 sides by an open wire mesh cage. 
     
     
         69 . A containerized tank system comprising:
 a first outer tank having a bottom wall, end walls, enclosing side walls, and an open top,   a second inner tank having a bottom wall, end walls, enclosing side walls and a closed top, and including an aperture for filling and/or emptying said inner tank, and   an ISO standard container,   said first outer tank having a volume of at least 110% the volume of said second inner tank,   at least the side walls and/or end walls of the first outer tank being substantially as wide as the internal width of the ISO standard container,   said second inner tank being arranged within said first outer tank to form a tank assembly, and   said tank assembly being arranged within the ISO standard container.   
     
     
         70 . A containerized tank system as claimed in  claim 69 , comprising a plurality of tank assemblies, wherein the plurality is:
 a) two tank assemblies, or   b) three tank assemblies, or   c) four tank assemblies, or   d) five tank assemblies, or   e) six tank assemblies, or   f) seven tank assemblies, or   g) eight tank assemblies.   
     
     
         71 . A containerized tank system as claimed in  claim 69 , wherein the ISO standard container is a 20 foot half height container. 
     
     
         72 . A containerized tank system as claimed in  claim 70 , wherein the ISO standard container is a 20 foot half height container.