Composite Tanks for storing and/or transporting liquid organic and inorganic chemicals and the like

• US 6,267,069 B1
• Filed: 10/27/2000
• Issued: 07/31/2001
• Est. Priority Date: 05/26/1999
• Status: Expired due to Term

• Current Assignee: Ascus Technologies, Ltd.
• Original Assignee: Guaranteed Advanced Tank Technologies International Ltd.
• Inventors: Keehan, Donald J.
• Primary Examiner(s): Sotelo, Jesus D.
• Application Number:
  US09/697,888
• Time in Patent Office: 277 Days
• Field of Search: 114/74.A, 114/74.R, 114/256, 220/901
• US Class Current: 114/74.00A
• CPC Class Codes: B63B 11/04 Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls tanks for fuel or the like not forming subdivisions of the hull B63B17/0027; cleaning of tanks B63B57/00
• CPC Class Codes: B63B 25/08 fluid constructional features of bunkers B63B11/04; tanks for fuel or the like not forming bunkers B63B17/0027
• CPC Class Codes: B63B 25/082 Arrangements for minimizing pollution by accidents associated with tanks for fuel or the like not forming bunkers B63B17/0036
• CPC Class Codes: B63B 43/00 Improving safety of vessels, e.g. damage control, not otherwise provided for fire-fighting in ships A62C3/10
• CPC Class Codes: Y10S 220/901 Liquified gas content, cryogenic

Abstract

A maritime vessel is disclosed. The maritime vessel includes a hull and at least one cargo tank associated with the hull and having a multi-layered side wall construction. The side wall construction includes a first layer providing a corrosion barrier for the cargo tank, a second layer providing structural integrity for the cargo tank, a third layer providing impact energy absorption and buoyancy properties for the cargo tank, and a fourth layer providing fire-resistant properties for the cargo tank.

Claims

1. A cargo tank comprising:

a first side wall layer that defines an inner surface of the tank, the first side wall layer formed from a material having at least a chemical-resistance property;

a second side wall layer formed from a material having at least a load-carrying property;

a third side wall layer formed from a material having at least an energy-absorption property; and

a fourth side wall layer that defines an outer surface of the tank, the fourth side wall layer formed from a material having at least a flame-resistance property.

2. The tank of claim 1, further including:

a fifth side wall layer also formed from a material having at least a load-carrying property, the fifth side wall layer being spaced apart from the second side wall layer.

3. The tank of claim 2, further including:

a sixth side wall layer also formed from a material having at least an energy-absorption property, the fifth side wall layer being spaced apart from the third side wall layer.

4. The tank of claim 1, wherein the material forming the first side wall layer has primarily a chemical-resistance property, the material forming the second side wall layer has primarily a load-carrying property, the material forming the third side wall layer has primarily an energy-absorption property, and the material forming the fourth side wall layer has primarily a fire-resistance property.

5. The tank of claim 4, further including:

a fifth side wall layer also formed from a material having primarily a load-carrying property, the fifth side wall layer being spaced apart from the second side wall layer.

6. The tank of claim 5, further including:

a sixth side wall layer also formed from a material having primarily an energy-absorption property, the sixth side wall layer being spaced apart from the third side wall layer.

7. The tank of claim 6, wherein the second side wall layer encompasses the first side wall layer, the third side wall layer encompasses the second layer, and the fifth side wall layer encompasses the third side wall layer and the sixth side wall layer encompasses the fifth side wall layer.

8. The tank of claim 4, further including:

a fifth side wall layer also formed from a material having primarily an energy-absorption property, the fifth side wall layer being spaced apart from the third side wall layer.

9. The tank of claim 4, wherein the second side wall layer encompasses the first side wall layer.

10. The tank of claim 4, wherein the first side wall layer includes a resin material and a reinforcement material.

11. The tank of claim 4, wherein the first side wall layer includes a siloxirane resin material and a carbon fibers reinforcement material.

12. The tank of claim 4, wherein the first side wall layer includes a fluorinated thermoplastic material.

13. The tank of claim 4, wherein the first side wall layer includes a polyvinylidene fluoride (PVDF) film material.

14. The tank of claim 4, wherein the second side wall layer includes a resin material and a reinforcement material.

15. The tank of claim 4, wherein the second side wall layer includes a siloxirane resin material and a reinforcement material from the group consisting of fiberglass, aramid carbon fibers, graphite fibers, and organic fibers.

16. The tank of claim 4, wherein the third side wall layer includes at least one of a honeycomb-shaped material and a high-density foam material.

17. The tank of claim 4, wherein the third side wall layer includes a rigid phenolic foam material having a density of about 6.0 to about 9.0 pounds per square foot.

18. The tank of claim 4, wherein the fourth side wall layer includes a resin material and a reinforcement material.

19. The tank of claim 4, wherein the fourth side wall layer includes a phenolic resin material and a reinforcement material from the group consisting of fiberglass, aramid carbon fibers, graphite fibers, and organic fibers.

20. The tank of claim 4, further including a superstructure surrounding the tank to facilitate transporting the tank.

21. The tank of claim 4, further including at least one parameter sensing device embedded within a side wall of the tank, the side wall being formed from the first side wall layer, the second side wall layer, the third side wall layer and the fourth side wall layer.

22. The tank of claim 4, wherein:

the first side wall layer includes a siloxirane resin material and a carbon fibers reinforcement material;

the second side wall layer includes a siloxirane resin material and a reinforcement material from the group consisting of fiberglass, aramid carbon fibers, graphite fibers, and organic fibers;

the third side wall layer includes at least one of a honeycomb-shaped material and a high-density foam material; and

the fourth layer includes a phenolic resin material and a reinforcement material from the group consisting of fiberglass, aramid carbon fibers, graphite fibers, and organic fibers.