Composite thermal insulation and radioactive radiation shielding

Claim 2

A composite shielding for reducing thermal transfer and radioactive radiations emanating from a system, said shielding comprising: at least one first supporting layer and at least one second supporting layer; a shielding layer comprising a shield material that reduces said radioactive radiation, wherein said shielding layer is located between at least one first supporting layer and at least one second supporting layer; at least one inner layer and at least one outer layer such that said first and second supporting layers are located between said inner and outer layers; at least one first thermal insulation layer located between said inner layer and said shielding layer comprising a low thermal conductivity material a microporous mineral fiber-based material; a plurality of second thermal insulation layers located between said shielding layer and said outer layer comprising a metallic reflective material, and said shielding being adapted for installation next to said system.

Claim 3

The shielding of claim 1 further comprising: at least one first barrier layer between said first supporting layer and said shielding layer; and at least one second barrier layer between said second supporting layer and said shielding layer.

Claim 4

The shielding of claim 2 wherein said barrier layers form an enclosure that substantially encases said shielding layer.

Claim 5

The shielding of claim 2 wherein said first and second barrier layers comprise a high-temperature flexible material impervious to fine particles.

Claim 6

The shielding of claim 4 wherein said flexible material comprises components selected from the group consisting of chrysotile asbestos, glass wool, ceramic fibers, silica mineral fibers, silicate mineral fibers, aramids, metal fibers and combinations thereof.

Claim 7

The shielding of claim 2 wherein said barrier layers comprises silicon impregnated in a material selected from the groups consisting of silica mineral fibers, silicate mineral fibers, aramids, metal fibers and combinations thereof.

Claim 8

The shielding of claim 1 further compromising at least one first thermal insulation layer is located between said system and said shielding layer.

Claim 9

The shielding of claim 7 wherein said first thermal insulation layer and said shielding layer has a thickness ratio of about 2:1.

Claim 10

The shielding of claim 1 wherein the shielding layer comprises a shield material selected from the group consisting of high atomic weight materials, high hydrogen-containing materials, high boron-containing materials and combinations thereof.

Claim 11

The shielding of claim 1 wherein the shield material is selected from the group consisting of lead, uranium, depleted uranium, tungsten, alloys of lead, tungsten, uranium, depleted uranium and combinations thereof.

Claim 12

The shielding of claim 10 wherein said shield material is lead.

Claim 13

The shielding of claim 1 wherein the shield material is a selected from the group consisting of polymers, hydrated materials, concrete, borated materials and combinations thereof.

Claim 14

The shielding of claim 1 further comprising an in-plant insulation effectiveness of from about one up to about ten times the true half value for Cobalt 60 isotope.

Claim 15

The shielding of claim 1 wherein said shielding withstands seismic levels of at least up to about 7 G.

Claim 16

A composite shielding for permanently reducing thermal and radioactive radiation emanating from a system, said shielding including a plurality of component layers comprising: at least one inner layer comprising a metallic reflective material; at least one first thermal insulation layer adjacent to said inner layer, said first thermal insulation layer comprising an insulation material selected from the group consisting of low thermal conductivity materials, metallic reflective materials and combinations thereof; at least one first supporting layer adjacent to said first thermal insulation layer; at least one first barrier layer adjacent to said supporting layer; a shielding layer adjacent to said first barrier layer, said shielding layer comprising a shield material that reduces said radioactive radiation; at least one second barrier layer adjacent to said shielding layer; at least one second supporting layer adjacent to said second barrier layer; at least one outer layer adjacent to said second supporting layer, said outer layer comprising a metallic reflective material; said shielding layer having a plurality of shielding surfaces, said shielding surfaces being coated with an oxide layer; said first and second barrier layers forming an enclosure to substantially encase said shielding layer and prevent chemical and galvanic interaction between said shielding layer with said metallic reflective component layers and the system.

Claim 17

A composite shielding for permanently reducing thermal and radioactive radiation emanating from a system, said shielding including a plurality of component layers comprising: at least one inner layer comprising a metallic reflective material; at least one first thermal insulation layer adjacent to said inner layer, said first thermal insulation layer comprising an insulation material selected from the group consisting of low thermal conductivity materials, metallic reflective materials and combinations thereof; at least one first supporting layer adjacent to said first thermal insulation layer; at least one first barrier layer adjacent to said supporting layer; a shielding layer adjacent to said first barrier layer, said shielding layer comprising a shield material that reduces said radioactive radiation; at least one second barrier layer adjacent to said shielding layer; at least one second supporting layer adjacent to said second barrier layer; at least one outer layer adjacent to said second supporting layer, said outer layer comprising a metallic reflective material; said shielding layer having a plurality of shielding surfaces, said shielding surfaces being coated with an oxide layer; said first and second barrier layers forming an enclosure to substantially encase said shielding layer and prevent chemical and galvanic interaction between said shielding layer with said metallic reflective component layers and the system.

Claim 18

The shielding of claim 15 further comprising at one second thermal insulation layer between said second supporting layer and said outer layer, said second thermal insulation layer comprising an insulation material selected from the group consisting of low thermal conductivity materials, metallic reflective materials and combinations thereof.

Claim 19

The shielding of claim 15 wherein at least one of said first and second supporting layers comprise a metallic reflective material.

Claim 20

The shielding of claim 15 wherein said first thermal insulation layer comprises a microporous mineral fiber-based material.

Claim 21

The shielding of claim 15 wherein at least one of said first and second barrier layers comprise a flexible material selected from the group consisting of chrysotile asbestos, glass wool, ceramic fibers, silica mineral fibers, silicate mineral fibers, aramids, metal fibers and combinations thereof.

Claim 22

The shielding of claim 15 wherein at least one of said first and second barrier layers comprise silicon impregnated in a material selected from the groups consisting of silica mineral fibers, silicate mineral fibers, aramids, metal fibers and combinations thereof.

Claim 23

The shielding of claim 15 wherein said shield material is selected from the group consisting of high atomic weight materials, high hydrogen-containing materials, high boron-containing materials and combinations thereof.

Claim 24

The shielding of claim 21 wherein the shield material is selected from the group consisting of lead, uranium, depleted uranium, tungsten, alloys of lead, tungsten, uranium, depleted uranium and combinations thereof.

Claim 25

The shielding of claim 21 wherein said shield material is lead.

Claim 26

The shielding of claim 23 further comprising an in-plant insulation effectiveness of from about one up to about ten times the true half value for Cobalt 60 isotope.

Claim 27

The shielding of claim 24 wherein said first thermal insulation layer and said shielding layer has a thickness ratio of about 2:1.

Claim 28

The shielding of claim 21 wherein the shield material is selected from the group consisting of polymers, hydrated materials, concrete, borated materials and combinations thereof.

Claim 29

The shielding of claim 15 wherein said shielding layer and said first and second supporting layers are positioned adjacent to said first and second barrier layers such that the distance between said shielding layer and said supporting layers is between about 0.0625 to about 0.125 inches.

Claim 30

The shielding of claim 15 wherein said shielding withstands seismic levels of up to about 7 G.

Claim 33

The method of claim 29 wherein the composite shielding is provided on a permanent basis to the system.

Claim 34

The method of claim 29 further comprising the step of providing solid stainless steel end pieces at terminal ends of the composite shielding.

Claim 35

The method of claim 29 further comprising the step of providing fasteners for securing said segments together.

Claim 36

The method of claim 29 further comprising the step of providing a circumferential lap at one terminal end of each segment for mating said segments together.

Claim 37

The method of claim 29 further comprising the step of the distance between said shielding layer and said supporting layers between about 0.0625 and about 0.125 inches.

Claim 38

A composite shielding for reducing radioactive radiation emanating from a system comprising: a shielding layer having a surface coated with an oxide layer comprising a shield material that reduces said radioactive radiation between inner and outer layers; at least one first barrier layer adjacent to said shielding layer; at least one second barrier layer; said shielding layer disposed between said first and second barrier layers; said first and second barrier layers forming an enclosure that substantially encases said shielding layer; at least one supporting layer adjacent to at least one of said barrier layers.

Claim 39

A composite shielding for reducing radioactive radiation emanating from a system comprising: a shielding layer having a surface coated with an oxide layer comprising a shield material that reduces said radioactive radiation between inner and outer layers; at least one first barrier layer adjacent to said shielding layer; at least one second barrier layer; said shielding layer disposed between said first and second barrier layers; said first and second barrier layers forming an enclosure that substantially encases said shielding layer; at least one supporting layer adjacent to at least one of said barrier layers.

Claim 40

The shielding of claim 35 wherein said shielding layer is located between at least one first supporting layer and at least one second supporting layer.

Claim 41

The shielding of claim 35 wherein said barrier layers comprise a flexible material selected from the group consisting of chrysotile asbestos, glass wool, ceramic fibers, silica mineral fibers, silicate mineral fibers, aramids, metal fibers and combinations thereof.

Claim 42

The shielding of claim 35 wherein said barrier layers comprise silicon impregnated in a material selected from the groups consisting of silica mineral fibers, silicate mineral fibers, aramids, metal fibers and combinations thereof.

Claim 43

The shielding of claim 35 wherein the shielding layer comprises a shield material selected from the group consisting of high atomic weight materials, high hydrogen-containing materials, high boron-containing materials and combinations thereof.

Claim 44

The shielding of claim 35 wherein the shield material is selected from the group consisting of polymers, hydrated materials, concrete, borated materials and combinations thereof.

Claim 47

A composite shielding for reducing thermal transfer and radioactive radiations emanating from a system, said shielding comprising: a plurality of segments wherein each segment comprises a plurality of sections, each of said sections having longitudinal laps for mating sections together, each of said sections comprising: at least one thermal insulation layer; at least one supporting layer; a shielding layer comprising a shield material; and at least one barrier layer adjacent said shielding layer wherein spacing limitations arc provided between said shielding layer and the supporting layers adjacent to said barrier layers for preventing fretting and generation of shield material powder during steady state vibration; said shielding being adapted for installation next to said system.

Claim 48

A composite shielding for reducing thermal transfer and radioactive radiations emanating from a system, said shielding comprising: a plurality of segments wherein each segment comprises a plurality of sections, each of said sections having longitudinal laps for mating sections together, each of said sections comprising: at least one thermal insulation layer; at least one supporting layer; a shielding layer comprising a shield material; and at least one barrier layer adjacent said shielding layer wherein spacing limitations arc provided between said shielding layer and the supporting layers adjacent to said barrier layers for preventing fretting and generation of shield material powder during steady state vibration; said shielding being adapted for installation next to said system.

Claim 49

The composite shielding of claim 42 further comprising fasteners for securing the segments together.

Claim 50

The composite shielding of claim 42 wherein said thermal insulation layer comprises a thermal insulation material selected from a group consisting of low thermal conductivity materials, metallic reflective materials and combinations thereof.